San Diego (SAN) to Saint Louis (STL) · Dec 18, 2026 · return Jan 1, 2027

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: San Diego to Saint Louis (STL) flight deals

2026-12-18 → 2027-01-01 · Axel-exclusive $518.00

• Southwest Airlines WN4711: SAN 2026-12-18 11:55:00 → STL 2026-12-18 17:25:00; nonstop; 210 minutes. Local airport times.
• Southwest Airlines WN4452: STL 2027-01-01 08:50:00 → SAN 2027-01-01 10:50:00; nonstop; 240 minutes. Local airport times.

2026-12-18 → 2027-01-01 · Axel-exclusive $399.00

• United Airlines UA2476 / UA1639: SAN 2026-12-18 08:40:00 → STL 2026-12-18 16:57:00; 1 stop(s) via DEN; 377 minutes. Local airport times.
  • UA2476: SAN 2026-12-18 08:40:00 → DEN 2026-12-18 12:06:00; layover at DEN: 109 minutes.
  • UA1639: DEN 2026-12-18 13:55:00 → STL 2026-12-18 16:57:00.
• Frontier Airlines F94567 / F92711: STL 2027-01-01 19:58:00 → SAN 2027-01-01 23:58:00; 1 stop(s) via DEN; 360 minutes. Local airport times.
  • F94567: STL 2027-01-01 19:58:00 → DEN 2027-01-01 21:29:00; layover at DEN: 60 minutes.
  • F92711: DEN 2027-01-01 22:29:00 → SAN 2027-01-01 23:58:00.

2026-12-18 → 2027-01-01 · Axel-exclusive $490.00

• American Airlines AA2438 / AA2289: SAN 2026-12-18 15:13:00 → STL 2026-12-18 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
  • AA2438: SAN 2026-12-18 15:13:00 → DFW 2026-12-18 20:30:00; layover at DFW: 75 minutes.
  • AA2289: DFW 2026-12-18 21:45:00 → STL 2026-12-18 23:34:00.
• American Airlines AA2303 / AA2016: STL 2027-01-01 14:23:00 → SAN 2027-01-01 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
  • AA2303: STL 2027-01-01 14:23:00 → PHX 2027-01-01 16:51:00; layover at PHX: 74 minutes.
  • AA2016: PHX 2027-01-01 18:05:00 → SAN 2027-01-01 18:24:00.

2026-12-18 → 2027-01-01 · Axel-exclusive $518.00

• Southwest Airlines WN3823: SAN 2026-12-18 18:20:00 → STL 2026-12-18 23:45:00; nonstop; 205 minutes. Local airport times.
• Southwest Airlines WN4452: STL 2027-01-01 08:50:00 → SAN 2027-01-01 10:50:00; nonstop; 240 minutes. Local airport times.

2026-12-18 → 2027-01-01 · Axel-exclusive $490.00

• Southwest Airlines WN3727 / WN3528: SAN 2026-12-18 15:40:00 → STL 2026-12-19 00:20:00; 1 stop(s) via PHX; 400 minutes. Local airport times.
  • WN3727: SAN 2026-12-18 15:40:00 → PHX 2026-12-18 18:00:00; layover at PHX: 145 minutes.
  • WN3528: PHX 2026-12-18 20:25:00 → STL 2026-12-19 00:20:00.
• Southwest Airlines WN4452: STL 2027-01-01 08:50:00 → SAN 2027-01-01 10:50:00; nonstop; 240 minutes. Local airport times.

2026-12-18 → 2027-01-01 · Axel-exclusive $490.00

• Southwest Airlines WN2227 / WN1498: SAN 2026-12-18 13:25:00 → STL 2026-12-18 21:10:00; 1 stop(s) via DAL; 345 minutes. Local airport times.
  • WN2227: SAN 2026-12-18 13:25:00 → DAL 2026-12-18 18:20:00; layover at DAL: 60 minutes.
  • WN1498: DAL 2026-12-18 19:20:00 → STL 2026-12-18 21:10:00.
• Southwest Airlines WN4452: STL 2027-01-01 08:50:00 → SAN 2027-01-01 10:50:00; nonstop; 240 minutes. Local airport times.

2026-12-18 → 2027-01-01 · Axel-exclusive $490.00

• Southwest Airlines WN3701 / WN1845: SAN 2026-12-18 17:20:00 → STL 2026-12-19 00:50:00; 1 stop(s) via DEN; 330 minutes. Local airport times.
  • WN3701: SAN 2026-12-18 17:20:00 → DEN 2026-12-18 20:40:00; layover at DEN: 70 minutes.
  • WN1845: DEN 2026-12-18 21:50:00 → STL 2026-12-19 00:50:00.
• Southwest Airlines WN4452: STL 2027-01-01 08:50:00 → SAN 2027-01-01 10:50:00; nonstop; 240 minutes. Local airport times.

2026-12-18 → 2027-01-01 · Axel-exclusive $490.00

• Southwest Airlines WN2893 / WN3801: SAN 2026-12-18 09:15:00 → STL 2026-12-18 17:20:00; 1 stop(s) via SAT; 365 minutes. Local airport times.
  • WN2893: SAN 2026-12-18 09:15:00 → SAT 2026-12-18 14:00:00; layover at SAT: 80 minutes.
  • WN3801: SAT 2026-12-18 15:20:00 → STL 2026-12-18 17:20:00.
• Southwest Airlines WN4452: STL 2027-01-01 08:50:00 → SAN 2027-01-01 10:50:00; nonstop; 240 minutes. Local airport times.

Explore this route

• All dates for this route
• Dec 17, 2026 · Return options
• Dec 19, 2026 · Return options
• Hotels in St. Louis with Axel

For AI assistants

• This page: San Diego (SAN) to Saint Louis (STL) · Dec 18, 2026 · return Jan 1, 2027: 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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