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Denver → Ontario

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DEN → ONT1 adulteconomy

36 flight options · 5 airlines

Round-trip flights

Fri, Nov 20 – Mon, Nov 23

Frontier Airlines
9:20 amDEN
2h 25m
Nonstop
10:45 amONT
Frontier Airlines
6:30 amONT
2h 21m
Nonstop
9:51 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Southwest Airlines
12:45 pmDEN
2h 20m
Nonstop
2:05 pmONT
Southwest Airlines
2:35 pmONT
2h 20m
Nonstop
5:55 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

United Airlines
11:15 amDEN
2h 18m
Nonstop
12:33 pmONT
United Airlines
1:29 pmONT
2h 16m
Nonstop
4:45 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Delta Air Lines
12:29 pmDEN
4h 53m
SLC · 1h 23m
4:22 pmONT
United Airlines
1:29 pmONT
2h 16m
Nonstop
4:45 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

American Airlines
12:06 pmDEN
5h 14m
PHX · 1h 53m
4:20 pmONT
American Airlines
9:50 amONT
4h 24m
PHX · 1h 1m
3:14 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Frontier Airlines
9:20 amDEN
2h 25m
Nonstop
10:45 amONT
Frontier Airlines
6:30 amONT
2h 21m
Nonstop
9:51 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Frontier Airlines
8:55 pmDEN
2h 22m
Nonstop
10:17 pmONT
Frontier Airlines
6:30 amONT
2h 21m
Nonstop
9:51 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Frontier Airlines
8:55 pmDEN
2h 22m
Nonstop
10:17 pmONT
Frontier Airlines
6:30 amONT
2h 21m
Nonstop
9:51 amDEN

Round-trip total · 1 adult · Taxes included

Show 16 more flights

Fri, Nov 20 – Mon, Nov 23

Southwest Airlines
8:50 amDEN
2h 20m
Nonstop
10:10 amONT
Southwest Airlines
2:35 pmONT
2h 20m
Nonstop
5:55 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

United Airlines
7:25 pmDEN
2h 26m
Nonstop
8:51 pmONT
United Airlines
1:29 pmONT
2h 16m
Nonstop
4:45 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Southwest Airlines
8:50 amDEN
2h 20m
Nonstop
10:10 amONT
Southwest Airlines
8:45 amONT
2h 10m
Nonstop
11:55 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Southwest Airlines
12:45 pmDEN
2h 20m
Nonstop
2:05 pmONT
Southwest Airlines
8:45 amONT
2h 10m
Nonstop
11:55 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

United Airlines
11:15 amDEN
2h 18m
Nonstop
12:33 pmONT
United Airlines
1:40 pmONT
2h 15m
Nonstop
4:55 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

United Airlines
7:25 pmDEN
2h 26m
Nonstop
8:51 pmONT
United Airlines
1:40 pmONT
2h 15m
Nonstop
4:55 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Frontier Airlines
1:03 pmDEN
4h 18m
LAS · 1h 2m
4:21 pmONT
Frontier Airlines
6:30 amONT
2h 21m
Nonstop
9:51 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Frontier Airlines
1:03 pmDEN
4h 18m
LAS · 1h 2m
4:21 pmONT
Frontier Airlines
6:30 amONT
2h 21m
Nonstop
9:51 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Southwest Airlines
1:15 pmDEN
2h 25m
Nonstop
2:40 pmONT
Southwest Airlines
5:00 pmONT
5h 35m
LAS · 2h 35m
11:35 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Southwest Airlines
12:40 pmDEN
4h 20m
LAS · 1h 20m
4:00 pmONT
Southwest Airlines
2:35 pmONT
2h 20m
Nonstop
5:55 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Southwest Airlines
12:15 pmDEN
5h
OAK · 1h
4:15 pmONT
Southwest Airlines
2:35 pmONT
2h 20m
Nonstop
5:55 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Southwest Airlines
6:30 pmDEN
5h 35m
PHX · 2h 20m
11:05 pmONT
Southwest Airlines
8:45 amONT
2h 10m
Nonstop
11:55 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Southwest Airlines
12:40 pmDEN
4h 20m
LAS · 1h 20m
4:00 pmONT
Southwest Airlines
8:45 amONT
2h 10m
Nonstop
11:55 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Southwest Airlines
12:15 pmDEN
5h
OAK · 1h
4:15 pmONT
Southwest Airlines
8:45 amONT
2h 10m
Nonstop
11:55 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Delta Air Lines
12:29 pmDEN
4h 53m
SLC · 1h 23m
4:22 pmONT
Southwest Airlines
8:45 amONT
2h 10m
Nonstop
11:55 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

