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Route overview: Austin to Ontario (ONT) flight deals

Austin → Ontario

Jun 23, 2027 · choose your return date

AUS → ONT1 adulteconomyOne way and round trips

30 flight options · 3 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

June 2027

Jun 23, 2027 · One wayFrontier AirlinesUp to 1 stop each way$129.00 Jun 23, 2027 · One waySouthwest AirlinesNonstop$209.00 Jun 23, 2027 – Jun 24, 2027 · 1 nightFrontier AirlinesUp to 1 stop each way$249.00 Jun 23, 2027 – Jun 24, 2027 · 1 nightSouthwest AirlinesNonstop$409.00 Jun 23, 2027 – Jun 25, 2027 · 2 nightsFrontier AirlinesUp to 1 stop each way$249.00 Jun 23, 2027 – Jun 25, 2027 · 2 nightsSouthwest AirlinesNonstop$409.00 Jun 23, 2027 – Jun 26, 2027 · 3 nightsFrontier AirlinesUp to 1 stop each way$249.00 Jun 23, 2027 – Jun 26, 2027 · 3 nightsAmerican AirlinesUp to 1 stop each way$389.00 Jun 23, 2027 – Jun 27, 2027 · 4 nightsFrontier AirlinesUp to 1 stop each way$249.00 Jun 23, 2027 – Jun 27, 2027 · 4 nightsSouthwest AirlinesNonstop$409.00 Jun 23, 2027 – Jun 28, 2027 · 5 nightsFrontier AirlinesUp to 1 stop each way$249.00 Jun 23, 2027 – Jun 28, 2027 · 5 nightsSouthwest AirlinesNonstop$409.00 Jun 23, 2027 – Jun 29, 2027 · 6 nightsFrontier AirlinesUp to 1 stop each way$249.00 Jun 23, 2027 – Jun 29, 2027 · 6 nightsSouthwest AirlinesNonstop$409.00 Jun 23, 2027 – Jun 30, 2027 · 7 nightsFrontier AirlinesUp to 1 stop each way$249.00 Jun 23, 2027 – Jun 30, 2027 · 7 nightsSouthwest AirlinesNonstop$409.00 Jun 23, 2027 – Jul 1, 2027 · 8 nightsFrontier AirlinesUp to 1 stop each way$273.90 Jun 23, 2027 – Jul 1, 2027 · 8 nightsSouthwest AirlinesNonstop$449.90 Jun 23, 2027 – Jul 2, 2027 · 9 nightsFrontier AirlinesUp to 1 stop each way$273.90 Jun 23, 2027 – Jul 2, 2027 · 9 nightsSouthwest AirlinesNonstop$449.90 Jun 23, 2027 – Jul 3, 2027 · 10 nightsFrontier AirlinesUp to 1 stop each way$273.90 Jun 23, 2027 – Jul 3, 2027 · 10 nightsSouthwest AirlinesUp to 1 stop each way$425.90 Jun 23, 2027 – Jul 4, 2027 · 11 nightsFrontier AirlinesUp to 1 stop each way$273.90 Jun 23, 2027 – Jul 4, 2027 · 11 nightsSouthwest AirlinesNonstop$449.90 Jun 23, 2027 – Jul 5, 2027 · 12 nightsFrontier AirlinesUp to 1 stop each way$273.90 Jun 23, 2027 – Jul 5, 2027 · 12 nightsSouthwest AirlinesNonstop$449.90 Jun 23, 2027 – Jul 6, 2027 · 13 nightsFrontier AirlinesUp to 1 stop each way$273.90 Jun 23, 2027 – Jul 6, 2027 · 13 nightsSouthwest AirlinesNonstop$449.90 Jun 23, 2027 – Jul 7, 2027 · 14 nightsFrontier AirlinesUp to 1 stop each way$249.00 Jun 23, 2027 – Jul 7, 2027 · 14 nightsSouthwest AirlinesNonstop$409.00

