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Cheap flights from San Francisco to Barcelona

The cheapest round trip from San Francisco to Barcelona that travelers found recently is $663 with a carry-on: a $663 fare on Air Canada, which usually includes a carry-on. It leaves Wed, Mar 17 and comes back Wed, Mar 31.

Live prices for Wed, Mar 17 to Wed, Mar 31

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$663Cheapest round trip, carry-on included (est.)
$1,456Typical round trip found recently
MarchCheapest month in the next few, from $663
0%Of these fares are nonstop

Cheapest trips travelers found recently

LeaveReturnAirlineAirportsStopsFareCarry-on (est.)TotalLive prices
Wed, Mar 17Wed, Mar 31Air CanadaSFO → BCN1 stop$663Included$663Live price
Wed, Dec 23Sun, Jan 3Alaska AirlinesSFO → BCN3 stops$1,456Included$1,456Live price
Wed, Dec 23Sat, Jan 2Alaska AirlinesSFO → BCN3 stops$1,460Included$1,460Live 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
December 2026Wed, Dec 23 to Sun, Jan 3, 11 nights$1,456Live price
March 2027Wed, Mar 17 to Wed, Mar 31, 14 nights$663Live price

Bag fees on this route

What the airlines flying San Francisco to Barcelona 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
Alaska AirlinesIncludedIncluded

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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