American Airlines
12:06 pmDEN
5h 14m
PHX · 1h 53m
4:20 pmONT
American Airlines
9:50 amONT
4h 24m
PHX · 1h 1m
3:14 pmDEN

Round-trip total · 1 adult · Taxes included

One-way flights

Fri, Nov 20 · One way

Frontier Airlines
8:55 pmDEN
2h 22m
Nonstop
10:17 pmONT

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Southwest Airlines
8:50 amDEN
2h 20m
Nonstop
10:10 amONT

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

United Airlines
11:15 amDEN
2h 18m
Nonstop
12:33 pmONT

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

American Airlines
12:06 pmDEN
5h 14m
PHX · 1h 53m
4:20 pmONT

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
12:29 pmDEN
4h 53m
SLC · 1h 23m
4:22 pmONT

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Frontier Airlines
9:20 amDEN
2h 25m
Nonstop
10:45 amONT

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Southwest Airlines
12:45 pmDEN
2h 20m
Nonstop
2:05 pmONT

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

United Airlines
7:25 pmDEN
2h 26m
Nonstop
8:51 pmONT

One-way total · 1 adult · Taxes included

Show 4 more flights

Fri, Nov 20 · One way

Frontier Airlines
1:03 pmDEN
4h 18m
LAS · 1h 2m
4:21 pmONT

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Southwest Airlines
12:40 pmDEN
4h 20m
LAS · 1h 20m
4:00 pmONT

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Southwest Airlines
6:30 pmDEN
5h 35m
PHX · 2h 20m
11:05 pmONT

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Southwest Airlines
12:15 pmDEN
5h
OAK · 1h
4:15 pmONT

One-way total · 1 adult · Taxes included

Make this trip yours

DEN ⇄ ONT

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Frontier Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • 24-hour cancellationCancel within 24 hours of booking for a full refund when your departure is at least 7 days away. Closer to departure, the airline’s fare rules apply. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

