The cheapest times to fly from SFO to LHR are
- January 8th to March 25th
- April 16th to May 27th
- October 1st to December 9th (except the week of November 19th)
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 SFO to LHR is mid November. Prices can be as high as $857 for Saturday flights during early August, or as low as $377 for Tuesday flights around mid November.
When to Fly to London
Flying from San Francisco, CA (SFO) to London (LHR) will usually cost between $386 to $670 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid November with an average ticket price of $392. Due to high demand the most expensive time to fly is early August, with an average price of $709. Planning your trip to low-cost times can easily save you $317 on economy flights and even more on first-class flights. Generally, any price below $423 can be considered a good price for a round-trip SFO to LHR flight.
See below for a graph of average weekly prices for the SFO to LHR route. All prices are for round-trip tickets in USD.
Compared to other flights, the SFO to LHR flight is much cheaper than the average and costs much less than the average flight leaving from San Francisco. The average price per mile (for a direct flight) is $0.05, which is far below average.
Flight Prices by Day of the Week
Tuesday is usually the cheapest day to fly to LHR, and Monday the cheapest day to fly back into SFO. 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 Tuesday and returning a week later will cost an average of $441. Return trip prices are from the LHR to SFO 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 SFO to LHR 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.
Alternative Nearby Airports
Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is a nonstop flight from SFO to LHR while comparing.
- 25 miles (40 km) away from LHR
- Usually 0.12% less expensive than LHR
- Nonstop flights available
Flight Questions Answered
Still have questions about flying from SFO to LHR? We’ve got answers.
Which airlines fly this route?
You can find 26 major airlines flying this route most often: Aer Lingus, Aeromexico, Air Canada, Air France, Air New Zealand, Alaska, 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 London Heathrow Airport to San Francisco International Airport?
The distance between the two airports is roughly 5353 miles or 8615 kilometers.
How long does it take to fly from SFO to LHR?
The real-world flight time for a nonstop SFO to LHR flight is about 10 hour 37 minutes.
How many flights go between San Francisco, CA and London?
It depends on the day of the week and the date, but a typical day might have around 79 available flights from SFO to LHR.
Airport Location Info
|Origination airport name||San Francisco International Airport|
|City||San Francisco, CA|
|Country||the United States|
|Destination airport name||London Heathrow Airport|
|Country||the United Kingdom|
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.