Philadelphia to San Juan flights
The cheapest round trip we found from Philadelphia to San Juan is $143 (Dec 8 – 12, 1 stop), 22% below the usual $184.
PHL to SJU · Round trip · Economy · Prices per person in USD · Price found (4 hours ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $155 |
| December 2026 | $143 (cheapest month) |
| January 2027 | $184 |
| February 2027 | $146 |
| March 2027 | $238 |
| April 2027 | $366 |
| May 2027 | $369 |
Cheapest dates in the next 4 months
Round trip, per person-
Dec 8 – 12 4 nights · leave Tue$143 −22% vs usual$143 −22% vs usual Book
Frontier Airlines 1 stop · 5h 42m -
Feb 8 – 13, 2027 5 nights · leave Mon$146 −21% vs usual$146 −21% vs usual Book
Frontier Airlines Nonstop · 3h 57m
-
Nov 22 – Dec 1 9 nights · leave Sun$155 −16% vs usual$155 −16% vs usual Book
Frontier Airlines 1 stop · 4h 59m
-
Jan 20 – 25, 2027 5 nights · leave Wed$184$184 Book
Frontier Airlines 1 stop · 5h 56m
-
Jan 15 – 26, 2027 11 nights · leave Fri$195 +6% vs usual$195 +6% vs usual Book
Frontier Airlines 1 stop · 5h 37m
-
Jan 21 – 24, 2027 3 nights · leave Thu$204 +11% vs usual$204 +11% vs usual Book
American Airlines 1 stop · 5h 39m -
Nov 22 – 30 8 nights · leave Sun$285 +55% vs usual$285 +55% vs usual Book
Frontier Airlines 1 stop · 4h 56m
-
Nov 26 – 29 3 nights · leave Thu$308 +67% vs usual$308 +67% vs usual Book
Frontier Airlines Nonstop · 3h 48m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Plan the rest of your trip
San Juan · Dec 8 – 12- Car rental Economybookings · compare rental companies (opens Economybookings in a new tab)
- Things to do in San Juan Klook · tours and tickets (opens Klook in a new tab)
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Good to know
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Philadelphia to San Juan: questions
How much does a flight from Philadelphia to San Juan cost?
The cheapest round trip we have found right now is $143, leaving December 8 and returning December 12. The usual price on this route is about $184, so this fare is 22% less. Prices are per person, economy, in USD.
What is the cheapest month to fly from Philadelphia to San Juan?
December 2026, with round trips from $143. The most expensive month in our data is May (from $369). Based on the 7 months ahead we have prices for.
Are there nonstop flights from Philadelphia to San Juan?
Yes. Nonstop from $146 round trip. 37% of the 19 date combinations we track are nonstop.
Which airports do Philadelphia to San Juan flights use?
Philadelphia airports include Philadelphia International (PHL) and Trenton-Mercer (TTN). San Juan airports include Luis Munoz Marin International (SJU) and Isla Grande (SIG). The prices on this page cover every airport in both cities (PHL and SJU are the city codes).
About this route
We track round-trip economy fares from Philadelphia (United States) to San Juan (Puerto Rico) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $143, departing December 8 and returning December 12, about 22% below the usual $184. Right now we're following 19 upcoming date combinations on this route. The cheapest month to fly in our data is December, from $143. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.