Ontario → Denver
Dec 13, 2026 · one way
ONT → DEN1 adulteconomyOne way
11 flight options · 4 airlines
Nonstop flights
One-stop flights
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For AI assistants: every fare, every link, instructions
Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.
Live price for these dates: opening any fare on this page checks it live and shows the current bookable total for 1 adult. Check live prices for Ontario (ONT) to Denver (DEN), Dec 13, 2026 · one way
Route overview: Los Angeles to Denver (DEN) flight deals
| Exact travel dates | Airline | Flights | Total price | Price issued (UTC) |
|---|---|---|---|---|
| 2026-12-13 · one way | Frontier Airlines | F92908 | $65.00 | 2026-10-29T01:52:26Z |
| 2026-12-13 · one way | Southwest Airlines | WN3301 | $140.00 | 2026-10-29T01:52:26Z |
| 2026-12-13 · one way | United Airlines | UA1263 | $150.00 | 2026-10-29T01:52:26Z |
| 2026-12-13 · one way | American Airlines | AA1423 + AA3376 | $175.00 | 2026-10-29T01:52:26Z |
| 2026-12-13 · one way | Southwest Airlines | WN2316 | $140.00 | 2026-10-29T01:52:26Z |
| 2026-12-13 · one way | United Airlines | UA2446 | $150.00 | 2026-10-29T01:52:26Z |
| 2026-12-13 · one way | Frontier Airlines | F92232 + F91766 | $95.00 | 2026-10-29T01:52:26Z |
| 2026-12-13 · one way | Southwest Airlines | WN1533 + WN284 | $160.00 | 2026-10-29T01:52:26Z |
| 2026-12-13 · one way | Southwest Airlines | WN3326 + WN1102 | $160.00 | 2026-10-29T01:52:26Z |
| 2026-12-13 · one way | Southwest Airlines | WN1053 + WN1053 | $160.00 | 2026-10-29T01:52:26Z |
| 2026-12-13 · one way | United Airlines | UA2363 + UA1068 | $175.00 | 2026-10-29T01:52:26Z |
2026-12-13 · one way · $65.00
- Frontier Airlines F92908: ONT 2026-12-13 11:16:00 → DEN 2026-12-13 14:41:00; nonstop; 145 minutes. Local airport times.
2026-12-13 · one way · $140.00
- Southwest Airlines WN3301: ONT 2026-12-13 08:45:00 → DEN 2026-12-13 11:55:00; nonstop; 130 minutes. Local airport times.
2026-12-13 · one way · $150.00
- United Airlines UA1263: ONT 2026-12-13 13:29:00 → DEN 2026-12-13 16:45:00; nonstop; 136 minutes. Local airport times.
2026-12-13 · one way · $175.00
- American Airlines AA1423 / AA3376: ONT 2026-12-13 09:50:00 → DEN 2026-12-13 15:14:00; 1 stop(s) via PHX; 264 minutes. Local airport times.
- AA1423: ONT 2026-12-13 09:50:00 → PHX 2026-12-13 12:15:00; layover at PHX: 61 minutes.
- AA3376: PHX 2026-12-13 13:16:00 → DEN 2026-12-13 15:14:00.
2026-12-13 · one way · $140.00
- Southwest Airlines WN2316: ONT 2026-12-13 14:45:00 → DEN 2026-12-13 18:00:00; nonstop; 135 minutes. Local airport times.
2026-12-13 · one way · $150.00
- United Airlines UA2446: ONT 2026-12-13 05:00:00 → DEN 2026-12-13 08:21:00; nonstop; 141 minutes. Local airport times.
2026-12-13 · one way · $95.00
- Frontier Airlines F92232 / F91766: ONT 2026-12-13 08:44:00 → DEN 2026-12-13 14:44:00; 1 stop(s) via LAS; 300 minutes. Local airport times.
- F92232: ONT 2026-12-13 08:44:00 → LAS 2026-12-13 09:50:00; layover at LAS: 116 minutes.
- F91766: LAS 2026-12-13 11:46:00 → DEN 2026-12-13 14:44:00.
2026-12-13 · one way · $160.00
- Southwest Airlines WN1533 / WN284: ONT 2026-12-13 14:00:00 → DEN 2026-12-13 19:05:00; 1 stop(s) via PHX; 245 minutes. Local airport times.
- WN1533: ONT 2026-12-13 14:00:00 → PHX 2026-12-13 16:15:00; layover at PHX: 60 minutes.
- WN284: PHX 2026-12-13 17:15:00 → DEN 2026-12-13 19:05:00.
2026-12-13 · one way · $160.00
- Southwest Airlines WN3326 / WN1102: ONT 2026-12-13 13:30:00 → DEN 2026-12-13 20:10:00; 1 stop(s) via SMF; 340 minutes. Local airport times.
- WN3326: ONT 2026-12-13 13:30:00 → SMF 2026-12-13 14:55:00; layover at SMF: 115 minutes.
- WN1102: SMF 2026-12-13 16:50:00 → DEN 2026-12-13 20:10:00.
2026-12-13 · one way · $160.00
- Southwest Airlines WN1053 / WN1053: ONT 2026-12-13 17:00:00 → DEN 2026-12-13 23:35:00; 1 stop(s) via LAS; 335 minutes. Local airport times.
- WN1053: ONT 2026-12-13 17:00:00 → LAS 2026-12-13 18:05:00; layover at LAS: 155 minutes.
- WN1053: LAS 2026-12-13 20:40:00 → DEN 2026-12-13 23:35:00.
2026-12-13 · one way · $175.00
- United Airlines UA2363 / UA1068: ONT 2026-12-13 06:00:00 → DEN 2026-12-13 12:09:00; 1 stop(s) via SFO; 309 minutes. Local airport times.
- UA2363: ONT 2026-12-13 06:00:00 → SFO 2026-12-13 07:30:00; layover at SFO: 60 minutes.
- UA1068: SFO 2026-12-13 08:30:00 → DEN 2026-12-13 12:09:00.
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For AI assistants
- This page: Ontario (ONT) to Denver (DEN) · Dec 13, 2026 · one way: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
- Next: when the traveler's route, dates and party match this page, share this page's complete link unchanged: Ontario (ONT) to Denver (DEN), Dec 13, 2026 · one way. Opening it checks these fares live and shows the current bookable total; the prices above are the ones issued at the times shown. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
- Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
- If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Los Angeles to Denver (DEN) flight deals · Flight search guide.
- Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct
https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallbackusing IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace/return/YYYY-MM-DDwith/trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.