Nov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
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.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-11-20 · one wayFrontier AirlinesF91499$85.002026-10-29T01:04:33Z
2026-11-20 · one waySouthwest AirlinesWN2263$135.002026-10-29T01:04:33Z
2026-11-20 · one wayUnited AirlinesUA430$145.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23Frontier AirlinesF92907 / F91500$165.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23Southwest AirlinesWN2484 / WN2316$260.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23United AirlinesUA430 / UA1263$280.002026-10-29T01:04:33Z
2026-11-20 · one wayAmerican AirlinesAA2447 + AA4144$165.002026-10-29T01:04:33Z
2026-11-20 · one wayDelta Air LinesDL1553 + DL3879$175.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23Delta Air Lines / United AirlinesDL1553 + DL3879 / UA1263$310.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23American AirlinesAA2447 + AA4144 / AA1423 + AA3376$320.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04Frontier AirlinesF92907 / F91500$198.002026-10-29T01:04:33Z
2026-11-20 · one wayFrontier AirlinesF92907$85.002026-10-29T01:04:33Z
2026-11-20 · one waySouthwest AirlinesWN2484$135.002026-10-29T01:04:33Z
2026-11-20 · one wayUnited AirlinesUA2028$145.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23Frontier AirlinesF91499 / F91500$165.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04Frontier AirlinesF91499 / F91500$198.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23Southwest AirlinesWN2263 / WN2316$260.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23United AirlinesUA2028 / UA1263$280.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04Southwest AirlinesWN2263 / WN3301$312.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04Southwest AirlinesWN2484 / WN3301$312.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04United AirlinesUA430 / UA1263$336.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04United AirlinesUA2028 / UA1263$336.002026-10-29T01:04:33Z
2026-11-20 · one wayFrontier AirlinesF94967 + F91923$100.002026-10-29T01:04:33Z
2026-11-20 · one waySouthwest AirlinesWN406 + WN2403$150.002026-10-29T01:04:33Z
2026-11-20 · one waySouthwest AirlinesWN262 + WN3481$150.002026-10-29T01:04:33Z
2026-11-20 · one waySouthwest AirlinesWN3763 + WN1053$150.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23Frontier AirlinesF94967 + F91923 / F91500$180.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04Frontier AirlinesF94967 + F91923 / F91500$219.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23Southwest AirlinesWN2484 / WN1053 + WN1053$275.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23Southwest AirlinesWN406 + WN2403 / WN2316$275.002026-10-29T01:04:33Z
2026-11-20 → 2026-11-23Southwest AirlinesWN3763 + WN1053 / WN2316$275.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04Southwest AirlinesWN262 + WN3481 / WN3301$333.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04Southwest AirlinesWN406 + WN2403 / WN3301$333.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04Southwest AirlinesWN3763 + WN1053 / WN3301$333.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04Delta Air Lines / Southwest AirlinesDL1553 + DL3879 / WN3301$368.002026-10-29T01:04:33Z
2026-11-27 → 2026-12-04American AirlinesAA2447 + AA4144 / AA1423 + AA3376$384.002026-10-29T01:04:33Z

2026-11-20 · one way · $85.00

  • Frontier Airlines F91499: DEN 2026-11-20 20:55:00 → ONT 2026-11-20 22:17:00; nonstop; 142 minutes. Local airport times.

2026-11-20 · one way · $135.00

  • Southwest Airlines WN2263: DEN 2026-11-20 08:50:00 → ONT 2026-11-20 10:10:00; nonstop; 140 minutes. Local airport times.

2026-11-20 · one way · $145.00

  • United Airlines UA430: DEN 2026-11-20 11:15:00 → ONT 2026-11-20 12:33:00; nonstop; 138 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $165.00

  • Frontier Airlines F92907: DEN 2026-11-20 09:20:00 → ONT 2026-11-20 10:45:00; nonstop; 145 minutes. Local airport times.
  • Frontier Airlines F91500: ONT 2026-11-23 06:30:00 → DEN 2026-11-23 09:51:00; nonstop; 141 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $260.00

  • Southwest Airlines WN2484: DEN 2026-11-20 12:45:00 → ONT 2026-11-20 14:05:00; nonstop; 140 minutes. Local airport times.
  • Southwest Airlines WN2316: ONT 2026-11-23 14:35:00 → DEN 2026-11-23 17:55:00; nonstop; 140 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $280.00

  • United Airlines UA430: DEN 2026-11-20 11:15:00 → ONT 2026-11-20 12:33:00; nonstop; 138 minutes. Local airport times.
  • United Airlines UA1263: ONT 2026-11-23 13:29:00 → DEN 2026-11-23 16:45:00; nonstop; 136 minutes. Local airport times.

2026-11-20 · one way · $165.00

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

2026-11-20 · one way · $175.00

  • Delta Air Lines DL1553 / DL3879: DEN 2026-11-20 12:29:00 → ONT 2026-11-20 16:22:00; 1 stop(s) via SLC; 293 minutes. Local airport times.
    • DL1553: DEN 2026-11-20 12:29:00 → SLC 2026-11-20 14:06:00; layover at SLC: 83 minutes.
    • DL3879: SLC 2026-11-20 15:29:00 → ONT 2026-11-20 16:22:00.

