Which airlines with flights from London Airport (LCY-London City) to San Francisco, CA Airport (SFO-San Francisco Intl.) allow free cancellation due to COVID-19? Once all available flight options are displayed for your preferred travel dates, check the “No change fee” box under the “Flexible change policies” heading.Wed 1/5 15:30 SFO - LHR. Nonstop 10h 30m Finnair. Deal found 18/4 £4,710. Pick Dates. If you’re travelling from London to San Francisco, one of the more common airlines travelling that route is Finnair. Flights from Finnair travelling this … The cheapest month for flights from San Francisco to London is October, where tickets cost $1,022 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,953 and $1,684 respectively. Alternative Routes from San Francisco or to London. Virgin Atlantic is incredibly proud to have been awarded Diamond status in Health and Safety by APEX and Simpliflying. This is the highest standard possible, and shows our unwavering commitment to keeping our staff and customers safe and sound throughout the Covid-19 pandemic. Currently, SFO sees flights to China at 50% of pre-pandemic levels. Something Yakel says, has room for improvement, saying, "We're making good …Return flights from San Francisco SFO to London LHR with Air France If you’re planning a round trip, booking return flights with Air France is usually the most cost-effective option. With airfares ranging from $2,012 to $2,012, it’s easy to find a flight that suits your budget.Fly from San Francisco (SFO) to London Heathrow (LHR) SFO - LHR; £293 - £997. Cheapest option. Fly to East Midlands • 17h 17m. Fly from San Francisco (SFO) to East Midlands (EMA) SFO - EMA; £281 - £913. 6 alternative options. Fly to Manchester • 15h 4m.The cheapest return flight ticket from San Francisco to London Heathrow Airport found by KAYAK users in the last 72 hours was for $496 on Aer Lingus, followed by TAP AIR PORTUGAL ($567). One-way flight deals have also been found from as low as $352 on Vueling and from $380 on SWISS.Flying time from SFO to London, United Kingdom. The total flight duration from SFO to London, United Kingdom is 11 hours, 15 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing.1 stop. Tue, May 7 SFO – LCY with ITA Airways. 1 stop. from $594. San Francisco.$611 per passenger.Departing Wed, May 8, returning Thu, May 16.Round-trip flight with ITA Airways.Outbound indirect flight with ITA Airways, departing from London City on Wed, May 8, arriving in San Francisco International.Inbound indirect flight with ITA Airways ...Enjoy all the in-flight perks on your London flight, including speed Wi-Fi. Book cheap flights to London (LHR) with United Airlines. Enjoy all the in-flight perks on your London flight, including speed Wi-Fi. ... (SFO) To London (LHR) Roundtrip | Economy: 05/26/24 - 06/06/24: from. $ 741* Viewed: 18 hours ago. From New York/Newark (EWR) To ...1 stop. Fri, 31 Jan LGW - SFO with TAP Air Portugal. 1 stop. from £491. London. £495 per passenger.Departing Fri, 3 May, returning Wed, 8 May.Return flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Fri, 3 May, arriving in London Gatwick.Inbound indirect flight with Delta, departs from London ...Cheap Flights from London (LHR) to San Francisco (SFO) Prices were available within the past 7 days and start at £407 for one-way flights and £419 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.Tue, 23 Apr SFO - LGW with Air France. 1 stop. from $708. San Francisco.$759 per passenger.Departing Thu, 18 Apr, returning Mon, 22 Apr.Return flight with Delta.Outbound direct flight with Delta departs from London Heathrow on Thu, 18 Apr, arriving in San Francisco International.Inbound direct flight with Delta departs from San …Prices were available within the past 7 days and start at $424 for one-way flights and $473 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. One way. Roundtrip. Sat, Sep 28 - …There are 3 airlines that fly nonstop from San Francisco to London. They are: British Airways, United Airlines and Virgin Atlantic. The cheapest price of all airlines flying this route was found with British Airways at $605 for a one-way flight. On average, the best