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Austin → Ontario

Dec 19, 2026 · return Dec 22, 2026

AUS → ONT1 adulteconomyRound trip

8 flight options · 3 airlines

Nonstop flights

Sat, Dec 19 – Tue, Dec 22

Southwest Airlines
5:55 pmAUS
3h 5m
Nonstop
7:00 pmONT
Southwest Airlines
7:50 amONT
2h 45m
Nonstop
12:35 pmAUS

Round-trip total · 1 adult · Taxes included

Sat, Dec 19 – Tue, Dec 22

Southwest Airlines
7:50 pmAUS
3h 5m
Nonstop
8:55 pmONT
Southwest Airlines
7:50 amONT
2h 45m
Nonstop
12:35 pmAUS

Round-trip total · 1 adult · Taxes included

One-stop flights

Sat, Dec 19 – Tue, Dec 22

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

Sat, Dec 19 – Tue, Dec 22

American Airlines
6:02 pmAUS
5h 50m
PHX · 1h 55m
9:52 pmONT
American Airlines
9:50 amONT
5h 30m
PHX · 1h 43m
5:20 pmAUS

Round-trip total · 1 adult · Taxes included

Sat, Dec 19 – Tue, Dec 22

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

Sat, Dec 19 – Tue, Dec 22

Southwest Airlines
2:50 pmAUS
4h 50m
PHX · 1h 5m
5:40 pmONT
Southwest Airlines
7:50 amONT
2h 45m
Nonstop
12:35 pmAUS

Round-trip total · 1 adult · Taxes included

Sat, Dec 19 – Tue, Dec 22

Southwest Airlines
5:45 amAUS
5h 5m
LAS · 1h
8:50 amONT
Southwest Airlines
7:50 amONT
2h 45m
Nonstop
12:35 pmAUS

Round-trip total · 1 adult · Taxes included

Sat, Dec 19 – Tue, Dec 22

American Airlines
3:00 pmAUS
5h 52m
DFW · 1h 15m
6:52 pmONT
American Airlines
9:50 amONT
5h 30m
PHX · 1h 43m
5:20 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)
2026-12-19 → 2026-12-22Southwest AirlinesWN400 / WN3298$453.702026-10-29T00:47:05Z
2026-12-19 → 2026-12-22Frontier AirlinesF93645 + F91923 / F91262 + F91816$245.702026-10-29T00:47:05Z
2026-12-19 → 2026-12-22American AirlinesAA1421 + AA1841 / AA1423 + AA1594$427.702026-10-29T00:47:05Z
2026-12-19 → 2026-12-22Southwest AirlinesWN114 / WN3298$453.702026-10-29T00:47:05Z
2026-12-19 → 2026-12-22Frontier AirlinesF91859 + F91261 / F91262 + F91816$245.702026-10-29T00:47:05Z
2026-12-19 → 2026-12-22Southwest AirlinesWN3470 + WN4279 / WN3298$427.702026-10-29T00:47:05Z
2026-12-19 → 2026-12-22Southwest AirlinesWN351 + WN2401 / WN3298$427.702026-10-29T00:47:05Z
2026-12-19 → 2026-12-22American AirlinesAA3885 + AA3006 / AA1423 + AA1594$427.702026-10-29T00:47:05Z

2026-12-19 → 2026-12-22 · $453.70

  • Southwest Airlines WN400: AUS 2026-12-19 17:55:00 → ONT 2026-12-19 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3298: ONT 2026-12-22 07:50:00 → AUS 2026-12-22 12:35:00; nonstop; 165 minutes. Local airport times.

2026-12-19 → 2026-12-22 · $245.70

  • Frontier Airlines F93645 / F91923: AUS 2026-12-19 12:38:00 → ONT 2026-12-19 16:21:00; 1 stop(s) via LAS; 343 minutes. Local airport times.
    • F93645: AUS 2026-12-19 12:38:00 → LAS 2026-12-19 13:50:00; layover at LAS: 83 minutes.
    • F91923: LAS 2026-12-19 15:13:00 → ONT 2026-12-19 16:21:00.
  • Frontier Airlines F91262 / F91816: ONT 2026-12-22 11:52:00 → AUS 2026-12-22 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2026-12-22 11:52:00 → DEN 2026-12-22 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2026-12-22 16:14:00 → AUS 2026-12-22 19:26:00.

