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Ontario → Austin

Dec 6, 2026 · return Dec 9, 2026

ONT → AUS1 adulteconomyRound trip

8 flight options · 3 airlines

Nonstop flights

Sun, Dec 6 – Wed, Dec 9

Southwest Airlines
12:30 pmONT
2h 45m
Nonstop
5:15 pmAUS
Southwest Airlines
5:55 pmAUS
3h 5m
Nonstop
7:00 pmONT

Round-trip total · 1 adult · Taxes included

Sun, Dec 6 – Wed, Dec 9

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

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 6 – Wed, Dec 9

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

Sun, Dec 6 – Wed, Dec 9

American Airlines
12:51 pmONT
5h 22m
DFW · 1h 24m
8:13 pmAUS
American Airlines
6:02 pmAUS
5h 50m
PHX · 1h 55m
9:52 pmONT

Round-trip total · 1 adult · Taxes included

Sun, Dec 6 – Wed, Dec 9

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

Sun, Dec 6 – Wed, Dec 9

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

Sun, Dec 6 – Wed, Dec 9

Southwest Airlines
9:00 amONT
2h 45m
Nonstop
1:45 pmAUS
Southwest Airlines
2:50 pmAUS
4h 50m
PHX · 1h 5m
5:40 pmONT

Round-trip total · 1 adult · Taxes included

Sun, Dec 6 – Wed, Dec 9

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

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
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)
2026-12-06 → 2026-12-09Southwest AirlinesWN3298 / WN400$320.002026-10-29T01:52:33Z
2026-12-06 → 2026-12-09Frontier AirlinesF91262 + F91816 / F91859 + F91261$190.002026-10-29T01:52:33Z
2026-12-06 → 2026-12-09American AirlinesAA2198 + AA1465 / AA1421 + AA1841$350.002026-10-29T01:52:33Z
2026-12-06 → 2026-12-09Southwest AirlinesWN3298 / WN114$320.002026-10-29T01:52:33Z
2026-12-06 → 2026-12-09Southwest AirlinesWN1053 + WN4906 / WN400$310.002026-10-29T01:52:33Z
2026-12-06 → 2026-12-09Southwest AirlinesWN3301 + WN1669 / WN400$310.002026-10-29T01:52:33Z
2026-12-06 → 2026-12-09Southwest AirlinesWN3298 / WN3470 + WN4279$310.002026-10-29T01:52:33Z
2026-12-06 → 2026-12-09American AirlinesAA1423 + AA1594 / AA1421 + AA1841$350.002026-10-29T01:52:33Z

2026-12-06 → 2026-12-09 · $320.00

  • Southwest Airlines WN3298: ONT 2026-12-06 12:30:00 → AUS 2026-12-06 17:15:00; nonstop; 165 minutes. Local airport times.
  • Southwest Airlines WN400: AUS 2026-12-09 17:55:00 → ONT 2026-12-09 19:00:00; nonstop; 185 minutes. Local airport times.

2026-12-06 → 2026-12-09 · $190.00

  • Frontier Airlines F91262 / F91816: ONT 2026-12-06 11:52:00 → AUS 2026-12-06 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2026-12-06 11:52:00 → DEN 2026-12-06 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2026-12-06 16:14:00 → AUS 2026-12-06 19:26:00.
  • Frontier Airlines F91859 / F91261: AUS 2026-12-09 19:44:00 → ONT 2026-12-10 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2026-12-09 19:44:00 → DEN 2026-12-09 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2026-12-09 22:48:00 → ONT 2026-12-10 00:13:00.

