SFO - LHR

Find cheap flight tickets from San Francisco to London

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KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to London, as well as popular online travel agencies
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Cheap Flight Deals from San Francisco to London (SFO-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from San Francisco to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from San Francisco to Heathrow

KAYAK's recommended return flight deals from the most popular airlines that fly from San Francisco to Heathrow.
Discover the best prices for you by selecting your travel dates on KAYAK.
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American Airlines Logo
SFO-LHR
10h 35mdirect
American Airlines Logo
LHR-SFO
11h 05mdirect
American Airlines
Find Deal
KLM Logo
SFO-LHR
10h 20mdirect
KLM Logo
LHR-SFO
11h 00mdirect
Air Canada Logo
SFO-LHR
10h 30mdirect
Air Canada Logo
LHR-SFO
11h 00mdirect
Air Canada
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Aer Lingus Logo
SFO-LHR
10h 35mdirect
Aer Lingus Logo
LHR-SFO
11h 05mdirect
Aer Lingus
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Austrian Airlines Logo
SFO-LHR
10h 30mdirect
Austrian Airlines Logo
LHR-SFO
11h 05mdirect
Austrian Airlines
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Air France Logo
SFO-LHR
10h 20mdirect
Air France Logo
LHR-SFO
11h 00mdirect
Air France
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Delta Logo
SFO-LHR
10h 20mdirect
Delta Logo
LHR-SFO
11h 00mdirect
Aeromexico Logo
SFO-LHR
10h 20mdirect
Aeromexico Logo
LHR-SFO
11h 00mdirect
Aeromexico
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SWISS Logo
SFO-LHR
10h 30mdirect
SWISS Logo
LHR-SFO
11h 05mdirect
Air New Zealand Logo
SFO-LHR
10h 30mdirect
Air New Zealand Logo
LHR-SFO
11h 05mdirect
Air New Zealand
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United Airlines Logo
SFO-LHR
10h 30mdirect
United Airlines Logo
LHR-SFO
11h 05mdirect
United Airlines
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Alaska Airlines Logo
SFO-LHR
10h 35mdirect
Alaska Airlines Logo
LHR-SFO
11h 05mdirect
Alaska Airlines
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Finnair Logo
SFO-LHR
10h 35mdirect
Finnair Logo
LHR-SFO
11h 05mdirect
Finnair
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Iberia Logo
SFO-LHR
10h 25mdirect
Iberia Logo
LHR-SFO
11h 10mdirect
Iberia
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Brussels Airlines Logo
SFO-LHR
10h 30mdirect
Brussels Airlines Logo
LHR-SFO
11h 05mdirect
Brussels Airlines
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Lufthansa Logo
SFO-LHR
10h 30mdirect
Lufthansa Logo
LHR-SFO
11h 05mdirect
Lufthansa
Find Deal
Virgin Atlantic Logo
SFO-LHR
10h 20mdirect
Virgin Atlantic Logo
LHR-SFO
11h 00mdirect
Virgin Atlantic
Find Deal
British Airways Logo
SFO-LHR
10h 35mdirect
British Airways Logo
LHR-SFO
11h 05mdirect
British Airways
Find Deal

KAYAK's insights & trends for San Francisco to Heathrow flights

Get data-powered insights and trends into flights from San Francisco to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from San Francisco to London?

The average price of all round-trip flights from San Francisco to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from San Francisco to London, look for departures on Mondays and avoid leaving on a Tuesday, as it's usually the priciest day. When flying back from London, Sunday is the cheapest day to fly and Thursday is the most expensive.

What is the cheapest month to fly from San Francisco to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from San Francisco to London Heathrow Airport is October, where tickets cost ₹ 54,759 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is ₹ 94,955 and ₹ 82,522 respectively.

