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Cheap flights from San Francisco to London

The cheapest round trip from San Francisco to London that travelers found recently is $549 with a carry-on: a $549 fare on SAS, which usually includes a carry-on. It leaves Fri, Oct 30 and comes back Sun, Nov 1.

Live prices for Fri, Oct 30 to Sun, Nov 1

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$549Cheapest round trip, carry-on included (est.)
$690Typical round trip found recently
OctoberCheapest month in the next few, from $549
0%Of these fares are nonstop

Cheapest trips travelers found recently

LeaveReturnAirlineAirportsStopsFareCarry-on (est.)TotalLive prices
Fri, Oct 30Sun, Nov 1SASSFO → LHR1 stop$549Included$549Live price
Mon, Oct 26Wed, Oct 28TAP Air PortugalSFO → LHR1 stop$598Included$598Live price
Tue, Dec 1Tue, Dec 8SASSFO → LHR1 stop$647Included$647Live price
Mon, Oct 19Sun, Nov 1TAP Air PortugalSFO → LHR1 stop$669Included$669Live price
Fri, Nov 13Fri, Nov 20TAP Air PortugalSFO → LHR1 stop$671Included$671Live price
Wed, Dec 2Tue, Dec 8TAP Air PortugalSFO → LHR1 stop$690Included$690Live price
Thu, Oct 29Fri, Oct 30SASSFO → LHR1 stop$722Included$722Live price
Wed, Oct 28Tue, Nov 3TAP Air PortugalSFO → LHR1 stop$750Included$750Live price
Sat, Oct 24Tue, Oct 27SASSFO → LHR1 stop$879Included$879Live price
Mon, Oct 19Mon, Oct 26SASSFO → LHR1 stop$929Included$929Live price

Round-trip prices per person, from real fares travelers found in the last few days. Carry-on fees are our estimate for each airline, both ways. Prices change fast: check the live price before you book.

Cheapest month to fly

MonthCheapest tripFromLive prices
October 2026Fri, Oct 30 to Sun, Nov 1, 2 nights$549Live price
November 2026Fri, Nov 13 to Fri, Nov 20, 7 nights$671Live price
December 2026Tue, Dec 1 to Tue, Dec 8, 7 nights$647Live price

Bag fees on this route

What the airlines flying San Francisco to London usually charge for one bag each way. Budget airlines often sell the cheapest fares and charge the most for bags, so compare the total, not the fare.

AirlineCarry-on, each wayChecked bag, each way
Air CanadaIncludedIncluded
SASIncludedIncluded
TAP Air PortugalIncludedIncluded

Our estimates: fees depend on the fare type and when you pay. Check the airline's own price when you book.

How these prices work

These are real round-trip fares that travelers found on Aviasales recently, not a live search, so they can change or sell out. Dipt adds an estimate of each airline's carry-on fee, so a cheap fare with expensive bags doesn't look cheaper than it is. "Live price" opens Dipt's live flight search for those dates, where you book with the airline or travel site you pick. Dipt may earn a commission when you book, at no extra cost to you (how Dipt makes money).

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