Denver (DEN) to Saint Louis (STL), Dec 4–6, 2026: from $75 one way

Denver (DEN) to Saint Louis (STL), Dec 4–6, 2026: from $75 one way on Axel, checked Oct 29, 2026. Lowest published fare: $75 one way, Axel-exclusive, Frontier Airlines, nonstop, Dec 4, 2026, 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.

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

2026-12-04 · one way · Axel-exclusive $75.00

• Frontier Airlines F93302: DEN 2026-12-04 07:47:00 → STL 2026-12-04 10:57:00; nonstop; 130 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $140.00

• Southwest Airlines WN1807: DEN 2026-12-04 10:30:00 → STL 2026-12-04 13:30:00; nonstop; 120 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $145.00

• United Airlines UA1422: DEN 2026-12-04 17:49:00 → STL 2026-12-04 20:57:00; nonstop; 128 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $155.00

• American Airlines AA2579 / AA2246: DEN 2026-12-04 13:15:00 → STL 2026-12-04 19:36:00; 1 stop(s) via DFW; 321 minutes. Local airport times.
  • AA2579: DEN 2026-12-04 13:15:00 → DFW 2026-12-04 16:20:00; layover at DFW: 95 minutes.
  • AA2246: DFW 2026-12-04 17:55:00 → STL 2026-12-04 19:36:00.

2026-12-05 · one way · Axel-exclusive $75.00

• Frontier Airlines F9630: DEN 2026-12-05 12:23:00 → STL 2026-12-05 15:26:00; nonstop; 123 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $75.00

• Frontier Airlines F9630: DEN 2026-12-06 12:23:00 → STL 2026-12-06 15:26:00; nonstop; 123 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $75.00

• Frontier Airlines F93302: DEN 2026-12-05 07:55:00 → STL 2026-12-05 11:03:00; nonstop; 128 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $75.00

• Frontier Airlines F9630: DEN 2026-12-04 12:23:00 → STL 2026-12-04 15:26:00; nonstop; 123 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $75.00

• Frontier Airlines F93302: DEN 2026-12-06 07:47:00 → STL 2026-12-06 10:57:00; nonstop; 130 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $140.00

• Southwest Airlines WN1845: DEN 2026-12-04 20:55:00 → STL 2026-12-04 23:55:00; nonstop; 120 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $140.00

• Southwest Airlines WN1845: DEN 2026-12-06 20:55:00 → STL 2026-12-06 23:55:00; nonstop; 120 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $140.00

• Southwest Airlines WN1807: DEN 2026-12-06 10:30:00 → STL 2026-12-06 13:30:00; nonstop; 120 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $140.00

• Southwest Airlines WN719: DEN 2026-12-05 10:30:00 → STL 2026-12-05 13:30:00; nonstop; 120 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $140.00

• Southwest Airlines WN1845: DEN 2026-12-05 21:55:00 → STL 2026-12-06 00:55:00; nonstop; 120 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $145.00

• United Airlines UA652: DEN 2026-12-04 09:50:00 → STL 2026-12-04 12:53:00; nonstop; 123 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $145.00

• United Airlines UA1422: DEN 2026-12-06 17:49:00 → STL 2026-12-06 20:57:00; nonstop; 128 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $145.00

• United Airlines UA1422: DEN 2026-12-05 17:49:00 → STL 2026-12-05 20:57:00; nonstop; 128 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $145.00

• United Airlines UA652: DEN 2026-12-05 09:35:00 → STL 2026-12-05 12:38:00; nonstop; 123 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $145.00

• United Airlines UA652: DEN 2026-12-06 09:50:00 → STL 2026-12-06 12:53:00; nonstop; 123 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $150.00

• Southwest Airlines WN2075 / WN2715: DEN 2026-12-04 14:00:00 → STL 2026-12-04 19:10:00; 1 stop(s) via MCI; 250 minutes. Local airport times.
  • WN2075: DEN 2026-12-04 14:00:00 → MCI 2026-12-04 16:35:00; layover at MCI: 90 minutes.
  • WN2715: MCI 2026-12-04 18:05:00 → STL 2026-12-04 19:10:00.

