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Saint Louis → San Juan

Dec 21, 2026 · return Jan 4, 2027

STL → SJU1 adulteconomyRound trip

6 flight options · 3 airlines

One-stop flights

Mon, Dec 21 – Mon, Jan 4

Southwest Airlines
2:55 pmSTL
6h 40m
BNA · 1h 30m
11:35 pmSJU
Southwest Airlines
1:20 pmSJU
9h 45m
MCO · 3h 50m
9:05 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 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

Mon, Dec 21 – Mon, Jan 4

Delta Air Lines
2:31 pmSTL
6h 39m
ATL · 1h 40m
11:10 pmSJU
Delta Air Lines
3:40 pmSJU
9h 46m
MSP · 2h 9m
11:26 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Southwest Airlines
3:55 pmSTL
7h
TPA · 1h 50m
12:55 am+1SJU
Southwest Airlines
1:20 pmSJU
9h 45m
MCO · 3h 50m
9:05 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Southwest Airlines
5:15 pmSTL
6h 25m
MCO · 1h 15m
1:40 am+1SJU
Southwest Airlines
1:20 pmSJU
9h 45m
MCO · 3h 50m
9:05 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

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

Make this trip yours

STL ⇄ SJU

Economy

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

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More dates

All dates for this routeNov 24, 2026 → Nov 29, 2026Dec 22, 2026 → Dec 27, 2026Dec 30, 2026 → Jan 2, 2027Jan 15, 2027 → Jan 18, 2027Oct 30, 2026 → Nov 2, 2026Oct 31, 2026 → Nov 7, 2026Nov 27, 2026 → Nov 30, 2026Nov 28, 2026 → Dec 5, 2026Dec 25, 2026 → Dec 28, 2026Dec 26, 2026 → Jan 2, 2027Jan 22, 2027 → Jan 25, 2027Oct 30, 2026 · One way
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.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-21 → 2027-01-04Southwest AirlinesWN459 + WN2898 / WN3950 + WN2874$609.002026-10-29T01:29:03Z
2026-12-21 → 2027-01-04American AirlinesAA2317 + AA2213 / AA3324 + AA2486$658.002026-10-29T01:29:03Z
2026-12-21 → 2027-01-04Delta Air LinesDL1102 + DL1861 / DL1925 + DL1609$700.002026-10-29T01:29:03Z
2026-12-21 → 2027-01-04Southwest AirlinesWN4205 + WN3430 / WN3950 + WN2874$609.002026-10-29T01:29:03Z
2026-12-21 → 2027-01-04Southwest AirlinesWN2030 + WN4663 / WN3950 + WN2874$609.002026-10-29T01:29:03Z
2026-12-21 → 2027-01-04Southwest AirlinesWN4122 / WN3950 + WN2874$647.502026-10-29T01:29:03Z

2026-12-21 → 2027-01-04 · $609.00

  • Southwest Airlines WN459 / WN2898: STL 2026-12-21 14:55:00 → SJU 2026-12-21 23:35:00; 1 stop(s) via BNA; 400 minutes. Local airport times.
    • WN459: STL 2026-12-21 14:55:00 → BNA 2026-12-21 16:05:00; layover at BNA: 90 minutes.
    • WN2898: BNA 2026-12-21 17:35:00 → SJU 2026-12-21 23:35:00.
  • Southwest Airlines WN3950 / WN2874: SJU 2027-01-04 13:20:00 → STL 2027-01-04 21:05:00; 1 stop(s) via MCO; 585 minutes. Local airport times.
    • WN3950: SJU 2027-01-04 13:20:00 → MCO 2027-01-04 15:35:00; layover at MCO: 230 minutes.
    • WN2874: MCO 2027-01-04 19:25:00 → STL 2027-01-04 21:05:00.

