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Route overview: Atlanta to Ontario (ONT) flight deals

Atlanta → Ontario

Dec 4, 2026 · return Dec 13, 2026

ATL → ONT1 adulteconomyRound trip

8 flight options · 4 airlines

Nonstop flights

Fri, Dec 4 – Sun, Dec 13

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

Fri, Dec 4 – Sun, Dec 13

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

One-stop flights

Fri, Dec 4 – Sun, Dec 13

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

Fri, Dec 4 – Sun, Dec 13

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

Fri, Dec 4 – Sun, Dec 13

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

Fri, Dec 4 – Sun, Dec 13

Southwest Airlines
8:20 pmATL
6h 35m
LAS · 1h
11:55 pmONT
Southwest Airlines
12:40 pmONT
6h
HOU · 1h
9:40 pmATL

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Sun, Dec 13

Southwest Airlines
6:15 amATL
7h 30m
DAL · 2h 10m
10:45 amONT
Southwest Airlines
12:40 pmONT
6h
HOU · 1h
9:40 pmATL

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Sun, Dec 13

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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Explore this route

All dates for this routeDec 3, 2026 → Dec 12, 2026Dec 5, 2026 → Dec 14, 2026
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.

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

Route overview: Atlanta to Ontario (ONT) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-04 → 2026-12-13Delta Air LinesDL665 / DL409$465.002026-10-29T00:45:42Z
2026-12-04 → 2026-12-13Frontier Airlines / Southwest AirlinesF92495 + F91405 / WN1558 + WN251$287.502026-10-29T00:45:42Z
2026-12-04 → 2026-12-13Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251$370.002026-10-29T00:45:42Z
2026-12-04 → 2026-12-13American AirlinesAA593 + AA1841 / AA1591 + AA593$395.002026-10-29T00:45:42Z
2026-12-04 → 2026-12-13Delta Air LinesDL779 / DL409$465.002026-10-29T00:45:42Z
2026-12-04 → 2026-12-13Southwest AirlinesWN237 + WN2405 / WN1558 + WN251$370.002026-10-29T00:45:42Z
2026-12-04 → 2026-12-13Southwest AirlinesWN4455 + WN3819 / WN1558 + WN251$370.002026-10-29T00:45:42Z
2026-12-04 → 2026-12-13Delta Air LinesDL830 + DL1787 / DL409$440.002026-10-29T00:45:42Z

2026-12-04 → 2026-12-13 · $465.00

  • Delta Air Lines DL665: ATL 2026-12-04 09:18:00 → ONT 2026-12-04 11:07:00; nonstop; 289 minutes. Local airport times.
  • Delta Air Lines DL409: ONT 2026-12-13 07:05:00 → ATL 2026-12-13 14:05:00; nonstop; 240 minutes. Local airport times.

2026-12-04 → 2026-12-13 · $287.50

  • Frontier Airlines F92495 / F91405: ATL 2026-12-04 13:55:00 → ONT 2026-12-04 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2026-12-04 13:55:00 → DFW 2026-12-04 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2026-12-04 16:58:00 → ONT 2026-12-04 18:15:00.
  • Southwest Airlines WN1558 / WN251: ONT 2026-12-13 12:40:00 → ATL 2026-12-13 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2026-12-13 12:40:00 → HOU 2026-12-13 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2026-12-13 18:40:00 → ATL 2026-12-13 21:40:00.

2026-12-04 → 2026-12-13 · $370.00

  • Southwest Airlines WN3330 / WN2484: ATL 2026-12-04 10:05:00 → ONT 2026-12-04 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2026-12-04 10:05:00 → DEN 2026-12-04 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2026-12-04 12:45:00 → ONT 2026-12-04 14:05:00.
  • Southwest Airlines WN1558 / WN251: ONT 2026-12-13 12:40:00 → ATL 2026-12-13 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2026-12-13 12:40:00 → HOU 2026-12-13 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2026-12-13 18:40:00 → ATL 2026-12-13 21:40:00.

2026-12-04 → 2026-12-13 · $395.00

  • American Airlines AA593 / AA1841: ATL 2026-12-04 17:40:00 → ONT 2026-12-04 21:52:00; 1 stop(s) via PHX; 432 minutes. Local airport times.
    • AA593: ATL 2026-12-04 17:40:00 → PHX 2026-12-04 19:53:00; layover at PHX: 102 minutes.
    • AA1841: PHX 2026-12-04 21:35:00 → ONT 2026-12-04 21:52:00.
  • American Airlines AA1591 / AA593: ONT 2026-12-13 06:20:00 → ATL 2026-12-13 15:33:00; 1 stop(s) via PHX; 373 minutes. Local airport times.
    • AA1591: ONT 2026-12-13 06:20:00 → PHX 2026-12-13 08:48:00; layover at PHX: 66 minutes.
    • AA593: PHX 2026-12-13 09:54:00 → ATL 2026-12-13 15:33:00.

2026-12-04 → 2026-12-13 · $465.00

  • Delta Air Lines DL779: ATL 2026-12-04 19:15:00 → ONT 2026-12-04 20:54:00; nonstop; 279 minutes. Local airport times.
  • Delta Air Lines DL409: ONT 2026-12-13 07:05:00 → ATL 2026-12-13 14:05:00; nonstop; 240 minutes. Local airport times.

2026-12-04 → 2026-12-13 · $370.00

  • Southwest Airlines WN237 / WN2405: ATL 2026-12-04 20:20:00 → ONT 2026-12-04 23:55:00; 1 stop(s) via LAS; 395 minutes. Local airport times.
    • WN237: ATL 2026-12-04 20:20:00 → LAS 2026-12-04 21:55:00; layover at LAS: 60 minutes.
    • WN2405: LAS 2026-12-04 22:55:00 → ONT 2026-12-04 23:55:00.
  • Southwest Airlines WN1558 / WN251: ONT 2026-12-13 12:40:00 → ATL 2026-12-13 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2026-12-13 12:40:00 → HOU 2026-12-13 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2026-12-13 18:40:00 → ATL 2026-12-13 21:40:00.

2026-12-04 → 2026-12-13 · $370.00

  • Southwest Airlines WN4455 / WN3819: ATL 2026-12-04 06:15:00 → ONT 2026-12-04 10:45:00; 1 stop(s) via DAL; 450 minutes. Local airport times.
    • WN4455: ATL 2026-12-04 06:15:00 → DAL 2026-12-04 07:30:00; layover at DAL: 130 minutes.
    • WN3819: DAL 2026-12-04 09:40:00 → ONT 2026-12-04 10:45:00.
  • Southwest Airlines WN1558 / WN251: ONT 2026-12-13 12:40:00 → ATL 2026-12-13 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2026-12-13 12:40:00 → HOU 2026-12-13 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2026-12-13 18:40:00 → ATL 2026-12-13 21:40:00.

2026-12-04 → 2026-12-13 · $440.00

  • Delta Air Lines DL830 / DL1787: ATL 2026-12-04 08:05:00 → ONT 2026-12-04 12:17:00; 1 stop(s) via SLC; 432 minutes. Local airport times.
    • DL830: ATL 2026-12-04 08:05:00 → SLC 2026-12-04 10:15:00; layover at SLC: 75 minutes.
    • DL1787: SLC 2026-12-04 11:30:00 → ONT 2026-12-04 12:17:00.
  • Delta Air Lines DL409: ONT 2026-12-13 07:05:00 → ATL 2026-12-13 14:05:00; nonstop; 240 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Atlanta (ATL) to Ontario (ONT) · Dec 4, 2026 · return Dec 13, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • 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.