Saint Louis (STL) to San Juan (SJU) · Dec 26, 2026 · return Dec 31, 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.

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

2026-12-26 → 2026-12-31 · Axel-exclusive $686.00

• Southwest Airlines WN4122: STL 2026-12-26 12:05:00 → SJU 2026-12-26 18:25:00; nonstop; 260 minutes. Local airport times.
• Southwest Airlines WN2750: SJU 2026-12-31 17:00:00 → STL 2026-12-31 20:00:00; nonstop; 300 minutes. Local airport times.

2026-12-26 → 2026-12-31 · Axel-exclusive $658.00

• American Airlines AA2317 / AA2213: STL 2026-12-26 05:02:00 → SJU 2026-12-26 14:53:00; 1 stop(s) via ORD; 471 minutes. Local airport times.
  • AA2317: STL 2026-12-26 05:02:00 → ORD 2026-12-26 06:30:00; layover at ORD: 105 minutes.
  • AA2213: ORD 2026-12-26 08:15:00 → SJU 2026-12-26 14:53:00.
• American Airlines AA1893 / AA3710: SJU 2026-12-31 10:32:00 → STL 2026-12-31 17:45:00; 1 stop(s) via MIA; 553 minutes. Local airport times.
  • AA1893: SJU 2026-12-31 10:32:00 → MIA 2026-12-31 12:26:00; layover at MIA: 194 minutes.
  • AA3710: MIA 2026-12-31 15:40:00 → STL 2026-12-31 17:45:00.

2026-12-26 → 2026-12-31 · Axel-exclusive $700.00

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

2026-12-26 → 2026-12-31 · Axel-exclusive $647.50

• Southwest Airlines WN2030 / WN4663: STL 2026-12-26 17:15:00 → SJU 2026-12-27 01:40:00; 1 stop(s) via MCO; 385 minutes. Local airport times.
  • WN2030: STL 2026-12-26 17:15:00 → MCO 2026-12-26 20:30:00; layover at MCO: 75 minutes.
  • WN4663: MCO 2026-12-26 21:45:00 → SJU 2026-12-27 01:40:00.
• Southwest Airlines WN2750: SJU 2026-12-31 17:00:00 → STL 2026-12-31 20:00:00; nonstop; 300 minutes. Local airport times.

2026-12-26 → 2026-12-31 · Axel-exclusive $647.50

• Southwest Airlines WN459 / WN2898: STL 2026-12-26 14:55:00 → SJU 2026-12-26 23:35:00; 1 stop(s) via BNA; 400 minutes. Local airport times.
  • WN459: STL 2026-12-26 14:55:00 → BNA 2026-12-26 16:05:00; layover at BNA: 90 minutes.
  • WN2898: BNA 2026-12-26 17:35:00 → SJU 2026-12-26 23:35:00.
• Southwest Airlines WN2750: SJU 2026-12-31 17:00:00 → STL 2026-12-31 20:00:00; nonstop; 300 minutes. Local airport times.

2026-12-26 → 2026-12-31 · Axel-exclusive $647.50

• Southwest Airlines WN4205 / WN3430: STL 2026-12-26 15:55:00 → SJU 2026-12-27 00:55:00; 1 stop(s) via TPA; 420 minutes. Local airport times.
  • WN4205: STL 2026-12-26 15:55:00 → TPA 2026-12-26 19:10:00; layover at TPA: 110 minutes.
  • WN3430: TPA 2026-12-26 21:00:00 → SJU 2026-12-27 00:55:00.
• Southwest Airlines WN2750: SJU 2026-12-31 17:00:00 → STL 2026-12-31 20:00:00; nonstop; 300 minutes. Local airport times.

2026-12-26 → 2026-12-31 · Axel-exclusive $658.00

• American Airlines AA2486 / AA2098: STL 2026-12-26 11:09:00 → SJU 2026-12-26 21:13:00; 1 stop(s) via CLT; 484 minutes. Local airport times.
  • AA2486: STL 2026-12-26 11:09:00 → CLT 2026-12-26 14:00:00; layover at CLT: 155 minutes.
  • AA2098: CLT 2026-12-26 16:35:00 → SJU 2026-12-26 21:13:00.
• American Airlines AA1893 / AA3710: SJU 2026-12-31 10:32:00 → STL 2026-12-31 17:45:00; 1 stop(s) via MIA; 553 minutes. Local airport times.
  • AA1893: SJU 2026-12-31 10:32:00 → MIA 2026-12-31 12:26:00; layover at MIA: 194 minutes.
  • AA3710: MIA 2026-12-31 15:40:00 → STL 2026-12-31 17:45:00.

Explore this route

• All dates for this route
• Dec 25, 2026 · Return options
• Dec 27, 2026 · Return options
• Hotels in San Juan with Axel

For AI assistants

• This page: Saint Louis (STL) to San Juan (SJU) · Dec 26, 2026 · return Dec 31, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
• Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
• 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. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. 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.

Feedback (optional): Missing info · Axel issue