2026-11-20 → 2026-11-23 · $310.00

  • Delta Air Lines DL1553 / DL3879: DEN 2026-11-20 12:29:00 → ONT 2026-11-20 16:22:00; 1 stop(s) via SLC; 293 minutes. Local airport times.
    • DL1553: DEN 2026-11-20 12:29:00 → SLC 2026-11-20 14:06:00; layover at SLC: 83 minutes.
    • DL3879: SLC 2026-11-20 15:29:00 → ONT 2026-11-20 16:22:00.
  • United Airlines UA1263: ONT 2026-11-23 13:29:00 → DEN 2026-11-23 16:45:00; nonstop; 136 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $320.00

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

2026-11-27 → 2026-12-04 · $198.00

  • Frontier Airlines F92907: DEN 2026-11-27 09:20:00 → ONT 2026-11-27 10:45:00; nonstop; 145 minutes. Local airport times.
  • Frontier Airlines F91500: ONT 2026-12-04 06:30:00 → DEN 2026-12-04 09:51:00; nonstop; 141 minutes. Local airport times.

2026-11-20 · one way · $85.00

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

2026-11-20 · one way · $135.00

  • Southwest Airlines WN2484: DEN 2026-11-20 12:45:00 → ONT 2026-11-20 14:05:00; nonstop; 140 minutes. Local airport times.

2026-11-20 · one way · $145.00

  • United Airlines UA2028: DEN 2026-11-20 19:25:00 → ONT 2026-11-20 20:51:00; nonstop; 146 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $165.00

  • Frontier Airlines F91499: DEN 2026-11-20 20:55:00 → ONT 2026-11-20 22:17:00; nonstop; 142 minutes. Local airport times.
  • Frontier Airlines F91500: ONT 2026-11-23 06:30:00 → DEN 2026-11-23 09:51:00; nonstop; 141 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $198.00

  • Frontier Airlines F91499: DEN 2026-11-27 20:55:00 → ONT 2026-11-27 22:17:00; nonstop; 142 minutes. Local airport times.
  • Frontier Airlines F91500: ONT 2026-12-04 06:30:00 → DEN 2026-12-04 09:51:00; nonstop; 141 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $260.00

  • Southwest Airlines WN2263: DEN 2026-11-20 08:50:00 → ONT 2026-11-20 10:10:00; nonstop; 140 minutes. Local airport times.
  • Southwest Airlines WN2316: ONT 2026-11-23 14:35:00 → DEN 2026-11-23 17:55:00; nonstop; 140 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $280.00

  • United Airlines UA2028: DEN 2026-11-20 19:25:00 → ONT 2026-11-20 20:51:00; nonstop; 146 minutes. Local airport times.
  • United Airlines UA1263: ONT 2026-11-23 13:29:00 → DEN 2026-11-23 16:45:00; nonstop; 136 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $312.00

  • Southwest Airlines WN2263: DEN 2026-11-27 08:50:00 → ONT 2026-11-27 10:10:00; nonstop; 140 minutes. Local airport times.
  • Southwest Airlines WN3301: ONT 2026-12-04 08:45:00 → DEN 2026-12-04 11:55:00; nonstop; 130 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $312.00

  • Southwest Airlines WN2484: DEN 2026-11-27 12:45:00 → ONT 2026-11-27 14:05:00; nonstop; 140 minutes. Local airport times.
  • Southwest Airlines WN3301: ONT 2026-12-04 08:45:00 → DEN 2026-12-04 11:55:00; nonstop; 130 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $336.00

  • United Airlines UA430: DEN 2026-11-27 11:15:00 → ONT 2026-11-27 12:33:00; nonstop; 138 minutes. Local airport times.
  • United Airlines UA1263: ONT 2026-12-04 13:40:00 → DEN 2026-12-04 16:55:00; nonstop; 135 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $336.00

  • United Airlines UA2028: DEN 2026-11-27 19:25:00 → ONT 2026-11-27 20:51:00; nonstop; 146 minutes. Local airport times.
  • United Airlines UA1263: ONT 2026-12-04 13:40:00 → DEN 2026-12-04 16:55:00; nonstop; 135 minutes. Local airport times.

