Cheap flights from London Heathrow Airport to San Francisco from $299
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to San Francisco departing on 5/10. 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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How to get the cheapest flight ticket from London Heathrow Airport to San Francisco
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 cheapest month to fly to San Francisco?
If you aren’t able to travel to San Francisco during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $589.
What is the cheapest day to depart on your flight to San Francisco?
The cheapest day to depart from London Heathrow Airport to San Francisco is on a Wednesday when prices can be found for as low as $654. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $777.
What is the cheapest time of day to depart on your flight to San Francisco?
Our data shows that the cheapest London Heathrow Airport to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $682. Flights at noon are often more expensive with an average ticket price of $723.
What is the cheapest London Heathrow to San Francisco flight route?
Fly from London Heathrow to San Francisco for the best London Heathrow - San Francisco flight prices
How far in advance should I book a flight to San Francisco?
You are more likely to see cheaper flights to San Francisco from London Heathrow Airport when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $689 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from London Heathrow Airport for as low as $609 on momondo.
What cabin class options are available on London Heathrow to San Francisco flights?
There are 4 cabin classes available to choose from on London Heathrow to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from London Heathrow to San Francisco?
TAP AIR PORTUGAL, WestJet, and Vueling are the most popular carriers operating from London Heathrow to San Francisco
What airlines fly to San Francisco?
United Airlines, British Airways and Lufthansa are the top three most popular airlines that fly to San Francisco from London Heathrow Airport according to our data. United Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 12 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.
How many flights depart from London Heathrow Airport to San Francisco on average per day?
As of April 2025, 36 flights take off from London Heathrow Airport and land in San Francisco each day. The most common flight departure time for this route is 10:00AM, with 51% of daily flights taking off in the afternoon.
How many flights depart from London Heathrow Airport to San Francisco on average per week?
253 flights are operational weekly from London Heathrow Airport to San Francisco as of April 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.
When to book flights from London Heathrow Airport to San Francisco
Cheap London Heathrow Airport to San Francisco (LHR to SFO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to San Francisco
Best Price Found | $299 |
|---|---|
Fastest flight time | 11h 00m |
Direct flights | Every day |
Airports in San Francisco | 1 airport |
How far is London Heathrow to San Francisco by plane?
The straight-line distance from London Heathrow to San Francisco is 5341.3 mi. By plane, this route typically takes 11h 00m.
When did momondo last update prices for flights from London Heathrow Airport to San Francisco Airport?
Prices for flights from London Heathrow Airport to San Francisco Airport are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to San Francisco Airport?
The number of operators available for flights from London Heathrow Airport to San Francisco Airport is 12 as of April 2025.
How old do you have to be to fly from London Heathrow Airport to San Francisco 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 London Heathrow Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to San Francisco?
momondo data reveals that the most frequently booked plane model on the route from London Heathrow Airport to San Francisco is Boeing 777, representing 34.86% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 24.69%, Airbus A380-800 at 20.78%, and Boeing 777-300ER at 10.25%.
What is the most popular airline from London Heathrow Airport to San Francisco?
momondo data reveals that the most frequently booked airline on the route from London Heathrow Airport to San Francisco is United Airlines, representing 24% of all bookings. The subsequent popular airlines are British Airways at 21%, Lufthansa at 11%, and Iberia at 9%.
Best airlines flying from London Heathrow Airport to San Francisco
Compare and see reviews for airlines that fly from London Heathrow Airport to San Francisco with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $382 | Free Cancellation | Rating 7.6 1,269 reviews | |||
| PriceFrom $513 | Free Cancellation | Rating 6.6 6,735 reviews | |||
| PriceFrom $519 | Free Cancellation | Rating 8.0 7,910 reviews | |||
| PriceFrom $539 | Free Cancellation | Rating 7.5 774 reviews | |||
| PriceFrom $544 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $546 | Free Cancellation | Rating 7.3 345 reviews | |||
| PriceFrom $552 | Free Cancellation | Rating 6.7 6,985 reviews | |||
| PriceFrom $553 | Free Cancellation | Rating 7.4 641 reviews | |||
| PriceFrom $555 | Free Cancellation | Rating 7.3 1,333 reviews | |||
| PriceFrom $578 | Free Cancellation | Rating 7.4 8,636 reviews |
Delta Flights From London Heathrow Airport to San Francisco
Delta operates around 7 flights from London Heathrow Airport to San Francisco every week. The average price of these flights found in the last 72 hours has been $710, but momondo users have found Delta deals from London Heathrow Airport to San Francisco from as low as $519 round-trip. Delta has been scored 8.0/10 in 7,910 reviews.
Finnair Flights From London Heathrow Airport to San Francisco
Finnair is also a popular choice for this route. Finnair flight deals for London Heathrow Airport to San Francisco start from as low as $382 round-trip, depending on your selected dates, with average Finnair deals seen on momondo around $581. Finnair operates 13 flights to San Francisco from London Heathrow Airport in an average week. Users have rated it 7.6/10 across 1,269 reviews.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to San Francisco?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to San Francisco for you.
Can I find flights from London to San Francisco with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for London to San Francisco flights to just show those with flexible booking policies.
How can momondo help me find flights from London to San Francisco?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to San Francisco.
I’m not ready to book a flight from London to San Francisco right now. Can momondo alert me if prices change?
Price alerts on flights to San Francisco from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.