Travel with Axel,
get the best price.

Atlanta → Ontario

Aug 21, 2027 · return Aug 28, 2027

ATL → ONT1 adulteconomyRound trip

8 flight options · 4 airlines

Nonstop flights

Sat, Aug 21 – Sat, Aug 28

Delta Air Lines
9:18 amATL
4h 49m
Nonstop
11:07 amONT
Delta Air Lines
7:06 amONT
4h 7m
Nonstop
2:13 pmATL

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

Delta Air Lines
7:15 pmATL
4h 39m
Nonstop
8:54 pmONT
Delta Air Lines
7:06 amONT
4h 7m
Nonstop
2:13 pmATL

Round-trip total · 1 adult · Taxes included

One-stop flights

Sat, Aug 21 – Sat, Aug 28

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

Sat, Aug 21 – Sat, Aug 28

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

Sat, Aug 21 – Sat, Aug 28

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

Sat, Aug 21 – Sat, Aug 28

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

Sat, Aug 21 – Sat, Aug 28

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

Sat, Aug 21 – Sat, Aug 28

Delta Air Lines
8:05 amATL
7h 12m
SLC · 1h 15m
12:17 pmONT
Delta Air Lines
7:06 amONT
4h 7m
Nonstop
2:13 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.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Delta Air Lines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

All dates for this routeNov 5, 2026 → Nov 8, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Dec 5, 2026 → Dec 12, 2026Dec 17, 2026 → Dec 20, 2026Dec 26, 2026 → Jan 2, 2027Jan 5, 2027 · One wayJan 16, 2027 → Jan 23, 2027Feb 5, 2027 → Feb 8, 2027Apr 3, 2027 → Apr 10, 2027Jun 26, 2027 → Jul 3, 2027Sep 17, 2027 → Sep 20, 2027
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)
2027-08-21 → 2027-08-28Delta Air LinesDL665 / DL409$515.002026-10-29T00:45:42Z
2027-08-21 → 2027-08-28Frontier Airlines / Delta Air LinesF92495 + F91405 / DL409$385.002026-10-29T00:45:42Z
2027-08-21 → 2027-08-28Southwest AirlinesWN4455 + WN3819 / WN1558 + WN251$425.002026-10-29T00:45:42Z
2027-08-21 → 2027-08-28American AirlinesAA593 + AA1841 / AA1591 + AA593$445.002026-10-29T00:45:42Z
2027-08-21 → 2027-08-28Delta Air LinesDL779 / DL409$515.002026-10-29T00:45:42Z
2027-08-21 → 2027-08-28Southwest AirlinesWN237 + WN2405 / WN1558 + WN251$425.002026-10-29T00:45:42Z
2027-08-21 → 2027-08-28Southwest AirlinesWN3330 + WN2484 / WN1558 + WN251$425.002026-10-29T00:45:42Z
2027-08-21 → 2027-08-28Delta Air LinesDL830 + DL1787 / DL409$490.002026-10-29T00:45:42Z

2027-08-21 → 2027-08-28 · $515.00

  • Delta Air Lines DL665: ATL 2027-08-21 09:18:00 → ONT 2027-08-21 11:07:00; nonstop; 289 minutes. Local airport times.
  • Delta Air Lines DL409: ONT 2027-08-28 07:06:00 → ATL 2027-08-28 14:13:00; nonstop; 247 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $385.00

  • Frontier Airlines F92495 / F91405: ATL 2027-08-21 13:55:00 → ONT 2027-08-21 18:15:00; 1 stop(s) via DFW; 440 minutes. Local airport times.
    • F92495: ATL 2027-08-21 13:55:00 → DFW 2027-08-21 15:34:00; layover at DFW: 84 minutes.
    • F91405: DFW 2027-08-21 16:58:00 → ONT 2027-08-21 18:15:00.
  • Delta Air Lines DL409: ONT 2027-08-28 07:06:00 → ATL 2027-08-28 14:13:00; nonstop; 247 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $425.00

  • Southwest Airlines WN4455 / WN3819: ATL 2027-08-21 06:15:00 → ONT 2027-08-21 10:45:00; 1 stop(s) via DAL; 450 minutes. Local airport times.
    • WN4455: ATL 2027-08-21 06:15:00 → DAL 2027-08-21 07:30:00; layover at DAL: 130 minutes.
    • WN3819: DAL 2027-08-21 09:40:00 → ONT 2027-08-21 10:45:00.
  • Southwest Airlines WN1558 / WN251: ONT 2027-08-28 12:40:00 → ATL 2027-08-28 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2027-08-28 12:40:00 → HOU 2027-08-28 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2027-08-28 18:40:00 → ATL 2027-08-28 21:40:00.

