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

Saint Louis → San Juan

Dec 13, 2026 · return Dec 16, 2026

STL → SJU1 adulteconomyRound trip

6 flight options · 3 airlines

One-stop flights

Sun, Dec 13 – Wed, Dec 16

Southwest Airlines
2:55 pmSTL
6h 40m
BNA · 1h 30m
11:35 pmSJU
Southwest Airlines
2:25 pmSJU
9h 30m
FLL · 3h 35m
9:55 pmSTL

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 16

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

Sun, Dec 13 – Wed, Dec 16

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

Sun, Dec 13 – Wed, Dec 16

Southwest Airlines
5:15 pmSTL
6h 25m
MCO · 1h 15m
1:40 am+1SJU
Southwest Airlines
2:25 pmSJU
9h 30m
FLL · 3h 35m
9:55 pmSTL

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 16

Southwest Airlines
3:55 pmSTL
7h
TPA · 1h 50m
12:55 am+1SJU
Southwest Airlines
2:25 pmSJU
9h 30m
FLL · 3h 35m
9:55 pmSTL

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 16

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

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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Explore this route

All dates for this routeDec 12, 2026 → Dec 15, 2026Dec 14, 2026 → Dec 17, 2026
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.

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

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

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-13 → 2026-12-16Southwest AirlinesWN459 + WN2898 / WN3946 + WN1965$435.002026-10-29T01:29:03Z
2026-12-13 → 2026-12-16American AirlinesAA2317 + AA2213 / AA3324 + AA2486$470.002026-10-29T01:29:03Z
2026-12-13 → 2026-12-16Delta Air LinesDL1102 + DL1861 / DL1925 + DL1609$500.002026-10-29T01:29:03Z
2026-12-13 → 2026-12-16Southwest AirlinesWN2030 + WN4663 / WN3946 + WN1965$435.002026-10-29T01:29:03Z
2026-12-13 → 2026-12-16Southwest AirlinesWN4205 + WN3430 / WN3946 + WN1965$435.002026-10-29T01:29:03Z
2026-12-13 → 2026-12-16Southwest AirlinesWN4122 / WN3946 + WN1965$462.502026-10-29T01:29:03Z

2026-12-13 → 2026-12-16 · $435.00

  • Southwest Airlines WN459 / WN2898: STL 2026-12-13 14:55:00 → SJU 2026-12-13 23:35:00; 1 stop(s) via BNA; 400 minutes. Local airport times.
    • WN459: STL 2026-12-13 14:55:00 → BNA 2026-12-13 16:05:00; layover at BNA: 90 minutes.
    • WN2898: BNA 2026-12-13 17:35:00 → SJU 2026-12-13 23:35:00.
  • Southwest Airlines WN3946 / WN1965: SJU 2026-12-16 14:25:00 → STL 2026-12-16 21:55:00; 1 stop(s) via FLL; 570 minutes. Local airport times.
    • WN3946: SJU 2026-12-16 14:25:00 → FLL 2026-12-16 16:20:00; layover at FLL: 215 minutes.
    • WN1965: FLL 2026-12-16 19:55:00 → STL 2026-12-16 21:55:00.

2026-12-13 → 2026-12-16 · $470.00

  • American Airlines AA2317 / AA2213: STL 2026-12-13 05:02:00 → SJU 2026-12-13 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
    • AA2317: STL 2026-12-13 05:02:00 → ORD 2026-12-13 06:30:00; layover at ORD: 105 minutes.
    • AA2213: ORD 2026-12-13 08:15:00 → SJU 2026-12-13 14:53:00.
  • American Airlines AA3324 / AA2486: SJU 2026-12-16 07:05:00 → STL 2026-12-16 13:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
    • AA3324: SJU 2026-12-16 07:05:00 → CLT 2026-12-16 10:05:00; layover at CLT: 135 minutes.
    • AA2486: CLT 2026-12-16 12:20:00 → STL 2026-12-16 13:20:00.

2026-12-13 → 2026-12-16 · $500.00

  • Delta Air Lines DL1102 / DL1861: STL 2026-12-13 14:31:00 → SJU 2026-12-13 23:10:00; 1 stop(s) via ATL; 399 minutes. Local airport times.
    • DL1102: STL 2026-12-13 14:31:00 → ATL 2026-12-13 17:05:00; layover at ATL: 100 minutes.
    • DL1861: ATL 2026-12-13 18:45:00 → SJU 2026-12-13 23:10:00.
  • Delta Air Lines DL1925 / DL1609: SJU 2026-12-16 15:40:00 → STL 2026-12-16 23:26:00; 1 stop(s) via MSP; 586 minutes. Local airport times.
    • DL1925: SJU 2026-12-16 15:40:00 → MSP 2026-12-16 19:40:00; layover at MSP: 129 minutes.
    • DL1609: MSP 2026-12-16 21:49:00 → STL 2026-12-16 23:26:00.

2026-12-13 → 2026-12-16 · $435.00

  • Southwest Airlines WN2030 / WN4663: STL 2026-12-13 17:15:00 → SJU 2026-12-14 01:40:00; 1 stop(s) via MCO; 385 minutes. Local airport times.
    • WN2030: STL 2026-12-13 17:15:00 → MCO 2026-12-13 20:30:00; layover at MCO: 75 minutes.
    • WN4663: MCO 2026-12-13 21:45:00 → SJU 2026-12-14 01:40:00.
  • Southwest Airlines WN3946 / WN1965: SJU 2026-12-16 14:25:00 → STL 2026-12-16 21:55:00; 1 stop(s) via FLL; 570 minutes. Local airport times.
    • WN3946: SJU 2026-12-16 14:25:00 → FLL 2026-12-16 16:20:00; layover at FLL: 215 minutes.
    • WN1965: FLL 2026-12-16 19:55:00 → STL 2026-12-16 21:55:00.

2026-12-13 → 2026-12-16 · $435.00

  • Southwest Airlines WN4205 / WN3430: STL 2026-12-13 15:55:00 → SJU 2026-12-14 00:55:00; 1 stop(s) via TPA; 420 minutes. Local airport times.
    • WN4205: STL 2026-12-13 15:55:00 → TPA 2026-12-13 19:10:00; layover at TPA: 110 minutes.
    • WN3430: TPA 2026-12-13 21:00:00 → SJU 2026-12-14 00:55:00.
  • Southwest Airlines WN3946 / WN1965: SJU 2026-12-16 14:25:00 → STL 2026-12-16 21:55:00; 1 stop(s) via FLL; 570 minutes. Local airport times.
    • WN3946: SJU 2026-12-16 14:25:00 → FLL 2026-12-16 16:20:00; layover at FLL: 215 minutes.
    • WN1965: FLL 2026-12-16 19:55:00 → STL 2026-12-16 21:55:00.

2026-12-13 → 2026-12-16 · $462.50

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

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For AI assistants

  • This page: Saint Louis (STL) to San Juan (SJU) · Dec 13, 2026 · return Dec 16, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
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