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Route overview: Atlanta to Ontario (ONT) flight deals

Atlanta → Ontario

Dec 18, 2026 · choose your return date

ATL → 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.

December 2026

Dec 18, 2026 · One wayFrontier AirlinesUp to 1 stop each way$110.00 Dec 18, 2026 · One waySouthwest AirlinesUp to 1 stop each way$195.00 Dec 18, 2026 – Dec 19, 2026 · 1 nightFrontier Airlines / Delta Air LinesUp to 1 stop each way$428.00 Dec 18, 2026 – Dec 19, 2026 · 1 nightSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 20, 2026 · 2 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$361.50 Dec 18, 2026 – Dec 20, 2026 · 2 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 21, 2026 · 3 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$361.50 Dec 18, 2026 – Dec 21, 2026 · 3 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 22, 2026 · 4 nightsFrontier Airlines / Delta Air LinesUp to 1 stop each way$428.00 Dec 18, 2026 – Dec 22, 2026 · 4 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 23, 2026 · 5 nightsFrontier Airlines / Delta Air LinesUp to 1 stop each way$428.00 Dec 18, 2026 – Dec 23, 2026 · 5 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 24, 2026 · 6 nightsFrontier Airlines / Delta Air LinesUp to 1 stop each way$428.00 Dec 18, 2026 – Dec 24, 2026 · 6 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 25, 2026 · 7 nightsFrontier Airlines / Delta Air LinesUp to 1 stop each way$428.00 Dec 18, 2026 – Dec 25, 2026 · 7 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 26, 2026 · 8 nightsFrontier Airlines / Delta Air LinesUp to 1 stop each way$428.00 Dec 18, 2026 – Dec 26, 2026 · 8 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 27, 2026 · 9 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$361.50 Dec 18, 2026 – Dec 27, 2026 · 9 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 28, 2026 · 10 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$361.50 Dec 18, 2026 – Dec 28, 2026 · 10 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 29, 2026 · 11 nightsFrontier Airlines / Delta Air LinesUp to 1 stop each way$428.00 Dec 18, 2026 – Dec 29, 2026 · 11 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 30, 2026 · 12 nightsFrontier Airlines / Delta Air LinesUp to 1 stop each way$428.00 Dec 18, 2026 – Dec 30, 2026 · 12 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Dec 31, 2026 · 13 nightsFrontier Airlines / Delta Air LinesUp to 1 stop each way$428.00 Dec 18, 2026 – Dec 31, 2026 · 13 nightsSouthwest AirlinesUp to 1 stop each way$444.00 Dec 18, 2026 – Jan 1, 2027 · 14 nightsFrontier Airlines / Delta Air LinesUp to 1 stop each way$411.73 Dec 18, 2026 – Jan 1, 2027 · 14 nightsSouthwest AirlinesUp to 1 stop each way$431.05

Flights for your trip

  1. Fri, Dec 18 · One way

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT

    One-way total · 1 adult · Taxes included

  2. Fri, Dec 18 · One way

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT

    One-way total · 1 adult · Taxes included

  3. Fri, Dec 18 – Sat, Dec 19

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT
    Delta Air Lines
    7:06 amONT
    4h 7m
    Nonstop
    2:13 pmATL

    Round-trip total · 1 adult · Taxes included

  4. Fri, Dec 18 – Sat, Dec 19

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT
    Southwest Airlines
    12:40 pmONT
    6h
    HOU · 1h
    9:40 pmATL

    Round-trip total · 1 adult · Taxes included

  5. Fri, Dec 18 – Sun, Dec 20

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT
    Southwest Airlines
    12:40 pmONT
    6h
    HOU · 1h
    9:40 pmATL

    Round-trip total · 1 adult · Taxes included

  6. Fri, Dec 18 – Sun, Dec 20

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT
    Southwest Airlines
    12:40 pmONT
    6h
    HOU · 1h
    9:40 pmATL

