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Atlanta → Ontario

Dec 21, 2026 · return Jan 4, 2027

ATL → ONT1 adulteconomyRound trip

8 flight options · 4 airlines

Nonstop flights

Mon, Dec 21 – Mon, Jan 4

Delta Air Lines
7:15 pmATL
4h 39m
Nonstop
8:54 pmONT
Delta Air Lines
7:05 amONT
4h
Nonstop
2:05 pmATL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Delta Air Lines
9:18 amATL
4h 49m
Nonstop
11:07 amONT
Delta Air Lines
7:05 amONT
4h
Nonstop
2:05 pmATL

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Mon, Jan 4

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

Mon, Dec 21 – Mon, Jan 4

Southwest Airlines
6:15 amATL
7h 30m
DAL · 2h 10m
10:45 amONT
Southwest Airlines
11:25 amONT
6h 45m
BNA · 1h 50m
9:10 pmATL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

American Airlines
5:40 pmATL
7h 12m
PHX · 1h 42m
9:52 pmONT
American Airlines
6:20 amONT
6h 13m
PHX · 1h 6m
3:33 pmATL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

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

Mon, Dec 21 – Mon, Jan 4

Southwest Airlines
8:20 pmATL
6h 35m
LAS · 1h
11:55 pmONT
Southwest Airlines
11:25 amONT
6h 45m
BNA · 1h 50m
9:10 pmATL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Delta Air Lines
8:05 amATL
7h 12m
SLC · 1h 15m
12:17 pmONT
Delta Air Lines
7:05 amONT
4h
Nonstop
2:05 pmATL

Round-trip total · 1 adult · Taxes included

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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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)
2026-12-21 → 2027-01-04Delta Air LinesDL779 / DL409$546.382026-10-29T00:45:42Z
2026-12-21 → 2027-01-04Frontier Airlines / Southwest AirlinesF92495 + F91405 / WN1729 + WN2359$319.252026-10-29T00:45:42Z
2026-12-21 → 2027-01-04Southwest AirlinesWN4455 + WN3819 / WN1729 + WN2359$434.752026-10-29T00:45:42Z
2026-12-21 → 2027-01-04American AirlinesAA593 + AA1841 / AA1591 + AA593$464.132026-10-29T00:45:42Z
2026-12-21 → 2027-01-04Delta Air LinesDL665 / DL409$546.382026-10-29T00:45:42Z
2026-12-21 → 2027-01-04Southwest AirlinesWN3330 + WN2484 / WN1729 + WN2359$434.752026-10-29T00:45:42Z
2026-12-21 → 2027-01-04Southwest AirlinesWN237 + WN2405 / WN1729 + WN2359$434.752026-10-29T00:45:42Z
2026-12-21 → 2027-01-04Delta Air LinesDL830 + DL1787 / DL409$511.382026-10-29T00:45:42Z

2026-12-21 → 2027-01-04 · $546.38

  • Delta Air Lines DL779: ATL 2026-12-21 19:15:00 → ONT 2026-12-21 20:54:00; nonstop; 279 minutes. Local airport times.
  • Delta Air Lines DL409: ONT 2027-01-04 07:05:00 → ATL 2027-01-04 14:05:00; nonstop; 240 minutes. Local airport times.

2026-12-21 → 2027-01-04 · $319.25

  • Frontier Airlines F92495 / F91405: ATL 2026-12-21 13:55:00 → ONT 2026-12-21 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-21 13:55:00 → DFW 2026-12-21 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-21 16:58:00 → ONT 2026-12-21 18:15:00.
  • Southwest Airlines WN1729 / WN2359: ONT 2027-01-04 11:25:00 → ATL 2027-01-04 21:10:00; 1 stop(s) via BNA; 405 minutes. Local airport times.
    • WN1729: ONT 2027-01-04 11:25:00 → BNA 2027-01-04 17:05:00; layover at BNA: 110 minutes.
    • WN2359: BNA 2027-01-04 18:55:00 → ATL 2027-01-04 21:10:00.

