Search trips

Cheap flights from Philadelphia to San Juan

The cheapest round trip from Philadelphia to San Juan that travelers found recently is $192 with a carry-on: a $192 fare on Southwest, which usually includes a carry-on. It leaves Thu, Oct 15 and comes back Fri, Oct 16.

Live prices for Thu, Oct 15 to Fri, Oct 16

Get a price alert

We'll email you when a round trip from Philadelphia to San Juan, with a carry-on, drops to your price or less.

We'll send a link to confirm first. Every email has a link to stop it. Privacy

$192Cheapest round trip, carry-on included (est.)
$380Typical round trip found recently
OctoberCheapest month in the next few, from $192
45%Of these fares are nonstop

Cheapest trips travelers found recently

LeaveReturnAirlineAirportsStopsFareCarry-on (est.)TotalLive prices
Thu, Oct 15Fri, Oct 16SouthwestPHL → SJU1 stop$192Included$192Live price
Sat, Oct 24Thu, Oct 29FrontierPHL → SJUNonstop$155+$110$265Live price
Sat, Dec 12Sat, Dec 19FrontierPHL → SJU1 stop$156+$110$266Live price
Fri, May 7Sat, May 15American AirlinesPHL → SJU1 stop$271Included$271Live price
Thu, Dec 10Sun, Dec 13American AirlinesPHL → SJU1 stop$293Included$293Live price
Thu, Nov 5Thu, Nov 12FrontierPHL → SJUNonstop$201+$110$311Live price
Fri, Dec 11Fri, Dec 18FrontierPHL → SJU1 stop$204+$110$314Live price
Mon, Feb 8Sat, Feb 13FrontierPHL → SJUNonstop$204+$110$314Live price
Fri, Nov 13Sun, Nov 15FrontierPHL → SJUNonstop$251+$110$361Live price
Sat, Oct 31Sat, Nov 7FrontierPHL → SJU1 stop$259+$110$369Live 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 2026Thu, Oct 15 to Fri, Oct 16, 1 night$192Live price
November 2026Thu, Nov 5 to Thu, Nov 12, 7 nights$311Live price
December 2026Sat, Dec 12 to Sat, Dec 19, 7 nights$266Live price
January 2027Fri, Jan 15 to Tue, Jan 19, 4 nights$421Live price
February 2027Mon, Feb 8 to Sat, Feb 13, 5 nights$314Live price
May 2027Fri, May 7 to Sat, May 15, 8 nights$271Live price

Bag fees on this route

What the airlines flying Philadelphia 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
American AirlinesIncluded$40
Frontier$55$50
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).

Not sure where to go? Tell Dipt your budget and vibe and it finds the trip.

More cheap flights from Philadelphia

Cheap flights to San Juan from other cities