Cheap flights from San Francisco to London

One-way fares from $241 · SFO → LON · prices found by travellers in the last 48 hours

Compare all dates London → San Francisco
Cheapest fare
$241

TAP Air Portugal · Mon, Nov 30

Cheapest month
November

from $241

Direct flights
Not recently

Usually 1+ stop

Quickest trip
12h 16m

8,620 km

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Cheapest month to fly from San Francisco to London

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $241
  2. December 2026 $295

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

TAP Air Portugal
Depart16:35 Mon, Nov 30SFO → STN 15h 55m · 2 stops
$241one way, per person
View deal
TAP Air Portugal
Depart16:35 Wed, Nov 25SFO → STN 15h 30m · 2 stops
$257one way, per person
View deal
jetBlue
Depart07:30 Tue, Nov 17SFO → LHR 12h 20m · 1 stop
$292one way, per person
View deal
TAP Air Portugal
Depart16:35 Wed, Nov 11SFO → LTN 15h 00m · 2 stops
$302one way, per person
View deal
jetBlue
Depart06:00 Mon, Nov 16SFO → LHR 12h 55m · 1 stop
$303one way, per person
View deal
jetBlue
Depart15:25 Mon, Nov 23SFO → LHR 12h 44m · 1 stop
$305one way, per person
View deal
jetBlue
Depart06:00 Thu, Nov 26SFO → LHR 12h 16m · 1 stop
$309one way, per person
View deal
jetBlue
Depart16:25 Thu, Nov 5SFO → LHR 12h 41m · 1 stop
$428one way, per person
View deal
See every date in November 2026 →

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About flights from San Francisco to London

San Francisco (SFO) and London (LON) are about 8,620 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 12h 16m. Over the next few months, one-way fares start from $241, and November 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from San Francisco to London?

The cheapest one-way fare we've seen recently is $241 with TAP Air Portugal, departing Monday, November 30, 2026. Over the coming months, the lowest fare in each month ranges from $241 to $295.

What is the cheapest month to fly from San Francisco to London?

November 2026 currently has the lowest fares, from $241 one way.

Are there direct flights from San Francisco to London?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from San Francisco to London?

The quickest journey we've seen takes about 12h 16m. San Francisco and London are around 8,620 km apart.

Which airlines fly from San Francisco to London?

Recent fares on this route were with TAP Air Portugal and jetBlue.

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