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Ontario → Austin

Dec 25, 2026 · return Dec 28, 2026

ONT → AUS1 adulteconomyRound trip

8 flight options · 3 airlines

Nonstop flights

Fri, Dec 25 – Mon, Dec 28

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

Fri, Dec 25 – Mon, Dec 28

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

Fri, Dec 25 – Mon, Dec 28

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

Round-trip total · 1 adult · Taxes included

Fri, Dec 25 – Mon, Dec 28

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

Round-trip total · 1 adult · Taxes included

Fri, Dec 25 – Mon, Dec 28

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

Fri, Dec 25 – Mon, Dec 28

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

Fri, Dec 25 – Mon, Dec 28

Southwest Airlines
9:00 amONT
2h 45m
Nonstop
1:45 pmAUS
Southwest Airlines
5:45 amAUS
5h 5m
LAS · 1h
8:50 amONT

Round-trip total · 1 adult · Taxes included

Fri, Dec 25 – Mon, Dec 28

American Airlines
9:50 amONT
5h 30m
PHX · 1h 43m
5:20 pmAUS
American Airlines
3:00 pmAUS
5h 52m
DFW · 1h 15m
6:52 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 5, 2026 → Nov 8, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Dec 5, 2026 → Dec 12, 2026Dec 17, 2026 → Dec 20, 2026Dec 26, 2026 → Jan 2, 2027Jan 5, 2027 · One wayJan 16, 2027 → Jan 23, 2027Feb 5, 2027 → Feb 8, 2027Apr 3, 2027 → Apr 10, 2027Jun 26, 2027 → Jul 3, 2027Sep 17, 2027 → Sep 20, 2027
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)
2026-12-25 → 2026-12-28Southwest AirlinesWN3298 / WN400$448.002026-10-29T01:52:33Z
2026-12-25 → 2026-12-28Frontier AirlinesF91262 + F91816 / F93645 + F91923$266.002026-10-29T01:52:33Z
2026-12-25 → 2026-12-28American AirlinesAA2198 + AA1465 / AA3885 + AA3006$490.002026-10-29T01:52:33Z
2026-12-25 → 2026-12-28Southwest AirlinesWN3298 / WN114$448.002026-10-29T01:52:33Z
2026-12-25 → 2026-12-28Southwest AirlinesWN3301 + WN1669 / WN400$434.002026-10-29T01:52:33Z
2026-12-25 → 2026-12-28Southwest AirlinesWN1053 + WN4906 / WN400$434.002026-10-29T01:52:33Z
2026-12-25 → 2026-12-28Southwest AirlinesWN3298 / WN351 + WN2401$434.002026-10-29T01:52:33Z
2026-12-25 → 2026-12-28American AirlinesAA1423 + AA1594 / AA3885 + AA3006$490.002026-10-29T01:52:33Z

2026-12-25 → 2026-12-28 · $448.00

  • Southwest Airlines WN3298: ONT 2026-12-25 12:30:00 → AUS 2026-12-25 17:15:00; nonstop; 165 minutes. Local airport times.
  • Southwest Airlines WN400: AUS 2026-12-28 17:55:00 → ONT 2026-12-28 19:00:00; nonstop; 185 minutes. Local airport times.

2026-12-25 → 2026-12-28 · $266.00

  • Frontier Airlines F91262 / F91816: ONT 2026-12-25 11:52:00 → AUS 2026-12-25 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2026-12-25 11:52:00 → DEN 2026-12-25 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2026-12-25 16:14:00 → AUS 2026-12-25 19:26:00.
  • Frontier Airlines F93645 / F91923: AUS 2026-12-28 12:38:00 → ONT 2026-12-28 16:21:00; 1 stop(s) via LAS; 343 minutes. Local airport times.
    • F93645: AUS 2026-12-28 12:38:00 → LAS 2026-12-28 13:50:00; layover at LAS: 83 minutes.
    • F91923: LAS 2026-12-28 15:13:00 → ONT 2026-12-28 16:21:00.