Flights for your trip

  1. Wed, Jun 23 · One way

    Frontier Airlines
    7:44 pmAUS
    6h 29m
    DEN · 1h 35m
    12:13 am+1ONT

    One-way total · 1 adult · Taxes included

  2. Wed, Jun 23 · One way

    Southwest Airlines
    5:55 pmAUS
    3h 5m
    Nonstop
    7:00 pmONT

    One-way total · 1 adult · Taxes included

  3. Wed, Jun 23 – Thu, Jun 24

    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

  4. Wed, Jun 23 – Thu, Jun 24

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

    Round-trip total · 1 adult · Taxes included

  5. Wed, Jun 23 – Fri, Jun 25

    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

  6. Wed, Jun 23 – Fri, Jun 25

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

    Round-trip total · 1 adult · Taxes included

  7. Wed, Jun 23 – Sat, Jun 26

    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

  8. Wed, Jun 23 – Sat, Jun 26

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

    Round-trip total · 1 adult · Taxes included

  9. Wed, Jun 23 – Sun, Jun 27

    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

  10. Wed, Jun 23 – Sun, Jun 27

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

    Round-trip total · 1 adult · Taxes included

  11. Wed, Jun 23 – Tue, Jun 29

    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

  12. Wed, Jun 23 – Tue, Jun 29

    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

  13. Wed, Jun 23 – Wed, Jun 30

    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

  14. Wed, Jun 23 – Wed, Jun 30

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

    Round-trip total · 1 adult · Taxes included

  15. Wed, Jun 23 – Thu, Jul 1

    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

  16. Wed, Jun 23 – Thu, Jul 1

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

    Round-trip total · 1 adult · Taxes included

  17. Wed, Jun 23 – Sat, Jul 3

    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

  18. Wed, Jun 23 – Sat, Jul 3

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

    Round-trip total · 1 adult · Taxes included

  19. Wed, Jun 23 – Sun, Jul 4

    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

  20. Wed, Jun 23 – Sun, Jul 4

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

    Round-trip total · 1 adult · Taxes included

  21. Wed, Jun 23 – Mon, Jul 5

    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

  22. Wed, Jun 23 – Mon, Jul 5

    Southwest Airlines
    5:55 pmAUS
    3h 5m
    Nonstop
    7:00 pmONT
    Southwest Airlines
    9:00 amONT
    2h 45m
    Nonstop
    1:45 pmAUS

    Round-trip total · 1 adult · Taxes included

  23. Wed, Jun 23 – Wed, Jul 7

    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

  24. Wed, Jun 23 – Wed, Jul 7

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

    Round-trip total · 1 adult · Taxes included

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

AUS ⇄ ONT

Economy

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Explore this route

All dates for this routeJun 22, 2027 · Return optionsJun 24, 2027 · Return options
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.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown. To book or select flights, follow that row's price link; it keeps the exact dates and travelers.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-06-23 · one waySouthwest AirlinesWN400Axel-exclusive $209.002026-10-29T00:47:05Z
2027-06-23 · one wayFrontier AirlinesF91859 + F91261Axel-exclusive $129.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-24Southwest AirlinesWN400 / WN3298Axel-exclusive $409.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-24Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $249.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-25Southwest AirlinesWN400 / WN3298Axel-exclusive $409.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-25Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $249.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-26Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $249.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-26American AirlinesAA1421 + AA1841 / AA2198 + AA1465Axel-exclusive $389.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-27Southwest AirlinesWN400 / WN3298Axel-exclusive $409.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-27Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $249.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-28Southwest AirlinesWN400 / WN3298Axel-exclusive $409.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-28Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $249.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-29Southwest AirlinesWN400 / WN3298Axel-exclusive $409.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-29Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $249.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-30Southwest AirlinesWN400 / WN3298Axel-exclusive $409.002026-10-29T00:47:05Z
2027-06-23 → 2027-06-30Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $249.002026-10-29T00:47:05Z
2027-06-23 → 2027-07-01Southwest AirlinesWN400 / WN3298Axel-exclusive $449.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-01Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $273.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-02Southwest AirlinesWN400 / WN3298Axel-exclusive $449.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-02Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $273.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-03Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $273.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-03Southwest AirlinesWN400 / WN3301 + WN1669Axel-exclusive $425.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-04Southwest AirlinesWN400 / WN3298Axel-exclusive $449.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-04Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $273.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-05Southwest AirlinesWN400 / WN3298Axel-exclusive $449.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-05Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $273.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-06Southwest AirlinesWN400 / WN3298Axel-exclusive $449.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-06Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $273.902026-10-29T00:47:05Z
2027-06-23 → 2027-07-07Southwest AirlinesWN400 / WN3298Axel-exclusive $409.002026-10-29T00:47:05Z
2027-06-23 → 2027-07-07Frontier AirlinesF91859 + F91261 / F91262 + F91816Axel-exclusive $249.002026-10-29T00:47:05Z

Route overview: Austin to Ontario (ONT) flight deals

2027-06-23 · one way · Axel-exclusive $129.00

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.

