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

View AU$630 flight on Tue, 16 Mar 2027Opens in a new window

Flight 1

Popular airlines from San Francisco International Airport (SFO) to Heathrow Airport (LHR)

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Fri, 6 Nov - Fri, 13 Nov
SFO
San Francisco
LHR
London
AU$954 Return, found 6 days ago
AU$954
Return
found 6 days ago
Select TAP Portugal flight, departing Fri, 6 Nov from San Francisco to London, returning Fri, 13 Nov, priced at AU$954 found 6 days ago
Scandinavian Airlines
Fri, 6 Nov - Fri, 13 Nov
SFO
San Francisco
LHR
London
AU$1,103 Return, found 6 days ago
AU$1,103
Return
found 6 days ago
Select Scandinavian Airlines flight, departing Fri, 6 Nov from San Francisco to London, returning Fri, 13 Nov, priced at AU$1,103 found 6 days ago
Virgin Atlantic
Mon, 3 Aug - Thu, 20 Aug
SFO
San Francisco
LHR
London
AU$1,180 Return, found 6 days ago
AU$1,180
Return
found 6 days ago
Select Virgin Atlantic flight, departing Mon, 3 Aug from San Francisco to London, returning Thu, 20 Aug, priced at AU$1,180 found 6 days ago
Delta
Fri, 6 Nov - Fri, 13 Nov
SFO
San Francisco
LHR
London
AU$1,221 Return, found 6 days ago
AU$1,221
Return
found 6 days ago
Select Delta flight, departing Fri, 6 Nov from San Francisco to London, returning Fri, 13 Nov, priced at AU$1,221 found 6 days ago
United
Mon, 14 Sept - Sun, 20 Sept
SFO
San Francisco
LHR
London
AU$1,235 Return, found 1 day ago
AU$1,235
Return
found 1 day ago
Select United flight, departing Mon, 14 Sept from San Francisco to London, returning Sun, 20 Sept, priced at AU$1,235 found 1 day ago
KLM
Wed, 4 Nov - Wed, 2 Dec
SFO
San Francisco
LHR
London
AU$1,259 Return, found 5 days ago
AU$1,259
Return
found 5 days ago
Select KLM flight, departing Wed, 4 Nov from San Francisco to London, returning Wed, 2 Dec, priced at AU$1,259 found 5 days ago
Delta
Mon, 14 Sept - Sun, 20 Sept
SFO
San Francisco
LHR
London
AU$1,259 Return, found 1 day ago
AU$1,259
Return
found 1 day ago
Select Delta flight, departing Mon, 14 Sept from San Francisco to London, returning Sun, 20 Sept, priced at AU$1,259 found 1 day ago
Finnair
Fri, 6 Nov - Fri, 13 Nov
SFO
San Francisco
LHR
London
AU$1,260 Return, found 6 days ago
AU$1,260
Return
found 6 days ago
Select Finnair flight, departing Fri, 6 Nov from San Francisco to London, returning Fri, 13 Nov, priced at AU$1,260 found 6 days ago
Air Canada
Mon, 14 Sept - Sun, 20 Sept
SFO
San Francisco
LHR
London
AU$1,268 Return, found 1 day ago
AU$1,268
Return
found 1 day ago
Select Air Canada flight, departing Mon, 14 Sept from San Francisco to London, returning Sun, 20 Sept, priced at AU$1,268 found 1 day ago
Swiss International Air Lines
Fri, 6 Nov - Fri, 13 Nov
SFO
San Francisco
LHR
London
AU$1,281 Return, found 6 days ago
AU$1,281
Return
found 6 days ago
Select Swiss International Air Lines flight, departing Fri, 6 Nov from San Francisco to London, returning Fri, 13 Nov, priced at AU$1,281 found 6 days ago

Find the cheapest month to fly from San Francisco (SFO) to London (LHR)

April is typically the cheapest month to fly

From AU$847 - AU$1,829 per traveller.