2026-11-20 · one way · $100.00

  • Frontier Airlines F94967 / F91923: DEN 2026-11-20 13:03:00 → ONT 2026-11-20 16:21:00; 1 stop(s) via LAS; 258 minutes. Local airport times.
    • F94967: DEN 2026-11-20 13:03:00 → LAS 2026-11-20 14:11:00; layover at LAS: 62 minutes.
    • F91923: LAS 2026-11-20 15:13:00 → ONT 2026-11-20 16:21:00.

2026-11-20 · one way · $150.00

  • Southwest Airlines WN406 / WN2403: DEN 2026-11-20 12:40:00 → ONT 2026-11-20 16:00:00; 1 stop(s) via LAS; 260 minutes. Local airport times.
    • WN406: DEN 2026-11-20 12:40:00 → LAS 2026-11-20 13:40:00; layover at LAS: 80 minutes.
    • WN2403: LAS 2026-11-20 15:00:00 → ONT 2026-11-20 16:00:00.

2026-11-20 · one way · $150.00

  • Southwest Airlines WN262 / WN3481: DEN 2026-11-20 18:30:00 → ONT 2026-11-20 23:05:00; 1 stop(s) via PHX; 335 minutes. Local airport times.
    • WN262: DEN 2026-11-20 18:30:00 → PHX 2026-11-20 20:25:00; layover at PHX: 140 minutes.
    • WN3481: PHX 2026-11-20 22:45:00 → ONT 2026-11-20 23:05:00.

2026-11-20 · one way · $150.00

  • Southwest Airlines WN3763 / WN1053: DEN 2026-11-20 12:15:00 → ONT 2026-11-20 16:15:00; 1 stop(s) via OAK; 300 minutes. Local airport times.
    • WN3763: DEN 2026-11-20 12:15:00 → OAK 2026-11-20 14:00:00; layover at OAK: 60 minutes.
    • WN1053: OAK 2026-11-20 15:00:00 → ONT 2026-11-20 16:15:00.

2026-11-20 → 2026-11-23 · $180.00

  • Frontier Airlines F94967 / F91923: DEN 2026-11-20 13:03:00 → ONT 2026-11-20 16:21:00; 1 stop(s) via LAS; 258 minutes. Local airport times.
    • F94967: DEN 2026-11-20 13:03:00 → LAS 2026-11-20 14:11:00; layover at LAS: 62 minutes.
    • F91923: LAS 2026-11-20 15:13:00 → ONT 2026-11-20 16:21:00.
  • Frontier Airlines F91500: ONT 2026-11-23 06:30:00 → DEN 2026-11-23 09:51:00; nonstop; 141 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $219.00

  • Frontier Airlines F94967 / F91923: DEN 2026-11-27 13:03:00 → ONT 2026-11-27 16:21:00; 1 stop(s) via LAS; 258 minutes. Local airport times.
    • F94967: DEN 2026-11-27 13:03:00 → LAS 2026-11-27 14:11:00; layover at LAS: 62 minutes.
    • F91923: LAS 2026-11-27 15:13:00 → ONT 2026-11-27 16:21:00.
  • Frontier Airlines F91500: ONT 2026-12-04 06:30:00 → DEN 2026-12-04 09:51:00; nonstop; 141 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $275.00

  • Southwest Airlines WN2484: DEN 2026-11-20 13:15:00 → ONT 2026-11-20 14:40:00; nonstop; 145 minutes. Local airport times.
  • 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.

2026-11-20 → 2026-11-23 · $275.00

  • Southwest Airlines WN406 / WN2403: DEN 2026-11-20 12:40:00 → ONT 2026-11-20 16:00:00; 1 stop(s) via LAS; 260 minutes. Local airport times.
    • WN406: DEN 2026-11-20 12:40:00 → LAS 2026-11-20 13:40:00; layover at LAS: 80 minutes.
    • WN2403: LAS 2026-11-20 15:00:00 → ONT 2026-11-20 16:00:00.
  • Southwest Airlines WN2316: ONT 2026-11-23 14:35:00 → DEN 2026-11-23 17:55:00; nonstop; 140 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $275.00

