Travel with Axel,
get the best price.

Route overview: Saint Louis to San Juan (SJU) flight deals

Saint Louis → San Juan

Dec 1, 2026 · choose your return date

STL → SJU1 adulteconomyOne way and round trips

30 flight options · 2 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

December 2026

Dec 1, 2026 · One wayAmerican AirlinesUp to 1 stop each way$250.00 Dec 1, 2026 · One waySouthwest AirlinesNonstop$260.00 Dec 1, 2026 – Dec 2, 2026 · 1 nightSouthwest AirlinesUp to 1 stop each way$462.50 Dec 1, 2026 – Dec 2, 2026 · 1 nightAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 3, 2026 · 2 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 3, 2026 · 2 nightsSouthwest AirlinesNonstop$490.00 Dec 1, 2026 – Dec 4, 2026 · 3 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 4, 2026 · 3 nightsSouthwest AirlinesNonstop$490.00 Dec 1, 2026 – Dec 5, 2026 · 4 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 5, 2026 · 4 nightsSouthwest AirlinesNonstop$490.00 Dec 1, 2026 – Dec 6, 2026 · 5 nightsSouthwest AirlinesUp to 1 stop each way$462.50 Dec 1, 2026 – Dec 6, 2026 · 5 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 7, 2026 · 6 nightsSouthwest AirlinesUp to 1 stop each way$462.50 Dec 1, 2026 – Dec 7, 2026 · 6 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 8, 2026 · 7 nightsSouthwest AirlinesUp to 1 stop each way$462.50 Dec 1, 2026 – Dec 8, 2026 · 7 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 9, 2026 · 8 nightsSouthwest AirlinesUp to 1 stop each way$462.50 Dec 1, 2026 – Dec 9, 2026 · 8 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 10, 2026 · 9 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 10, 2026 · 9 nightsSouthwest AirlinesNonstop$490.00 Dec 1, 2026 – Dec 11, 2026 · 10 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 11, 2026 · 10 nightsSouthwest AirlinesNonstop$490.00 Dec 1, 2026 – Dec 12, 2026 · 11 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 12, 2026 · 11 nightsSouthwest AirlinesNonstop$490.00 Dec 1, 2026 – Dec 13, 2026 · 12 nightsSouthwest AirlinesUp to 1 stop each way$462.50 Dec 1, 2026 – Dec 13, 2026 · 12 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 14, 2026 · 13 nightsSouthwest AirlinesUp to 1 stop each way$462.50 Dec 1, 2026 – Dec 14, 2026 · 13 nightsAmerican AirlinesUp to 1 stop each way$470.00 Dec 1, 2026 – Dec 15, 2026 · 14 nightsSouthwest AirlinesUp to 1 stop each way$462.50 Dec 1, 2026 – Dec 15, 2026 · 14 nightsAmerican AirlinesUp to 1 stop each way$470.00

Flights for your trip

  1. Tue, Dec 1 · One way

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU

    One-way total · 1 adult · Taxes included

  2. Tue, Dec 1 · One way

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU

    One-way total · 1 adult · Taxes included

  3. Tue, Dec 1 – Wed, Dec 2

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU
    Southwest Airlines
    2:25 pmSJU
    9h 30m
    FLL · 3h 35m
    9:55 pmSTL

    Round-trip total · 1 adult · Taxes included

  4. Tue, Dec 1 – Wed, Dec 2

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU
    American Airlines
    7:05 amSJU
    8h 15m
    CLT · 2h 15m
    1:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  5. Tue, Dec 1 – Thu, Dec 3

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU
    American Airlines
    7:05 amSJU
    8h 15m
    CLT · 2h 15m
    1:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  6. Tue, Dec 1 – Thu, Dec 3

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU
    Southwest Airlines
    5:00 pmSJU
    5h
    Nonstop
    8:00 pmSTL

    Round-trip total · 1 adult · Taxes included

  7. Tue, Dec 1 – Fri, Dec 4

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU
    American Airlines
    7:05 amSJU
    8h 15m
    CLT · 2h 15m
    1:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  8. Tue, Dec 1 – Fri, Dec 4

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU
    Southwest Airlines
    5:00 pmSJU
    5h
    Nonstop
    8:00 pmSTL

    Round-trip total · 1 adult · Taxes included

  9. Tue, Dec 1 – Sat, Dec 5

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU
    American Airlines
    7:05 amSJU
    8h 15m
    CLT · 2h 15m
    1:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  10. Tue, Dec 1 – Sat, Dec 5