2026-12-25 → 2026-12-28 · $490.00

  • American Airlines AA2198 / AA1465: ONT 2026-12-25 12:51:00 → AUS 2026-12-25 20:13:00; 1 stop(s) via DFW; 322 minutes. Local airport times.
    • AA2198: ONT 2026-12-25 12:51:00 → DFW 2026-12-25 17:44:00; layover at DFW: 84 minutes.
    • AA1465: DFW 2026-12-25 19:08:00 → AUS 2026-12-25 20:13:00.
  • American Airlines AA3885 / AA3006: AUS 2026-12-28 15:00:00 → ONT 2026-12-28 18:52:00; 1 stop(s) via DFW; 352 minutes. Local airport times.
    • AA3885: AUS 2026-12-28 15:00:00 → DFW 2026-12-28 16:15:00; layover at DFW: 75 minutes.
    • AA3006: DFW 2026-12-28 17:30:00 → ONT 2026-12-28 18:52:00.

2026-12-25 → 2026-12-28 · $448.00

  • Southwest Airlines WN3298: ONT 2026-12-25 07:50:00 → AUS 2026-12-25 12:35:00; nonstop; 165 minutes. Local airport times.
  • Southwest Airlines WN114: AUS 2026-12-28 19:50:00 → ONT 2026-12-28 20:55:00; nonstop; 185 minutes. Local airport times.

2026-12-25 → 2026-12-28 · $434.00

  • Southwest Airlines WN3301 / WN1669: ONT 2026-12-25 08:45:00 → AUS 2026-12-25 16:05:00; 1 stop(s) via DEN; 320 minutes. Local airport times.
    • WN3301: ONT 2026-12-25 08:45:00 → DEN 2026-12-25 11:55:00; layover at DEN: 65 minutes.
    • WN1669: DEN 2026-12-25 13:00:00 → AUS 2026-12-25 16:05:00.
  • Southwest Airlines WN400: AUS 2026-12-28 17:55:00 → ONT 2026-12-28 19:00:00; nonstop; 185 minutes. Local airport times.

2026-12-25 → 2026-12-28 · $434.00

  • Southwest Airlines WN1053 / WN4906: ONT 2026-12-25 17:00:00 → AUS 2026-12-25 23:55:00; 1 stop(s) via LAS; 295 minutes. Local airport times.
    • WN1053: ONT 2026-12-25 17:00:00 → LAS 2026-12-25 18:05:00; layover at LAS: 70 minutes.
    • WN4906: LAS 2026-12-25 19:15:00 → AUS 2026-12-25 23:55:00.
  • Southwest Airlines WN400: AUS 2026-12-28 17:55:00 → ONT 2026-12-28 19:00:00; nonstop; 185 minutes. Local airport times.

2026-12-25 → 2026-12-28 · $434.00

  • Southwest Airlines WN3298: ONT 2026-12-25 09:00:00 → AUS 2026-12-25 13:45:00; nonstop; 165 minutes. Local airport times.
  • Southwest Airlines WN351 / WN2401: AUS 2026-12-28 05:45:00 → ONT 2026-12-28 08:50:00; 1 stop(s) via LAS; 305 minutes. Local airport times.
    • WN351: AUS 2026-12-28 05:45:00 → LAS 2026-12-28 06:40:00; layover at LAS: 60 minutes.
    • WN2401: LAS 2026-12-28 07:40:00 → ONT 2026-12-28 08:50:00.

2026-12-25 → 2026-12-28 · $490.00

  • American Airlines AA1423 / AA1594: ONT 2026-12-25 09:50:00 → AUS 2026-12-25 17:20:00; 1 stop(s) via PHX; 330 minutes. Local airport times.
    • AA1423: ONT 2026-12-25 09:50:00 → PHX 2026-12-25 12:15:00; layover at PHX: 103 minutes.
    • AA1594: PHX 2026-12-25 13:58:00 → AUS 2026-12-25 17:20:00.
  • American Airlines AA3885 / AA3006: AUS 2026-12-28 15:00:00 → ONT 2026-12-28 18:52:00; 1 stop(s) via DFW; 352 minutes. Local airport times.
    • AA3885: AUS 2026-12-28 15:00:00 → DFW 2026-12-28 16:15:00; layover at DFW: 75 minutes.
    • AA3006: DFW 2026-12-28 17:30:00 → ONT 2026-12-28 18:52:00.

More dates for this route