prices for this route can be found at British Airways.Flights to London. Aer Lingus offers 20+ daily flights to London serving both London Heathrow and London Gatwick Airports. Fly to London with Aer Lingus and look forward to a warm Irish welcome on board. Flights from San Francisco to London. Use Google Flights to plan your next trip and find cheap one way or round trip flights from San Francisco to London. Find the best... The cheapest return flight ticket from San Francisco to London Heathrow Airport found by KAYAK users in the last 72 hours was for $638 on United Airlines, followed by Finnair ($639). One-way flight deals have also been found from …Thu, 10 Oct SFO - LTN with Vueling Airlines. 1 stop. from £391. San Francisco. £391 per passenger.Departing Wed, 21 Feb, returning Mon, 26 Feb.Return flight with easyJet and Air Canada.Outbound indirect flight with easyJet, departs from London Luton on Wed, 21 Feb, arriving in San Francisco International.Inbound indirect flight with Air ...Flights to London take you to a city of unforgettable landmarks. Buckingham Palace, Wembley Stadium, Big Ben, Regent’s Park, Camden Town, Notting Hill, the London Underground—the list of things to do and see in London is endless. (This includes the city's giant Ferris wheel, the London Eye, the perfect vantage point for taking it all in). ...British Airways to London. $564. American Airlines to London. Find flights to London from $177. Fly from the United States on PLAY, Norse Atlantic UK and more. Fly from New York from $177, from Newark from $189 or from Stewart Intl. from $197. Search for London flights on KAYAK now to find the best deal.Cheap Flights from San Francisco to London (SFO-LCY) Prices were available within the past 7 days and start at $446 for one-way flights and $543 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from San Francisco to London with no change fee on ...Flights from San Francisco to London. Use Google Flights to plan your next trip and find cheap one way or round trip flights from San Francisco to London. Find the best...Cheapest return flights to San Francisco from London. Apr 2024. £ 433. Find. May 2024. £ 472. Find. Jun 2024. £ 552.Use our best fare finder to search flights from London to San Francisco. Take a look at our offers and you are guaranteed to find the best flight deals. Choose what suits you best from the attractive offers for flights to San Francisco (SFO) in October 2024 from 472 £.Sun, Apr 28 SFO – LCY with SWISS. 1 stop. Thu, May 16 LCY – SFO with SWISS. 1 stop. from $670. London.$675 per passenger.Departing Thu, Nov 28, returning Wed, Dec 11.Round-trip flight with ITA Airways.Outbound indirect flight with ITA Airways, departing from San Francisco International on Thu, Nov 28, arriving in London City.Inbound ...Delta has flights from all over the United States to London and flies nonstop into two of London's primary airports. Fly on Delta to London-Heathrow (LHR) from Boston (BOS), Los Angeles (LAX), Seattle (SEA), Atlanta (ATL), Detroit (DTW), Salt Lake City (SLC), Minneapolis (MSP), and New York City (JFK) and into Gatwick Airport (LGW) from New ... Flights to Brighton, England. $711. Flights to Bristol, England. $486. Flights to Cambridge, England. View more. Find flights to England from $249. Fly from San Francisco on TAP AIR PORTUGAL, Virgin Atlantic, Delta and more. Search for England flights on KAYAK now to find the best deal. Mon, 24 Jun LHR - SFO with Scandinavian Airlines. 1 stop. from ₹ 26,434. San Francisco. ₹ 26,668 per passenger.Departing Mon, 9 Sep.One-way flight with Fly Play.Outbound indirect flight with Fly Play, departs from London Stansted on Mon, 9 Sep, arriving in San Francisco International.Price includes taxes and charges.From ₹ 26,668, select.Amazing KLM SFO to LHR Flight Deals. The cheapest flights to Heathrow found within the past 7 days were $727 round trip and $511 one way. Prices and availability subject to change. Additional terms may apply. Mon, Nov 11 - Thu, Nov 21.Cheap flights from San Francisco (SFO) to London (LHR) Prices were available within the past 7 days and start at CA $579 for one-way flights and CA $801 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from San Francisco to London with no change fee ...Looking for a cheap last-minute deal or the best round-trip flight from London to San Francisco International? Find the lowest prices on one-way and round-trip tickets right here. San Francisco.