Cheap flights from London Heathrow Airport to San Francisco from £254
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 29/4. 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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SWISS flights from London Heathrow Airport to San Francisco
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Finnair flights from London Heathrow Airport to San Francisco
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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?
The month of November is, on average, the cheapest month to fly to San Francisco from London Heathrow Airport, with most prices found around £463. If you are unable to visit San Francisco during the month of November, then departing from London Heathrow Airport during the month February is also very affordable. Most momondo users find prices during this month for around £464.
What is the cheapest day to depart on your flight to San Francisco?
The cheapest day to depart on your flight to San Francisco is on a Tuesday when prices can be found for as low as £576. This is often the case because there is less demand to fly during this day of the week. Flights from London Heathrow Airport to San Francisco on a Sunday will generally be more expensive and average around £628. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to San Francisco?
Our most recent data shows that the best time of day to fly to San Francisco is in the evening. Flights from London Heathrow Airport to San Francisco during this time can be as low as £510. Try not to purchase tickets at midday because they tend to be around £901. Of course, these prices can vary depending on the time of year and what airport you fly to.
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 £546 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 £503 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?
WestJet, TAP AIR PORTUGAL, and British Airways are the most popular carriers operating from London Heathrow to San Francisco
Which airlines fly to San Francisco?
Virgin Atlantic, Lufthansa and British Airways are the top three most popular airlines that fly to San Francisco from London Heathrow Airport according to our data. Virgin Atlantic is the first choice among our users, with 40% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 19 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 February 2025, 25 flights take off from London Heathrow Airport and land in San Francisco each day. The most common flight departure time for this route is 11:00, with 58% of daily flights taking off at midday.
How many flights depart from London Heathrow Airport to San Francisco on average per week?
180 flights are operational weekly from London Heathrow Airport to San Francisco as of February 2025. The most popular departure day for this route is Thu, 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 | £254 |
|---|---|
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. Typically, this will take 11h 00m by plane in normal conditions.
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 were last updated today.
How many operators does momondo search for flights from London Heathrow Airport to San Francisco Airport?
As of February 2025, there are 19 operators available to choose from for flights from London Heathrow Airport to San Francisco Airport.
How old do you have to be to fly from London Heathrow Airport to San Francisco Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents required for your trip to San Francisco 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 San Francisco 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 London Heathrow Airport to San Francisco?
Based on momondo bookings for flights between London Heathrow Airport and San Francisco, the leading plane model is Boeing 777, making up 30.75% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 23.20%, Airbus A380-800 with 22.45%, and Boeing 777-300ER with 13.74%.
What is the most popular airline from London Heathrow Airport to San Francisco?
Based on momondo bookings for flights between London Heathrow Airport and San Francisco, the leading airline is Virgin Atlantic, making up 27% of the total bookings. Other popular airlines include Lufthansa with 21%, British Airways with 16%, and United Airlines with 7%.
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 £306 | Free Cancellation | Rating 8.0 8,219 reviews | |||
| PriceFrom £318 | Free Cancellation | Rating 7.0 8,756 reviews | |||
| PriceFrom £369 | Free Cancellation | Rating 7.5 1,568 reviews | |||
| PriceFrom £370 | Free Cancellation | Rating 7.1 1,847 reviews | |||
| PriceFrom £372 | Free Cancellation | Rating 7.3 1,325 reviews | |||
| PriceFrom £385 | Free Cancellation | Rating 7.5 654 reviews | |||
| PriceFrom £392 | Free Cancellation | Rating 6.6 6,762 reviews | |||
| PriceFrom £399 | Free Cancellation | Rating 7.5 773 reviews | |||
| PriceFrom £399 | Free Cancellation | Rating 7.3 341 reviews | |||
| PriceFrom £400 | Free Cancellation | Rating 7.8 1,333 reviews |
Delta Flights From London Heathrow Airport to San Francisco
Delta flies from London Heathrow Airport to San Francisco around 6 times per week, with 8,213 momondo users rating the airline 8.0/10. The cheapest Delta deal from London Heathrow Airport to San Francisco in the last 72 hours was £387 (round-trip), much lower than the average airfare cost of £653 for Delta flights on this route.
KLM Flights From London Heathrow Airport to San Francisco
KLM is also a popular choice for this route. KLM flight deals for London Heathrow Airport to San Francisco start from as low as £504 round-trip, depending on your selected dates, with average KLM deals seen on momondo around £692. KLM operates 6 flights to San Francisco from London Heathrow Airport in an average week. Users have rated it 7.8/10 across 1,331 reviews.
Travelling 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?
It is quick and easy to find London to San Francisco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Francisco that suits you.
Can I find flights from London to San Francisco with flexible booking policies on momondo?
All flight searches from London to San Francisco on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from London to San Francisco?
momondo helps you find the best flight between London and San Francisco by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from London to San Francisco right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of London to San Francisco flights. All you need is a valid email address and we will do the rest; it is that quick and easy.