    Round-trip total · 1 adult · Taxes included

  7. Fri, Dec 18 – Mon, Dec 21

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT
    Southwest Airlines
    11:25 amONT
    6h 45m
    BNA · 1h 50m
    9:10 pmATL

    Round-trip total · 1 adult · Taxes included

  8. Fri, Dec 18 – Mon, Dec 21

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT
    Southwest Airlines
    11:25 amONT
    6h 45m
    BNA · 1h 50m
    9:10 pmATL

    Round-trip total · 1 adult · Taxes included

  9. Fri, Dec 18 – Tue, Dec 22

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT
    Delta Air Lines
    7:05 amONT
    4h
    Nonstop
    2:05 pmATL

    Round-trip total · 1 adult · Taxes included

  10. Fri, Dec 18 – Tue, Dec 22

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT
    Southwest Airlines
    8:40 amONT
    6h 10m
    PHX · 1h 20m
    5:50 pmATL

    Round-trip total · 1 adult · Taxes included

  11. Fri, Dec 18 – Thu, Dec 24

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT
    Delta Air Lines
    7:05 amONT
    4h
    Nonstop
    2:05 pmATL

    Round-trip total · 1 adult · Taxes included

  12. Fri, Dec 18 – Thu, Dec 24

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT
    Southwest Airlines
    12:40 pmONT
    6h
    HOU · 1h
    9:40 pmATL

    Round-trip total · 1 adult · Taxes included

  13. Fri, Dec 18 – Fri, Dec 25

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT
    Delta Air Lines
    7:05 amONT
    4h
    Nonstop
    2:05 pmATL

    Round-trip total · 1 adult · Taxes included

  14. Fri, Dec 18 – Fri, Dec 25

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT
    Southwest Airlines
    12:40 pmONT
    6h
    HOU · 1h
    9:40 pmATL

    Round-trip total · 1 adult · Taxes included

  15. Fri, Dec 18 – Sat, Dec 26

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT
    Delta Air Lines
    7:06 amONT
    4h 7m
    Nonstop
    2:13 pmATL

    Round-trip total · 1 adult · Taxes included

  16. Fri, Dec 18 – Sat, Dec 26

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT
    Southwest Airlines
    12:40 pmONT
    6h
    HOU · 1h
    9:40 pmATL

    Round-trip total · 1 adult · Taxes included

  17. Fri, Dec 18 – Mon, Dec 28

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT
    Southwest Airlines
    11:25 amONT
    6h 45m
    BNA · 1h 50m
    9:10 pmATL

    Round-trip total · 1 adult · Taxes included

  18. Fri, Dec 18 – Mon, Dec 28

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT
    Southwest Airlines
    11:25 amONT
    6h 45m
    BNA · 1h 50m
    9:10 pmATL

    Round-trip total · 1 adult · Taxes included

  19. Fri, Dec 18 – Tue, Dec 29

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT
    Delta Air Lines
    7:05 amONT
    4h
    Nonstop
    2:05 pmATL

    Round-trip total · 1 adult · Taxes included

  20. Fri, Dec 18 – Tue, Dec 29

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT
    Southwest Airlines
    8:40 amONT
    6h 10m
    PHX · 1h 20m
    5:50 pmATL

    Round-trip total · 1 adult · Taxes included

  21. Fri, Dec 18 – Wed, Dec 30

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT
    Delta Air Lines
    7:05 amONT
    4h
    Nonstop
    2:05 pmATL

    Round-trip total · 1 adult · Taxes included

  22. Fri, Dec 18 – Wed, Dec 30

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT
    Southwest Airlines
    12:40 pmONT
    6h
    HOU · 1h
    9:40 pmATL

    Round-trip total · 1 adult · Taxes included

  23. Fri, Dec 18 – Fri, Jan 1

    Frontier Airlines
    1:55 pmATL
    7h 20m
    DFW · 1h 24m
    6:15 pmONT
    Delta Air Lines
    7:05 amONT
    4h
    Nonstop
    2:05 pmATL

