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Cheap flights from San Francisco to Lisbon

The cheapest round trip from San Francisco to Lisbon that travelers found recently is $926 with a carry-on: a $926 fare on SAS, which usually includes a carry-on. It leaves Fri, Oct 16 and comes back Mon, Oct 26.

Live prices for Fri, Oct 16 to Mon, Oct 26

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$926Cheapest round trip, carry-on included (est.)
$1,291Typical round trip found recently
OctoberCheapest month in the next few, from $926
0%Of these fares are nonstop

Cheapest trips travelers found recently

LeaveReturnAirlineAirportsStopsFareCarry-on (est.)TotalLive prices
Fri, Oct 16Mon, Oct 26SASSFO → LIS1 stop$926Included$926Live price
Fri, Oct 16Sat, Oct 24UnitedSFO → LIS1 stop$1,086Included$1,086Live price
Mon, Dec 21Sun, Dec 27SwissSFO → LIS1 stop$1,291Included$1,291Live price
Sat, Dec 19Sat, Jan 2Alaska AirlinesSFO → LIS3 stops$1,789Included$1,789Live 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 16 to Mon, Oct 26, 10 nights$926Live price
December 2026Mon, Dec 21 to Sun, Dec 27, 6 nights$1,291Live price

Bag fees on this route

What the airlines flying San Francisco to Lisbon 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
Alaska AirlinesIncludedIncluded
SASIncludedIncluded
SwissIncludedIncluded
UnitedIncludedIncluded

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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