Question 1

How long does a flight from London to San Francisco take?

Accepted Answer

The duration of a direct flight to San Francisco from London is typically 10h 20m. The journey crosses a distance of 13,857 km. Visit our flight page for the latest deals!>/a>

Question 2

How many flights are there between London Heathrow Airport and San Francisco per day?

Accepted Answer

Each day, there are 7 nonstop flights that take off from London Heathrow Airport and land in San Francisco, with an average flight time of 11h 02m. The most common departure time is 4:00 p.m. and most flights take off in the morning. Each week, there are 49 flights and there are the same amount of flights each day (7). Visit our flight page for the latest deals!>/a>

Question 3

What is the cheapest flight from London Heathrow Airport to San Francisco?

Accepted Answer

In the last 3 days, the lowest price for a flight from London Heathrow Airport to San Francisco was C$ 545 for a one-way ticket and C$ 483 for a round-trip. <a href='/flight-routes/London-Heathrow-LHR/San-Francisco-SFO'>Visit our flight page for the latest deals!>/a>

Question 4

Which airlines fly most frequently between London and San Francisco?

Accepted Answer

United Airlines connects London to San Francisco with 21 flights per week. British Airways also offers 14 flights per week, while Virgin Atlantic follows with 14 flights per week. Visit our flight page for the latest deals!>/a>

Question 5

What’s the cheapest day of the week to fly from London to San Francisco?

Accepted Answer

If your flying dates are flexible, you should consider flying to San Francisco on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from London to San Francisco. For your return ticket, we recommend flying on a Wednesday and avoiding Saturdays for the best deals. Visit our flight page for the latest deals!>/a>

Question 6

What’s the earliest departure time from London to San Francisco?

Accepted Answer

Early birds can take the earliest flight from London Heathrow Airport at 10:35 am and will be landing in San Francisco at 1:35 pm.

Question 7

What’s the latest departure time from London to San Francisco?

Accepted Answer

If you prefer to fly at night, the latest flight from London Heathrow Airport to San Francisco jets off at 4:25 pm and lands at 7:30 pm.

Question 8

Which airlines fly direct between London Heathrow Airport and San Francisco?

Accepted Answer

There are 3 airlines that fly direc from London Heathrow Airport to San Francisco. They are: British Airways, United Airlines and Virgin Atlantic. The cheapest price of all airlines flying this route was found with United Airlines at C$ 870 for a round-trip flight. On average, the best prices for this route can be found at United Airlines.

Question 9

Which airlines offer Wi-Fi service onboard planes from London to San Francisco?

Accepted Answer

Only KLM offers inflight Wi-Fi service on the London to San Francisco flight route.

Question 10

Which aircraft models fly most regularly from London to San Francisco?

Accepted Answer

The Boeing 777 is the aircraft model that flies most regularly on the London to San Francisco flight route.

Question 11

Which airline alliances offer flights from London to San Francisco?

Accepted Answer

oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between London and San Francisco, with Star Alliance being the most commonly used for this route.

Question 12

On which days can I fly direct from London to San Francisco?

Accepted Answer

There are direct flights from London to San Francisco on a daily basis.

Question 13

Is Heathrow family friendly?

Accepted Answer

Heathrow Airport has at least one children’s play area in every terminal and most restaurants do children’s menus, and some promise to serve food within 15min. You can pre-order nappies and baby milk via the on-site chemist in each terminal, which reduces the need to carry more things through security.

Question 14

How many airports are there in San Francisco and how many have direct routes from London?

Accepted Answer

There are three airports in the San Francisco Bay area: San Francisco International Airport (SFO), Oakland International Airport (OAK) and San Jose International Airport (SJC). SFO is the airport that has more international airline options while Oakland and San Jose have more low-cost carriers and domestic routes. Both British Airways and Virgin fly non-stop to San Francisco SFO Airport from London Heathrow.

Question 15

What is the best way to travel to London Heathrow to catch my plane to San Francisco SFO?

Accepted Answer

There are two trains from central London, leaving Paddington station; the Heathrow Express takes 15min, non-stop and the Heathrow Connect takes 30min with a few stops. It is also very straightforward to catch the London Underground - the journey takes about an hour from central London.

Question 16

Once landed from London Heathrow, what is the best way to travel into San Francisco using public transport?

Accepted Answer

The Bay Area Rapid Transit (BART) is easy, taking 30min, with trains leaving 3-4 times every hour. Passengers can connect to the BART from any of the terminals via the free Air Train. BART trains run from 5:00 in the week, 6:00 on Saturdays, and 8:00 on Sundays and stop at midnight every day. There are also buses that run from San Francisco SFO Airport to various parts of the state. For example, the Evans Airport shuttle serves Napa, the Marin Airporter goes into Marin County and the Sonoma County Airport Express carries passengers to Sonoma County.

Question 17

What is the cheapest month to fly from London Heathrow Airport to San Francisco?

Accepted Answer

The cheapest month for flights from London Heathrow Airport to San Francisco is February, where tickets cost C$ 775 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is C$ 1,282 and C$ 1,254 respectively.