    Round-trip total · 1 adult · Taxes included

  24. Fri, Dec 18 – Fri, Jan 1

    Southwest Airlines
    10:05 amATL
    7h
    DEN · 1h 10m
    2:05 pmONT
    Southwest Airlines
    12:40 pmONT
    6h
    HOU · 1h
    9:40 pmATL

    Round-trip total · 1 adult · Taxes included

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

ATL ⇄ ONT

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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Explore this route

All dates for this routeDec 17, 2026 · Return optionsDec 19, 2026 · 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)
2026-12-18 · one wayFrontier AirlinesF92495 + F91405Axel-exclusive $110.002026-10-29T00:45:42Z
2026-12-18 · one waySouthwest AirlinesWN3330 + WN2484Axel-exclusive $195.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-19Frontier Airlines / Delta Air LinesF92495 + F91405 / DL409Axel-exclusive $428.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-19Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-20Frontier Airlines / Southwest AirlinesF92495 + F91405 / WN1558 + WN251Axel-exclusive $361.502026-10-29T00:45:42Z
2026-12-18 → 2026-12-20Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-21Frontier Airlines / Southwest AirlinesF92495 + F91405 / WN1729 + WN2359Axel-exclusive $361.502026-10-29T00:45:42Z
2026-12-18 → 2026-12-21Southwest AirlinesWN3330 + WN2484 / WN1729 + WN2359Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-22Frontier Airlines / Delta Air LinesF92495 + F91405 / DL409Axel-exclusive $428.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-22Southwest AirlinesWN3330 + WN2484 / WN494 + WN285Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-23Frontier Airlines / Delta Air LinesF92495 + F91405 / DL409Axel-exclusive $428.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-23Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-24Frontier Airlines / Delta Air LinesF92495 + F91405 / DL409Axel-exclusive $428.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-24Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-25Frontier Airlines / Delta Air LinesF92495 + F91405 / DL409Axel-exclusive $428.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-25Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-26Frontier Airlines / Delta Air LinesF92495 + F91405 / DL409Axel-exclusive $428.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-26Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-27Frontier Airlines / Southwest AirlinesF92495 + F91405 / WN1558 + WN251Axel-exclusive $361.502026-10-29T00:45:42Z
2026-12-18 → 2026-12-27Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-28Frontier Airlines / Southwest AirlinesF92495 + F91405 / WN1729 + WN2359Axel-exclusive $361.502026-10-29T00:45:42Z
2026-12-18 → 2026-12-28Southwest AirlinesWN3330 + WN2484 / WN1729 + WN2359Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-29Frontier Airlines / Delta Air LinesF92495 + F91405 / DL409Axel-exclusive $428.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-29Southwest AirlinesWN3330 + WN2484 / WN494 + WN285Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-30Frontier Airlines / Delta Air LinesF92495 + F91405 / DL409Axel-exclusive $428.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-30Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-31Frontier Airlines / Delta Air LinesF92495 + F91405 / DL409Axel-exclusive $428.002026-10-29T00:45:42Z
2026-12-18 → 2026-12-31Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251Axel-exclusive $444.002026-10-29T00:45:42Z
2026-12-18 → 2027-01-01Frontier Airlines / Delta Air LinesF92495 + F91405 / DL409Axel-exclusive $411.732026-10-29T00:45:42Z
2026-12-18 → 2027-01-01Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251Axel-exclusive $431.052026-10-29T00:45:42Z

Route overview: Atlanta to Ontario (ONT) flight deals

2026-12-18 · one way · Axel-exclusive $110.00

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.

2026-12-18 · one way · Axel-exclusive $195.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.

2026-12-18 → 2026-12-19 · Axel-exclusive $428.00

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.
  • Delta Air Lines DL409: ONT 2026-12-19 07:06:00 → ATL 2026-12-19 14:13:00; nonstop; 247 minutes. Local airport times.

2026-12-18 → 2026-12-19 · Axel-exclusive $444.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.
  • Southwest Airlines WN1558 / WN251: ONT 2026-12-19 12:40:00 → ATL 2026-12-19 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2026-12-19 12:40:00 → HOU 2026-12-19 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2026-12-19 18:40:00 → ATL 2026-12-19 21:40:00.