2026-12-21 → 2027-01-04 · $658.00

  • American Airlines AA2317 / AA2213: STL 2026-12-21 05:02:00 → SJU 2026-12-21 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-21 05:02:00 → ORD 2026-12-21 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-21 08:15:00 → SJU 2026-12-21 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2027-01-04 07:05:00 → STL 2027-01-04 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2027-01-04 07:05:00 → CLT 2027-01-04 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2027-01-04 12:20:00 → STL 2027-01-04 13:20:00.

2026-12-21 → 2027-01-04 · $700.00

  • Delta Air Lines DL1102 / DL1861: STL 2026-12-21 14:31:00 → SJU 2026-12-21 23:10:00; 1 stop(s) via ATL; 399 minutes. Local airport times.
    • DL1102: STL 2026-12-21 14:31:00 → ATL 2026-12-21 17:05:00; layover at ATL: 100 minutes.
    • DL1861: ATL 2026-12-21 18:45:00 → SJU 2026-12-21 23:10:00.
  • Delta Air Lines DL1925 / DL1609: SJU 2027-01-04 15:40:00 → STL 2027-01-04 23:26:00; 1 stop(s) via MSP; 586 minutes. Local airport times.
    • DL1925: SJU 2027-01-04 15:40:00 → MSP 2027-01-04 19:40:00; layover at MSP: 129 minutes.
    • DL1609: MSP 2027-01-04 21:49:00 → STL 2027-01-04 23:26:00.

2026-12-21 → 2027-01-04 · $609.00

  • Southwest Airlines WN4205 / WN3430: STL 2026-12-21 15:55:00 → SJU 2026-12-22 00:55:00; 1 stop(s) via TPA; 420 minutes. Local airport times.
    • WN4205: STL 2026-12-21 15:55:00 → TPA 2026-12-21 19:10:00; layover at TPA: 110 minutes.
    • WN3430: TPA 2026-12-21 21:00:00 → SJU 2026-12-22 00:55:00.
  • Southwest Airlines WN3950 / WN2874: SJU 2027-01-04 13:20:00 → STL 2027-01-04 21:05:00; 1 stop(s) via MCO; 585 minutes. Local airport times.
    • WN3950: SJU 2027-01-04 13:20:00 → MCO 2027-01-04 15:35:00; layover at MCO: 230 minutes.
    • WN2874: MCO 2027-01-04 19:25:00 → STL 2027-01-04 21:05:00.

2026-12-21 → 2027-01-04 · $609.00

  • Southwest Airlines WN2030 / WN4663: STL 2026-12-21 17:15:00 → SJU 2026-12-22 01:40:00; 1 stop(s) via MCO; 385 minutes. Local airport times.
    • WN2030: STL 2026-12-21 17:15:00 → MCO 2026-12-21 20:30:00; layover at MCO: 75 minutes.
    • WN4663: MCO 2026-12-21 21:45:00 → SJU 2026-12-22 01:40:00.
  • Southwest Airlines WN3950 / WN2874: SJU 2027-01-04 13:20:00 → STL 2027-01-04 21:05:00; 1 stop(s) via MCO; 585 minutes. Local airport times.
    • WN3950: SJU 2027-01-04 13:20:00 → MCO 2027-01-04 15:35:00; layover at MCO: 230 minutes.
    • WN2874: MCO 2027-01-04 19:25:00 → STL 2027-01-04 21:05:00.

2026-12-21 → 2027-01-04 · $647.50

  • Southwest Airlines WN4122: STL 2026-12-21 12:05:00 → SJU 2026-12-21 18:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN3950 / WN2874: SJU 2027-01-04 13:20:00 → STL 2027-01-04 21:05:00; 1 stop(s) via MCO; 585 minutes. Local airport times.
    • WN3950: SJU 2027-01-04 13:20:00 → MCO 2027-01-04 15:35:00; layover at MCO: 230 minutes.
    • WN2874: MCO 2027-01-04 19:25:00 → STL 2027-01-04 21:05:00.

More dates for this route