$159+ 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
Jul 13 — Jul 201
Round-trip
1 adult, Economy
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Find cheap flights from Atlanta to Ontario with Cheapflights
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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 13, 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 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 8/115:30 am
ATL
- YTZ
1 stop11h 50m
Multiple Airlines
Wed 8/121:40 pm
YTZ
- ATL
1 stop10h 09m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 10/147:00 am
ATL
- YTZ
1 stop7h 25m
Multiple Airlines
Mon 10/198:40 pm
YTZ
- ATL
1 stop15h 45m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/136:35 am
ATL
- YYZ
1 stop14h 20m
Multiple Airlines
Tue 7/146:30 am
YYZ
- ATL
1 stop16h 50m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/45:01 am
ATL
- YTZ
1 stop7h 58m
Multiple Airlines
Wed 7/88:50 am
YTZ
- ATL
1 stop6h 23m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/66:35 am
ATL
- YYZ
1 stop10h 20m
Multiple Airlines
Thu 7/96:30 am
YYZ
- ATL
1 stop7h 34m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 8/198:17 am
ATL
- YTZ
1 stop9h 03m
Multiple Airlines
Tue 9/110:05 am
YTZ
- ATL
1 stop7h 12m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/66:35 am
ATL
- YYZ
1 stop10h 20m
Multiple Airlines
Tue 7/146:30 am
YYZ
- ATL
1 stop7h 34m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/15:40 am
ATL
- YTZ
1 stop11h 45m
Multiple Airlines
Tue 7/71:45 pm
YTZ
- ATL
1 stop19h 37m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 8/185:05 am
ATL
- YTZ
1 stop7h 52m
Multiple Airlines
Tue 9/110:05 am
YTZ
- ATL
1 stop7h 12m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 6/309:00 pm
ATL
- YTZ
1 stop15h 35m
Multiple Airlines
Tue 7/71:45 pm
YTZ
- ATL
1 stop19h 37m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 9/174:21 pm
ATL
- YYZ
1 stop28h 34m
Multiple Airlines
Thu 9/241:30 pm
YYZ
- ATL
1 stop19h 41m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 8/195:05 am
ATL
- YTZ
1 stop7h 52m
Multiple Airlines
Mon 8/241:40 pm
YTZ
- ATL
1 stop20h 01m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$345
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 13, 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 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/9. 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
Thu 7/168:50 am
YTZ
- ATL
1 stop5h 56m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$380
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Sun 7/198:07 am
ATL
- YOW
1 stop9h 00m
United Airlines
Sun 7/197:30 pm
YOW
- ATL
1 stop5h 00m
United Airlines
Deal found 6/8![United Airlines logo]()
$561
This Delta deal was found by Cheapflights users on 6/11. 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 10/82:30 pm
ATL
- YYZ
1 stop8h 43m
Delta
Tue 10/132:10 pm
YYZ
- ATL
1 stop9h 00m
Delta
Deal found 6/11![Delta logo]()
$571
This Air Canada deal was found by Cheapflights users on 6/9. 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.
