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Cheap flights from San Francisco to San Juan

The cheapest round trip from San Francisco to San Juan that travelers found recently is $348 with a carry-on: a $348 fare on JetBlue, which usually includes a carry-on. It leaves Sun, Jan 10 and comes back Sun, Jan 17.

Live prices for Sun, Jan 10 to Sun, Jan 17

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$348Cheapest round trip, carry-on included (est.)
$607Typical round trip found recently
JanuaryCheapest month in the next few, from $348
0%Of these fares are nonstop

Cheapest trips travelers found recently

LeaveReturnAirlineAirportsStopsFareCarry-on (est.)TotalLive prices
Sun, Jan 10Sun, Jan 17JetBlueSFO → SJU1 stop$348Included$348Live price
Sat, Nov 21Fri, Nov 27SouthwestSJC → SJU2 stops$607Included$607Live 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
November 2026Sat, Nov 21 to Fri, Nov 27, 6 nights$607Live price
January 2027Sun, Jan 10 to Sun, Jan 17, 7 nights$348Live price

Bag fees on this route

What the airlines flying San Francisco to San Juan 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
JetBlueIncluded$40
SouthwestIncluded$35

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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