$124+ Cheap flights from Atlanta (ATL) to Ontario
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
Jul 28 — Aug 41
Round-trip
1 adult, Economy
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Cheapest flights from Atlanta to OntarioExplore the most affordable flight options available from Atlanta to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 28, 2026.
Explore the most affordable flight options available from Atlanta to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/85:30 am
ATL
- YTZ
1 stop11h 50m
Multiple Airlines
Sat 8/221:40 pm
YTZ
- ATL
1 stop7h 09m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:44 pm
ATL
- YYZ
1 stop23h 11m
Multiple Airlines
Thu 9/241:30 pm
YYZ
- ATL
1 stop8h 02m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:30 am
ATL
- YTZ
1 stop11h 50m
Multiple Airlines
Wed 8/51:40 pm
YTZ
- ATL
1 stop7h 59m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/206:35 am
ATL
- YYZ
2 stops10h 34m
Multiple Airlines
Wed 7/297:25 am
YYZ
- ATL
1 stop7h 28m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:30 am
ATL
- YTZ
1 stop11h 50m
Multiple Airlines
Thu 8/271:40 pm
YTZ
- ATL
1 stop7h 09m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/118:16 am
ATL
- YYZ
1 stop13h 09m
Multiple Airlines
Sun 8/167:30 am
YYZ
- ATL
1 stop15h 50m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:30 am
ATL
- YTZ
1 stop11h 50m
Multiple Airlines
Sat 8/291:40 pm
YTZ
- ATL
1 stop7h 09m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:35 am
ATL
- YYZ
1 stop10h 20m
Multiple Airlines
Wed 8/197:25 am
YYZ
- ATL
1 stop8h 15m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:16 am
ATL
- YTZ
1 stop11h 03m
Multiple Airlines
Wed 7/291:40 pm
YTZ
- ATL
1 stop7h 59m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/263:00 pm
ATL
- YYZ
1 stop9h 10m
Multiple Airlines
Fri 10/3010:15 am
YYZ
- ATL
1 stop10h 03m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:35 am
ATL
- YYZ
2 stops13h 09m
Multiple Airlines
Wed 8/127:25 am
YYZ
- ATL
1 stop7h 28m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/165:30 am
ATL
- YTZ
1 stop11h 55m
Multiple Airlines
Sat 7/251:40 pm
YTZ
- ATL
1 stop10h 09m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$324
Best flights from Atlanta to OntarioDiscover carefully curated flight deals from Atlanta to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 28, 2026.
Discover carefully curated flight deals from Atlanta to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/189:03 pm
ATL
- YTZ
1 stop15h 32m
Multiple Airlines
Wed 7/221:40 pm
YTZ
- ATL
1 stop9h 04m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:30 am
ATL
- YYZ
1 stop8h 39m
Delta
Mon 9/2110:00 am
YYZ
- ATL
1 stop9h 30m
Delta
Deal found 6/25![Delta logo]()
$514
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/182:33 pm
ATL
- YOW
2 stops8h 02m
United Airlines
Sat 8/226:25 am
YOW
- ATL
1 stop10h 43m
United Airlines
Deal found 6/22![United Airlines logo]()
$598
This Air Canada deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/58:25 am
ATL
- YSB
1 stop6h 45m
Air Canada
Tue 12/810:35 am
YSB
- ATL
2 stops10h 42m
Air Canada
Deal found 6/26![Air Canada logo]()
$734
This Kissandfly.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/165:30 am
ATL
- YTZ
1 stop11h 55m
Multiple Airlines
Mon 7/204:55 pm
YTZ
- ATL
2 stops16h 22m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:56 am
ATL
- YOW
2 stops16h 24m
Multiple Airlines
Sun 8/99:05 am
YOW
- ATL
1 stop23h 39m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:40 pm
ATL
- YOW
1 stop13h 45m
Multiple Airlines
Thu 9/102:10 pm
YOW
- ATL
1 stop11h 07m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/191:30 pm
ATL
- YYZ
1 stop10h 11m
Delta
Mon 8/246:00 am
YYZ
- ATL
1 stop9h 26m
Delta
Deal found 6/27![Delta logo]()
$600
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/201:21 pm
ATL
- YOW
1 stop8h 14m
United Airlines
Thu 9/106:00 am
YOW
- ATL
3 stops17h 26m
United Airlines
Deal found 6/26![United Airlines logo]()
$601
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:30 pm