2026-12-19 → 2026-12-22 · $427.70

  • American Airlines AA1421 / AA1841: AUS 2026-12-19 18:02:00 → ONT 2026-12-19 21:52:00; 1 stop(s) via PHX; 350 minutes. Local airport times.
    • AA1421: AUS 2026-12-19 18:02:00 → PHX 2026-12-19 19:40:00; layover at PHX: 115 minutes.
    • AA1841: PHX 2026-12-19 21:35:00 → ONT 2026-12-19 21:52:00.
  • American Airlines AA1423 / AA1594: ONT 2026-12-22 09:50:00 → AUS 2026-12-22 17:20:00; 1 stop(s) via PHX; 330 minutes. Local airport times.
    • AA1423: ONT 2026-12-22 09:50:00 → PHX 2026-12-22 12:15:00; layover at PHX: 103 minutes.
    • AA1594: PHX 2026-12-22 13:58:00 → AUS 2026-12-22 17:20:00.

2026-12-19 → 2026-12-22 · $453.70

  • Southwest Airlines WN114: AUS 2026-12-19 19:50:00 → ONT 2026-12-19 20:55:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3298: ONT 2026-12-22 07:50:00 → AUS 2026-12-22 12:35:00; nonstop; 165 minutes. Local airport times.

2026-12-19 → 2026-12-22 · $245.70

  • Frontier Airlines F91859 / F91261: AUS 2026-12-19 19:44:00 → ONT 2026-12-20 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2026-12-19 19:44:00 → DEN 2026-12-19 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2026-12-19 22:48:00 → ONT 2026-12-20 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2026-12-22 11:52:00 → AUS 2026-12-22 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2026-12-22 11:52:00 → DEN 2026-12-22 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2026-12-22 16:14:00 → AUS 2026-12-22 19:26:00.

2026-12-19 → 2026-12-22 · $427.70

  • Southwest Airlines WN3470 / WN4279: AUS 2026-12-19 14:50:00 → ONT 2026-12-19 17:40:00; 1 stop(s) via PHX; 290 minutes. Local airport times.
    • WN3470: AUS 2026-12-19 14:50:00 → PHX 2026-12-19 16:25:00; layover at PHX: 65 minutes.
    • WN4279: PHX 2026-12-19 17:30:00 → ONT 2026-12-19 17:40:00.
  • Southwest Airlines WN3298: ONT 2026-12-22 07:50:00 → AUS 2026-12-22 12:35:00; nonstop; 165 minutes. Local airport times.

2026-12-19 → 2026-12-22 · $427.70

  • Southwest Airlines WN351 / WN2401: AUS 2026-12-19 05:45:00 → ONT 2026-12-19 08:50:00; 1 stop(s) via LAS; 305 minutes. Local airport times.
    • WN351: AUS 2026-12-19 05:45:00 → LAS 2026-12-19 06:40:00; layover at LAS: 60 minutes.
    • WN2401: LAS 2026-12-19 07:40:00 → ONT 2026-12-19 08:50:00.
  • Southwest Airlines WN3298: ONT 2026-12-22 07:50:00 → AUS 2026-12-22 12:35:00; nonstop; 165 minutes. Local airport times.

2026-12-19 → 2026-12-22 · $427.70

  • American Airlines AA3885 / AA3006: AUS 2026-12-19 15:00:00 → ONT 2026-12-19 18:52:00; 1 stop(s) via DFW; 352 minutes. Local airport times.
    • AA3885: AUS 2026-12-19 15:00:00 → DFW 2026-12-19 16:15:00; layover at DFW: 75 minutes.
    • AA3006: DFW 2026-12-19 17:30:00 → ONT 2026-12-19 18:52:00.
  • American Airlines AA1423 / AA1594: ONT 2026-12-22 09:50:00 → AUS 2026-12-22 17:20:00; 1 stop(s) via PHX; 330 minutes. Local airport times.
    • AA1423: ONT 2026-12-22 09:50:00 → PHX 2026-12-22 12:15:00; layover at PHX: 103 minutes.
    • AA1594: PHX 2026-12-22 13:58:00 → AUS 2026-12-22 17:20:00.

More dates for this route