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Ontario → Austin

Dec 1, 2026 · return Dec 2, 2026

ONT → AUS1 adulteconomyRound trip

7 flight options · 4 airlines

Nonstop flights

Tue, Dec 1 – Wed, Dec 2

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

Round-trip total · 1 adult · Taxes included

One-stop flights

Tue, Dec 1 – Wed, Dec 2

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

Round-trip total · 1 adult · Taxes included

Tue, Dec 1 – Wed, Dec 2

United Airlines
6:00 amONT
6h 20m
SFO · 1h
2:20 pmAUS
Southwest Airlines
5:55 pmAUS
3h 5m
Nonstop
7:00 pmONT

Round-trip total · 1 adult · Taxes included

Tue, Dec 1 – Wed, Dec 2

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

Round-trip total · 1 adult · Taxes included

Tue, Dec 1 – Wed, Dec 2

Southwest Airlines
5:00 pmONT
4h 55m
LAS · 1h 10m
11:55 pmAUS
Southwest Airlines
5:55 pmAUS
3h 5m
Nonstop
7:00 pmONT

Round-trip total · 1 adult · Taxes included

Tue, Dec 1 – Wed, Dec 2

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

Round-trip total · 1 adult · Taxes included

Tue, Dec 1 – Wed, Dec 2

Southwest Airlines
12:30 pmONT
2h 45m
Nonstop
5:15 pmAUS
Southwest Airlines
2:50 pmAUS
4h 50m
PHX · 1h 5m
5:40 pmONT

Round-trip total · 1 adult · Taxes included

Make this trip yours

ONT ⇄ AUS

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
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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)
2026-12-01 → 2026-12-02Southwest AirlinesWN3298 / WN400$320.002026-10-29T01:52:33Z
2026-12-01 → 2026-12-02Frontier AirlinesF91262 + F91816 / F91859 + F91261$190.002026-10-29T01:52:33Z
2026-12-01 → 2026-12-02United Airlines / Southwest AirlinesUA2363 + UA5803 / WN400$345.002026-10-29T01:52:33Z
2026-12-01 → 2026-12-02American AirlinesAA1423 + AA1594 / AA1421 + AA1841$350.002026-10-29T01:52:33Z
2026-12-01 → 2026-12-02Southwest AirlinesWN1053 + WN4906 / WN400$310.002026-10-29T01:52:33Z
2026-12-01 → 2026-12-02Southwest AirlinesWN3301 + WN1669 / WN400$310.002026-10-29T01:52:33Z
2026-12-01 → 2026-12-02Southwest AirlinesWN3298 / WN3470 + WN4279$310.002026-10-29T01:52:33Z

2026-12-01 → 2026-12-02 · $320.00

  • Southwest Airlines WN3298: ONT 2026-12-01 07:50:00 → AUS 2026-12-01 12:35:00; nonstop; 165 minutes. Local airport times.
  • Southwest Airlines WN400: AUS 2026-12-02 17:55:00 → ONT 2026-12-02 19:00:00; nonstop; 185 minutes. Local airport times.

2026-12-01 → 2026-12-02 · $190.00

  • Frontier Airlines F91262 / F91816: ONT 2026-12-01 11:52:00 → AUS 2026-12-01 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2026-12-01 11:52:00 → DEN 2026-12-01 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2026-12-01 16:14:00 → AUS 2026-12-01 19:26:00.
  • Frontier Airlines F91859 / F91261: AUS 2026-12-02 19:44:00 → ONT 2026-12-03 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2026-12-02 19:44:00 → DEN 2026-12-02 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2026-12-02 22:48:00 → ONT 2026-12-03 00:13:00.

2026-12-01 → 2026-12-02 · $345.00

  • United Airlines UA2363 / UA5803: ONT 2026-12-01 06:00:00 → AUS 2026-12-01 14:20:00; 1 stop(s) via SFO; 380 minutes. Local airport times.
    • UA2363: ONT 2026-12-01 06:00:00 → SFO 2026-12-01 07:30:00; layover at SFO: 60 minutes.
    • UA5803: SFO 2026-12-01 08:30:00 → AUS 2026-12-01 14:20:00.
  • Southwest Airlines WN400: AUS 2026-12-02 17:55:00 → ONT 2026-12-02 19:00:00; nonstop; 185 minutes. Local airport times.

2026-12-01 → 2026-12-02 · $350.00

  • American Airlines AA1423 / AA1594: ONT 2026-12-01 09:50:00 → AUS 2026-12-01 17:20:00; 1 stop(s) via PHX; 330 minutes. Local airport times.
    • AA1423: ONT 2026-12-01 09:50:00 → PHX 2026-12-01 12:15:00; layover at PHX: 103 minutes.
    • AA1594: PHX 2026-12-01 13:58:00 → AUS 2026-12-01 17:20:00.
  • American Airlines AA1421 / AA1841: AUS 2026-12-02 18:02:00 → ONT 2026-12-02 21:52:00; 1 stop(s) via PHX; 350 minutes. Local airport times.
    • AA1421: AUS 2026-12-02 18:02:00 → PHX 2026-12-02 19:40:00; layover at PHX: 115 minutes.
    • AA1841: PHX 2026-12-02 21:35:00 → ONT 2026-12-02 21:52:00.

2026-12-01 → 2026-12-02 · $310.00

  • Southwest Airlines WN1053 / WN4906: ONT 2026-12-01 17:00:00 → AUS 2026-12-01 23:55:00; 1 stop(s) via LAS; 295 minutes. Local airport times.
    • WN1053: ONT 2026-12-01 17:00:00 → LAS 2026-12-01 18:05:00; layover at LAS: 70 minutes.
    • WN4906: LAS 2026-12-01 19:15:00 → AUS 2026-12-01 23:55:00.
  • Southwest Airlines WN400: AUS 2026-12-02 17:55:00 → ONT 2026-12-02 19:00:00; nonstop; 185 minutes. Local airport times.

2026-12-01 → 2026-12-02 · $310.00

  • Southwest Airlines WN3301 / WN1669: ONT 2026-12-01 08:45:00 → AUS 2026-12-01 16:05:00; 1 stop(s) via DEN; 320 minutes. Local airport times.
    • WN3301: ONT 2026-12-01 08:45:00 → DEN 2026-12-01 11:55:00; layover at DEN: 65 minutes.
    • WN1669: DEN 2026-12-01 13:00:00 → AUS 2026-12-01 16:05:00.
  • Southwest Airlines WN400: AUS 2026-12-02 17:55:00 → ONT 2026-12-02 19:00:00; nonstop; 185 minutes. Local airport times.

2026-12-01 → 2026-12-02 · $310.00

  • Southwest Airlines WN3298: ONT 2026-12-01 12:30:00 → AUS 2026-12-01 17:15:00; nonstop; 165 minutes. Local airport times.
  • Southwest Airlines WN3470 / WN4279: AUS 2026-12-02 14:50:00 → ONT 2026-12-02 17:40:00; 1 stop(s) via PHX; 290 minutes. Local airport times.
    • WN3470: AUS 2026-12-02 14:50:00 → PHX 2026-12-02 16:25:00; layover at PHX: 65 minutes.
    • WN4279: PHX 2026-12-02 17:30:00 → ONT 2026-12-02 17:40:00.

More dates for this route