Cheap flights from San Francisco to London Heathrow
San Francisco to London Heathrow (SFO → LHR). We are tracking 8 fares on this route.
Cheapest tracked fare $280 · typical price $429 · you save about $149 (35%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
JetBlue
2026-10-20
1 stop
$280
JetBlue
2027-03-02
1 stop
$299
Air Canada
2027-03-03
1 stop
$299
Air Canada
2027-01-05
1 stop
$308
JetBlue
2027-03-04
1 stop
$312
JetBlue
2026-12-10
1 stop
$313
JetBlue
2026-10-24
1 stop
$318
JetBlue
2026-11-11
1 stop
$339
Could you save more?
The airport you were going to fly from is often not the cheapest one. Compare every airport in a region against each other, or check whether a multi-day stopover beats the direct fare.
How cheap can flights from San Francisco to London Heathrow get?
The cheapest fare we have tracked on this route is $280, compared with a typical $429 for a trip of this distance.
Is it cheaper to fly to London Heathrow from a different airport?
Often, yes. Fares out of secondary airports are frequently cheaper than the obvious hub, but they are the ones most likely to be missing from a normal search. Our reverse search compares every airport in a region against each other so the cheaper departure point is not hidden.
Could a stopover make San Francisco to London Heathrow cheaper?
Sometimes. On thin long-haul routes a two-leg trip with a multi-day stopover can beat the direct fare, and occasionally a direct fare is not sold at all. Our detour search prices those routings against the direct flight.