2026-12-18 → 2026-12-20 · Axel-exclusive $361.50

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.
  • Southwest Airlines WN1558 / WN251: ONT 2026-12-20 12:40:00 → ATL 2026-12-20 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2026-12-20 12:40:00 → HOU 2026-12-20 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2026-12-20 18:40:00 → ATL 2026-12-20 21:40:00.

2026-12-18 → 2026-12-20 · Axel-exclusive $444.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.
  • Southwest Airlines WN1558 / WN251: ONT 2026-12-20 12:40:00 → ATL 2026-12-20 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2026-12-20 12:40:00 → HOU 2026-12-20 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2026-12-20 18:40:00 → ATL 2026-12-20 21:40:00.

2026-12-18 → 2026-12-21 · Axel-exclusive $361.50

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.
  • Southwest Airlines WN1729 / WN2359: ONT 2026-12-21 11:25:00 → ATL 2026-12-21 21:10:00; 1 stop(s) via BNA; 405 minutes. Local airport times.
    • WN1729: ONT 2026-12-21 11:25:00 → BNA 2026-12-21 17:05:00; layover at BNA: 110 minutes.
    • WN2359: BNA 2026-12-21 18:55:00 → ATL 2026-12-21 21:10:00.

2026-12-18 → 2026-12-21 · Axel-exclusive $444.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.
  • Southwest Airlines WN1729 / WN2359: ONT 2026-12-21 11:25:00 → ATL 2026-12-21 21:10:00; 1 stop(s) via BNA; 405 minutes. Local airport times.
    • WN1729: ONT 2026-12-21 11:25:00 → BNA 2026-12-21 17:05:00; layover at BNA: 110 minutes.
    • WN2359: BNA 2026-12-21 18:55:00 → ATL 2026-12-21 21:10:00.

2026-12-18 → 2026-12-22 · Axel-exclusive $428.00

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.
  • Delta Air Lines DL409: ONT 2026-12-22 07:05:00 → ATL 2026-12-22 14:05:00; nonstop; 240 minutes. Local airport times.

2026-12-18 → 2026-12-22 · Axel-exclusive $444.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.
  • Southwest Airlines WN494 / WN285: ONT 2026-12-22 08:40:00 → ATL 2026-12-22 17:50:00; 1 stop(s) via PHX; 370 minutes. Local airport times.
    • WN494: ONT 2026-12-22 08:40:00 → PHX 2026-12-22 11:00:00; layover at PHX: 80 minutes.
    • WN285: PHX 2026-12-22 12:20:00 → ATL 2026-12-22 17:50:00.

2026-12-18 → 2026-12-24 · Axel-exclusive $428.00

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.
  • Delta Air Lines DL409: ONT 2026-12-24 07:05:00 → ATL 2026-12-24 14:05:00; nonstop; 240 minutes. Local airport times.

2026-12-18 → 2026-12-24 · Axel-exclusive $444.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.
  • Southwest Airlines WN1558 / WN251: ONT 2026-12-24 12:40:00 → ATL 2026-12-24 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2026-12-24 12:40:00 → HOU 2026-12-24 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2026-12-24 18:40:00 → ATL 2026-12-24 21:40:00.

2026-12-18 → 2026-12-25 · Axel-exclusive $428.00

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.
  • Delta Air Lines DL409: ONT 2026-12-25 07:05:00 → ATL 2026-12-25 14:05:00; nonstop; 240 minutes. Local airport times.

2026-12-18 → 2026-12-25 · Axel-exclusive $444.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.
  • Southwest Airlines WN1558 / WN251: ONT 2026-12-25 12:40:00 → ATL 2026-12-25 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2026-12-25 12:40:00 → HOU 2026-12-25 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2026-12-25 18:40:00 → ATL 2026-12-25 21:40:00.