Frequently asked questions

How much does a flight from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) cost?
One-way flights typically cost between $986 and $11,198 and return flights often range between $1,889 and $16,886. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
February is typically the cheapest month to fly from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow), with average round-trip fares around 1601 CAD. This is about 16% lower than the average price throughout the year. February often sees lower prices because it falls outside of peak holiday seasons, when travel demand tends to decrease. Other cheap months to fly from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) include September and October.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
Enter SFO to LHR and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
To find a cheap flight from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
The best airline to fly with from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) will differ from traveler to traveler. If you like to fly early, UA offers early morning flights. If price is the most important factor, VS typically offers the lowest fares. AA offers the most daily flights from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
When looking for the best time to fly from San Francisco International Airport (SFO) to London Heathrow (LHR), it's helpful to consider both price and popularity. Based on booking data from the past year, you'll find the cheapest flights in February and September, with average round-trip fares around 1601 CAD. While these months offer great value, the most popular times to travel are typically March and April, meaning you'll have plenty of flight options and schedules to choose from during those periods. If you're flexible, aiming for September could give you a good balance of reasonable prices and pleasant early autumn weather in London.*Prices based on flights available on Expedia in the last year.
How many flights per day from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
There are approximately 7 nonstop flights per day from San Francisco Intl. (SFO) to Heathrow (LHR). For even more choice, look at flights that include layovers. You'll find around 160 connecting flights per day. Some common connection points include John F. Kennedy Intl. (JFK), Logan Intl. (BOS), and Los Angeles Intl. (LAX).
What is the earliest flight from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
The earliest flight from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) typically departs at approximately 12:10 AM local time. This service is operated by Delta and is seasonal, active in January and December. An early departure like this can help you maximize your time in London. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
You'll find the most flights from San Francisco Intl. (SFO) to Heathrow (LHR) on a Friday, with around 171 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, American Airlines, and Delta Air Lines. Flight schedules are consistent throughout the week, with Friday offering only slightly more flights than other days.
What are the most popular departure times for flights from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
The most popular departure times for flights from San Francisco Intl. (SFO) to Heathrow (LHR) are in the afternoon, from 3pm to 6pm. About 32% of passengers prefer this time. Many major carriers, including Virgin Atlantic, United Airlines and British Airways, offer flights during this window. This timing works well because you can enjoy a full day in San Francisco before your flight, and you'll arrive in London ready to start your day.
How long does it take to fly from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
Flying nonstop from SFO to LHR takes around 10 hours 30 minutes, with the route covering approximately 5,355 miles. Flights with a layover typically take 3 hours 30 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
Select the "Business class" and "First class" filters when looking for SFO to LHR flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How much is a business class flight from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
A non-stop, one-way business class flight from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) is usually around 20,851 CAD - 25,524 CAD. You may also be able to find a cheaper business class journey between San Francisco, CA (SFO-San Francisco Intl. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Anaa (AAA) (AAA) to Toronto, ON (YYZ-Pearson Intl.) (YYZ) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) flight with Expedia?
It's easy to earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London from San Francisco Intl. (SFO)?
When traveling from San Francisco Intl. (SFO) to London, you can fly into Gatwick (LGW), Heathrow (LHR), London City (LCY) and London Intl. (YXU). Some flights may connect through major hubs like Dallas-Fort Worth Intl. (DFW), Charlotte-Douglas Intl. (CLT), O'Hare Intl. (ORD) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) at the last minute?
Typically, booking a last minute flight from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) flight and hotel package?
Securing a San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow)?
If you booked your San Francisco, CA (SFO-San Francisco Intl.) to London (LHR-Heathrow) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, ITA Airways, Iberia, KLM, Lufthansa, Singapore Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Return price
AU$953
Distance
8567 km
Average flight time
18 hours 27 mins

Book with confidence

Your quick guide to flights from San Francisco to London

Pick up great flights from San Francisco to London

With Expedia, you have your pick of flights a day with 20 airlines covering flights from San Francisco to London. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from San Francisco to London that take around hours.

Find cheap flights from San Francisco to London

From the great flight deals with prices currently ranging from AU$954 to AU$1,281, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from San Francisco to London around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to London is normally in November.

Reasons to book your flight from San Francisco to London with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from San Francisco to London across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to London right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from San Francisco to London

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