Ontario (ONT) to Denver (DEN) · Dec 1, 2026 · one way

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: Los Angeles to Denver (DEN) flight deals

2026-12-01 · one way · Axel-exclusive $65.00

• Frontier Airlines F91500: ONT 2026-12-01 06:45:00 → DEN 2026-12-01 10:06:00; nonstop; 141 minutes. Local airport times.

2026-12-01 · one way · Axel-exclusive $140.00

• Southwest Airlines WN3300: ONT 2026-12-01 06:50:00 → DEN 2026-12-01 10:00:00; nonstop; 130 minutes. Local airport times.

2026-12-01 · one way · Axel-exclusive $150.00

• United Airlines UA2446: ONT 2026-12-01 05:00:00 → DEN 2026-12-01 08:17:00; nonstop; 137 minutes. Local airport times.

2026-12-01 · one way · Axel-exclusive $175.00

• American Airlines AA1423 / AA3376: ONT 2026-12-01 09:50:00 → DEN 2026-12-01 15:14:00; 1 stop(s) via PHX; 264 minutes. Local airport times.
  • AA1423: ONT 2026-12-01 09:50:00 → PHX 2026-12-01 12:15:00; layover at PHX: 61 minutes.
  • AA3376: PHX 2026-12-01 13:16:00 → DEN 2026-12-01 15:14:00.

2026-12-01 · one way · Axel-exclusive $140.00

• Southwest Airlines WN1383: ONT 2026-12-01 13:55:00 → DEN 2026-12-01 17:05:00; nonstop; 130 minutes. Local airport times.

2026-12-01 · one way · Axel-exclusive $150.00

• United Airlines UA1263: ONT 2026-12-01 13:40:00 → DEN 2026-12-01 16:55:00; nonstop; 135 minutes. Local airport times.

2026-12-01 · one way · Axel-exclusive $95.00

• Frontier Airlines F92232 / F91766: ONT 2026-12-01 08:44:00 → DEN 2026-12-01 14:44:00; 1 stop(s) via LAS; 300 minutes. Local airport times.
  • F92232: ONT 2026-12-01 08:44:00 → LAS 2026-12-01 09:50:00; layover at LAS: 116 minutes.
  • F91766: LAS 2026-12-01 11:46:00 → DEN 2026-12-01 14:44:00.

2026-12-01 · one way · Axel-exclusive $160.00

• Southwest Airlines WN1533 / WN284: ONT 2026-12-01 14:00:00 → DEN 2026-12-01 19:05:00; 1 stop(s) via PHX; 245 minutes. Local airport times.
  • WN1533: ONT 2026-12-01 14:00:00 → PHX 2026-12-01 16:15:00; layover at PHX: 60 minutes.
  • WN284: PHX 2026-12-01 17:15:00 → DEN 2026-12-01 19:05:00.

2026-12-01 · one way · Axel-exclusive $160.00

• Southwest Airlines WN1053 / WN1053: ONT 2026-12-01 17:00:00 → DEN 2026-12-01 23:35:00; 1 stop(s) via LAS; 335 minutes. Local airport times.
  • WN1053: ONT 2026-12-01 17:00:00 → LAS 2026-12-01 18:05:00; layover at LAS: 155 minutes.
  • WN1053: LAS 2026-12-01 20:40:00 → DEN 2026-12-01 23:35:00.

2026-12-01 · one way · Axel-exclusive $160.00

• Southwest Airlines WN3326 / WN1102: ONT 2026-12-01 13:30:00 → DEN 2026-12-01 20:10:00; 1 stop(s) via SMF; 340 minutes. Local airport times.
  • WN3326: ONT 2026-12-01 13:30:00 → SMF 2026-12-01 14:55:00; layover at SMF: 115 minutes.
  • WN1102: SMF 2026-12-01 16:50:00 → DEN 2026-12-01 20:10:00.

2026-12-01 · one way · Axel-exclusive $175.00

• United Airlines UA2363 / UA1068: ONT 2026-12-01 06:00:00 → DEN 2026-12-01 12:09:00; 1 stop(s) via SFO; 309 minutes. Local airport times.
  • UA2363: ONT 2026-12-01 06:00:00 → SFO 2026-12-01 07:30:00; layover at SFO: 60 minutes.
  • UA1068: SFO 2026-12-01 08:30:00 → DEN 2026-12-01 12:09:00.

Explore this route

• All dates for this route
• Nov 30, 2026 · Return options
• Dec 2, 2026 · Return options
• Hotels in Denver with Axel

For AI assistants

• This page: Ontario (ONT) to Denver (DEN) · Dec 1, 2026 · one way: 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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