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 11h 00m. 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 between 4 and 5 nonstop flights that take off from London Heathrow Airport and land in San Francisco, with an average flight time of 11h 13m. The most common departure time is 11:00 a.m. and most flights take off in the morning. Each week, there are 31 flights. The most frequent day of departure is Monday, when 16% of all weekly flights depart. The fewest flights depart on a Thursday. Visit our flight page for the latest deals!>/a>

Question 3

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

Accepted Answer

Each day, there are between 4 and 5 nonstop flights that take off from London Heathrow Airport and land in San Francisco, with an average flight time of 11h 13m. The most common departure time is 11:00 a.m. and most flights take off in the morning. Each week, there are 31 flights. The most frequent day of departure is Monday, when 16% of all weekly flights depart. The fewest flights depart on a Thursday. Visit our flight page for the latest deals!>/a>

Question 4

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$ 681 for a one-way ticket and C$ 870 for a round-trip. <a href='/flight-routes/London-Heathrow-LHR/San-Francisco-SFO'>Visit our flight page for the latest deals!>/a>

Question 5

Which airlines fly most frequently between London and San Francisco?

Accepted Answer

London and San Francisco are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (14 flights per week), British Airways (10 flights per week), and Virgin Atlantic (7 flights per week). Visit our flight page for the latest deals!>/a>

Question 6

Which airlines fly most frequently between London and San Francisco?

Accepted Answer

London and San Francisco are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (14 flights per week), British Airways (10 flights per week), and Virgin Atlantic (7 flights per week). Visit our flight page for the latest deals!>/a>

Question 7

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 Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from London to San Francisco. For your return ticket, we recommend flying on a Monday and avoiding Fridays for the best deals. Visit our flight page for the latest deals!>/a>

Question 8

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 Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from London to San Francisco. For your return ticket, we recommend flying on a Monday and avoiding Fridays for the best deals. Visit our flight page for the latest deals!>/a>

Question 9

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 10:05 am and will be landing in San Francisco at 1:20 pm.

Question 10

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 5:20 pm and lands at 8:20 pm.

Question 11

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 12

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 13

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 14

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 15

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 16

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 17

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 18

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$ 778 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is C$ 1,187 and C$ 1,183 respectively.

Question 19

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$ 778 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is C$ 1,187 and C$ 1,183 respectively.

Question 20

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 21

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 22

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 23

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 24

What is the cheapest layover airport when flying from London to San Francisco?

Accepted Answer

Flights via Lisbon (LIS) offer the most affordable fares, with an average round-trip price of C$ 1,295.

Question 25

What is the most popular layover airport when flying from London to San Francisco?

Accepted Answer

Lisbon (LIS) is the top choice – 50% of KAYAK users who clicked on one-stop flights from London to San Francisco picked an itinerary connecting there.

Question 26

Which layover airport has the quickest connection when flying from London to San Francisco?

Accepted Answer

If you prefer a quick connection, Lisbon (LIS) often has the shortest layovers from London to San Francisco, with an average of 3h 15m.

Question 27

Which layover airport offers the shortest total travel time from London to San Francisco?

Accepted Answer

Consider flying via Lisbon (LIS) for the shortest journey. The average one-way travel time for flights connecting there is 16h 35m.

Question 28

How often are flights from London to San Francisco delayed?

Accepted Answer

Weekly flights between London and San Francisco historically see delays in approximately 13% of cases, with the average delay over the past year being 141 minutes.

Question 29

Which airline has the best punctuality record on London to San Francisco flights?

Accepted Answer

Based on our data, Virgin Atlantic have experienced the fewest delays on this route in the past 12 months, with only about 11% of their flights encountering any delays.

Question 30

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Statistically, Tuesday is the day of the week with the fewest delays on this flight route, while Sunday has typically experienced more delays than other days.

Question 31

What is the most punctual flight time for London to San Francisco flights?

Accepted Answer

Typically, flights leaving in the morning tend to face fewer delays, whereas flights in the evening have historically encountered delays more often.

Question 32

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 33

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 34

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, which saves you about 7% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Question 35

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, which saves you about 7% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Question 36

Can I save money by flying with a layover from London Heathrow Airport to San Francisco?

Accepted Answer

No, with an average price for the route of C$ 1,659, prices are generally cheapest when you fly direct.

Question 37

Can I save money by flying with a layover from London Heathrow Airport to San Francisco?

Accepted Answer

No, with an average price for the route of C$ 1,659, prices are generally cheapest when you fly direct.

Low season	January
High season	July
Cheapest flight	C$ 681

LHR - SFO

C$ 681 Find Cheap Flights from London to San Francisco

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

Everything you should know

Cheap Flights from London to San Francisco (LHR-SFO)

Recent round-trip flight deals from London to San Francisco

Recent one-way flight deals from London to San Francisco

Recent last minute flight deals from London to San Francisco

Recent direct flight deals from London to San Francisco

KAYAK's insights & trends for London to San Francisco flights

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$ 778 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is C$ 1,187 and C$ 1,183 respectively.

Can I save money by flying with a layover from London Heathrow Airport to San Francisco?

No, with an average price for the route of C$ 1,659, prices are generally cheapest when you fly direct.

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, which saves you about 7% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Which airlines fly most frequently between London and San Francisco?

London and San Francisco are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (14 flights per week), British Airways (10 flights per week), and Virgin Atlantic (7 flights per week).

How often are flights from London to San Francisco delayed?

Weekly flights between London and San Francisco historically see delays in approximately 13% of cases, with the average delay over the past year being 141 minutes.

What is the most punctual flight time for London to San Francisco flights?

Typically, flights leaving in the morning tend to face fewer delays, whereas flights in the evening have historically encountered delays more often.

What day of the week experiences the fewest flight delays on this route?

Statistically, Tuesday is the day of the week with the fewest delays on this flight route, while Sunday has typically experienced more delays than other days.

Which airline has the best punctuality record on London to San Francisco flights?

Based on our data, Virgin Atlantic have experienced the fewest delays on this route in the past 12 months, with only about 11% of their flights encountering any delays.

What is the most popular layover airport when flying from London to San Francisco?

Lisbon (LIS) is the top choice – 50% of KAYAK users who clicked on one-stop flights from London to San Francisco picked an itinerary connecting there.

What is the cheapest layover airport when flying from London to San Francisco?

Flights via Lisbon (LIS) offer the most affordable fares, with an average round-trip price of C$ 1,295.

Which layover airport offers the shortest total travel time from London to San Francisco?

Consider flying via Lisbon (LIS) for the shortest journey. The average one-way travel time for flights connecting there is 16h 35m.

Which layover airport has the quickest connection when flying from London to San Francisco?

If you prefer a quick connection, Lisbon (LIS) often has the shortest layovers from London to San Francisco, with an average of 3h 15m.

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 11h 00m. 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 10:05 am and will be landing in San Francisco at 1:20 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 5:20 pm and lands at 8:20 pm.

Expert advice for your flight from London to San Francisco

Good to know

When to book flights from London to San Francisco

Flights from London to San Francisco: the best tips from KAYAK users' own experiences

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$ 681 for a one-way ticket and C$ 870 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.

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?

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