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU
    Southwest Airlines
    5:00 pmSJU
    5h
    Nonstop
    8:00 pmSTL

    Round-trip total · 1 adult · Taxes included

  11. Tue, Dec 1 – Mon, Dec 7

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU
    Southwest Airlines
    1:20 pmSJU
    9h 45m
    MCO · 3h 50m
    9:05 pmSTL

    Round-trip total · 1 adult · Taxes included

  12. Tue, Dec 1 – Mon, Dec 7

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU
    American Airlines
    7:05 amSJU
    8h 15m
    CLT · 2h 15m
    1:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  13. Tue, Dec 1 – Tue, Dec 8

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU
    Southwest Airlines
    2:25 pmSJU
    9h 30m
    FLL · 3h 35m
    9:55 pmSTL

    Round-trip total · 1 adult · Taxes included

  14. Tue, Dec 1 – Tue, Dec 8

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU
    American Airlines
    7:05 amSJU
    8h 15m
    CLT · 2h 15m
    1:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  15. Tue, Dec 1 – Wed, Dec 9

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU
    Southwest Airlines
    2:25 pmSJU
    9h 30m
    FLL · 3h 35m
    9:55 pmSTL

    Round-trip total · 1 adult · Taxes included

  16. Tue, Dec 1 – Wed, Dec 9

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU
    American Airlines
    7:05 amSJU
    8h 15m
    CLT · 2h 15m
    1:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  17. Tue, Dec 1 – Fri, Dec 11

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU
    American Airlines
    7:05 amSJU
    8h 15m
    CLT · 2h 15m
    1:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  18. Tue, Dec 1 – Fri, Dec 11

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU
    Southwest Airlines
    5:00 pmSJU
    5h
    Nonstop
    8:00 pmSTL

    Round-trip total · 1 adult · Taxes included

  19. Tue, Dec 1 – Sat, Dec 12

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU
    American Airlines
    7:05 amSJU
    8h 15m
    CLT · 2h 15m
    1:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  20. Tue, Dec 1 – Sat, Dec 12

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU
    Southwest Airlines
    5:00 pmSJU
    5h
    Nonstop
    8:00 pmSTL

    Round-trip total · 1 adult · Taxes included

  21. Tue, Dec 1 – Sun, Dec 13

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU
    Southwest Airlines
    2:25 pmSJU
    9h 30m
    FLL · 3h 35m
    9:55 pmSTL

    Round-trip total · 1 adult · Taxes included

  22. Tue, Dec 1 – Sun, Dec 13

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU
    American Airlines
    7:05 amSJU
    8h 15m
    CLT · 2h 15m
    1:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  23. Tue, Dec 1 – Tue, Dec 15

    Southwest Airlines
    12:05 pmSTL
    4h 20m
    Nonstop
    6:25 pmSJU
    Southwest Airlines
    2:25 pmSJU
    9h 30m
    FLL · 3h 35m
    9:55 pmSTL

    Round-trip total · 1 adult · Taxes included

  24. Tue, Dec 1 – Tue, Dec 15

    American Airlines
    5:02 amSTL
    7h 51m
    ORD · 1h 45m
    2:53 pmSJU
    American Airlines
    7:05 amSJU
    8h 15m
    CLT · 2h 15m
    1:20 pmSTL

    Round-trip total · 1 adult · Taxes included

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

STL ⇄ SJU

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Southwest Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