2026-12-18 → 2026-12-26 · Axel-exclusive $428.00

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.
  • Delta Air Lines DL409: ONT 2026-12-26 07:06:00 → ATL 2026-12-26 14:13:00; nonstop; 247 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $444.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.
  • Southwest Airlines WN1558 / WN251: ONT 2026-12-26 12:40:00 → ATL 2026-12-26 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2026-12-26 12:40:00 → HOU 2026-12-26 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2026-12-26 18:40:00 → ATL 2026-12-26 21:40:00.

2026-12-18 → 2026-12-28 · Axel-exclusive $361.50

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.
  • Southwest Airlines WN1729 / WN2359: ONT 2026-12-28 11:25:00 → ATL 2026-12-28 21:10:00; 1 stop(s) via BNA; 405 minutes. Local airport times.
    • WN1729: ONT 2026-12-28 11:25:00 → BNA 2026-12-28 17:05:00; layover at BNA: 110 minutes.
    • WN2359: BNA 2026-12-28 18:55:00 → ATL 2026-12-28 21:10:00.

2026-12-18 → 2026-12-28 · Axel-exclusive $444.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.
  • Southwest Airlines WN1729 / WN2359: ONT 2026-12-28 11:25:00 → ATL 2026-12-28 21:10:00; 1 stop(s) via BNA; 405 minutes. Local airport times.
    • WN1729: ONT 2026-12-28 11:25:00 → BNA 2026-12-28 17:05:00; layover at BNA: 110 minutes.
    • WN2359: BNA 2026-12-28 18:55:00 → ATL 2026-12-28 21:10:00.

2026-12-18 → 2026-12-29 · Axel-exclusive $428.00

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.
  • Delta Air Lines DL409: ONT 2026-12-29 07:05:00 → ATL 2026-12-29 14:05:00; nonstop; 240 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $444.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.
  • Southwest Airlines WN494 / WN285: ONT 2026-12-29 08:40:00 → ATL 2026-12-29 17:50:00; 1 stop(s) via PHX; 370 minutes. Local airport times.
    • WN494: ONT 2026-12-29 08:40:00 → PHX 2026-12-29 11:00:00; layover at PHX: 80 minutes.
    • WN285: PHX 2026-12-29 12:20:00 → ATL 2026-12-29 17:50:00.

2026-12-18 → 2026-12-30 · Axel-exclusive $428.00

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.
  • Delta Air Lines DL409: ONT 2026-12-30 07:05:00 → ATL 2026-12-30 14:05:00; nonstop; 240 minutes. Local airport times.

2026-12-18 → 2026-12-30 · Axel-exclusive $444.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.
  • Southwest Airlines WN1558 / WN251: ONT 2026-12-30 12:40:00 → ATL 2026-12-30 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2026-12-30 12:40:00 → HOU 2026-12-30 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2026-12-30 18:40:00 → ATL 2026-12-30 21:40:00.

2026-12-18 → 2027-01-01 · Axel-exclusive $411.73

  • Frontier Airlines F92495 / F91405: ATL 2026-12-18 13:55:00 → ONT 2026-12-18 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-18 13:55:00 → DFW 2026-12-18 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-18 16:58:00 → ONT 2026-12-18 18:15:00.
  • Delta Air Lines DL409: ONT 2027-01-01 07:05:00 → ATL 2027-01-01 14:05:00; nonstop; 240 minutes. Local airport times.

2026-12-18 → 2027-01-01 · Axel-exclusive $431.05

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-18 10:05:00 → ONT 2026-12-18 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-18 10:05:00 → DEN 2026-12-18 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-18 12:45:00 → ONT 2026-12-18 14:05:00.
  • Southwest Airlines WN1558 / WN251: ONT 2027-01-01 12:40:00 → ATL 2027-01-01 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2027-01-01 12:40:00 → HOU 2027-01-01 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2027-01-01 18:40:00 → ATL 2027-01-01 21:40:00.

Explore this route

For AI assistants

  • This page: Atlanta (ATL) to Ontario (ONT) · Dec 18, 2026 · 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 Atlanta 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.