ATL
- YYZ
1 stop8h 47m
Delta
Sun 9/1312:08 pm
YYZ
- ATL
1 stop8h 01m
Delta
Deal found 6/26![Delta logo]()
$602
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:32 pm
ATL
- YTZ
2 stops21h 12m
United Airlines
Tue 8/115:20 pm
YTZ
- ATL
2 stops20h 38m
United Airlines
Deal found 6/26![United Airlines logo]()
$604
This Air Canada deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am
ATL
- YSB
1 stop6h 45m
Air Canada
Sat 9/59:45 am
YSB
- ATL
1 stop4h 35m
Air Canada
Deal found 6/26![Air Canada logo]()
$743
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:30 am
ATL
- YUL
1 stop8h 23m
Delta
Wed 9/3012:44 pm
YUL
- ATL
Nonstop2h 46m
Delta
Deal found 6/26![Delta logo]()
$631
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:30 am
ATL
- YTZ
2 stops11h 14m
United Airlines
Fri 7/247:25 pm
YTZ
- ATL
1 stop15h 02m
United Airlines
Deal found 6/26![United Airlines logo]()
$633
This Air Canada deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2612:55 pm
ATL
- YSB
2 stops20h 14m
Air Canada
Fri 10/303:55 pm
YSB
- ATL
1 stop5h 26m
Air Canada
Deal found 6/22![Air Canada logo]()
$747
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:00 am
ATL
- YYZ
Nonstop2h 19m
Delta
Mon 9/2110:00 am
YYZ
- ATL
1 stop9h 30m
Delta
Deal found 6/27![Delta logo]()
$633
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:30 am
ATL
- YOW
1 stop4h 26m
United Airlines
Sun 8/306:00 am
YOW
- ATL
3 stops11h 23m
United Airlines
Deal found 6/26![United Airlines logo]()
$640
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:30 am
ATL
- YYZ
1 stop8h 39m
Delta
Sun 9/136:34 pm
YYZ
- ATL
Nonstop2h 21m
Delta
Deal found 6/23![Delta logo]()
$636
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:40 pm
ATL
- YTZ
1 stop25h 02m
United Airlines
Sat 8/297:25 pm
YTZ
- ATL
1 stop14h 47m
United Airlines
Deal found 6/22![United Airlines logo]()
$652
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:50 am
ATL
- YTZ
2 stops11h 49m
United Airlines
Sat 8/297:25 am
YTZ
- ATL
2 stops16h 01m
United Airlines
Deal found 6/27![United Airlines logo]()
$659
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/219:00 am
ATL
- YUL
Nonstop2h 39m
Delta
Fri 8/289:30 am
YUL
- ATL
1 stop9h 37m
Delta
Deal found 6/26![Delta logo]()
$667
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1511:08 am
ATL
- YTZ
2 stops22h 28m
United Airlines
Wed 8/1912:15 pm
YTZ
- ATL
1 stop8h 55m
United Airlines
Deal found 6/22![United Airlines logo]()
$665
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:40 pm
ATL
- YYZ
Nonstop2h 19m
Delta
Mon 9/146:34 pm
YYZ
- ATL
Nonstop2h 21m
Delta
Deal found 6/26![Delta logo]()
$679
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/185:30 am
ATL
- YTZ
2 stops16h 04m
United Airlines
Wed 7/293:15 pm
YTZ
- ATL
1 stop9h 15m
United Airlines
Deal found 6/26![United Airlines logo]()
$667
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/109:22 pm
ATL
- YUL
Nonstop2h 37m
Delta
Thu 10/812:44 pm
YUL
- ATL
Nonstop2h 51m
Delta
Deal found 6/27![Delta logo]()
$679
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/185:30 am
ATL
- YTZ
2 stops11h 14m
United Airlines
Tue 7/283:15 pm
YTZ
- ATL
1 stop9h 15m
United Airlines
Deal found 6/26![United Airlines logo]()
$667
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:30 pm
ATL
- YYZ
1 stop9h 09m
Delta
Sun 9/136:15 am
YYZ
- ATL
Nonstop2h 27m
Delta
Deal found 6/25![Delta logo]()
$680
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:50 am
ATL
- YOW
2 stops7h 20m
United Airlines
Sun 10/255:10 am
YOW
- ATL
1 stop6h 36m
United Airlines
Deal found 6/27![United Airlines logo]()
$674
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/52:39 pm
ATL
- YYZ
1 stop7h 16m
Delta
Sat 8/86:00 am
YYZ
- ATL
Nonstop2h 16m
Delta
Deal found 6/22![Delta logo]()
$686
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:25 am
ATL
- YTZ
1 stop9h 21m
United Airlines
Thu 8/133:15 pm
YTZ
- ATL
1 stop9h 30m
United Airlines
Deal found 6/27![United Airlines logo]()
$680