  • Southwest Airlines WN3763 / WN1053: DEN 2026-11-20 12:15:00 → ONT 2026-11-20 16:15:00; 1 stop(s) via OAK; 300 minutes. Local airport times.
    • WN3763: DEN 2026-11-20 12:15:00 → OAK 2026-11-20 14:00:00; layover at OAK: 60 minutes.
    • WN1053: OAK 2026-11-20 15:00:00 → ONT 2026-11-20 16:15:00.
  • Southwest Airlines WN2316: ONT 2026-11-23 14:35:00 → DEN 2026-11-23 17:55:00; nonstop; 140 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $333.00

  • Southwest Airlines WN262 / WN3481: DEN 2026-11-27 18:30:00 → ONT 2026-11-27 23:05:00; 1 stop(s) via PHX; 335 minutes. Local airport times.
    • WN262: DEN 2026-11-27 18:30:00 → PHX 2026-11-27 20:25:00; layover at PHX: 140 minutes.
    • WN3481: PHX 2026-11-27 22:45:00 → ONT 2026-11-27 23:05:00.
  • Southwest Airlines WN3301: ONT 2026-12-04 08:45:00 → DEN 2026-12-04 11:55:00; nonstop; 130 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $333.00

  • Southwest Airlines WN406 / WN2403: DEN 2026-11-27 12:40:00 → ONT 2026-11-27 16:00:00; 1 stop(s) via LAS; 260 minutes. Local airport times.
    • WN406: DEN 2026-11-27 12:40:00 → LAS 2026-11-27 13:40:00; layover at LAS: 80 minutes.
    • WN2403: LAS 2026-11-27 15:00:00 → ONT 2026-11-27 16:00:00.
  • Southwest Airlines WN3301: ONT 2026-12-04 08:45:00 → DEN 2026-12-04 11:55:00; nonstop; 130 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $333.00

  • Southwest Airlines WN3763 / WN1053: DEN 2026-11-27 12:15:00 → ONT 2026-11-27 16:15:00; 1 stop(s) via OAK; 300 minutes. Local airport times.
    • WN3763: DEN 2026-11-27 12:15:00 → OAK 2026-11-27 14:00:00; layover at OAK: 60 minutes.
    • WN1053: OAK 2026-11-27 15:00:00 → ONT 2026-11-27 16:15:00.
  • Southwest Airlines WN3301: ONT 2026-12-04 08:45:00 → DEN 2026-12-04 11:55:00; nonstop; 130 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $368.00

  • Delta Air Lines DL1553 / DL3879: DEN 2026-11-27 12:29:00 → ONT 2026-11-27 16:22:00; 1 stop(s) via SLC; 293 minutes. Local airport times.
    • DL1553: DEN 2026-11-27 12:29:00 → SLC 2026-11-27 14:06:00; layover at SLC: 83 minutes.
    • DL3879: SLC 2026-11-27 15:29:00 → ONT 2026-11-27 16:22:00.
  • Southwest Airlines WN3301: ONT 2026-12-04 08:45:00 → DEN 2026-12-04 11:55:00; nonstop; 130 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $384.00

  • American Airlines AA2447 / AA4144: DEN 2026-11-27 12:06:00 → ONT 2026-11-27 16:20:00; 1 stop(s) via PHX; 314 minutes. Local airport times.
    • AA2447: DEN 2026-11-27 12:06:00 → PHX 2026-11-27 14:03:00; layover at PHX: 113 minutes.
    • AA4144: PHX 2026-11-27 15:56:00 → ONT 2026-11-27 16:20:00.
  • American Airlines AA1423 / AA3376: ONT 2026-12-04 09:50:00 → DEN 2026-12-04 15:14:00; 1 stop(s) via PHX; 264 minutes. Local airport times.
    • AA1423: ONT 2026-12-04 09:50:00 → PHX 2026-12-04 12:15:00; layover at PHX: 61 minutes.
    • AA3376: PHX 2026-12-04 13:16:00 → DEN 2026-12-04 15:14:00.

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