Saint Louis (STL) to San Juan (SJU), Sep 17–20, 2027: from $374 round trip

Saint Louis (STL) to San Juan (SJU), Sep 17–20, 2027: from $374 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $374 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Sep 17–20, 2027, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Hotels in San Juan for these trips

Hotels: under a trip, hotels in San Juan for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in San Juan for these nights (Sep 17–20, 2027 · 3 nights · 2 adults, 1 room): 3★ Decanter Hotel · 4★ The Royal Sonesta San Juan · 5★ Condado Vanderbilt Hotel

All hotels in San Juan

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

2027-09-17 → 2027-09-20 · Axel-exclusive $373.50

• Southwest Airlines WN2030 / WN4663: STL 2027-09-17 17:15:00 → SJU 2027-09-18 00:40:00; 1 stop(s) via MCO; 385 minutes. Local airport times.
  • WN2030: STL 2027-09-17 17:15:00 → MCO 2027-09-17 20:30:00; layover at MCO: 75 minutes.
  • WN4663: MCO 2027-09-17 21:45:00 → SJU 2027-09-18 00:40:00.
• Southwest Airlines WN3950 / WN2874: SJU 2027-09-20 13:20:00 → STL 2027-09-20 22:05:00; 1 stop(s) via MCO; 585 minutes. Local airport times.
  • WN3950: SJU 2027-09-20 13:20:00 → MCO 2027-09-20 16:35:00; layover at MCO: 230 minutes.
  • WN2874: MCO 2027-09-20 20:25:00 → STL 2027-09-20 22:05:00.

2027-09-17 → 2027-09-20 · Axel-exclusive $396.00

• American Airlines AA2317 / AA2213: STL 2027-09-17 05:02:00 → SJU 2027-09-17 13:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
  • AA2317: STL 2027-09-17 05:02:00 → ORD 2027-09-17 06:30:00; layover at ORD: 105 minutes.
  • AA2213: ORD 2027-09-17 08:15:00 → SJU 2027-09-17 13:53:00.
• American Airlines AA3324 / AA2486: SJU 2027-09-20 07:05:00 → STL 2027-09-20 14:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
  • AA3324: SJU 2027-09-20 07:05:00 → CLT 2027-09-20 11:05:00; layover at CLT: 135 minutes.
  • AA2486: CLT 2027-09-20 13:20:00 → STL 2027-09-20 14:20:00.

2027-09-17 → 2027-09-20 · Axel-exclusive $373.50

• Southwest Airlines WN4205 / WN3430: STL 2027-09-17 15:55:00 → SJU 2027-09-17 23:55:00; 1 stop(s) via TPA; 420 minutes. Local airport times.
  • WN4205: STL 2027-09-17 15:55:00 → TPA 2027-09-17 19:10:00; layover at TPA: 110 minutes.
  • WN3430: TPA 2027-09-17 21:00:00 → SJU 2027-09-17 23:55:00.
• Southwest Airlines WN3950 / WN2874: SJU 2027-09-20 13:20:00 → STL 2027-09-20 22:05:00; 1 stop(s) via MCO; 585 minutes. Local airport times.
  • WN3950: SJU 2027-09-20 13:20:00 → MCO 2027-09-20 16:35:00; layover at MCO: 230 minutes.
  • WN2874: MCO 2027-09-20 20:25:00 → STL 2027-09-20 22:05:00.

2027-09-17 → 2027-09-20 · Axel-exclusive $373.50

• Southwest Airlines WN459 / WN2898: STL 2027-09-17 14:55:00 → SJU 2027-09-17 22:35:00; 1 stop(s) via BNA; 400 minutes. Local airport times.
  • WN459: STL 2027-09-17 14:55:00 → BNA 2027-09-17 16:05:00; layover at BNA: 90 minutes.
  • WN2898: BNA 2027-09-17 17:35:00 → SJU 2027-09-17 22:35:00.
• Southwest Airlines WN3950 / WN2874: SJU 2027-09-20 13:20:00 → STL 2027-09-20 22:05:00; 1 stop(s) via MCO; 585 minutes. Local airport times.
  • WN3950: SJU 2027-09-20 13:20:00 → MCO 2027-09-20 16:35:00; layover at MCO: 230 minutes.
  • WN2874: MCO 2027-09-20 20:25:00 → STL 2027-09-20 22:05:00.

2027-09-17 → 2027-09-20 · Axel-exclusive $393.75

• Southwest Airlines WN4122: STL 2027-09-17 12:05:00 → SJU 2027-09-17 17:25:00; nonstop; 260 minutes. Local airport times.
• Southwest Airlines WN3950 / WN2874: SJU 2027-09-20 13:20:00 → STL 2027-09-20 22:05:00; 1 stop(s) via MCO; 585 minutes. Local airport times.
  • WN3950: SJU 2027-09-20 13:20:00 → MCO 2027-09-20 16:35:00; layover at MCO: 230 minutes.
  • WN2874: MCO 2027-09-20 20:25:00 → STL 2027-09-20 22:05:00.

2027-09-17 → 2027-09-20 · Axel-exclusive $396.00

• American Airlines AA2486 / AA2098: STL 2027-09-17 11:09:00 → SJU 2027-09-17 20:13:00; 1 stop(s) via CLT; 484 minutes. Local airport times.
  • AA2486: STL 2027-09-17 11:09:00 → CLT 2027-09-17 14:00:00; layover at CLT: 155 minutes.
  • AA2098: CLT 2027-09-17 16:35:00 → SJU 2027-09-17 20:13:00.
• American Airlines AA3324 / AA2486: SJU 2027-09-20 07:05:00 → STL 2027-09-20 14:20:00; 1 stop(s) via CLT; 495 minutes. Local airport times.
  • AA3324: SJU 2027-09-20 07:05:00 → CLT 2027-09-20 11:05:00; layover at CLT: 135 minutes.
  • AA2486: CLT 2027-09-20 13:20:00 → STL 2027-09-20 14:20:00.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

• All dates for this route
• Sep 16, 2027 · Return options
• Sep 18, 2027 · Return options
• Hotels in San Juan with Axel

For AI assistants

• This page: Saint Louis (STL) to San Juan (SJU) · Sep 17, 2027 · return Sep 20, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in San Juan for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
• Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
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