Question 18

How does KAYAK find such low prices on flights from London to San Francisco?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to San Francisco. <a href='/flight-routes/London-Heathrow-LHR/San-Francisco-SFO'>Visit our flight page for the latest deals!>/a>

Question 19

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to San Francisco?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from London is likely to change within 7 days, so travellers know whether to wait or book now. <a href='/flight-routes/London-Heathrow-LHR/San-Francisco-SFO'>Visit our flight page for the latest deals!>/a>

Question 20

What is the Hacker Fare option on flights from London to San Francisco?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to London with another airline. <a href='/flight-routes/London-Heathrow-LHR/San-Francisco-SFO'>Visit our flight page for the latest deals!>/a>

Question 21

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to San Francisco?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. <a href='/flight-routes/London-Heathrow-LHR/San-Francisco-SFO'>Visit our flight page for the latest deals!>/a>

Question 22

Which cabin class options are there for flights between London Heathrow Airport and San Francisco?

Accepted Answer

There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 23

Which airlines provide the cheapest flights from London to San Francisco?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from London to San Francisco were found on Scandinavian Airlines (C$ 660) and British Airways (C$ 723).

Question 24

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

Accepted Answer

To get a below average price on the flight from London Heathrow Airport to San Francisco, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Low season	January
High season	July
Cheapest flight	C$ 660

LHR - SFO

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Get data-powered insights and trends into flights from London to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from London to San Francisco?

What is the cheapest month to fly from London Heathrow Airport to San Francisco?

The cheapest month for flights from London Heathrow Airport to San Francisco is February, where tickets cost C$ 775 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is C$ 1,282 and C$ 1,254 respectively.

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

To get a below average price on the flight from London Heathrow Airport to San Francisco, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Which airlines provide the cheapest flights from London to San Francisco?

In the past 3 days, the cheapest round-trip tickets from London to San Francisco were found on Scandinavian Airlines (C$ 660) and British Airways (C$ 723).

Which airlines fly most frequently between London and San Francisco?

United Airlines connects London to San Francisco with 21 flights per week. British Airways also offers 14 flights per week, while Virgin Atlantic follows with 14 flights per week.

Which airlines fly direct between London Heathrow Airport and San Francisco?

Which cabin class options are there for flights between London Heathrow Airport and San Francisco?

There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How many flights are there between London Heathrow Airport and San Francisco per day?

How long does a flight from London to San Francisco take?

The duration of a direct flight to San Francisco from London is typically 10h 20m. The journey crosses a distance of 13,857 km.

What’s the earliest departure time from London to San Francisco?

Early birds can take the earliest flight from London Heathrow Airport at 10:35 am and will be landing in San Francisco at 1:35 pm.

What’s the latest departure time from London to San Francisco?

If you prefer to fly at night, the latest flight from London Heathrow Airport to San Francisco jets off at 4:25 pm and lands at 7:30 pm.

Good to know

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FAQs for booking London to San Francisco flights

Is Heathrow family friendly?

How many airports are there in San Francisco and how many have direct routes from London?

What is the best way to travel to London Heathrow to catch my plane to San Francisco SFO?

There are two trains from central London, leaving Paddington station; the Heathrow Express takes 15min, non-stop and the Heathrow Connect takes 30min with a few stops. It is also very straightforward to catch the London Underground - the journey takes about an hour from central London.

Once landed from London Heathrow, what is the best way to travel into San Francisco using public transport?

What is the cheapest flight from London Heathrow Airport to San Francisco?

In the last 3 days, the lowest price for a flight from London Heathrow Airport to San Francisco was C$ 545 for a one-way ticket and C$ 483 for a round-trip.

Which airlines offer Wi-Fi service onboard planes from London to San Francisco?

Only KLM offers inflight Wi-Fi service on the London to San Francisco flight route.

Which aircraft models fly most regularly from London to San Francisco?

The Boeing 777 is the aircraft model that flies most regularly on the London to San Francisco flight route.

Which airline alliances offer flights from London to San Francisco?

oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between London and San Francisco, with Star Alliance being the most commonly used for this route.

On which days can I fly direct from London to San Francisco?

There are direct flights from London to San Francisco on a daily basis.

How does KAYAK find such low prices on flights from London to San Francisco?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to San Francisco.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to San Francisco?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from London is likely to change within 7 days, so travellers know whether to wait or book now.

What is the Hacker Fare option on flights from London to San Francisco?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to London with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to San Francisco?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from London Heathrow Airport to San Francisco

Prefer to fly direct from London to San Francisco?

Top airline flying from London to San Francisco

Everything you need to know for your flight from London to San Francisco

Information on your arrival and departure airports

Cabin class types available on flights to San Francisco

Complete your trip to San Francisco with a hotel stay or car rental

Find direct flights to and from London and San Francisco

Flights to other popular destinations

Flights from domestic origins to San Francisco

Choose which airport to fly into in London

Find deals for your return flight