The cheapest times to fly from LHR to SFO are
- January 8th to April 1st
- April 16th to May 20th
- October 8th to December 9th
based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from LHR to SFO is early December. Prices can be as high as $1036 for Saturday flights during early August, or as low as $348 for Monday flights around early December.
When to Fly to San Francisco
Flying from London (LHR) to San Francisco, CA (SFO) will usually cost between $358 to $800 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early December with an average ticket price of $356. Due to high demand the most expensive time to fly is early August, with an average price of $920. Planning your trip to low-cost times can easily save you $564 on economy flights and even more on first-class flights. Generally, any price below $411 can be considered a good price for a round-trip LHR to SFO flight.
See below for a graph of average weekly prices for the LHR to SFO route. All prices are for round-trip tickets in USD.
Compared to other flights, the LHR to SFO flight is much cheaper than the average and costs less than the average flight leaving from London. The average price per mile (for a direct flight) is $0.05, which is far below average.
Flight Prices by Day of the Week
Monday is usually the cheapest day to fly to SFO, and Tuesday the cheapest day to fly back into LHR. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $51 (10%) on this flight.
Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $438. Return trip prices are from the SFO to LHR flight, and often highlight the quality of our data in showing the same trend.
Departing Prices by Day
Return Trip Prices by Day
Nonstop Flights and Layovers
Travelers looking to fly from LHR to SFO can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 10 hour 37 minutes may be realistic.
Flight Questions Answered
Still have questions about flying from LHR to SFO? We’ve got answers.
Which airlines fly this route?
You can find 27 major airlines flying this route most often: Aer Lingus, Aeromexico, Air Canada, Air France, Air New Zealand, Alaska, Alitalia, American, Austrian, British Airways, Brussels Airlines, Condor, Delta, Finnair, Iberia, Icelandair, KLM, LOT, Lufthansa, SAS, Singapore Airlines, SWISS, Tap Air Portugal, Turkish Airlines, United, Virgin Atlantic, WestJet, and potentially more during busy seasons.
How far away is it from San Francisco International Airport to London Heathrow Airport?
The distance between the two airports is roughly 5353 miles or 8615 kilometers.
How long does it take to fly from LHR to SFO?
The real-world flight time for a nonstop LHR to SFO flight is about 10 hour 37 minutes.
How many flights go between London and San Francisco, CA?
It depends on the day of the week and the date, but a typical day might have around 64 available flights from LHR to SFO.
Airport Location Info
|Origination airport name||London Heathrow Airport|
|Country||the United Kingdom|
|Destination airport name||San Francisco International Airport|
|City||San Francisco, CA|
|Country||the United States|
Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.