Flights from Philadelphia to San Juan from $ 397*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Philadelphia (PHL) to San Juan (SJU)

May 2026
From$ 488*
Viewed: 7 hours ago
RoundTrip|Economy
Jun 2026
From$ 397*
Viewed: 7 hours ago
RoundTrip|Economy
Jul 2026
From$ 439*
Viewed: 7 hours ago
RoundTrip|Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $ 397
cmp-daily-histogram-bars-legend-max-price-aria-label $ 589
Displaying fares for May-2026
  • 16

    Sa

    MAY

  • 17

    Su

  • 18

    Mo

  • 19

    Tu

  • 20

    We

  • 21

    Th

  • 22

    Fr

  • 23

    Sa

  • 24

    Su

  • 25

    Mo

  • 26

    Tu

  • 27

    We

  • 28

    Th

  • 29

    Fr

  • 30

    Sa

  • 31

    Su

  • 01

    Mo

    JUN

  • 02

    Tu

  • 03

    We

  • 04

    Th

  • 05

    Fr

  • 06

    Sa

  • 07

    Su

  • 08

    Mo

  • 09

    Tu

  • 10

    We

  • 11

    Th

  • 12

    Fr

  • 13

    Sa

  • 14

    Su

  • 15

    Mo

    • Range$ 397-$ 589

    *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

    More United deals on Philadelphia (PHL) to San Juan (SJU) flights

    $
    keyboard_arrow_down
    More United deals on Philadelphia (PHL) to San Juan (SJU) flights
    From
    To
    Fare Type
    Dates
    Price
    Philadelphia (PHL)San Juan (SJU)Roundtrip
    |
    Economy    		07/13/26 - 07/22/26

    from

    $ 439

    Viewed: 1 day ago

    Philadelphia (PHL)San Juan (SJU)Roundtrip
    |
    Economy    		06/10/26 - 06/24/26

    from

    $ 397

    Viewed: 7 hours ago

    Philadelphia (PHL)San Juan (SJU)Roundtrip
    |
    Economy    		09/24/26 - 09/28/26

    from

    $ 397

    Viewed: 21 hours ago

    Philadelphia (PHL)San Juan (SJU)Roundtrip
    |
    Economy    		09/18/26 - 09/22/26

    from

    $ 409

    Viewed: 1 day ago

    Philadelphia (PHL)San Juan (SJU)Roundtrip
    |
    Economy    		06/09/26 - 06/23/26

    from

    $ 409

    Viewed: 7 hours ago

    Philadelphia (PHL)San Juan (SJU)Roundtrip
    |
    Economy    		06/17/26 - 06/24/26

    from

    $ 427

    Viewed: 7 hours ago

    Philadelphia (PHL)San Juan (SJU)Roundtrip
    |
    Economy    		07/18/26 - 07/22/26

    from

    $ 439

    Viewed: 7 hours ago

    Philadelphia (PHL)San Juan (SJU)Roundtrip
    |
    Economy    		06/16/26 - 06/23/26

    from

    $ 439

    Viewed: 7 hours ago

    *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

    Explore United Airlines's Top-Pick Destinations

    Explore more United flights