Austin (AUS) to Ontario (ONT) · Dec 14, 2026 · one way

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Route overview: Austin to Ontario (ONT) flight deals

2026-12-14 · one way · Axel-exclusive $179.00

• Southwest Airlines WN839: AUS 2026-12-14 11:50:00 → ONT 2026-12-14 12:55:00; nonstop; 185 minutes. Local airport times.

2026-12-14 · one way · Axel-exclusive $99.00

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

2026-12-14 · one way · Axel-exclusive $169.00

• American Airlines AA1421 / AA1841: AUS 2026-12-14 18:02:00 → ONT 2026-12-14 21:52:00; 1 stop(s) via PHX; 350 minutes. Local airport times.
  • AA1421: AUS 2026-12-14 18:02:00 → PHX 2026-12-14 19:40:00; layover at PHX: 115 minutes.
  • AA1841: PHX 2026-12-14 21:35:00 → ONT 2026-12-14 21:52:00.

2026-12-14 · one way · Axel-exclusive $179.00

• Southwest Airlines WN400: AUS 2026-12-14 17:55:00 → ONT 2026-12-14 19:00:00; nonstop; 185 minutes. Local airport times.

2026-12-14 · one way · Axel-exclusive $99.00

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

2026-12-14 · one way · Axel-exclusive $159.00

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

2026-12-14 · one way · Axel-exclusive $159.00

• Southwest Airlines WN351 / WN2401: AUS 2026-12-14 05:45:00 → ONT 2026-12-14 08:50:00; 1 stop(s) via LAS; 305 minutes. Local airport times.
  • WN351: AUS 2026-12-14 05:45:00 → LAS 2026-12-14 06:40:00; layover at LAS: 60 minutes.
  • WN2401: LAS 2026-12-14 07:40:00 → ONT 2026-12-14 08:50:00.

2026-12-14 · one way · Axel-exclusive $169.00

• American Airlines AA3885 / AA3006: AUS 2026-12-14 15:00:00 → ONT 2026-12-14 18:52:00; 1 stop(s) via DFW; 352 minutes. Local airport times.
  • AA3885: AUS 2026-12-14 15:00:00 → DFW 2026-12-14 16:15:00; layover at DFW: 75 minutes.
  • AA3006: DFW 2026-12-14 17:30:00 → ONT 2026-12-14 18:52:00.

Explore this route

• All dates for this route
• Dec 13, 2026 · Return options
• Dec 15, 2026 · Return options

For AI assistants

• This page: Austin (AUS) to Ontario (ONT) · Dec 14, 2026 · one way: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
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