Can I save money by flying with a stopover from San Francisco to London Heathrow Airport?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.
No, with an average price for the route of ₹ 85,243, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from San Francisco to London Heathrow Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from San Francisco to London Heathrow Airport, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low season

January

High season

July
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (23% more expensive on average)

When to book flights from San Francisco to Heathrow

Are your dates flexible? Find out the best times to travel from San Francisco to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from San Francisco to Heathrow: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from San Francisco to Heathrow 
PallaviFlew with British AirwaysSFO-LHRApr 2025
Eat at the lounge first so you are not stuck eating overcooked cheese ravioli
TapanFlew with British AirwaysSFO-LHROct 2024
Great baggage policy in BA.. The worst part was experience at London Heathrow airport. Security was slow, too many people. Almost lost connecting flight even with 2 hours layover.
Verified travelerFlew with American AirlinesSFO-LHRApr 2024
best airlines for business class: KLM and Turkish

FAQs for booking San Francisco to London flights

  • Are there nonstop flights from San Francisco to Heathrow Airport?

    It is possible to fly directly into London from San Francisco. American Airlines and British Airways offer direct London flight deals, making the two airlines highly sought after by business travelers. However, you’ll have to add a few dollars for a ticket. Other airlines, such as Lufthansa, Aer Lingus, KLM, and Finnair have one-stop flights with one or multiple layovers in Frankfurt, Munich, Dublin, Amsterdam, and Helsinki.

  • Where can I find car rental companies at Heathrow Airport?

    If you prefer driving to your hotel or the city center from Heathrow Airport, you can rent a car from the car rental agencies located at every terminal's arrival concourses. You can rent a vehicle from some renowned companies, such as National, Avis, Europcar, Alamo, Enterprise Rent-A-Car, and Budget.

  • How can I get to London City from Heathrow Airport?

    You can access London city from Heathrow Airport by bus. The National Express buses depart the Heathrow Central Station, nestled between Terminals 2 and 3, every 15min. The journey takes about 50min. You can also take the Heathrow Express Trains that connect to Paddington Station in London. Fares cost around £15.87 ($22) - £18.04 ($25). Otherwise, take the typical black taxis, Minicabit, or cabs, which might charge about £2.89 ($4) - £5.05 ($7). You can also book a Heathrow Shuttle Transfer to your hotel or city center, although these have several stops.

  • Where are the airport lounges at San Francisco Airport?

    There are about seven lounges at San Francisco Airport (SFO) where you can relax and enjoy VIP services before your Heathrow (LHR) flight. They include the Air France-KLM Lounge (International Terminal A), American Airlines Admirals Club (Terminal 1), The Centurion Lounge (Terminal 3), Delta Sky Club (Terminal 2), Japan Airlines Sakura Lounge (Terminal A, immediately next to Gate A1), and others.

  • Which airlines offer Wi-Fi service onboard planes from San Francisco to London?

    KLM, SWISS, Iberia, United Airlines, and American Airlines offer inflight Wi-Fi service on the San Francisco to London flight route.

  • Which aircraft models fly most regularly from San Francisco to London?

    The Boeing 777 is the aircraft model that flies most regularly on the San Francisco to London flight route.

  • Which airline alliances offer flights from San Francisco to London?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between San Francisco and London, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from San Francisco to London?

    There are direct flights from San Francisco to London on a daily basis.

  • How does KAYAK find such low prices on flights from San Francisco to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from San Francisco is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London with an airline and back to San Francisco with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from San Francisco to London Heathrow Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for ₹ 42,990 or less one-way and ₹ 75,220 or less round-trip.
  • Are you traveling for business? San Francisco Airport (SFO) offers business-centric services to make your trip as productive and convenient as possible. There is a Business Center in the International Terminal Main Building with free Wi-Fi, charging outlets, fax and copying solutions.
  • Flight boarding and cargo handling can be more convenient if you're at the right terminal. If you booked a Virgin Atlantic or British Airways ticket from San Francisco Airport (SFO), it would be best to check-in at the International Terminal. However, American Airlines depart from Terminal 2.
  • Do you have a lot of baggage and require inter-terminal transport at London-Heathrow Airport (LHR)? There are bus shuttles that transfer passengers from the arrival terminals to the Main Arrival Hall. You can also take the underground train, but you'll have to purchase a ticket at the terminal station.
  • Families will relish flying from San Francisco Airport (SFO) because it has many family-friendly amenities. The airport provides baggage assistance, nursing rooms, and children's play areas in Terminals 1, 2, and 3.
  • Travelers driving to the airport can find plenty of parking spaces within the San Francisco hub. You can park at the International Garage A or G. These charge about $2 per 15min, with a daily maximum of around $36. There's also a long-term parking lot with a daily maximum of about $18.
See more tips