$495 per passenger.Departing Fri, May 24, returning Thu, May 30.Round-trip flight with WestJet and Flair Airlines.Outbound indirect flight with WestJet ... $426 Cheap British Airways flights San Francisco (SFO) to London (LHR) Prices were available within the past 7 days and start at $426 for one-way flights and $475 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Flights to Brighton, England. $711. Flights to Bristol, England. $486. Flights to Cambridge, England. View more. Find flights to England from $249. Fly from San Francisco on TAP AIR PORTUGAL, Virgin Atlantic, Delta and more. Search for England flights on KAYAK now to find the best deal. 1 stop. Thu, Oct 10 LGW – SFO with TAP Air Portugal. 1 stop. from $484. London.$562 per passenger.Departing Tue, Nov 5, returning Tue, Nov 19.Round-trip flight with American Airlines.Outbound indirect flight with American Airlines, departing from San Francisco International on Tue, Nov 5, arriving in London Gatwick.Inbound indirect flight ... Put some thought into where you should sit, because the San Francisco, CA Airport (SFO-San Francisco Intl.) to London Airport (LHR-Heathrow) route averages 10 hours and 21 minutes. Window or aisle seats, exit rows and seats close to the front are usually considered to be the most desirable spots. 1 stop. Tue, May 7 SFO – LCY with ITA Airways. 1 stop. from $594. San Francisco.$611 per passenger.Departing Wed, May 8, returning Thu, May 16.Round-trip flight with ITA Airways.Outbound indirect flight with ITA Airways, departing from London City on Wed, May 8, arriving in San Francisco International.Inbound indirect flight with ITA Airways ... Find flights to London from $283. Fly from San Francisco on WestJet, Air Canada, United Airlines and more. Search for London flights on KAYAK now to find the best deal. Fly from San Francisco on TAP AIR PORTUGAL, Vueling, Iberia and more. Search for Europe flights on KAYAK now to find the best deal. ... (SFO) a hub for any airline? ... Istanbul $544 one-way - $990 round-trip; London $502 one-way - $704 round-trip. Morning departure is around 25% cheaper than an evening flight, on average*.The two airlines most popular with KAYAK users for flights from San Francisco to London are Delta and Virgin Atlantic. With an average price for the route of $838 and an overall rating of 8.0, Delta is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of $802 and an overall rating of 7.7.Cheap Flights from San Francisco to Delhi (SFO-DEL) Prices were available within the past 7 days and start at $395 for one-way flights and $667 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from San Francisco to Delhi with no change fee on selected ... Wed, 8 May LGW - SFO with American Airlines. 1 stop. from $862. London.$868 per passenger.Departing Tue, 30 Apr, returning Tue, 7 May.Return flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Tue, 30 Apr, arriving in London Heathrow.Inbound indirect flight with Delta, departs from London Gatwick ... Compare flight deals to London from San Francisco from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flight tickets to London start from $563 one-way. Flex your dates to find the best SFO-LHR ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest ...Fly from San Francisco on TAP AIR PORTUGAL, Vueling, Iberia and more. Search for Europe flights on KAYAK now to find the best deal. ... (SFO) a hub for any airline? ... Istanbul $544 one-way - $990 round-trip; London $502 one-way - $704 round-trip. Morning departure is around 25% cheaper than an evening flight, on average*.Wed, 29 May SFO - LHR with Flair Airlines. 1 stop. from ₹ 32,632. London. ₹ 32,789 per passenger.Departing Tue, 30 Apr.