Flights from Ontario to Atlanta

Our cheapest offers for flights from Ontario to Atlanta

Here you can compare cheap flights from Ontario (ONT) to Atlanta (ATL) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Atlanta. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
Ontario
Atlanta
Outbound
01/24/26
direct
DL0665
04h 10min
Return
02/20/26
direct
DL0665
04h 58min
Delta Air Lines ?
$328
Ontario
Atlanta
Outbound
04/03/26
1 Stopover (SFO)
UA1665, UA1603
07h 39min
Return
04/16/26
1 Stopover (SFO)
UA1259, UA2661
08h 50min
United Airlines ?
$482
Ontario
Atlanta
Outbound
04/03/26
1 Stopover (SFO)
UA1665, UA1603
07h 39min
Return
04/16/26
1 Stopover (SFO)
UA1259, UA2661
08h 50min
United Airlines ?
$533
Ontario
Atlanta
Outbound
04/03/26
1 Stopover (CLT)
AA1920, AA2473
06h 11min
Return
04/16/26
1 Stopover (CLT)
AA5605, AA2458
09h 03min
American Airlines ?
$649
Ontario
Atlanta
Outbound
04/03/26
1 Stopover (DEN)
F91500, F93294
21h 13min
Return
04/16/26
3 Stopovers (MTY, MEX, GDL)
AM4309, AM0965, Y40148, Y41862
29h 58min
Frontier Airlines ?
$908
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Ontario to Atlanta

Favorite airline: Frontier Airlines
The favorite airline for flights from Ontario to Atlanta is Frontier Airlines.
Frontier Airlines
77 %
United Airlines
14 %
Delta
5 %
Cheapest weekday: Monday
On this route flights are cheapest on Monday when a ticket costs $140.00 on average.
Direct flights are more expensive
On this route, direct flights are $289.00 more expensive than flights with a stopover.
non stop flight
1 stop
04h 07min
13h 05min
$ 474
$ 185
Favourite connection: via Denver
The most popular route is via Denver and is booked by 58 % of all travelers.
Route
bookings
1 stopover Denver International Airport, CO
13h 05min, from $ 185
58 %
1 stopover Las Vegas - McCarran International Airport, NV
07h 45min, from $ 240
25 %
1 stopover Houston - George Bush Intercontinental Airport, TX
08h 32min, from $ 405
10 %

Important flight information

Flight information: Ontario - Atlanta

Roundtrip from $ 327,82
Return flight duration min. 11:15
Distance 3054 km
Departure airport Airport Ontario-CA (ONT)
Arrival airport Airport Hartsfield-Jackson Atlanta International Airport, GA (ATL)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Atlanta
Flight destinations with a similar price