Saint Louis (STL) to Denver (DEN) · Dec 19, 2026 · one way

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

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Route overview: Saint Louis to Denver (DEN) flight deals

2026-12-19 · one way · Axel-exclusive $110.50

• Frontier Airlines F94567: STL 2026-12-19 16:21:00 → DEN 2026-12-19 17:52:00; nonstop; 151 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $188.50

• Southwest Airlines WN4141: STL 2026-12-19 08:55:00 → DEN 2026-12-19 10:20:00; nonstop; 145 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $201.50

• United Airlines UA5939: STL 2026-12-19 14:25:00 → DEN 2026-12-19 16:13:00; nonstop; 168 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $240.50

• Delta Air Lines DL1597 / DL2849: STL 2026-12-19 06:03:00 → DEN 2026-12-19 10:03:00; 1 stop(s) via MSP; 300 minutes. Local airport times.
  • DL1597: STL 2026-12-19 06:03:00 → MSP 2026-12-19 07:43:00; layover at MSP: 67 minutes.
  • DL2849: MSP 2026-12-19 08:50:00 → DEN 2026-12-19 10:03:00.

2026-12-19 · one way · Axel-exclusive $188.50

• Southwest Airlines WN1508: STL 2026-12-19 12:55:00 → DEN 2026-12-19 14:15:00; nonstop; 140 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $201.50

• United Airlines UA2459: STL 2026-12-19 08:48:00 → DEN 2026-12-19 10:26:00; nonstop; 158 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $201.50

• Southwest Airlines WN665 / WN1313: STL 2026-12-19 10:35:00 → DEN 2026-12-19 15:05:00; 1 stop(s) via BNA; 330 minutes. Local airport times.
  • WN665: STL 2026-12-19 10:35:00 → BNA 2026-12-19 11:40:00; layover at BNA: 90 minutes.
  • WN1313: BNA 2026-12-19 13:10:00 → DEN 2026-12-19 15:05:00.

2026-12-19 · one way · Axel-exclusive $201.50

• Southwest Airlines WN4372 / WN1758: STL 2026-12-19 12:40:00 → DEN 2026-12-19 16:30:00; 1 stop(s) via MCI; 290 minutes. Local airport times.
  • WN4372: STL 2026-12-19 12:40:00 → MCI 2026-12-19 13:45:00; layover at MCI: 115 minutes.
  • WN1758: MCI 2026-12-19 15:40:00 → DEN 2026-12-19 16:30:00.

2026-12-19 · one way · Axel-exclusive $201.50

• Southwest Airlines WN2015 / WN200: STL 2026-12-19 15:50:00 → DEN 2026-12-19 20:55:00; 1 stop(s) via DAL; 365 minutes. Local airport times.
  • WN2015: STL 2026-12-19 15:50:00 → DAL 2026-12-19 17:30:00; layover at DAL: 130 minutes.
  • WN200: DAL 2026-12-19 19:40:00 → DEN 2026-12-19 20:55:00.

2026-12-19 · one way · Axel-exclusive $201.50

• Southwest Airlines WN3286 / WN1766: STL 2026-12-19 08:20:00 → DEN 2026-12-19 12:20:00; 1 stop(s) via OMA; 300 minutes. Local airport times.
  • WN3286: STL 2026-12-19 08:20:00 → OMA 2026-12-19 09:35:00; layover at OMA: 120 minutes.
  • WN1766: OMA 2026-12-19 11:35:00 → DEN 2026-12-19 12:20:00.

2026-12-19 · one way · Axel-exclusive $214.50

• United Airlines UA4439 / UA2495: STL 2026-12-19 05:25:00 → DEN 2026-12-19 10:26:00; 1 stop(s) via ORD; 361 minutes. Local airport times.
  • UA4439: STL 2026-12-19 05:25:00 → ORD 2026-12-19 06:58:00; layover at ORD: 102 minutes.
  • UA2495: ORD 2026-12-19 08:40:00 → DEN 2026-12-19 10:26:00.

Explore this route

• All dates for this route
• Dec 18, 2026 · Return options
• Dec 20, 2026 · Return options
• Hotels in Denver with Axel

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