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from San Francisco International on Tue, 30 Apr, arriving in London Heathrow.Price includes taxes and charges.From ₹ 32,789, select.Find cheap flights from SFO to LHR with Virgin Atlantic, the official airline of London. Book now and enjoy complimentary Covid-19 insurance, pre-flight testing and more.Use Google Flights to find cheap departing flights to London and to track prices for specific travel dates for your next getaway.Find flights to London Heathrow Airport from £255. Fly from San Francisco on TAP AIR PORTUGAL, Iberia, British Airways and more. Search for London Heathrow Airport flights on KAYAK now to find the best deal. ... (SFO) where you can relax and enjoy VIP services before your Heathrow (LHR) flight. They include the Air France-KLM Lounge ...Are you searching for American Airlines flights from San Francisco to London? Find the best selections and fly in style. ... San Francisco (SFO) to. London (LHR) 04/30/24 - 05/07/24. from. $584* Updated: 26 minutes ago. Round trip. I. Economy. See Latest Fare. San Francisco (SFO) to. London (LHR)Airfares from $405 One Way, $454 Round Trip from San Francisco to London. Prices starting at $454 for return flights and $405 for one-way flights to London were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply. Tue, Dec 3 - Wed, Dec 11.Search and compare business class flight deals to London. Fly from New York from $1,842, from Newark from $1,849, from Washington, D.C. from $1,940. Book your business class tickets to London.Sun, 21 Apr SFO - LCY with Virgin Atlantic. 1 stop. Mon, 6 May LCY - SFO with Virgin Atlantic. 1 stop. from £516. London. £529 per passenger. ... Compare flight deals to London City from San Francisco International from over 1,000 providers. Then choose the cheapest or fastest plane tickets.Sun, 21 Apr SFO - LCY with Virgin Atlantic. 1 stop. Mon, 6 May LCY - SFO with Virgin Atlantic. 1 stop. from £516. London. £529 per passenger. ... Compare flight deals to London City from San Francisco International from over 1,000 providers. Then choose the cheapest or fastest plane tickets.Earn your airline miles on top of our OneKeyCash. Learn about One Key. $424 Cheap Virgin Atlantic flights San Francisco (SFO) to London (LHR) Prices were available within the past 7 days and start at $424 for one-way flights and $468 for round trip, for the period specified. Prices and availability are subject to change. Direct (non-stop) flights from San Francisco to London. All flight schedules from San Francisco International , California , USA to Heathrow, United Kingdom . This route is operated by 3 airline (s), and the flight time is 10 hours and 35 minutes. The distance is 5383 miles. San Francisco. £385 per passenger.Departing Thu, 6 Mar, returning Fri, 21 Mar.Return flight with Scandinavian Airlines.Outbound indirect flight with Scandinavian Airlines, …Use Google Flights to explore cheap flights to anywhere. Search destinations and track prices to find and book your next flight.While you'll still find an older version of the airline's business class on a very small number of London-bound flights, those planes are in the process of being updated, and most should be done by the end of this year. To make sure you're getting the best product, look for either a 1-2-1 or 1-1-1 seating arrangement, on the 777/787 and 767 ...Cheap flights to London. Roundtrip One way Multi-city. Depart. 28/04/2024. Return. 05/05/2024. Travelers and cabin class. 1 adult, Economy. Direct flights only.One of the most popular airlines traveling from San Francisco to London Heathrow Airport is United Airlines. Flights on this route from United Airlines typically cost $730.16 RT, a price that is 74% more expensive than the average San Francisco to London Heathrow Airport flight. The cheapest flight found was $564 RT.Currently, SFO sees flights to China at 50% of pre-pandemic levels. Something Yakel says, has room for improvement, saying, "We're making good …San Francisco to London Heathrow Flights. Flights from SFO to LHR are operated 49 times a week, with an average of 7 flights per day. Departure times vary between 12:30 - 22:10. The earliest flight departs at 12:30, the last flight departs at 22:10. However, this depends on the date you are flying so please check with the full flight schedule ...British Airways to London. $564. American