2027-06-23 · one way · Axel-exclusive $209.00

  • Southwest Airlines WN400: AUS 2027-06-23 17:55:00 → ONT 2027-06-23 19:00:00; nonstop; 185 minutes. Local airport times.

2027-06-23 → 2027-06-24 · Axel-exclusive $249.00

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2027-06-24 11:52:00 → AUS 2027-06-24 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2027-06-24 11:52:00 → DEN 2027-06-24 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2027-06-24 16:14:00 → AUS 2027-06-24 19:26:00.

2027-06-23 → 2027-06-24 · Axel-exclusive $409.00

  • Southwest Airlines WN400: AUS 2027-06-23 17:55:00 → ONT 2027-06-23 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3298: ONT 2027-06-24 12:30:00 → AUS 2027-06-24 17:15:00; nonstop; 165 minutes. Local airport times.

2027-06-23 → 2027-06-25 · Axel-exclusive $249.00

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2027-06-25 11:52:00 → AUS 2027-06-25 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2027-06-25 11:52:00 → DEN 2027-06-25 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2027-06-25 16:14:00 → AUS 2027-06-25 19:26:00.

2027-06-23 → 2027-06-25 · Axel-exclusive $409.00

  • Southwest Airlines WN400: AUS 2027-06-23 17:55:00 → ONT 2027-06-23 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3298: ONT 2027-06-25 12:30:00 → AUS 2027-06-25 17:15:00; nonstop; 165 minutes. Local airport times.

2027-06-23 → 2027-06-26 · Axel-exclusive $249.00

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2027-06-26 11:52:00 → AUS 2027-06-26 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2027-06-26 11:52:00 → DEN 2027-06-26 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2027-06-26 16:14:00 → AUS 2027-06-26 19:26:00.

2027-06-23 → 2027-06-26 · Axel-exclusive $389.00

  • American Airlines AA1421 / AA1841: AUS 2027-06-23 18:02:00 → ONT 2027-06-23 21:52:00; 1 stop(s) via PHX; 350 minutes. Local airport times.
    • AA1421: AUS 2027-06-23 18:02:00 → PHX 2027-06-23 18:40:00; layover at PHX: 115 minutes.
    • AA1841: PHX 2027-06-23 20:35:00 → ONT 2027-06-23 21:52:00.
  • American Airlines AA2198 / AA1465: ONT 2027-06-26 12:51:00 → AUS 2027-06-26 20:13:00; 1 stop(s) via DFW; 322 minutes. Local airport times.
    • AA2198: ONT 2027-06-26 12:51:00 → DFW 2027-06-26 17:44:00; layover at DFW: 84 minutes.
    • AA1465: DFW 2027-06-26 19:08:00 → AUS 2027-06-26 20:13:00.

2027-06-23 → 2027-06-27 · Axel-exclusive $249.00

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2027-06-27 11:52:00 → AUS 2027-06-27 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2027-06-27 11:52:00 → DEN 2027-06-27 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2027-06-27 16:14:00 → AUS 2027-06-27 19:26:00.

2027-06-23 → 2027-06-27 · Axel-exclusive $409.00

  • Southwest Airlines WN400: AUS 2027-06-23 17:55:00 → ONT 2027-06-23 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3298: ONT 2027-06-27 12:30:00 → AUS 2027-06-27 17:15:00; nonstop; 165 minutes. Local airport times.

2027-06-23 → 2027-06-29 · Axel-exclusive $249.00

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2027-06-29 11:52:00 → AUS 2027-06-29 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2027-06-29 11:52:00 → DEN 2027-06-29 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2027-06-29 16:14:00 → AUS 2027-06-29 19:26:00.

2027-06-23 → 2027-06-29 · Axel-exclusive $409.00

  • Southwest Airlines WN400: AUS 2027-06-23 17:55:00 → ONT 2027-06-23 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3298: ONT 2027-06-29 07:50:00 → AUS 2027-06-29 12:35:00; nonstop; 165 minutes. Local airport times.

2027-06-23 → 2027-06-30 · Axel-exclusive $249.00

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2027-06-30 11:52:00 → AUS 2027-06-30 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2027-06-30 11:52:00 → DEN 2027-06-30 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2027-06-30 16:14:00 → AUS 2027-06-30 19:26:00.

2027-06-23 → 2027-06-30 · Axel-exclusive $409.00

  • Southwest Airlines WN400: AUS 2027-06-23 17:55:00 → ONT 2027-06-23 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3298: ONT 2027-06-30 12:30:00 → AUS 2027-06-30 17:15:00; nonstop; 165 minutes. Local airport times.