2026-12-06 → 2026-12-09 · $350.00

  • American Airlines AA2198 / AA1465: ONT 2026-12-06 12:51:00 → AUS 2026-12-06 20:13:00; 1 stop(s) via DFW; 322 minutes. Local airport times.
    • AA2198: ONT 2026-12-06 12:51:00 → DFW 2026-12-06 17:44:00; layover at DFW: 84 minutes.
    • AA1465: DFW 2026-12-06 19:08:00 → AUS 2026-12-06 20:13:00.
  • American Airlines AA1421 / AA1841: AUS 2026-12-09 18:02:00 → ONT 2026-12-09 21:52:00; 1 stop(s) via PHX; 350 minutes. Local airport times.
    • AA1421: AUS 2026-12-09 18:02:00 → PHX 2026-12-09 19:40:00; layover at PHX: 115 minutes.
    • AA1841: PHX 2026-12-09 21:35:00 → ONT 2026-12-09 21:52:00.

2026-12-06 → 2026-12-09 · $320.00

  • Southwest Airlines WN3298: ONT 2026-12-06 07:50:00 → AUS 2026-12-06 12:35:00; nonstop; 165 minutes. Local airport times.
  • Southwest Airlines WN114: AUS 2026-12-09 19:50:00 → ONT 2026-12-09 20:55:00; nonstop; 185 minutes. Local airport times.

2026-12-06 → 2026-12-09 · $310.00

  • Southwest Airlines WN1053 / WN4906: ONT 2026-12-06 17:00:00 → AUS 2026-12-06 23:55:00; 1 stop(s) via LAS; 295 minutes. Local airport times.
    • WN1053: ONT 2026-12-06 17:00:00 → LAS 2026-12-06 18:05:00; layover at LAS: 70 minutes.
    • WN4906: LAS 2026-12-06 19:15:00 → AUS 2026-12-06 23:55:00.
  • Southwest Airlines WN400: AUS 2026-12-09 17:55:00 → ONT 2026-12-09 19:00:00; nonstop; 185 minutes. Local airport times.

2026-12-06 → 2026-12-09 · $310.00

  • Southwest Airlines WN3301 / WN1669: ONT 2026-12-06 08:45:00 → AUS 2026-12-06 16:05:00; 1 stop(s) via DEN; 320 minutes. Local airport times.
    • WN3301: ONT 2026-12-06 08:45:00 → DEN 2026-12-06 11:55:00; layover at DEN: 65 minutes.
    • WN1669: DEN 2026-12-06 13:00:00 → AUS 2026-12-06 16:05:00.
  • Southwest Airlines WN400: AUS 2026-12-09 17:55:00 → ONT 2026-12-09 19:00:00; nonstop; 185 minutes. Local airport times.

2026-12-06 → 2026-12-09 · $310.00

  • Southwest Airlines WN3298: ONT 2026-12-06 09:00:00 → AUS 2026-12-06 13:45:00; nonstop; 165 minutes. Local airport times.
  • Southwest Airlines WN3470 / WN4279: AUS 2026-12-09 14:50:00 → ONT 2026-12-09 17:40:00; 1 stop(s) via PHX; 290 minutes. Local airport times.
    • WN3470: AUS 2026-12-09 14:50:00 → PHX 2026-12-09 16:25:00; layover at PHX: 65 minutes.
    • WN4279: PHX 2026-12-09 17:30:00 → ONT 2026-12-09 17:40:00.

2026-12-06 → 2026-12-09 · $350.00

  • American Airlines AA1423 / AA1594: ONT 2026-12-06 09:50:00 → AUS 2026-12-06 17:20:00; 1 stop(s) via PHX; 330 minutes. Local airport times.
    • AA1423: ONT 2026-12-06 09:50:00 → PHX 2026-12-06 12:15:00; layover at PHX: 103 minutes.
    • AA1594: PHX 2026-12-06 13:58:00 → AUS 2026-12-06 17:20:00.
  • American Airlines AA1421 / AA1841: AUS 2026-12-09 18:02:00 → ONT 2026-12-09 21:52:00; 1 stop(s) via PHX; 350 minutes. Local airport times.
    • AA1421: AUS 2026-12-09 18:02:00 → PHX 2026-12-09 19:40:00; layover at PHX: 115 minutes.
    • AA1841: PHX 2026-12-09 21:35:00 → ONT 2026-12-09 21:52:00.

More dates for this route