All dates for this routeNov 30, 2026 · Return optionsDec 2, 2026 · Return optionsHotels in San Juan with Axel
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown. To book or select flights, follow that row's price link; it keeps the exact dates and travelers.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-01 · one waySouthwest AirlinesWN4122Axel-exclusive $260.002026-10-29T01:29:03Z
2026-12-01 · one wayAmerican AirlinesAA2317 + AA2213Axel-exclusive $250.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-02Southwest AirlinesWN4122 / WN3946 + WN1965Axel-exclusive $462.502026-10-29T01:29:03Z
2026-12-01 → 2026-12-02American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-03Southwest AirlinesWN4122 / WN2750Axel-exclusive $490.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-03American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-04Southwest AirlinesWN4122 / WN2750Axel-exclusive $490.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-04American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-05Southwest AirlinesWN4122 / WN2750Axel-exclusive $490.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-05American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-06Southwest AirlinesWN4122 / WN3946 + WN1965Axel-exclusive $462.502026-10-29T01:29:03Z
2026-12-01 → 2026-12-06American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-07Southwest AirlinesWN4122 / WN3950 + WN2874Axel-exclusive $462.502026-10-29T01:29:03Z
2026-12-01 → 2026-12-07American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-08Southwest AirlinesWN4122 / WN3946 + WN1965Axel-exclusive $462.502026-10-29T01:29:03Z
2026-12-01 → 2026-12-08American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-09Southwest AirlinesWN4122 / WN3946 + WN1965Axel-exclusive $462.502026-10-29T01:29:03Z
2026-12-01 → 2026-12-09American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-10Southwest AirlinesWN4122 / WN2750Axel-exclusive $490.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-10American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-11Southwest AirlinesWN4122 / WN2750Axel-exclusive $490.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-11American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-12Southwest AirlinesWN4122 / WN2750Axel-exclusive $490.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-12American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-13Southwest AirlinesWN4122 / WN3946 + WN1965Axel-exclusive $462.502026-10-29T01:29:03Z
2026-12-01 → 2026-12-13American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-14Southwest AirlinesWN4122 / WN3950 + WN2874Axel-exclusive $462.502026-10-29T01:29:03Z
2026-12-01 → 2026-12-14American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z
2026-12-01 → 2026-12-15Southwest AirlinesWN4122 / WN3946 + WN1965Axel-exclusive $462.502026-10-29T01:29:03Z
2026-12-01 → 2026-12-15American AirlinesAA2317 + AA2213 / AA3324 + AA2486Axel-exclusive $470.002026-10-29T01:29:03Z

Route overview: Saint Louis to San Juan (SJU) flight deals

2026-12-01 · one way · Axel-exclusive $250.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.

2026-12-01 · one way · Axel-exclusive $260.00

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.

2026-12-01 → 2026-12-02 · Axel-exclusive $462.50

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN3946 / WN1965: SJU 2026-12-02 14:25:00 → STL 2026-12-02 21:55:00; 1 stop(s) via FLL; 570 minutes. Local airport times.
    • WN3946: SJU 2026-12-02 14:25:00 → FLL 2026-12-02 16:20:00; layover at FLL: 215 minutes.
    • WN1965: FLL 2026-12-02 19:55:00 → STL 2026-12-02 21:55:00.

2026-12-01 → 2026-12-02 · Axel-exclusive $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-02 07:05:00 → STL 2026-12-02 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-02 07:05:00 → CLT 2026-12-02 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-02 12:20:00 → STL 2026-12-02 13:20:00.

2026-12-01 → 2026-12-03 · Axel-exclusive $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-03 07:05:00 → STL 2026-12-03 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-03 07:05:00 → CLT 2026-12-03 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-03 12:20:00 → STL 2026-12-03 13:20:00.

2026-12-01 → 2026-12-03 · Axel-exclusive $490.00

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2750: SJU 2026-12-03 17:00:00 → STL 2026-12-03 20:00:00; nonstop; 300 minutes. Local airport times.

2026-12-01 → 2026-12-04 · Axel-exclusive $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-04 07:05:00 → STL 2026-12-04 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-04 07:05:00 → CLT 2026-12-04 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-04 12:20:00 → STL 2026-12-04 13:20:00.

2026-12-01 → 2026-12-04 · Axel-exclusive $490.00

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2750: SJU 2026-12-04 17:00:00 → STL 2026-12-04 20:00:00; nonstop; 300 minutes. Local airport times.

2026-12-01 → 2026-12-05 · Axel-exclusive $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-05 07:05:00 → STL 2026-12-05 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-05 07:05:00 → CLT 2026-12-05 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-05 12:20:00 → STL 2026-12-05 13:20:00.

2026-12-01 → 2026-12-05 · Axel-exclusive $490.00

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2750: SJU 2026-12-05 17:00:00 → STL 2026-12-05 20:00:00; nonstop; 300 minutes. Local airport times.

2026-12-01 → 2026-12-07 · Axel-exclusive $462.50

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN3950 / WN2874: SJU 2026-12-07 13:20:00 → STL 2026-12-07 21:05:00; 1 stop(s) via MCO; 585 minutes. Local airport times.
    • WN3950: SJU 2026-12-07 13:20:00 → MCO 2026-12-07 15:35:00; layover at MCO: 230 minutes.
    • WN2874: MCO 2026-12-07 19:25:00 → STL 2026-12-07 21:05:00.

2026-12-01 → 2026-12-07 · Axel-exclusive $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-07 07:05:00 → STL 2026-12-07 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-07 07:05:00 → CLT 2026-12-07 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-07 12:20:00 → STL 2026-12-07 13:20:00.