Last-minute flights from Atlanta to OntarioDiscover last-minute flight deals from Atlanta to Ontario. Data last updated June 28, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Ontario. Data last updated June 28, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/149:17 pm
ATL
- YTZ
1 stop15h 18m
Multiple Airlines
Thu 7/168:55 am
YTZ
- ATL
1 stop12h 30m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/159:03 pm
ATL
- YTZ
1 stop20h 22m
Multiple Airlines
Wed 7/221:40 pm
YTZ
- ATL
1 stop9h 04m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:05 am
ATL
- YTZ
1 stop7h 54m
Multiple Airlines
Tue 7/211:40 pm
YTZ
- ATL
1 stop9h 04m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/165:30 am
ATL
- YTZ
1 stop11h 55m
Multiple Airlines
Sat 7/251:40 pm
YTZ
- ATL
1 stop10h 09m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/185:01 am
ATL
- YTZ
1 stop7h 58m
Multiple Airlines
Wed 7/298:50 am
YTZ
- ATL
1 stop6h 03m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/195:30 am
ATL
- YTZ
1 stop11h 55m
Multiple Airlines
Sat 7/251:40 pm
YTZ
- ATL
1 stop10h 09m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/206:35 am
ATL
- YYZ
2 stops10h 34m
Multiple Airlines
Wed 7/297:25 am
YYZ
- ATL
1 stop7h 28m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:16 am
ATL
- YTZ
1 stop11h 03m
Multiple Airlines
Wed 7/291:40 pm
YTZ
- ATL
1 stop7h 59m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:05 am
ATL
- YYZ
1 stop6h 55m
Multiple Airlines
Tue 7/289:30 am
YYZ
- ATL
1 stop13h 50m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:05 am
ATL
- YTZ
1 stop7h 54m
Multiple Airlines
Wed 7/291:40 pm
YTZ
- ATL
1 stop9h 04m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/259:03 pm
ATL
- YTZ
1 stop15h 32m
Multiple Airlines
Wed 7/291:40 pm
YTZ
- ATL
1 stop9h 04m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:16 am
ATL
- YTZ
2 stops13h 37m
Multiple Airlines
Wed 7/291:40 pm
YTZ
- ATL
1 stop7h 59m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$327
One-way flights from Atlanta to OntarioSearch for one-way flight options from Atlanta to Ontario. Find affordable one-way fares based on user searches. Data last updated June 28, 2026.
Search for one-way flight options from Atlanta to Ontario. Find affordable one-way fares based on user searches. Data last updated June 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/910:42 pm
ATL
- YOW
1 stop16h 13m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:05 am
ATL
- YUL
1 stop9h 10m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:05 am
ATL
- YUL
1 stop13h 10m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:05 am
ATL
- YOW
1 stop11h 58m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$160
This Trip.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/185:01 am
ATL
- YUL
1 stop13h 14m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:05 am
ATL
- YUL
1 stop13h 10m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:05 am
ATL
- YUL
1 stop9h 10m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:01 am
ATL
- YUL
2 stops31h 09m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:53 pm
ATL
- YOW
1 stop19h 27m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:18 am
ATL
- YOW
1 stop8h 05m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$191
This Trip.com deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:40 pm
ATL
- YOW
1 stop13h 45m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:40 pm
ATL
- YYZ
2 stops18h 29m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$209
Find flight deals from Atlanta to Ontario
Keep the following information in mind while searching for Atlanta to Ontario flight deals. Data was last updated June 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $318 (Kiwi.com) |
One-way from | $124 (Kiwi.com) |
Popular in | July |
Cheapest in | November |
Average price | $624 |
Good round-trip deal | $679 or less |
Good one-way deal | $298 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Atlanta to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 28, 2026.
