Cheap flights from San Francisco to London
One-way fares from $300, found recently by travellers. Plus what 5 days in London costs once you land.
Cheapest dates we found
- 10 Feb2027SFO → LHRAC · 1 stop · 11h 50m$300one way
- 13 Oct2026SFO → LHRB6 · 1 stop · 12h 59m$323one way
- 7 Nov2026SFO → LHRB6 · 1 stop · 12h 20m$334one way
- 3 Nov2026SFO → LHRB6 · 1 stop · 12h 39m$341one way
- 20 Oct2026SFO → LHRB6 · 1 stop · 12h 36m$342one way
- 2 Nov2026SFO → STNEI · 1 stop · 11h 30m$362one way
- 8 Nov2026SFO → LTNEI · 1 stop · 11h 25m$371one way
- 28 Oct2026SFO → LGWEI · 1 stop · 11h 35m$388one way
One-way economy prices travellers found on Aviasales in the last few days. They change often, so open a fare to see today's price.
Lowest fare by month
Lowest one-way fare seen for each month. Months with no price had no recent searches.
Airlines on this route
Recent cheap fares were with AC, B6, EI, TAP Air Portugal. Low-cost airlines often charge extra for checked bags and seats, so compare the full price.
When to go to London
May to September has the best weather. Winter is quieter and hotel prices drop after the new year.
Money-saving tips for London
- Tap the same contactless card or phone for every journey; daily and weekly caps apply automatically.
- Meal deals from supermarkets and street food markets keep lunch cheap.
- Buses are cheaper than the Tube, with a flat fare and free transfers within an hour.
Questions
How much is a flight from San Francisco to London?
The cheapest one-way fare we found recently was $300 with AC on 10 Feb 2027. Most of the fares we saw were between $300 and $388 one way. Prices change daily, so open the fare to see today's price.
How long is the flight from San Francisco to London?
The quickest flight in our recent results took 11h 20m with 1 stop.
Are there direct flights from San Francisco to London?
The cheapest fares we found all had at least one stop. Non-stop flights may exist at higher prices, so check the flight search.
What is the cheapest month to fly from San Francisco to London?
In our recent results, February had the lowest fare ($300 one way). This is based on prices other travellers found, not a forecast.
How much money do I need for 5 days in London?
About $485 for one backpacker, or $2,300 for two people travelling mid-range (hotel, food, transport and sights, flights not included). Add about $600 per person for a return flight from San Francisco.
More flights from San Francisco
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- San Francisco → Paris
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- All flights from San Francisco
Fly to London from
- Istanbul
- Lisbon
- Barcelona
- Rome
- Paris
- Amsterdam
- Prague
- Budapest
- Athens
- New York
- Mexico City
- Frankfurt
- Berlin
- Munich
- Madrid
- Milan
Fares are recent prices found by travellers, cached for a few hours. Trip costs are planning estimates checked 2026-10-11. Always confirm the final price when you book. Some links are affiliate links; they never change your price.