2026-12-06 · one way · Axel-exclusive $150.00

• Southwest Airlines WN235 / WN4472: DEN 2026-12-06 18:30:00 → STL 2026-12-07 00:35:00; 1 stop(s) via DAL; 305 minutes. Local airport times.
  • WN235: DEN 2026-12-06 18:30:00 → DAL 2026-12-06 21:30:00; layover at DAL: 80 minutes.
  • WN4472: DAL 2026-12-06 22:50:00 → STL 2026-12-07 00:35:00.

2026-12-05 · one way · Axel-exclusive $150.00

• Southwest Airlines WN2832 / WN3131: DEN 2026-12-05 11:05:00 → STL 2026-12-05 16:45:00; 1 stop(s) via MSP; 280 minutes. Local airport times.
  • WN2832: DEN 2026-12-05 11:05:00 → MSP 2026-12-05 14:05:00; layover at MSP: 65 minutes.
  • WN3131: MSP 2026-12-05 15:10:00 → STL 2026-12-05 16:45:00.

2026-12-06 · one way · Axel-exclusive $150.00

• Southwest Airlines WN1706 / WN3113: DEN 2026-12-06 10:40:00 → STL 2026-12-06 17:00:00; 1 stop(s) via MKE; 320 minutes. Local airport times.
  • WN1706: DEN 2026-12-06 10:40:00 → MKE 2026-12-06 13:55:00; layover at MKE: 105 minutes.
  • WN3113: MKE 2026-12-06 15:40:00 → STL 2026-12-06 17:00:00.

2026-12-06 · one way · Axel-exclusive $150.00

• Southwest Airlines WN2075 / WN2715: DEN 2026-12-06 14:00:00 → STL 2026-12-06 19:10:00; 1 stop(s) via MCI; 250 minutes. Local airport times.
  • WN2075: DEN 2026-12-06 14:00:00 → MCI 2026-12-06 16:35:00; layover at MCI: 90 minutes.
  • WN2715: MCI 2026-12-06 18:05:00 → STL 2026-12-06 19:10:00.

2026-12-04 · one way · Axel-exclusive $150.00

• Southwest Airlines WN1573 / WN742: DEN 2026-12-04 14:25:00 → STL 2026-12-04 20:45:00; 1 stop(s) via BNA; 320 minutes. Local airport times.
  • WN1573: DEN 2026-12-04 14:25:00 → BNA 2026-12-04 17:45:00; layover at BNA: 105 minutes.
  • WN742: BNA 2026-12-04 19:30:00 → STL 2026-12-04 20:45:00.

2026-12-06 · one way · Axel-exclusive $150.00

• Southwest Airlines WN2832 / WN3131: DEN 2026-12-06 11:05:00 → STL 2026-12-06 16:45:00; 1 stop(s) via MSP; 280 minutes. Local airport times.
  • WN2832: DEN 2026-12-06 11:05:00 → MSP 2026-12-06 14:05:00; layover at MSP: 65 minutes.
  • WN3131: MSP 2026-12-06 15:10:00 → STL 2026-12-06 16:45:00.

2026-12-05 · one way · Axel-exclusive $150.00

• Southwest Airlines WN2075 / WN2715: DEN 2026-12-05 14:00:00 → STL 2026-12-05 19:10:00; 1 stop(s) via MCI; 250 minutes. Local airport times.
  • WN2075: DEN 2026-12-05 14:00:00 → MCI 2026-12-05 16:35:00; layover at MCI: 90 minutes.
  • WN2715: MCI 2026-12-05 18:05:00 → STL 2026-12-05 19:10:00.

2026-12-04 · one way · Axel-exclusive $150.00

• Southwest Airlines WN1706 / WN3113: DEN 2026-12-04 10:40:00 → STL 2026-12-04 17:00:00; 1 stop(s) via MKE; 320 minutes. Local airport times.
  • WN1706: DEN 2026-12-04 10:40:00 → MKE 2026-12-04 13:55:00; layover at MKE: 105 minutes.
  • WN3113: MKE 2026-12-04 15:40:00 → STL 2026-12-04 17:00:00.