Use the filters below to find and compare flights from Atlanta to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
AtlantaToronto
ATL - YTZ
ATLYTZ
Atlanta Hartsfield-Jackson
Sat 7/18
9:03 pm-12:35 pm
1 stop15h 32m
Toronto Island
Wed 7/22
1:40 pm-10:44 pm
1 stop9h 04m
$324
AtlantaToronto
ATL - YTZ
ATLYTZ
Atlanta Hartsfield-Jackson
Thu 7/16
5:30 am-5:25 pm
1 stop11h 55m
Toronto Island
Mon 7/20
4:55 pm-9:17 am
2 stops16h 22m
$378
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Wed 8/5
7:56 am-12:20 am
2 stops16h 24m
Ottawa
Sun 8/9
9:05 am-8:44 am
1 stop23h 39m
$398
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Thu 8/20
10:40 pm-12:25 pm
1 stop13h 45m
Ottawa
Thu 9/10
2:10 pm-1:17 am
1 stop11h 07m
$454
AtlantaToronto
ATL - YYZ
ATLYYZ
Atlanta Hartsfield-Jackson
Wed 9/16
9:30 am-6:09 pm
1 stop8h 39m
Toronto Pearson Intl
Mon 9/21
10:00 am-7:30 pm
1 stop9h 30m
$514
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Tue 8/18
2:33 pm-10:35 pm
2 stops8h 02m
Ottawa
Sat 8/22
6:25 am-5:08 pm
1 stop10h 43m
$598
AtlantaToronto
ATL - YYZ
ATLYYZ
Atlanta Hartsfield-Jackson
Wed 8/19
1:30 pm-11:41 pm
1 stop10h 11m
Toronto Pearson Intl
Mon 8/24
6:00 am-3:26 pm
1 stop9h 26m
$600
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Thu 8/20
1:21 pm-9:35 pm
1 stop8h 14m
Ottawa
Thu 9/10
6:00 am-11:26 pm
3 stops17h 26m
$601
AtlantaToronto
ATL - YYZ
ATLYYZ
Atlanta Hartsfield-Jackson
Wed 9/9
12:30 pm-9:17 pm
1 stop8h 47m
Toronto Pearson Intl
Sun 9/13
12:08 pm-8:09 pm
1 stop8h 01m
$602
AtlantaToronto
ATL - YTZ
ATLYTZ
Atlanta Hartsfield-Jackson
Tue 8/4
7:32 pm-4:44 pm
2 stops21h 12m
Toronto Island
Tue 8/11
5:20 pm-1:58 pm
2 stops20h 38m
$604
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Atlanta to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Atlanta with our price prediction graph.
ATL-YOW
ATL-YYZ
ATL-YUL
ATL-YTZ
ATL-YSB
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Atlanta to Ontario
ATL-CAON
ATL-YOW
ATL-YYZ
ATL-YUL
ATL-YTZ
What is the cheapest month to book a flight from Atlanta to Region of Ontario?
Currently, August is the cheapest month in which you can book a flight from Atlanta to Region of Ontario (average of $55). Flying from Atlanta to Region of Ontario in March is currently the most expensive (average of $247). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ATL to ON?
Find hourly flight availability from Atlanta to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 28, 2026.
When flying from Atlanta to Region of Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 37% versus a flight in the morning.
Weekly flight availability from Atlanta to Region of Ontario
Explore weekly flight availability from Atlanta to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 28, 2026.
The most flights from ATL to CAON are scheduled on a Friday (22 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (19 on average).
How much does it cost to fly round-trip from Atlanta to Region of Ontario?
How far ahead should I book a flight from Atlanta to Region of Ontario?
The best time to book flights from Atlanta to Region of Ontario is 71 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Atlanta to Region of Ontario?
Use this chart to determine the cheapest time to fly round-trip from Atlanta to Ontario. Price data was last updated on June 27, 2026.
Travelers seeking maximum savings on their Atlanta to Region of Ontario flight should consider departing on Monday at noon when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated June 28, 2026.
See what other customers who have flown with Delta,United Airlines, andWestJet from Atlanta to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Related info for your journey
Find useful and relevant information for your journey from Atlanta to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Atlanta to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Atlanta to Ontario by cabin class
Find flights from Atlanta to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Atlanta and Ontario flights
Browse other Atlanta and Ontario flight options. Last updated on June 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Atlanta to Ontario
Discover the top 4 airlines that operate flights from Atlanta to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$186 | Average$569 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$265 | Average$624 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$279 | Average$691 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$286 | Average$579 | FlexibilityNo cancel fee | On-time69% |