$296 Cheap Flights from San Francisco to London

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Find The Best Dates To Fly from San Francisco Intl. to Heathrow

Amazing SFO to LHR Flight Deals

The cheapest flights to Heathrow found within the past 7 days were $563 round trip and $296 one way. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

Can I catch a flight from SFO to LHR right now?
For information on any present Heathrow Airport travel advice and quarantine requirements, visit the Covid-19 Travel Advisor. Look before you book your flight, so you don’t get caught up.
Are there direct flights from SFO to London Heathrow?
Your next inspiring adventure is on the other side of a single flight. You can fly direct from San Francisco Airport to London Heathrow with multiple airlines, including British Airways and Virgin Atlantic.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Heathrow Airport (LHR), please visit our Customer Service Portal.
How long is the flight from San Francisco Intl. Airport (SFO) to London Heathrow?
It takes quite a while to get from San Francisco Airport to Heathrow Airport, usually around 10 hours and 21 minutes in total. Make sure you bring a decent travel pillow and wear loose-fitting, layered clothing for this long-haul flight.
What is the flight distance from SFO to Heathrow Airport (LHR)?
The flight distance from SFO to LHR is 5,400 mi. Sleeping mask? Check. Compression socks? Check. You’ll need all the long-haul essentials for this journey.
What airlines fly from SFO to Heathrow Airport?
There are a number of airlines that advertise direct flights from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR). British Airways (BA) is one of the most reputable, operating at least 60 flights each month. You should also pore through the deals on offer from Virgin Atlantic (VS). Another popular airline, it operates 30 flights each month on the San Francisco to London route. Compare the two to find your ideal fare.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with British Airways, Virgin Atlantic or SAS you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.


Traveling From
San Francisco Intl.
Traveling To
Shortest Flight Time
26 hours 9 mins
Earliest Departure Time
12:30PM BST
Latest Departure Time
10:20PM BST
Lowest Flight Price

Route Info

Flight path for flights from San Francisco International Airport to London Heathrow Airport

5,383.00 miles

Airlines & Aircraft Used on SFO to LHR Flight Routes

Airline Carrier
Air Canada
Boeing 737-700 pax
Air New Zealand
Boeing 777 all pax models
Alaska Airlines
Antonov AN-24
American Airlines
Boeing 757-200 pax
American Airlines
Canadair Regional Jet
American Airlines
Embraer 170
Jet Airways (India)
Aerospatiale/Alenia ATR 42/ ATR 72
Airbus A319
United Airlines
Antonov AN-24
United Airlines
Beechcraft 1900/1900C/1900D
United Airlines
Boeing 737-700 pax

Discover our best flights from San Francisco SFO to London LHR. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 


Find our best return flights from San Francisco SFO to London LHR at the right price  

Airfares to London LHR from San Francisco SFO currently cost between $563 and $689. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 


Book one-way flights from San Francisco SFO to London LHR 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from San Francisco SFO to London LHR on Travelocity starting at $296. Prices and availability subject to change. Additional terms may apply. 


Get to London LHR from San Francisco SFO quicker with direct flights. 

Get to London faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to LHR from SFO to take around 26 hour(s) 9 min(s).  


Find our cheapest airfares for flights from San Francisco SFO to London LHR

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to LHR from SFO. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  


Get our best airfare deals for your flight from San Francisco SFO to London LHR today 

If you’re flexible about when you travel, March is usually the cheapest month to fly from San Francisco SFO to London LHR. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 


Book flexible airline tickets for flights to London LHR from San Francisco SFO 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to LHR from SFO have this option.  


Travel with confidence when you book flights to London LHR from San Francisco SFO with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.