Wed 10/217:00 am
ATL
- YSB
1 stop6h 45m
Air Canada
Thu 10/229:45 am
YSB
- ATL
1 stop4h 30m
Air Canada
Deal found 6/9![Air Canada logo]()
$715
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/58:59 pm
ATL
- YTZ
1 stop16h 06m
Multiple Airlines
Mon 7/136:05 pm
YTZ
- ATL
1 stop20h 41m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 7/115:01 am
ATL
- YTZ
1 stop27h 58m
Multiple Airlines
Sat 7/181:40 pm
YTZ
- ATL
1 stop8h 00m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$409
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
Fri 7/1010:48 pm
ATL
- YOW
2 stops20h 56m
Multiple Airlines
Fri 7/177:00 am
YOW
- ATL
1 stop10h 09m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$410
This Delta deal was found by Cheapflights users on 6/12. 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 9/233:30 pm
ATL
- YYZ
1 stop8h 09m
Delta
Sun 9/2711:38 am
YYZ
- ATL
Nonstop2h 16m
Delta
Deal found 6/12![Delta logo]()
$571
This United Airlines deal was found by Cheapflights users on 6/8. 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 9/108:00 am
ATL
- YYZ
1 stop10h 30m
United Airlines
Sun 9/139:00 pm
YYZ
- ATL
1 stop13h 12m
United Airlines
Deal found 6/8![United Airlines logo]()
$596
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 7/205:30 am
ATL
- YTZ
1 stop11h 55m
Multiple Airlines
Mon 7/278:55 am
YTZ
- ATL
2 stops9h 42m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 6/12. 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 9/91:30 pm
ATL
- YYZ
1 stop9h 52m
Delta
Sun 9/136:15 am
YYZ
- ATL
1 stop8h 24m
Delta
Deal found 6/12![Delta logo]()
$586
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/1110:05 am
ATL
- YTZ
1 stop24h 02m
United Airlines
Sat 8/153:15 pm
YTZ
- ATL
1 stop9h 30m
United Airlines
Deal found 6/11![United Airlines logo]()
$597
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/18:23 am
ATL
- YTZ
1 stop9h 02m
Multiple Airlines
Sat 7/48:55 am
YTZ
- ATL
2 stops14h 10m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$461
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/57:32 pm
ATL
- YTZ
2 stops16h 02m
United Airlines
Mon 8/105:20 pm
YTZ
- ATL
2 stops20h 38m
United Airlines
Deal found 6/12![United Airlines logo]()
$604
This Delta deal was found by Cheapflights users on 6/13. 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.
Mon 9/79:15 pm
ATL
- YUL
Nonstop2h 37m
Delta
Tue 9/152:25 pm
YUL
- ATL
1 stop8h 40m
Delta
Deal found 6/13![Delta logo]()
$605
This Air Canada deal was found by Cheapflights users on 6/9. 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 6/9![Air Canada logo]()
$734
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/1711:08 am
ATL
- YYZ
1 stop8h 29m
United Airlines
Wed 8/198:05 am
YYZ
- ATL
1 stop9h 18m
United Airlines
Deal found 6/8![United Airlines logo]()
$609
This Delta deal was found by Cheapflights users on 6/10. 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 8/269:30 am
ATL
- YUL
1 stop9h 24m
Delta
Sat 8/292:46 pm
YUL
- ATL
Nonstop3h 00m
Delta
Deal found 6/10![Delta logo]()
$611
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 6/259:05 pm
ATL
- YTZ
1 stop20h 55m
Multiple Airlines
Sat 6/278:50 am
YTZ
- ATL
1 stop6h 21m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$536
This United Airlines deal was found by Cheapflights users on 6/8. 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 9/161:21 pm
ATL
- YTZ
1 stop20h 45m
United Airlines
Sat 9/197:20 pm
YTZ
- ATL
1 stop16h 59m
United Airlines
Deal found 6/8![United Airlines logo]()
$613
This Delta deal was found by Cheapflights users on 6/10. 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 9/107:30 am
ATL
- YYZ
1 stop8h 33m
Delta
Sun 9/136:15 am
YYZ
- ATL
Nonstop2h 23m
Delta
Deal found 6/10![Delta logo]()
$622
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/238:44 pm
ATL
- YOW
2 stops16h 26m
United Airlines
Sun 7/265:10 am
YOW
- ATL
2 stops8h 34m
United Airlines
Deal found 6/9![United Airlines logo]()
$620
This Delta deal was found by Cheapflights users on 6/8. 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 9/238:05 am
ATL
- YYZ
Nonstop2h 18m
Delta
Wed 9/306:15 am
YYZ
- ATL
Nonstop2h 27m
Delta
Deal found 6/8![Delta logo]()
$654
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Fri 6/1910:42 pm
ATL
- YOW
1 stop16h 18m
Multiple Airlines
Tue 6/232:20 pm
YOW
- ATL
1 stop18h 26m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$625
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/298:44 pm
ATL
- YOW
2 stops16h 26m
United Airlines
Mon 8/312:00 pm
YOW
- ATL
2 stops12h 30m
United Airlines
Deal found 6/9![United Airlines logo]()
$644
This Delta deal was found by Cheapflights users on 6/8. 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 9/49:35 pm
ATL
- YYZ
Nonstop2h 22m
Delta
Mon 9/76:34 pm
YYZ
- ATL
Nonstop2h 30m
Delta
Deal found 6/8![Delta logo]()
$654
This United deal was found by Cheapflights users on 6/9. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/172:33 pm
ATL
- YOW
2 stops8h 02m
Multiple Airlines
Fri 8/2111:15 am
YOW
- ATL
1 stop5h 04m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$633
This United Airlines deal was found by Cheapflights users on 6/12. 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 9/178:00 am
ATL
- YYZ
1 stop9h 01m
United Airlines
Sun 9/202:00 pm
YYZ
- ATL
1 stop9h 26m
United Airlines
Deal found 6/12![United Airlines logo]()
$667
This Delta deal was found by Cheapflights users on 6/12. 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.