2026-12-21 → 2027-01-04 · $434.75

  • Southwest Airlines WN4455 / WN3819: ATL 2026-12-21 06:15:00 → ONT 2026-12-21 10:45:00; 1 stop(s) via DAL; 450 minutes. Local airport times.
    • WN4455: ATL 2026-12-21 06:15:00 → DAL 2026-12-21 07:30:00; layover at DAL: 130 minutes.
    • WN3819: DAL 2026-12-21 09:40:00 → ONT 2026-12-21 10:45:00.
  • Southwest Airlines WN1729 / WN2359: ONT 2027-01-04 11:25:00 → ATL 2027-01-04 21:10:00; 1 stop(s) via BNA; 405 minutes. Local airport times.
    • WN1729: ONT 2027-01-04 11:25:00 → BNA 2027-01-04 17:05:00; layover at BNA: 110 minutes.
    • WN2359: BNA 2027-01-04 18:55:00 → ATL 2027-01-04 21:10:00.

2026-12-21 → 2027-01-04 · $464.13

  • American Airlines AA593 / AA1841: ATL 2026-12-21 17:40:00 → ONT 2026-12-21 21:52:00; 1 stop(s) via PHX; 432 minutes. Local airport times.
    • AA593: ATL 2026-12-21 17:40:00 → PHX 2026-12-21 19:53:00; layover at PHX: 102 minutes.
    • AA1841: PHX 2026-12-21 21:35:00 → ONT 2026-12-21 21:52:00.
  • American Airlines AA1591 / AA593: ONT 2027-01-04 06:20:00 → ATL 2027-01-04 15:33:00; 1 stop(s) via PHX; 373 minutes. Local airport times.
    • AA1591: ONT 2027-01-04 06:20:00 → PHX 2027-01-04 08:48:00; layover at PHX: 66 minutes.
    • AA593: PHX 2027-01-04 09:54:00 → ATL 2027-01-04 15:33:00.

2026-12-21 → 2027-01-04 · $546.38

  • Delta Air Lines DL665: ATL 2026-12-21 09:18:00 → ONT 2026-12-21 11:07:00; nonstop; 289 minutes. Local airport times.
  • Delta Air Lines DL409: ONT 2027-01-04 07:05:00 → ATL 2027-01-04 14:05:00; nonstop; 240 minutes. Local airport times.

2026-12-21 → 2027-01-04 · $434.75

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-21 10:05:00 → ONT 2026-12-21 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-21 10:05:00 → DEN 2026-12-21 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-21 12:45:00 → ONT 2026-12-21 14:05:00.
  • Southwest Airlines WN1729 / WN2359: ONT 2027-01-04 11:25:00 → ATL 2027-01-04 21:10:00; 1 stop(s) via BNA; 405 minutes. Local airport times.
    • WN1729: ONT 2027-01-04 11:25:00 → BNA 2027-01-04 17:05:00; layover at BNA: 110 minutes.
    • WN2359: BNA 2027-01-04 18:55:00 → ATL 2027-01-04 21:10:00.

2026-12-21 → 2027-01-04 · $434.75

  • Southwest Airlines WN237 / WN2405: ATL 2026-12-21 20:20:00 → ONT 2026-12-21 23:55:00; 1 stop(s) via LAS; 395 minutes. Local airport times.
    • WN237: ATL 2026-12-21 20:20:00 → LAS 2026-12-21 21:55:00; layover at LAS: 60 minutes.
    • WN2405: LAS 2026-12-21 22:55:00 → ONT 2026-12-21 23:55:00.
  • Southwest Airlines WN1729 / WN2359: ONT 2027-01-04 11:25:00 → ATL 2027-01-04 21:10:00; 1 stop(s) via BNA; 405 minutes. Local airport times.
    • WN1729: ONT 2027-01-04 11:25:00 → BNA 2027-01-04 17:05:00; layover at BNA: 110 minutes.
    • WN2359: BNA 2027-01-04 18:55:00 → ATL 2027-01-04 21:10:00.

2026-12-21 → 2027-01-04 · $511.38

  • Delta Air Lines DL830 / DL1787: ATL 2026-12-21 08:05:00 → ONT 2026-12-21 12:17:00; 1 stop(s) via SLC; 432 minutes. Local airport times.
    • DL830: ATL 2026-12-21 08:05:00 → SLC 2026-12-21 10:15:00; layover at SLC: 75 minutes.
    • DL1787: SLC 2026-12-21 11:30:00 → ONT 2026-12-21 12:17:00.
  • Delta Air Lines DL409: ONT 2027-01-04 07:05:00 → ATL 2027-01-04 14:05:00; nonstop; 240 minutes. Local airport times.

More dates for this route