2026-12-06 · one way · Axel-exclusive $150.00

• Southwest Airlines WN1573 / WN742: DEN 2026-12-06 14:25:00 → STL 2026-12-06 20:45:00; 1 stop(s) via BNA; 320 minutes. Local airport times.
  • WN1573: DEN 2026-12-06 14:25:00 → BNA 2026-12-06 17:45:00; layover at BNA: 105 minutes.
  • WN742: BNA 2026-12-06 19:30:00 → STL 2026-12-06 20:45:00.

2026-12-05 · one way · Axel-exclusive $150.00

• Southwest Airlines WN1573 / WN742: DEN 2026-12-05 14:25:00 → STL 2026-12-05 20:45:00; 1 stop(s) via BNA; 320 minutes. Local airport times.
  • WN1573: DEN 2026-12-05 14:25:00 → BNA 2026-12-05 17:45:00; layover at BNA: 105 minutes.
  • WN742: BNA 2026-12-05 19:30:00 → STL 2026-12-05 20:45:00.

2026-12-04 · one way · Axel-exclusive $150.00

• Southwest Airlines WN2832 / WN3131: DEN 2026-12-04 11:05:00 → STL 2026-12-04 16:45:00; 1 stop(s) via MSP; 280 minutes. Local airport times.
  • WN2832: DEN 2026-12-04 11:05:00 → MSP 2026-12-04 14:05:00; layover at MSP: 65 minutes.
  • WN3131: MSP 2026-12-04 15:10:00 → STL 2026-12-04 16:45:00.

2026-12-05 · one way · Axel-exclusive $150.00

• Southwest Airlines WN1706 / WN3113: DEN 2026-12-05 10:40:00 → STL 2026-12-05 17:00:00; 1 stop(s) via MKE; 320 minutes. Local airport times.
  • WN1706: DEN 2026-12-05 10:40:00 → MKE 2026-12-05 13:55:00; layover at MKE: 105 minutes.
  • WN3113: MKE 2026-12-05 15:40:00 → STL 2026-12-05 17:00:00.

2026-12-04 · one way · Axel-exclusive $150.00

• Southwest Airlines WN235 / WN4472: DEN 2026-12-04 18:30:00 → STL 2026-12-05 00:35:00; 1 stop(s) via DAL; 305 minutes. Local airport times.
  • WN235: DEN 2026-12-04 18:30:00 → DAL 2026-12-04 21:30:00; layover at DAL: 80 minutes.
  • WN4472: DAL 2026-12-04 22:50:00 → STL 2026-12-05 00:35:00.

2026-12-05 · one way · Axel-exclusive $150.00

• Southwest Airlines WN235 / WN4472: DEN 2026-12-05 18:30:00 → STL 2026-12-06 00:35:00; 1 stop(s) via DAL; 305 minutes. Local airport times.
  • WN235: DEN 2026-12-05 18:30:00 → DAL 2026-12-05 21:30:00; layover at DAL: 80 minutes.
  • WN4472: DAL 2026-12-05 22:50:00 → STL 2026-12-06 00:35:00.

2026-12-06 · one way · Axel-exclusive $155.00

• American Airlines AA2579 / AA2246: DEN 2026-12-06 13:15:00 → STL 2026-12-06 19:36:00; 1 stop(s) via DFW; 321 minutes. Local airport times.
  • AA2579: DEN 2026-12-06 13:15:00 → DFW 2026-12-06 16:20:00; layover at DFW: 95 minutes.
  • AA2246: DFW 2026-12-06 17:55:00 → STL 2026-12-06 19:36:00.

2026-12-05 · one way · Axel-exclusive $155.00

• American Airlines AA2579 / AA2246: DEN 2026-12-05 13:15:00 → STL 2026-12-05 19:36:00; 1 stop(s) via DFW; 321 minutes. Local airport times.
  • AA2579: DEN 2026-12-05 13:15:00 → DFW 2026-12-05 16:20:00; layover at DFW: 95 minutes.
  • AA2246: DFW 2026-12-05 17:55:00 → STL 2026-12-05 19:36:00.

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.

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