Airlines to London. Find flights to London from $177. Fly from the United States on PLAY, Norse Atlantic UK and more. Fly from New York from $177, from Newark from $189 or from Stewart Intl. from $197. Search for London flights on KAYAK now to find the best deal. There are 3 airlines that fly nonstop from San Francisco to Paris. They are: Air France, French Bee and United Airlines. The cheapest price of all airlines flying this route was found with French Bee at $502 for a one-way flight. On average, the best prices for this route can be found at French Bee. There are direct non-stop flights from San Francisco Airport (SFO) to London Heathrow with airlines other including Aer Lingus and Delta. There are also cheap one-stop and two-stop flights from San Francisco to London Heathrow with Lufthansa, SWISS Airlines, British Airways, and Iberia.Are you searching for American Airlines flights from San Francisco to London? Find the best selections and fly in style. ... San Francisco (SFO) to. London (LHR) 04/30/24 - 05/07/24. from. $584* Updated: 26 minutes ago. Round trip. I. Economy. See Latest Fare. San Francisco (SFO) to. London (LHR)Find flights to San Francisco from C$ 549. Fly from London on TAP AIR PORTUGAL, Scandinavian Airlines, British Airways and more. Search for San Francisco flights on KAYAK now to find the best deal.Prices were available within the past 7 days and start at $444 for one-way flights and $627 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. One way. Roundtrip. Tue, Nov 5 - …Amazing Virgin Atlantic SFO to LHR Flight Deals. The cheapest flights to Heathrow found within the past 7 days were $578 round trip and $444 one way. Prices and availability subject to change. Additional terms may apply. Sun, Apr 28 - Tue, May 14. We offer flights to three different London airports, so you can choose the one that’s most convenient for where you’re staying. London Heathrow is London’s busiest airport. There are several options for your journey into the city, including the Heathrow Express, which takes 20 minutes to Paddington. United flights from San Francisco to London from$ 604*. United flights from San Francisco to London from. $ 604. *. 1 Passenger, Economy. Home. United flights. Flights to United Kingdom. San Francisco - London. Find cheap flights from London to San Francisco from £192. Return. 1 adult. Economy. 0 bags. Add hotel. Sat 18/5. Sat 25/5. Search. Direct flights only. Search hundreds of …Sun, Feb 23 SFO – LHR with Scandinavian Airlines. 1 stop. from $497. San Francisco.$515 per passenger.Departing Tue, Oct 1, returning Tue, Oct 8.Round-trip flight with Vueling Airlines and TAP Air Portugal.Outbound indirect flight with Vueling Airlines, departing from London Heathrow on Tue, Oct 1, arriving in San Francisco International ...Sun, Feb 23 SFO – LHR with Scandinavian Airlines. 1 stop. from $497. San Francisco.$515 per passenger.Departing Tue, Oct 1, returning Tue, Oct 8.Round-trip flight with Vueling Airlines and TAP Air Portugal.Outbound indirect flight with Vueling Airlines, departing from London Heathrow on Tue, Oct 1, arriving in San Francisco International ...Tue, 8 Oct SFO - LGW with TAP Air Portugal. 1 stop. from £408. San Francisco. £427 per passenger.Departing Wed, 25 Sep, returning Wed, 9 Oct.Return flight with Vueling Airlines and TAP Air Portugal.Outbound indirect flight with Vueling Airlines, departs from London Gatwick on Wed, 25 Sep, arriving in San Francisco International.Inbound ...Find flights to London from C$ 686. Fly from San Francisco on WestJet, Air Canada and more. Search for London flights on KAYAK now to find the best deal.1 stop. from $295. London.$374 per passenger.Departing Wed, 2 Oct.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from San Francisco International on Wed, 2 Oct, arriving in London Gatwick.Price includes taxes and charges.From $374, select. Wed, 2 Oct SFO - LGW with Alaska Airlines. Which airlines provide the cheapest flights from London City to San Francisco? In the last 3 days, SWISS offered the best one-way deal for that route, at $558. KAYAK users also found London City to San Francisco round-trip flights on British Airways from $600 and on Virgin Atlantic from $607.
