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Austin → Ontario

Dec 21, 2026 · return Dec 26, 2026

AUS → ONT1 adulteconomyRound trip

6 flight options · 3 airlines

One-stop flights

Mon, Dec 21 – Sat, Dec 26

Frontier Airlines
7:44 pmAUS
6h 29m
DEN · 1h 35m
12:13 am+1ONT
Frontier Airlines
11:52 amONT
5h 34m
DEN · 1h 1m
7:26 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Southwest Airlines
5:45 amAUS
5h 5m
LAS · 1h
8:50 amONT
Southwest Airlines
8:45 amONT
5h 20m
DEN · 1h 5m
4:05 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

American Airlines
3:00 pmAUS
5h 52m
DFW · 1h 15m
6:52 pmONT
American Airlines
12:51 pmONT
5h 22m
DFW · 1h 24m
8:13 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Frontier Airlines
12:38 pmAUS
5h 43m
LAS · 1h 23m
4:21 pmONT
Frontier Airlines
11:52 amONT
5h 34m
DEN · 1h 1m
7:26 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Southwest Airlines
2:50 pmAUS
4h 50m
PHX · 1h 5m
5:40 pmONT
Southwest Airlines
8:45 amONT
5h 20m
DEN · 1h 5m
4:05 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Southwest Airlines
5:55 pmAUS
3h 5m
Nonstop
7:00 pmONT
Southwest Airlines
8:45 amONT
5h 20m
DEN · 1h 5m
4:05 pmAUS

Round-trip total · 1 adult · Taxes included

Make this trip yours

AUS ⇄ ONT

Economy

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

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More dates

All dates for this routeNov 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)
2026-12-21 → 2026-12-26Frontier AirlinesF91859 + F91261 / F91262 + F91816$245.702026-10-29T00:47:05Z
2026-12-21 → 2026-12-26Southwest AirlinesWN351 + WN2401 / WN3301 + WN1669$401.702026-10-29T00:47:05Z
2026-12-21 → 2026-12-26American AirlinesAA3885 + AA3006 / AA2198 + AA1465$427.702026-10-29T00:47:05Z
2026-12-21 → 2026-12-26Frontier AirlinesF93645 + F91923 / F91262 + F91816$245.702026-10-29T00:47:05Z
2026-12-21 → 2026-12-26Southwest AirlinesWN3470 + WN4279 / WN3301 + WN1669$401.702026-10-29T00:47:05Z
2026-12-21 → 2026-12-26Southwest AirlinesWN400 / WN3301 + WN1669$427.702026-10-29T00:47:05Z

2026-12-21 → 2026-12-26 · $245.70

  • Frontier Airlines F91859 / F91261: AUS 2026-12-21 19:44:00 → ONT 2026-12-22 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2026-12-21 19:44:00 → DEN 2026-12-21 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2026-12-21 22:48:00 → ONT 2026-12-22 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2026-12-26 11:52:00 → AUS 2026-12-26 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2026-12-26 11:52:00 → DEN 2026-12-26 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2026-12-26 16:14:00 → AUS 2026-12-26 19:26:00.

2026-12-21 → 2026-12-26 · $401.70

  • Southwest Airlines WN351 / WN2401: AUS 2026-12-21 05:45:00 → ONT 2026-12-21 08:50:00; 1 stop(s) via LAS; 305 minutes. Local airport times.
    • WN351: AUS 2026-12-21 05:45:00 → LAS 2026-12-21 06:40:00; layover at LAS: 60 minutes.
    • WN2401: LAS 2026-12-21 07:40:00 → ONT 2026-12-21 08:50:00.
  • Southwest Airlines WN3301 / WN1669: ONT 2026-12-26 08:45:00 → AUS 2026-12-26 16:05:00; 1 stop(s) via DEN; 320 minutes. Local airport times.
    • WN3301: ONT 2026-12-26 08:45:00 → DEN 2026-12-26 11:55:00; layover at DEN: 65 minutes.
    • WN1669: DEN 2026-12-26 13:00:00 → AUS 2026-12-26 16:05:00.

2026-12-21 → 2026-12-26 · $427.70

  • American Airlines AA3885 / AA3006: AUS 2026-12-21 15:00:00 → ONT 2026-12-21 18:52:00; 1 stop(s) via DFW; 352 minutes. Local airport times.
    • AA3885: AUS 2026-12-21 15:00:00 → DFW 2026-12-21 16:15:00; layover at DFW: 75 minutes.
    • AA3006: DFW 2026-12-21 17:30:00 → ONT 2026-12-21 18:52:00.
  • American Airlines AA2198 / AA1465: ONT 2026-12-26 12:51:00 → AUS 2026-12-26 20:13:00; 1 stop(s) via DFW; 322 minutes. Local airport times.
    • AA2198: ONT 2026-12-26 12:51:00 → DFW 2026-12-26 17:44:00; layover at DFW: 84 minutes.
    • AA1465: DFW 2026-12-26 19:08:00 → AUS 2026-12-26 20:13:00.

2026-12-21 → 2026-12-26 · $245.70

  • Frontier Airlines F93645 / F91923: AUS 2026-12-21 12:38:00 → ONT 2026-12-21 16:21:00; 1 stop(s) via LAS; 343 minutes. Local airport times.
    • F93645: AUS 2026-12-21 12:38:00 → LAS 2026-12-21 13:50:00; layover at LAS: 83 minutes.
    • F91923: LAS 2026-12-21 15:13:00 → ONT 2026-12-21 16:21:00.
  • Frontier Airlines F91262 / F91816: ONT 2026-12-26 11:52:00 → AUS 2026-12-26 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2026-12-26 11:52:00 → DEN 2026-12-26 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2026-12-26 16:14:00 → AUS 2026-12-26 19:26:00.

2026-12-21 → 2026-12-26 · $401.70

  • Southwest Airlines WN3470 / WN4279: AUS 2026-12-21 14:50:00 → ONT 2026-12-21 17:40:00; 1 stop(s) via PHX; 290 minutes. Local airport times.
    • WN3470: AUS 2026-12-21 14:50:00 → PHX 2026-12-21 16:25:00; layover at PHX: 65 minutes.
    • WN4279: PHX 2026-12-21 17:30:00 → ONT 2026-12-21 17:40:00.
  • Southwest Airlines WN3301 / WN1669: ONT 2026-12-26 08:45:00 → AUS 2026-12-26 16:05:00; 1 stop(s) via DEN; 320 minutes. Local airport times.
    • WN3301: ONT 2026-12-26 08:45:00 → DEN 2026-12-26 11:55:00; layover at DEN: 65 minutes.
    • WN1669: DEN 2026-12-26 13:00:00 → AUS 2026-12-26 16:05:00.

2026-12-21 → 2026-12-26 · $427.70

  • Southwest Airlines WN400: AUS 2026-12-21 17:55:00 → ONT 2026-12-21 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3301 / WN1669: ONT 2026-12-26 08:45:00 → AUS 2026-12-26 16:05:00; 1 stop(s) via DEN; 320 minutes. Local airport times.
    • WN3301: ONT 2026-12-26 08:45:00 → DEN 2026-12-26 11:55:00; layover at DEN: 65 minutes.
    • WN1669: DEN 2026-12-26 13:00:00 → AUS 2026-12-26 16:05:00.

More dates for this route