Ontario to Atlanta flights
The cheapest round trip we found from Ontario to Atlanta is $214 (Dec 2 – 6, 1 stop), 9% below the usual $236.
ONT to ATL · Round trip · Economy · Prices per person in USD · Price found (1 day ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $254 |
| December 2026 | $214 (cheapest month) |
| January 2027 | No fares found yet |
| February 2027 | $219 |
| March 2027 | No fares found yet |
| April 2027 | No fares found yet |
| May 2027 | $459 |
Cheapest dates in the next 4 months
Round trip, per person-
Dec 2 – 6 4 nights · leave Wed$214 −9% vs usual$214 −9% vs usual Book
Frontier Airlines 1 stop · 5h 14m -
Feb 3 – 7, 2027 4 nights · leave Wed$219 −7% vs usual$219 −7% vs usual Book
Frontier Airlines 1 stop · 5h 27m
-
Dec 16 – 19 3 nights · leave Wed$223 −6% vs usual$223 −6% vs usual Book
Frontier Airlines 1 stop · 5h 22m
-
Dec 15 – 17 2 nights · leave Tue$226$226 Book
Frontier Airlines 1 stop · 5h 20m
-
Dec 3 – 6 3 nights · leave Thu$232$232 Book
Frontier Airlines 2 stops · 6h 31m
-
Dec 13 – 16 3 nights · leave Sun$248 +5% vs usual$248 +5% vs usual Book
Frontier Airlines 1 stop · 6h 21m
-
Nov 18 – 25 7 nights · leave Wed$254 +8% vs usual$254 +8% vs usual Book
Frontier Airlines 1 stop · 5h 14m
-
Feb 4 – 7, 2027 3 nights · leave Thu$267 +13% vs usual$267 +13% vs usual Book
Frontier Airlines 1 stop · 5h 09m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
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Good to know
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Ontario to Atlanta: questions
How much does a flight from Ontario to Atlanta cost?
The cheapest round trip we have found right now is $214, leaving December 2 and returning December 6. The usual price on this route is about $236, so this fare is 9% less. Prices are per person, economy, in USD.
What is the cheapest month to fly from Ontario to Atlanta?
December 2026, with round trips from $214. The most expensive month in our data is May (from $459). Based on the 4 months ahead we have prices for.
Which airports do Ontario to Atlanta flights use?
Ontario airports include Ontario International (ONT). Atlanta airports include Hartsfield-Jackson Atlanta International (ATL) and DeKalb Peachtree (PDK). The prices on this page cover every airport in both cities (ONT and ATL are the city codes).
About this route
We track round-trip economy fares from Ontario (United States) to Atlanta (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $214, departing December 2 and returning December 6, about 9% below the usual $236. Right now we're following 10 upcoming date combinations on this route. The cheapest month to fly in our data is December, from $214. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.