Cheap flights from San Francisco to London from £296
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to London departing on 9/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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TAP AIR PORTUGAL flights from San Francisco to London Heathrow Airport
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Fly from
Fly to
Route
Depart
Return
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Fri 2/4
16:45-18:30
2 stops17h 45m
London Heathrow
Sun 11/4
21:05-14:40
2 stops25h 35m
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Mon 16/11
16:45-08:20
3 stops31h 35m
London Heathrow
Mon 23/11
11:05-14:50
2 stops35h 45m
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Sat 5/12
20:35-15:10
Nonstop10h 35m
London Heathrow
Sat 19/12
11:45-14:55
Nonstop11h 10m
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Sat 23/1
23:05-21:20
1 stop14h 15m
London Heathrow
Mon 25/1
13:45-16:30
1 stop34h 45m
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Mon 22/3
17:40-10:55
Nonstop10h 15m
London Heathrow
Tue 6/4
06:30-11:45
1 stop13h 15m
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Tue 23/3
17:40-10:55
Nonstop10h 15m
London Heathrow
Tue 6/4
06:30-11:45
1 stop13h 15m
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Tue 1/12
20:35-15:10
Nonstop10h 35m
London Heathrow
Sat 19/12
11:45-14:55
Nonstop11h 10m
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Mon 15/2
16:40-11:20
1 stop34h 40m
London Heathrow
Thu 18/2
09:00-16:30
1 stop15h 30m
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Wed 21/10
17:55-12:15
Nonstop10h 20m
London Heathrow
Wed 2/12
11:50-14:50
Nonstop11h 00m
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Tue 20/10
17:55-12:15
Nonstop10h 20m
London Heathrow
Wed 2/12
11:50-14:50
Nonstop11h 00m
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How to get the cheapest flight ticket from San Francisco to London Heathrow Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between San Francisco and London Heathrow Airport?
Prices are currently typical for flights on this route.
Typical prices usually range from £540 to £772.The lowest price recently found on this route was £554.
What is the cheapest month to fly to London Heathrow Airport?
In general, February is the cheapest month to fly from San Francisco to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £493. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from San Francisco averaging around £545.
What is the cheapest day to depart on your flight to London Heathrow Airport?
On average, the least expensive day to fly to London Heathrow Airport from San Francisco is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £618. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Tuesday is £896.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from San Francisco to London Heathrow Airport in the morning for as low as £593. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £894 on average. Flights to London Heathrow Airport from San Francisco at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.
What is the cheapest San Francisco to London Heathrow flight route?
Fly from San Francisco to London Heathrow for the best San Francisco - London Heathrow flight prices
How far in advance should I book a flight from San Francisco to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £694 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from San Francisco for as low as £664 on momondo.
What cabin class options are available on San Francisco to London Heathrow Airport flights?
There are 3 cabin classes available to choose from on San Francisco to London Heathrow Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on San Francisco to London Heathrow Airport flights?
No. A direct flight is the cheapest option for a flight between San Francisco to London Heathrow Airport.
How have San Francisco to London Heathrow Airport flight prices changed over time?
As of October 2026, prices for San Francisco to London Heathrow Airport flights are approximately 8% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from San Francisco to London Heathrow?
United Airlines, KLM, and Virgin Atlantic are the most popular carriers operating from San Francisco to London Heathrow
Which airlines fly to London Heathrow Airport?
Virgin Atlantic, British Airways and United Airlines are the top three most popular airlines that fly to London Heathrow Airport from San Francisco according to our data. Virgin Atlantic is the first choice among our users, with 50% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 6 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
How often are flights from San Francisco to London delayed?
Historically, on average around 11% of flights between San Francisco and London have experienced a delay on any given week. The average delay length over the past 12 months has been 152 minutes.
What is the most punctual flight time for San Francisco to London flights?
Generally, flights departing in the evening tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.
What day of the week experiences the fewest flight delays on this route?
Monday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.
Which airline has the best punctuality record on San Francisco to London flights?
According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.
How many flights depart from San Francisco to London Heathrow Airport on average per day?
The number of flights available between San Francisco and London Heathrow Airport is 38 per day as of October 2026. The most frequent departure time is 16:00, with 67% of daily flights leaving in the afternoon.
How many flights depart from San Francisco to London Heathrow Airport on average per week?
As of October 2026, there are 266 flights per week flying from San Francisco to London Heathrow Airport. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.
When to book flights from San Francisco to London Heathrow Airport
Cheap San Francisco to London Heathrow Airport (SFO to LHR) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco to London Heathrow Airport
Frequently asked questions about flying from San Francisco to London Heathrow Airport
How far is San Francisco to London Heathrow by plane?
The distance between San Francisco and London Heathrow is about 5341.6 mi. Typically, this will take 10h 15m by plane in normal conditions.
When did momondo last update prices for flights from San Francisco Airport to London Heathrow Airport?
Prices for flights from San Francisco Airport to London Heathrow Airport are refreshed on a daily basis.
How many operators does momondo search for flights from San Francisco Airport to London Heathrow Airport?
There are 6 operators available for flights from San Francisco Airport to London Heathrow Airport as of October 2026.
How old do you have to be to fly from San Francisco Airport to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from San Francisco to London Heathrow Airport?
momondo data reveals that the most frequently booked plane model on the route from San Francisco to London Heathrow Airport is Boeing 787-9 Dreamliner, representing 29.97% of all bookings. The subsequent popular models are Airbus A380-800 at 18.32%, Boeing 777-300ER at 16.41%, and Airbus A350-1000 at 13.64%.
What is the most popular airline from San Francisco to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Francisco to London Heathrow Airport is Virgin Atlantic (45% of total bookings). The next most popular airlines are British Airways (20%), United Airlines (17%), and KLM (8%).
Best airlines flying from San Francisco to London Heathrow Airport
Compare and see reviews for airlines that fly from San Francisco to London Heathrow Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £458 | Free Cancellation | Rating 7.5 694 reviews | |||
| PriceFrom £459 | Free Cancellation | Rating 6.8 8,271 reviews | |||
| PriceFrom £462 | Free Cancellation | Rating 7.8 1,580 reviews | |||
| PriceFrom £468 | Free Cancellation | Rating 6.7 8,255 reviews | |||
| PriceFrom £499 | Free Cancellation | Rating 7.4 10,319 reviews | |||
| PriceFrom £595 | Free Cancellation | Rating 7.8 8,645 reviews |
Delta Flights From San Francisco to London Heathrow Airport
The lowest priced Delta flight from San Francisco to London Heathrow Airport from the last 72 hours was £595. Generally, Delta has 7 flights on this route every week with an average price of £869. Delta is rated 7.8/10 by our users.
KLM Flights From San Francisco to London Heathrow Airport
Across 1,580 KLM reviews on momondo, the average score is 7.8/10. KLM flies from San Francisco to London Heathrow Airport about 7 times each week, with ticket deals ranging from £462 to £739. Price data is based on momondo searches in the last 72 hours.
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Why should I use momondo to find a flight deal from San Francisco to London?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Francisco to London . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from San Francisco to London with flexible booking policies on momondo?
Flights from San Francisco to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from San Francisco to London?
momondo provides multiple filters to help you find the best flight to London from San Francisco. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from San Francisco to London right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of San Francisco to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.