Cheap flights from London to San Francisco from £205
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 to San Francisco departing on 27/9. 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 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 typical price of a round-trip flight between London and San Francisco?
What is the cheapest month to fly to San Francisco?
The month of February is, on average, the cheapest month to fly to San Francisco from London, with most prices found around £423. If you are unable to visit San Francisco during the month of February, then departing from London during the month November is also very affordable. Most momondo users find prices during this month for around £429.
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 £540. This is often the case because there is less demand to fly during this day of the week. Flights from London to San Francisco on a Sunday will generally be more expensive and average around £598. 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 to San Francisco during this time can be as low as £471. Try not to purchase tickets at midday because they tend to be around £916. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest London to San Francisco flight route?
Fly from London Heathrow to San Francisco for the best London - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around £501 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from London for as low as £456 on momondo.
What cabin class options are available on London to San Francisco flights?
There are 4 cabin classes available to choose from on London 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 to San Francisco?
Vueling is the most popular carrier operating from London to San Francisco
Which airlines fly to San Francisco?
Virgin Atlantic, British Airways and Lufthansa are the top three most popular airlines that fly to San Francisco from London 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 17 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 to San Francisco on average per day?
The number of flights available between London and San Francisco is 41 per day as of July 2025. The most frequent departure time is 10:00, with 59% of daily flights leaving in the afternoon.
How many flights depart from London to San Francisco on average per week?
The number of flights available between London and San Francisco is 288 per week as of July 2025. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.
When to book flights from London to San Francisco
Cheap London to San Francisco (LON to SFO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to San Francisco
Best price found | £205 |
|---|---|
Fastest flight time | 13h 45m |
Direct flights | Every day |
Airports in San Francisco | 1 airport |
How far is London to San Francisco by plane?
A flight from London to San Francisco will travel around 5349.7 mi. 14h 00m is a normal flight duration for this route.
When did momondo last update prices for flights from London to San Francisco Airport?
Prices for flights from London to San Francisco Airport are updated daily.
How many operators does momondo search for flights from London to San Francisco Airport?
As of July 2025, there are 17 operators available to choose from for flights from London to San Francisco Airport.
How old do you have to be to fly from London 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 to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to San Francisco?
Based on momondo bookings for flights between London and San Francisco, the leading plane model is Boeing 777, making up 36.42% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 29.12%, Airbus A380-800 with 15.30%, and Boeing 787 Dreamliner with 6.89%.
What is the most popular airline from London to San Francisco?
momondo data reveals that the most frequently booked airline on the route from London to San Francisco is Virgin Atlantic, representing 25% of all bookings. The subsequent popular airlines are British Airways at 18%, Lufthansa at 17%, and United Airlines at 7%.
Best airlines flying from London to San Francisco
Compare and see reviews for airlines that fly from London to San Francisco with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £234 | Free Cancellation | Rating 8.0 7,970 reviews | |||
| PriceFrom £341 | Free Cancellation | Rating 7.1 1,912 reviews | |||
| PriceFrom £346 | Free Cancellation | Rating 7.5 1,654 reviews | |||
| PriceFrom £346 | Free Cancellation | Rating 7.3 1,416 reviews | |||
| PriceFrom £352 | Free Cancellation | Rating 7.4 8,845 reviews | |||
| PriceFrom £355 | Free Cancellation | Rating 7.4 654 reviews | |||
| PriceFrom £359 | Free Cancellation | Rating 6.6 7,093 reviews | |||
| PriceFrom £359 | Free Cancellation | Rating 7.3 352 reviews | |||
| PriceFrom £362 | Free Cancellation | Rating 7.8 1,363 reviews | |||
| PriceFrom £364 | Free Cancellation | Rating 7.6 1,304 reviews |
Delta Flights From London to San Francisco
The lowest priced Delta flight from London to San Francisco from the last 72 hours was £319. Generally, Delta has 14 flights on this route every week with an average price of £653. Delta is rated 8.0/10 by our users.
KLM Flights From London to San Francisco
KLM is also a popular choice for this route. KLM flight deals for London to San Francisco start from as low as £494 round-trip, depending on your selected dates, with average KLM deals seen on momondo around £616. KLM operates 14 flights to San Francisco from London in an average week. Users have rated it 7.8/10 across 1,363 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?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from London.
Can I find flights from London to San Francisco with flexible booking policies on momondo?
momondo does allow users to show only those flights to San Francisco from London which offer a flexible booking policy as well as other useful filters and features.
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?
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.