Q: What is the typical price of a round-trip flight between San Francisco and London Heathrow Airport?

Prices are currently low for flights on this route. Typical prices usually range from £467 to £645. The lowest price recently found on this route was £310.

Question 1

What cabin class options are available on San Francisco to London Heathrow flights?

Accepted Answer

There are 4 cabin classes available to choose from on San Francisco to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 2

What is the cheapest San Francisco to London Heathrow flight route?

Accepted Answer

Fly from San Francisco to London Heathrow for the best San Francisco - London Heathrow flight prices

Question 3

Which airlines fly to London Heathrow Airport?

Accepted Answer

Virgin Atlantic, United Airlines and British Airways 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 35% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 8 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Question 4

Which stopover airport has the shortest travel time from San Francisco to London Heathrow Airport?

Accepted Answer

Flights connecting via Copenhagen (CPH) have the shortest average one-way travel time: 14h 00m.

Question 5

What is the typical price of a round-trip flight between San Francisco and London Heathrow Airport?

Accepted Answer

Prices are currently low for flights on this route.Typical prices usually range from £467 to £645.
The lowest price recently found on this route was £310.

Question 6

How have San Francisco to London Heathrow Airport flight prices changed over time?

Accepted Answer

As of August 2025, prices for San Francisco to London Heathrow Airport flights are approximately 2% cheaper when compared to flights at the same time last year.

Question 7

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

Accepted Answer

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from San Francisco to London Heathrow Airport in the evening for as low as £531. 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 £791 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.

Question 8

How many flights depart from San Francisco to London Heathrow Airport on average per week?

Accepted Answer

As of August 2025, there are 294 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.

Question 9

What is the cheapest month to fly to London Heathrow Airport?

Accepted Answer

In general, October 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 £474. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from San Francisco averaging around £492.

Question 10

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

Accepted Answer

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 £565 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 £514 on momondo.

Question 11

Which stopover airport offers the lowest fares from San Francisco to London Heathrow Airport?

Accepted Answer

Flights via Copenhagen (CPH) offer the lowest average return price of £361.

Question 12

Which airport is the most popular for stopovers for flights between San Francisco and London Heathrow Airport?

Accepted Answer

Lisbon (LIS) was the most common stop: 90% of momondo users choosing one-stop flights on this route connected there.

Question 13

What is the cheapest airline that flies from San Francisco to London Heathrow?

Accepted Answer

TAP AIR PORTUGAL, WestJet, and LEVEL are the most popular carriers operating from San Francisco to London Heathrow

Question 14

What is the cheapest day to depart on your flight to London Heathrow Airport?

Accepted Answer

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 £489. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Thursday is £672.

Question 15

Which stopover airport has the shortest connection time from San Francisco to London Heathrow Airport?

Accepted Answer

Copenhagen (CPH) has the shortest average stopover time for this route: 1h 10m.

Question 16

How many flights depart from San Francisco to London Heathrow Airport on average per day?

Accepted Answer

The number of flights available between San Francisco and London Heathrow Airport is 42 per day as of August 2025. The most frequent departure time is 16:00, with 59% of daily flights leaving in the afternoon.

Question 17

When did momondo last update prices for flights from San Francisco Airport to London Heathrow Airport?

Accepted Answer

Prices for flights from San Francisco Airport to London Heathrow Airport are refreshed on a daily basis.

Question 18

How many operators does momondo search for flights from San Francisco Airport to London Heathrow Airport?

Accepted Answer

There are 8 operators available for flights from San Francisco Airport to London Heathrow Airport as of August 2025.

Question 19

How old do you have to be to fly from San Francisco Airport to London Heathrow Airport?

Accepted Answer

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.

Question 20

What documentation or ID do you need to fly to London Heathrow Airport?

Accepted Answer

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.

Best price found	£156
Fastest flight time	10h 25m
Direct flights	Every day

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom £361	Free Cancellation	Rating 7.8 1,384 reviews	Search KLM flights
British Airways	PriceFrom £383	Free Cancellation	Rating 6.6 7,267 reviews	Search British Airways flights
TAP AIR PORTUGAL	PriceFrom £387	Free Cancellation	Rating 7.1 1,948 reviews	Search TAP AIR PORTUGAL flights
United Airlines	PriceFrom £392	Free Cancellation	Rating 7.4 8,915 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £393	Free Cancellation	Rating 7.4 657 reviews	Search Virgin Atlantic flights
Iberia	PriceFrom £423	Free Cancellation	Rating 7.0 2,882 reviews	Search Iberia flights
Lufthansa	PriceFrom £426	Free Cancellation	Rating 6.8 7,321 reviews	Search Lufthansa flights
Air Canada	PriceFrom £430	Free Cancellation	Rating 7.1 9,956 reviews	Search Air Canada flights

Cheap flights from San Francisco to London from £156

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 16/9. 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 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?

What is the cheapest month to fly to London Heathrow Airport?

What is the cheapest day to depart on your flight to London Heathrow Airport?

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

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 to London Heathrow Airport?

What cabin class options are available on San Francisco to London Heathrow flights?

There are 4 cabin classes available to choose from on San Francisco to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have San Francisco to London Heathrow Airport flight prices changed over time?

As of August 2025, prices for San Francisco to London Heathrow Airport flights are approximately 2% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from San Francisco to London Heathrow?

TAP AIR PORTUGAL, WestJet, and LEVEL are the most popular carriers operating from San Francisco to London Heathrow

Which airlines fly to London Heathrow Airport?

Which airport is the most popular for stopovers for flights between San Francisco and London Heathrow Airport?

Lisbon (LIS) was the most common stop: 90% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from San Francisco to London Heathrow Airport?

Flights via Copenhagen (CPH) offer the lowest average return price of £361.

Which stopover airport has the shortest travel time from San Francisco to London Heathrow Airport?

Flights connecting via Copenhagen (CPH) have the shortest average one-way travel time: 14h 00m.

Which stopover airport has the shortest connection time from San Francisco to London Heathrow Airport?

Copenhagen (CPH) has the shortest average stopover time for this route: 1h 10m.

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 42 per day as of August 2025. The most frequent departure time is 16:00, with 59% of daily flights leaving in the afternoon.

How many flights depart from San Francisco to London Heathrow Airport on average per week?

As of August 2025, there are 294 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

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When did momondo last update prices for flights from San Francisco Airport to London Heathrow Airport?

How many operators does momondo search for flights from San Francisco Airport to London Heathrow Airport?

How old do you have to be to fly from San Francisco Airport to London Heathrow Airport?

What documentation or ID do you need to fly to London Heathrow Airport?

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What is the most popular airline from San Francisco to London Heathrow Airport?

Best airlines flying from San Francisco to London Heathrow Airport

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KLM Flights From San Francisco to London Heathrow Airport

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