2027-08-21 → 2027-08-28 · $445.00

  • American Airlines AA593 / AA1841: ATL 2027-08-21 17:40:00 → ONT 2027-08-21 21:52:00; 1 stop(s) via PHX; 432 minutes. Local airport times.
    • AA593: ATL 2027-08-21 17:40:00 → PHX 2027-08-21 18:53:00; layover at PHX: 102 minutes.
    • AA1841: PHX 2027-08-21 20:35:00 → ONT 2027-08-21 21:52:00.
  • American Airlines AA1591 / AA593: ONT 2027-08-28 06:20:00 → ATL 2027-08-28 15:33:00; 1 stop(s) via PHX; 373 minutes. Local airport times.
    • AA1591: ONT 2027-08-28 06:20:00 → PHX 2027-08-28 07:48:00; layover at PHX: 66 minutes.
    • AA593: PHX 2027-08-28 08:54:00 → ATL 2027-08-28 15:33:00.

2027-08-21 → 2027-08-28 · $515.00

  • Delta Air Lines DL779: ATL 2027-08-21 19:15:00 → ONT 2027-08-21 20:54:00; nonstop; 279 minutes. Local airport times.
  • Delta Air Lines DL409: ONT 2027-08-28 07:06:00 → ATL 2027-08-28 14:13:00; nonstop; 247 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $425.00

  • Southwest Airlines WN237 / WN2405: ATL 2027-08-21 20:20:00 → ONT 2027-08-21 23:55:00; 1 stop(s) via LAS; 395 minutes. Local airport times.
    • WN237: ATL 2027-08-21 20:20:00 → LAS 2027-08-21 21:55:00; layover at LAS: 60 minutes.
    • WN2405: LAS 2027-08-21 22:55:00 → ONT 2027-08-21 23:55:00.
  • Southwest Airlines WN1558 / WN251: ONT 2027-08-28 12:40:00 → ATL 2027-08-28 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2027-08-28 12:40:00 → HOU 2027-08-28 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2027-08-28 18:40:00 → ATL 2027-08-28 21:40:00.

2027-08-21 → 2027-08-28 · $425.00

  • Southwest Airlines WN3330 / WN2484: ATL 2027-08-21 10:05:00 → ONT 2027-08-21 14:05:00; 1 stop(s) via DEN; 420 minutes. Local airport times.
    • WN3330: ATL 2027-08-21 10:05:00 → DEN 2027-08-21 11:35:00; layover at DEN: 70 minutes.
    • WN2484: DEN 2027-08-21 12:45:00 → ONT 2027-08-21 14:05:00.
  • Southwest Airlines WN1558 / WN251: ONT 2027-08-28 12:40:00 → ATL 2027-08-28 21:40:00; 1 stop(s) via HOU; 360 minutes. Local airport times.
    • WN1558: ONT 2027-08-28 12:40:00 → HOU 2027-08-28 17:40:00; layover at HOU: 60 minutes.
    • WN251: HOU 2027-08-28 18:40:00 → ATL 2027-08-28 21:40:00.

2027-08-21 → 2027-08-28 · $490.00

  • Delta Air Lines DL830 / DL1787: ATL 2027-08-21 08:05:00 → ONT 2027-08-21 12:17:00; 1 stop(s) via SLC; 432 minutes. Local airport times.
    • DL830: ATL 2027-08-21 08:05:00 → SLC 2027-08-21 10:15:00; layover at SLC: 75 minutes.
    • DL1787: SLC 2027-08-21 11:30:00 → ONT 2027-08-21 12:17:00.
  • Delta Air Lines DL409: ONT 2027-08-28 07:06:00 → ATL 2027-08-28 14:13:00; nonstop; 247 minutes. Local airport times.

More dates for this route