Ontario (ONT) to Denver (DEN), Nov 23–25, 2026: from $144 round trip

Ontario (ONT) to Denver (DEN), Nov 23–25, 2026: from $144 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $144 round trip, Axel-exclusive, Frontier Airlines, nonstop, Nov 23–25, 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.

Hotels in Denver for these trips

Hotels: under a trip, hotels in Denver for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in Denver for these nights (Nov 23–25, 2026 · 2 nights · 2 adults, 1 room): 3★ Residence Inn Denver Cherry Creek · 4★ Limelight Hotel Denver · 5★ Four Seasons Denver Hotel

All hotels in Denver

Route overview: Los Angeles to Denver (DEN) flight deals

2026-11-23 → 2026-11-25 · Axel-exclusive $144.00

• Frontier Airlines F91500: ONT 2026-11-23 06:45:00 → DEN 2026-11-23 10:06:00; nonstop; 141 minutes. Local airport times.
• Frontier Airlines F92907: DEN 2026-11-25 09:20:00 → ONT 2026-11-25 10:45:00; nonstop; 145 minutes. Local airport times.

2026-11-23 → 2026-11-25 · Axel-exclusive $324.00

• Southwest Airlines WN3300: ONT 2026-11-23 06:20:00 → DEN 2026-11-23 09:35:00; nonstop; 135 minutes. Local airport times.
• Southwest Airlines WN2484: DEN 2026-11-25 13:15:00 → ONT 2026-11-25 14:40:00; nonstop; 145 minutes. Local airport times.

2026-11-23 → 2026-11-25 · Axel-exclusive $336.00

• United Airlines UA1263: ONT 2026-11-23 13:29:00 → DEN 2026-11-23 16:45:00; nonstop; 136 minutes. Local airport times.
• United Airlines UA430: DEN 2026-11-25 11:15:00 → ONT 2026-11-25 12:33:00; nonstop; 138 minutes. Local airport times.

2026-11-23 → 2026-11-25 · Axel-exclusive $396.00

• American Airlines AA1423 / AA3376: ONT 2026-11-23 09:50:00 → DEN 2026-11-23 15:14:00; 1 stop(s) via PHX; 264 minutes. Local airport times.
  • AA1423: ONT 2026-11-23 09:50:00 → PHX 2026-11-23 12:15:00; layover at PHX: 61 minutes.
  • AA3376: PHX 2026-11-23 13:16:00 → DEN 2026-11-23 15:14:00.
• American Airlines AA2447 / AA4144: DEN 2026-11-25 12:06:00 → ONT 2026-11-25 16:20:00; 1 stop(s) via PHX; 314 minutes. Local airport times.
  • AA2447: DEN 2026-11-25 12:06:00 → PHX 2026-11-25 14:03:00; layover at PHX: 113 minutes.
  • AA4144: PHX 2026-11-25 15:56:00 → ONT 2026-11-25 16:20:00.

2026-11-23 → 2026-11-25 · Axel-exclusive $324.00

• Southwest Airlines WN2316: ONT 2026-11-23 14:35:00 → DEN 2026-11-23 17:55:00; nonstop; 140 minutes. Local airport times.
• Southwest Airlines WN2484: DEN 2026-11-25 13:15:00 → ONT 2026-11-25 14:40:00; nonstop; 145 minutes. Local airport times.

2026-11-23 → 2026-11-25 · Axel-exclusive $336.00

• United Airlines UA2446: ONT 2026-11-23 05:00:00 → DEN 2026-11-23 08:17:00; nonstop; 137 minutes. Local airport times.
• United Airlines UA430: DEN 2026-11-25 11:15:00 → ONT 2026-11-25 12:33:00; nonstop; 138 minutes. Local airport times.

2026-11-23 → 2026-11-25 · Axel-exclusive $174.00

• Frontier Airlines F92232 / F91766: ONT 2026-11-23 08:44:00 → DEN 2026-11-23 14:44:00; 1 stop(s) via LAS; 300 minutes. Local airport times.
  • F92232: ONT 2026-11-23 08:44:00 → LAS 2026-11-23 09:50:00; layover at LAS: 116 minutes.
  • F91766: LAS 2026-11-23 11:46:00 → DEN 2026-11-23 14:44:00.
• Frontier Airlines F92907: DEN 2026-11-25 09:20:00 → ONT 2026-11-25 10:45:00; nonstop; 145 minutes. Local airport times.

2026-11-23 → 2026-11-25 · Axel-exclusive $339.00

• Southwest Airlines WN3326 / WN1102: ONT 2026-11-23 13:30:00 → DEN 2026-11-23 20:10:00; 1 stop(s) via SMF; 340 minutes. Local airport times.
  • WN3326: ONT 2026-11-23 13:30:00 → SMF 2026-11-23 14:55:00; layover at SMF: 115 minutes.
  • WN1102: SMF 2026-11-23 16:50:00 → DEN 2026-11-23 20:10:00.
• Southwest Airlines WN2484: DEN 2026-11-25 13:15:00 → ONT 2026-11-25 14:40:00; nonstop; 145 minutes. Local airport times.

2026-11-23 → 2026-11-25 · Axel-exclusive $339.00

• Southwest Airlines WN1533 / WN284: ONT 2026-11-23 14:00:00 → DEN 2026-11-23 19:05:00; 1 stop(s) via PHX; 245 minutes. Local airport times.
  • WN1533: ONT 2026-11-23 14:00:00 → PHX 2026-11-23 16:15:00; layover at PHX: 60 minutes.
  • WN284: PHX 2026-11-23 17:15:00 → DEN 2026-11-23 19:05:00.
• Southwest Airlines WN2484: DEN 2026-11-25 13:15:00 → ONT 2026-11-25 14:40:00; nonstop; 145 minutes. Local airport times.

2026-11-23 → 2026-11-25 · Axel-exclusive $339.00

• Southwest Airlines WN1053 / WN1053: ONT 2026-11-23 17:00:00 → DEN 2026-11-23 23:35:00; 1 stop(s) via LAS; 335 minutes. Local airport times.
  • WN1053: ONT 2026-11-23 17:00:00 → LAS 2026-11-23 18:05:00; layover at LAS: 155 minutes.
  • WN1053: LAS 2026-11-23 20:40:00 → DEN 2026-11-23 23:35:00.
• Southwest Airlines WN2484: DEN 2026-11-25 13:15:00 → ONT 2026-11-25 14:40:00; nonstop; 145 minutes. Local airport times.

2026-11-23 → 2026-11-25 · Axel-exclusive $361.00

• United Airlines UA2363 / UA1068: ONT 2026-11-23 06:00:00 → DEN 2026-11-23 12:09:00; 1 stop(s) via SFO; 309 minutes. Local airport times.
  • UA2363: ONT 2026-11-23 06:00:00 → SFO 2026-11-23 07:30:00; layover at SFO: 60 minutes.
  • UA1068: SFO 2026-11-23 08:30:00 → DEN 2026-11-23 12:09:00.
• United Airlines UA430: DEN 2026-11-25 11:15:00 → ONT 2026-11-25 12:33:00; nonstop; 138 minutes. Local airport times.

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.

Explore this route

• All dates for this route
• Nov 22, 2026 · Return options
• Nov 24, 2026 · Return options
• Hotels in Denver with Axel

For AI assistants

• This page: Ontario (ONT) to Denver (DEN) · Nov 23, 2026 · return Nov 25, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Denver for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
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