$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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
Aug 3 — Aug 101
Round-trip
1 adult, Economy
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Find cheap flights from Atlanta to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 July 4, 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 July 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/316:50 am
ATL
- YOW
1 stop8h 05m
Multiple Airlines
Fri 9/47:00 am
YOW
- ATL
1 stop26h 59m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 8/3010:48 pm
ATL
- YOW
1 stop16h 07m
Multiple Airlines
Thu 9/37:00 am
YOW
- ATL
2 stops10h 12m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 9/147:30 am
ATL
- YYZ
1 stop13h 25m
Multiple Airlines
Thu 9/179:50 am
YYZ
- ATL
1 stop9h 35m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 8/16:35 am
ATL
- YYZ
1 stop7h 30m
Multiple Airlines
Tue 9/19:30 am
YYZ
- ATL
1 stop14h 29m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/316:50 am
ATL
- YOW
1 stop8h 05m
Multiple Airlines
Tue 9/17:00 am
YOW
- ATL
2 stops12h 24m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 6/29. 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
- YYZ
2 stops12h 59m
Multiple Airlines
Fri 9/111:30 pm
YYZ
- ATL
1 stop8h 02m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/156:35 am
ATL
- YYZ
1 stop7h 30m
Multiple Airlines
Tue 8/186:30 am
YYZ
- ATL
1 stop17h 29m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 9/210:48 pm
ATL
- YYZ
1 stop15h 17m
Multiple Airlines
Wed 9/99:30 am
YYZ
- ATL
1 stop14h 57m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 8/26:35 am
ATL
- YYZ
1 stop7h 30m
Multiple Airlines
Tue 8/116:30 am
YYZ
- ATL
1 stop7h 34m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 8/1710:48 pm
ATL
- YYZ
1 stop15h 17m
Multiple Airlines
Mon 8/249:30 am
YYZ
- ATL
1 stop7h 40m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/1210:48 pm
ATL
- YYZ
1 stop15h 17m
Multiple Airlines
Tue 8/186:30 am
YYZ
- ATL
1 stop17h 29m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/276:50 am
ATL
- YYZ
1 stop7h 15m
Multiple Airlines
Sun 8/306:30 am
YYZ
- ATL
1 stop10h 40m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$325
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 July 4, 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 July 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/168:30 pm
ATL
- YOW
1 stop27h 18m
Multiple Airlines
Wed 8/192:10 pm
YOW
- ATL
1 stop10h 42m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$366
This FlightHub deal was found by Cheapflights users on 6/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:05 pm
ATL
- YOW
1 stop10h 30m
WestJet
Thu 9/178:15 pm
YOW
- ATL
1 stop10h 30m
WestJet
Deal found 6/29![WestJet logo]()
$539
This Delta deal was found by Cheapflights users on 7/3. 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 11/106:30 am
ATL
- YUL
1 stop9h 35m
Delta
Thu 11/199:28 am
YUL
- ATL
1 stop13h 18m
Delta
Deal found 7/3![Delta logo]()
$558
This United Airlines deal was found by Cheapflights users on 6/30. 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 9/69:50 am
ATL
- YOW
1 stop4h 27m
United Airlines
Mon 9/76:25 am
YOW
- ATL
1 stop5h 53m
United Airlines
Deal found 6/30![United Airlines logo]()
$561
This Air Canada deal was found by Cheapflights users on 7/3. 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.