Sat 11/289:50 pm
ATL
- YYZ
Nonstop2h 11m
Delta
Wed 12/96:00 pm
YYZ
- ATL
Nonstop2h 33m
Delta
Deal found 6/12![Delta logo]()
$669
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/15:30 am
ATL
- YUL
2 stops11h 54m
United Airlines
Fri 8/71:10 pm
YUL
- ATL
2 stops11h 20m
United Airlines
Deal found 6/11![United Airlines logo]()
$668
Last-minute flights from Atlanta to OntarioDiscover last-minute flight deals from Atlanta to Ontario. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Ontario. Data last updated June 13, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 6/309:00 pm
ATL
- YTZ
1 stop15h 35m
Multiple Airlines
Tue 7/71:45 pm
YTZ
- ATL
1 stop19h 37m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/15:40 am
ATL
- YTZ
1 stop11h 45m
Multiple Airlines
Tue 7/71:45 pm
YTZ
- ATL
1 stop19h 37m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/18:23 am
ATL
- YTZ
1 stop9h 02m
Multiple Airlines
Fri 7/36:05 pm
YTZ
- ATL
1 stop15h 01m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/45:01 am
ATL
- YTZ
1 stop7h 58m
Multiple Airlines
Wed 7/88:50 am
YTZ
- ATL
1 stop6h 23m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/66:35 am
ATL
- YYZ
1 stop10h 20m
Multiple Airlines
Thu 7/96:30 am
YYZ
- ATL
1 stop7h 34m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/66:35 am
ATL
- YYZ
1 stop10h 20m
Multiple Airlines
Tue 7/146:30 am
YYZ
- ATL
1 stop7h 34m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/610:48 pm
ATL
- YYZ
1 stop15h 17m
Multiple Airlines
Thu 7/166:30 am
YYZ
- ATL
1 stop16h 50m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/610:48 pm
ATL
- YYZ
1 stop15h 17m
Multiple Airlines
Fri 7/315:50 pm
YYZ
- ATL
1 stop6h 37m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/136:35 am
ATL
- YYZ
1 stop14h 20m
Multiple Airlines
Tue 7/146:30 am
YYZ
- ATL
1 stop16h 50m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/148:16 am
ATL
- YYZ
1 stop13h 09m
Multiple Airlines
Thu 7/166:30 am
YYZ
- ATL
1 stop16h 50m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 6/10. 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
Mon 7/208:50 am
YTZ
- ATL
1 stop24h 32m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/2510:48 pm
ATL
- YYZ
1 stop16h 12m
Multiple Airlines
Mon 7/271:30 pm
YYZ
- ATL
1 stop10h 29m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$347
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 13, 2026.