Prefer to fly direct from San Francisco to London Heathrow?

Find which airlines fly direct from San Francisco Airport to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

San Francisco to London Heathrow

Monday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Tuesday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Wednesday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Thursday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Friday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Saturday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Sunday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

See more direct flights

Direct returns

London Heathrow to San Francisco

Monday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Tuesday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Wednesday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Thursday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Friday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Saturday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

Sunday

Aer Lingus, Aeromexico, Air Canada, +15 more

Aer Lingus, Aeromexico, +16 more

See more direct flights
See more direct flights

Top airlines flying from San Francisco to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8683 reviews
7.1Entertainment
8.1Crew
6.6Food
7.7Boarding
7.3Comfort
Airline reviews

Compared with other carriers business class for an overnight was not worth the extra expense.

6.0 GoodRobbie, Mar 2025SFO - RDU
Read more United Airlines reviews

Compared with other carriers business class for an overnight was not worth the extra expense.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

Fight was delayed an hour due to operational issues ,then further delayed due to ground control for a total of about 1.30 hours. Salad was completely frozen and flatware was so cold you could barely handle it. Crew was friendly and professional and the flight was smooth. The aircraft was clean and well-serviced.

AWFUL. I have had the experience of traveling with many airlines across the world, and hands down United Airlines is the worst. Not one flight was on time, and I don’t think I met one crew member or staff member who wasn’t rude.

For an 8.5 hour flight the service on board lacked a bit. Service start was slow, the food was worse than usual and they skipped the snack they were supposed to deliver before landing.

Wish movie and music choices changed more often. Mostly same from a month or two ago when I last flew.

It was good. Just that the seats could not be reclined. The people behind were not ready to let the chairs be reclined

Checkin was painful and slow! Lady didn’t seem to know what was going on and couldn’t explain the delay. Seemed ahe couldnt see the computer scree and we couldn’t hear her talk through her mask.

I did not fly by vergin atlantic from bangalore to vasco da gama

Your flight delayed at Heathrow n I almost missed my mother funeral.you idiots. I had to waste 10 hours in different airports. Thank your stars I'm not suing you.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

Flight took off an hour late. Had to stay on the tarmac for half an hour after landing. Both annoying.

We had an unfortunate experience where we had to leave the aircraft after boarding, shortly before the scheduled takeoff time, and re-board. The reason given was that a passenger felt ill and had to cancel their plans and therefor their luggage had to be found and removed.

We’ve used VA before many times the experience is always been good they have lovely staff and the food is always delicious.

Everything about the flight was amazing from check in to boarding entertainment was okay food we didn’t try.

Seats were old and dirty, for a long haul flight you expect to be able to recline and for the av to work properly. Choice for vegans was fruit….

The Virgin Atlantic crew was very good. However, the equipment was OK, the seats were OK, but her bags did not arrive with me. Two bags showed up a day later and I’m still waiting for my third back.

The crew was very good. However, the equipment was a bit dated. Some of the electronics were not working. To top it, three bags didn’t arrive with me. Two of them were delivered a day later. I’m still waiting for the third bag, I was so looking forward to this virgin Atlantic flight, but, I am disappointed.

Everything you need to know for your flight from San Francisco to Heathrow

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