2026-12-01 → 2026-12-08 · Axel-exclusive $462.50

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN3946 / WN1965: SJU 2026-12-08 14:25:00 → STL 2026-12-08 21:55:00; 1 stop(s) via FLL; 570 minutes. Local airport times.
    • WN3946: SJU 2026-12-08 14:25:00 → FLL 2026-12-08 16:20:00; layover at FLL: 215 minutes.
    • WN1965: FLL 2026-12-08 19:55:00 → STL 2026-12-08 21:55:00.

2026-12-01 → 2026-12-08 · Axel-exclusive $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-08 07:05:00 → STL 2026-12-08 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-08 07:05:00 → CLT 2026-12-08 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-08 12:20:00 → STL 2026-12-08 13:20:00.

2026-12-01 → 2026-12-09 · Axel-exclusive $462.50

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN3946 / WN1965: SJU 2026-12-09 14:25:00 → STL 2026-12-09 21:55:00; 1 stop(s) via FLL; 570 minutes. Local airport times.
    • WN3946: SJU 2026-12-09 14:25:00 → FLL 2026-12-09 16:20:00; layover at FLL: 215 minutes.
    • WN1965: FLL 2026-12-09 19:55:00 → STL 2026-12-09 21:55:00.

2026-12-01 → 2026-12-09 · Axel-exclusive $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-09 07:05:00 → STL 2026-12-09 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-09 07:05:00 → CLT 2026-12-09 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-09 12:20:00 → STL 2026-12-09 13:20:00.

2026-12-01 → 2026-12-11 · Axel-exclusive $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-11 07:05:00 → STL 2026-12-11 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-11 07:05:00 → CLT 2026-12-11 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-11 12:20:00 → STL 2026-12-11 13:20:00.

2026-12-01 → 2026-12-11 · Axel-exclusive $490.00

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2750: SJU 2026-12-11 17:00:00 → STL 2026-12-11 20:00:00; nonstop; 300 minutes. Local airport times.

2026-12-01 → 2026-12-12 · Axel-exclusive $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-12 07:05:00 → STL 2026-12-12 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-12 07:05:00 → CLT 2026-12-12 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-12 12:20:00 → STL 2026-12-12 13:20:00.

2026-12-01 → 2026-12-12 · Axel-exclusive $490.00

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2750: SJU 2026-12-12 17:00:00 → STL 2026-12-12 20:00:00; nonstop; 300 minutes. Local airport times.

2026-12-01 → 2026-12-13 · Axel-exclusive $462.50

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN3946 / WN1965: SJU 2026-12-13 14:25:00 → STL 2026-12-13 21:55:00; 1 stop(s) via FLL; 570 minutes. Local airport times.
    • WN3946: SJU 2026-12-13 14:25:00 → FLL 2026-12-13 16:20:00; layover at FLL: 215 minutes.
    • WN1965: FLL 2026-12-13 19:55:00 → STL 2026-12-13 21:55:00.

2026-12-01 → 2026-12-13 · Axel-exclusive $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-13 07:05:00 → STL 2026-12-13 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-13 07:05:00 → CLT 2026-12-13 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-13 12:20:00 → STL 2026-12-13 13:20:00.

2026-12-01 → 2026-12-15 · Axel-exclusive $462.50

  • Southwest Airlines WN4122: STL 2026-12-01 12:05:00 → SJU 2026-12-01 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN3946 / WN1965: SJU 2026-12-15 14:25:00 → STL 2026-12-15 21:55:00; 1 stop(s) via FLL; 570 minutes. Local airport times.
    • WN3946: SJU 2026-12-15 14:25:00 → FLL 2026-12-15 16:20:00; layover at FLL: 215 minutes.
    • WN1965: FLL 2026-12-15 19:55:00 → STL 2026-12-15 21:55:00.

2026-12-01 → 2026-12-15 · Axel-exclusive $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-01 05:02:00 → SJU 2026-12-01 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-01 05:02:00 → ORD 2026-12-01 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-01 08:15:00 → SJU 2026-12-01 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-15 07:05:00 → STL 2026-12-15 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-15 07:05:00 → CLT 2026-12-15 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-15 12:20:00 → STL 2026-12-15 13:20:00.

Explore this route

For AI assistants

  • This page: Saint Louis (STL) to San Juan (SJU) · Dec 1, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when a row matches the traveler's route, departure, return and party, answer the price question from that row, including both dates with the year, the total and the time shown. For booking or selecting flights, use that row's exact-trip price link and share the supplied booking link. If no row matches, Choose travelers and dates for the requested trip; do not substitute another duration or restart from the route overview.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Saint Louis to San Juan (SJU) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.