Search for one-way flight options from Atlanta to Ontario. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 8/85:01 am
ATL
- YUL
1 stop13h 14m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/66:35 am
ATL
- YOW
1 stop8h 22m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 8/185:05 am
ATL
- YUL
1 stop13h 10m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 8/195:05 am
ATL
- YUL
1 stop13h 10m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 6/12. 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
- YUL
1 stop9h 59m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/410:40 pm
ATL
- YUL
2 stops13h 30m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 6/10. 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
- YUL
2 stops13h 09m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/85:05 am
ATL
- YUL
2 stops13h 05m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/295:05 am
ATL
- YUL
2 stops17h 05m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/148:16 am
ATL
- YUL
2 stops16h 21m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 6/11. 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
- YOW
1 stop11h 58m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 6/306:35 pm
ATL
- YUL
2 stops17h 35m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$172
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 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $319 (Kiwi.com) |
One-way from | $159 (Kiwi.com) |
Popular in | August |
Cheapest in | October |
Average price | $620 |
Good round-trip deal | $654 or less |
Good one-way deal | $329 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 13, 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
Wed 7/15
5:05 am-12:59 pm
1 stop7h 54m
Toronto Island
Thu 7/16
8:50 am-2:46 pm
1 stop5h 56m
$380
AtlantaToronto
ATL - YTZ
ATLYTZ
Atlanta Hartsfield-Jackson
Sun 7/5
8:59 pm-1:05 pm
1 stop16h 06m
Toronto Island
Mon 7/13
6:05 pm-2:46 pm
1 stop20h 41m
$398
AtlantaToronto
ATL - YTZ
ATLYTZ
Atlanta Hartsfield-Jackson
Sat 7/11
5:01 am-8:59 am
1 stop27h 58m
Toronto Island
Sat 7/18
1:40 pm-9:40 pm
1 stop8h 00m
$409
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Fri 7/10
10:48 pm-7:44 pm
2 stops20h 56m
Ottawa
Fri 7/17
7:00 am-5:09 pm
1 stop10h 09m
$410
AtlantaToronto
ATL - YTZ
ATLYTZ
Atlanta Hartsfield-Jackson
Mon 7/20
5:30 am-5:25 pm
1 stop11h 55m
Toronto Island
Mon 7/27
8:55 am-6:37 pm
2 stops9h 42m
$454
AtlantaToronto
ATL - YTZ
ATLYTZ
Atlanta Hartsfield-Jackson
Wed 7/1
8:23 am-5:25 pm
1 stop9h 02m
Toronto Island
Sat 7/4
8:55 am-11:05 pm
2 stops14h 10m
$461
AtlantaToronto
ATL - YTZ
ATLYTZ
Atlanta Hartsfield-Jackson
Thu 6/25
9:05 pm-6:00 pm
1 stop20h 55m
Toronto Island
Sat 6/27
8:50 am-3:11 pm
1 stop6h 21m
$536
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Sun 7/19
8:07 am-5:07 pm
1 stop9h 00m
Ottawa
Sun 7/19
7:30 pm-12:30 am
1 stop5h 00m
$561
AtlantaToronto
ATL - YYZ
ATLYYZ
Atlanta Hartsfield-Jackson
Thu 10/8
2:30 pm-11:13 pm
1 stop8h 43m
Toronto Pearson Intl
Tue 10/13
2:10 pm-11:10 pm
1 stop9h 00m
$571
AtlantaToronto
ATL - YYZ
ATLYYZ
Atlanta Hartsfield-Jackson
Wed 9/23
3:30 pm-11:39 pm
1 stop8h 09m
Toronto Pearson Intl
Sun 9/27
11:38 am-1:54 pm
Nonstop2h 16m
$571
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-YTZ
ATL-YOW
ATL-YYZ
ATL-YSB
ATL-YUL
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-YTZ
ATL-YOW
ATL-YYZ
ATL-YSB
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 13, 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 36% 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 13, 2026.
The most flights from ATL to CAON are scheduled on a Friday (24 on average). You will have fewer flight options on Monday, 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 13, 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. Monday mornings 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 13, 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.
Crew
8.5
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.9
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 13, 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 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$186 | Average$573 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$263 | Average$618 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$279 | Average$686 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$283 | Average$577 | FlexibilityNo cancel fee | On-time69% |