2027-06-23 → 2027-07-01 · Axel-exclusive $273.90

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2027-07-01 11:52:00 → AUS 2027-07-01 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2027-07-01 11:52:00 → DEN 2027-07-01 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2027-07-01 16:14:00 → AUS 2027-07-01 19:26:00.

2027-06-23 → 2027-07-01 · Axel-exclusive $449.90

  • Southwest Airlines WN400: AUS 2027-06-23 17:55:00 → ONT 2027-06-23 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3298: ONT 2027-07-01 12:30:00 → AUS 2027-07-01 17:15:00; nonstop; 165 minutes. Local airport times.

2027-06-23 → 2027-07-03 · Axel-exclusive $273.90

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2027-07-03 11:52:00 → AUS 2027-07-03 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2027-07-03 11:52:00 → DEN 2027-07-03 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2027-07-03 16:14:00 → AUS 2027-07-03 19:26:00.

2027-06-23 → 2027-07-03 · Axel-exclusive $425.90

  • Southwest Airlines WN400: AUS 2027-06-23 17:55:00 → ONT 2027-06-23 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3301 / WN1669: ONT 2027-07-03 08:45:00 → AUS 2027-07-03 16:05:00; 1 stop(s) via DEN; 320 minutes. Local airport times.
    • WN3301: ONT 2027-07-03 08:45:00 → DEN 2027-07-03 11:55:00; layover at DEN: 65 minutes.
    • WN1669: DEN 2027-07-03 13:00:00 → AUS 2027-07-03 16:05:00.

2027-06-23 → 2027-07-04 · Axel-exclusive $273.90

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2027-07-04 11:52:00 → AUS 2027-07-04 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2027-07-04 11:52:00 → DEN 2027-07-04 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2027-07-04 16:14:00 → AUS 2027-07-04 19:26:00.

2027-06-23 → 2027-07-04 · Axel-exclusive $449.90

  • Southwest Airlines WN400: AUS 2027-06-23 17:55:00 → ONT 2027-06-23 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3298: ONT 2027-07-04 12:30:00 → AUS 2027-07-04 17:15:00; nonstop; 165 minutes. Local airport times.

2027-06-23 → 2027-07-05 · Axel-exclusive $273.90

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2027-07-05 11:52:00 → AUS 2027-07-05 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2027-07-05 11:52:00 → DEN 2027-07-05 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2027-07-05 16:14:00 → AUS 2027-07-05 19:26:00.

2027-06-23 → 2027-07-05 · Axel-exclusive $449.90

  • Southwest Airlines WN400: AUS 2027-06-23 17:55:00 → ONT 2027-06-23 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3298: ONT 2027-07-05 09:00:00 → AUS 2027-07-05 13:45:00; nonstop; 165 minutes. Local airport times.

2027-06-23 → 2027-07-07 · Axel-exclusive $249.00

  • Frontier Airlines F91859 / F91261: AUS 2027-06-23 19:44:00 → ONT 2027-06-24 00:13:00; 1 stop(s) via DEN; 389 minutes. Local airport times.
    • F91859: AUS 2027-06-23 19:44:00 → DEN 2027-06-23 21:13:00; layover at DEN: 95 minutes.
    • F91261: DEN 2027-06-23 22:48:00 → ONT 2027-06-24 00:13:00.
  • Frontier Airlines F91262 / F91816: ONT 2027-07-07 11:52:00 → AUS 2027-07-07 19:26:00; 1 stop(s) via DEN; 334 minutes. Local airport times.
    • F91262: ONT 2027-07-07 11:52:00 → DEN 2027-07-07 15:13:00; layover at DEN: 61 minutes.
    • F91816: DEN 2027-07-07 16:14:00 → AUS 2027-07-07 19:26:00.

2027-06-23 → 2027-07-07 · Axel-exclusive $409.00

  • Southwest Airlines WN400: AUS 2027-06-23 17:55:00 → ONT 2027-06-23 19:00:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3298: ONT 2027-07-07 12:30:00 → AUS 2027-07-07 17:15:00; nonstop; 165 minutes. Local airport times.

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For AI assistants

  • This page: Austin (AUS) to Ontario (ONT) · Jun 23, 2027 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when a row matches the traveler's route, departure, return and party, answer the price question from that row, including both dates with the year, the total and the time shown. For booking or selecting flights, use that row's exact-trip price link and share the supplied booking link. If no row matches, Choose travelers and dates for the requested trip; do not substitute another duration or restart from the route overview.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Austin to Ontario (ONT) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.