Sun, Apr 28 SFO – LCY with SWISS. 1 stop. Thu, May 16 LCY – SFO with SWISS. 1 stop. from $670. London.$675 per passenger.Departing Thu, Nov 28, returning Wed, Dec 11.Round-trip flight with ITA Airways.Outbound indirect flight with ITA Airways, departing from San Francisco International on Thu, Nov 28, arriving in London City.Inbound .... Trade locker
The cheapest month for flights from San Francisco to London is October, where tickets cost ₹ 54,768 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is ₹ 104,618 and ₹ 90,196 respectively.Sat, May 11 FRA – SFO with Condor. Direct. from $574. Frankfurt.$593 per passenger.Departing Tue, Oct 15, returning Tue, Oct 29.Round-trip flight with Condor.Outbound direct flight with Condor departing from San Francisco International on Tue, Oct 15, arriving in Frankfurt am Main.Inbound direct flight with Condor departing …What is the cheapest flight from London Luton Airport to San Francisco? In the last 3 days, the lowest price for a flight from London Luton Airport to San Francisco was $258 for a one-way ticket and $665 for a round-trip.Prices were available within the past 7 days and start at $444 for one-way flights and $627 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. One way. Roundtrip. Tue, Nov 5 - …The total flight duration from San Francisco, CA to London, United Kingdom is 11 hours, 14 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing. Your exact time may vary depending on wind speeds.Prices were available within the past 7 days and start at $459 for one-way flights and $652 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. One way. Roundtrip. Mon, Jul 8 - … San Francisco to London Heathrow Flights. Flights from SFO to LHR are operated 49 times a week, with an average of 7 flights per day. Departure times vary between 12:30 - 22:10. The earliest flight departs at 12:30, the last flight departs at 22:10. However, this depends on the date you are flying so please check with the full flight schedule ... found 8 hours ago. Book one-way or return flights from San Francisco to London with no change fee on selected flights. Earn your airline miles on top of our rewards! Get great …08/24/24 - 09/03/24. from. $ 681*. Viewed: 9 hours ago. From. London (LHR) To. San Francisco (SFO) Roundtrip.Find cheap flights from SFO to LHR with United Airlines. Compare prices, dates, and fares for roundtrip or one-way tickets in economy or premium class.Sun, 21 Jul SFO - LHR with Iberia. 1 stop. from ₹ 32,184. London. ₹ 33,711 per passenger.Departing Tue, 14 Jan.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from San Francisco International on Tue, 14 Jan, arriving in London Heathrow.Price includes taxes and charges.From ₹ 33,711, select.Which airlines with flights from London Airport (LCY-London City) to San Francisco, CA Airport (SFO-San Francisco Intl.) allow free cancellation due to COVID-19? Once all available flight options are displayed for your preferred travel dates, check the “No change fee” box under the “Flexible change policies” heading.Virgin Atlantic, British Airways, and seven other airlines fly from San Francisco (SFO) to London Heathrow (LHR) hourly. Airlines. Delta. Website delta.com. Flights from San Francisco to London Heathrow Ave. Duration 10h …Cheapest return flights to San Francisco from London. Apr 2024. £ 433. Find. May 2024. £ 472. Find. Jun 2024. £ 552.United Airlines FLIGHT UA930 from San Francisco to London. On-time Performance, delay statistics and flight information for UA930 LIVE TRACKING ... SFO -> LHR San Francisco 15 Apr 19:45 PDT San Francisco (SFO / KSFO) 15 Apr 19:45 PDT: London 16 Apr 14:10 BST London (LHR / EGLL)Cheap flights to London. Roundtrip One way Multi-city. Depart. 28/04/2024. Return. 05/05/2024. Travelers and cabin class. 1 adult, Economy. Direct flights only. Find cheap flights from San Francisco to London Stansted Airport from. $338. Round-trip. 1 adult. Economy. 0 bags. Add hotel. Thu 5/23. Thu 5/30. Flight deals from San Francisco International to London. Looking for a cheap last-minute deal or the best return flight from San Francisco International to London? Find the ….