Tue 7/2812:55 pm
ATL
- YOW
1 stop4h 34m
Air Canada
Wed 7/299:05 am
YOW
- ATL
1 stop7h 14m
Air Canada
Deal found 7/3![Air Canada logo]()
$595
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 7/315:01 am
ATL
- YOW
1 stop9h 34m
Multiple Airlines
Mon 8/37:00 am
YOW
- ATL
1 stop13h 04m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 7/3010:05 am
ATL
- YTZ
1 stop7h 55m
Multiple Airlines
Mon 8/36:45 am
YTZ
- ATL
1 stop25h 59m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 9/1010:45 am
ATL
- YTZ
1 stop7h 15m
Multiple Airlines
Sun 9/131:40 pm
YTZ
- ATL
1 stop19h 23m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$415
This United Airlines deal was found by Cheapflights users on 7/3. 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 12/216:00 am
ATL
- YOW
1 stop7h 26m
United Airlines
Sun 12/277:25 pm
YOW
- ATL
1 stop4h 31m
United Airlines
Deal found 7/3![United Airlines logo]()
$577
This Delta deal was found by Cheapflights users on 6/29. 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 11/147:30 am
ATL
- YUL
1 stop8h 35m
Delta
Sat 11/2111:15 am
YUL
- ATL
1 stop9h 26m
Delta
Deal found 6/29![Delta logo]()
$584
This Mytrip deal was found by Cheapflights users on 6/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/308:15 am
ATL
- YOW
3 stops16h 05m
WestJet
Thu 9/312:25 pm
YOW
- ATL
3 stops18h 30m
WestJet
Deal found 6/29![WestJet logo]()
$600
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 7/2810:05 am
ATL
- YTZ
1 stop7h 55m
Multiple Airlines
Wed 7/298:55 am
YTZ
- ATL
2 stops9h 42m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$465
This United Airlines deal was found by Cheapflights users on 7/3. 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 9/89:50 am
ATL
- YOW
1 stop4h 27m
United Airlines
Sat 9/126:00 am
YOW
- ATL
3 stops11h 07m
United Airlines
Deal found 7/3![United Airlines logo]()
$588
This Delta deal was found by Cheapflights users on 6/30. 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 9/510:00 am
ATL
- YYZ
Nonstop2h 23m
Delta
Tue 9/156:00 am
YYZ
- ATL
1 stop9h 25m
Delta
Deal found 6/30![Delta logo]()
$592
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 7/147:04 pm
ATL
- YOW
2 stops17h 50m
Multiple Airlines
Fri 7/177:00 am
YOW
- ATL
1 stop10h 09m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$483
This Delta deal was found by Cheapflights users on 6/29. 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 9/189:00 am
ATL
- YUL
Nonstop2h 38m
Delta
Tue 9/222:25 pm
YUL
- ATL
1 stop8h 40m
Delta
Deal found 6/29![Delta logo]()
$597
This Air Canada deal was found by Cheapflights users on 6/30. 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 12/83:45 pm
YSB
- ATL
1 stop5h 36m
Air Canada
Deal found 6/30![Air Canada logo]()
$725
This United Airlines deal was found by Cheapflights users on 7/1. 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 7/315:30 am
ATL
- YOW
1 stop4h 33m
United Airlines
Mon 8/37:30 pm
YOW
- ATL
1 stop5h 00m
United Airlines
Deal found 7/1![United Airlines logo]()
$603
This Delta deal was found by Cheapflights users on 6/30. 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 10/79:23 pm
ATL
- YUL
Nonstop2h 36m
Delta
Wed 10/149:30 am
YUL
- ATL
1 stop9h 04m
Delta
Deal found 6/30![Delta logo]()
$597
This United Airlines deal was found by Cheapflights users on 7/2. 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 7/2![United Airlines logo]()
$613
This Air Canada deal was found by Cheapflights users on 6/29. 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 6/29![Air Canada logo]()
$743
This Delta deal was found by Cheapflights users on 7/2. 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 10/178:05 am
ATL
- YYZ
Nonstop2h 18m
Delta
Tue 10/206:00 am
YYZ
- ATL
1 stop8h 28m
Delta
Deal found 7/2![Delta logo]()
$612
This United Airlines deal was found by Cheapflights users on 6/29. 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 10/178:00 am
ATL
- YTZ
1 stop8h 42m
United Airlines
Tue 10/203:15 pm
YTZ
- ATL
1 stop9h 30m
United Airlines
Deal found 6/29![United Airlines logo]()
$637
This Delta deal was found by Cheapflights users on 7/3. 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 7/182:59 pm
ATL
- YYZ
Nonstop2h 20m
Delta
Tue 7/212:31 pm
YYZ
- ATL
1 stop9h 12m
Delta
Deal found 7/3![Delta logo]()
$614
This United Airlines deal was found by Cheapflights users on 6/29. 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 9/169:50 am
ATL
- YTZ
1 stop8h 56m
United Airlines
Sat 9/1912:15 pm
YTZ
- ATL
1 stop9h 01m
United Airlines
Deal found 6/29![United Airlines logo]()
$637
This Delta deal was found by Cheapflights users on 6/29. 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 9/19:15 pm
ATL
- YUL
Nonstop2h 37m
Delta
Tue 9/299:30 am
YUL
- ATL
1 stop7h 59m
Delta
Deal found 6/29![Delta logo]()
$614
This United Airlines deal was found by Cheapflights users on 6/30. 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 8/187:38 pm
ATL
- YTZ
2 stops21h 06m
United Airlines
Sat 8/297:25 am
YTZ
- ATL
2 stops16h 01m
United Airlines
Deal found 6/30![United Airlines logo]()
$653
This Delta deal was found by Cheapflights users on 7/2. 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 7/2![Delta logo]()
$617
This United Airlines deal was found by Cheapflights users on 7/3. 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 9/222:33 pm
ATL
- YYZ
1 stop20h 47m
United Airlines
Wed 9/232:00 pm
YYZ
- ATL
1 stop9h 26m
United Airlines
Deal found 7/3![United Airlines logo]()
$656
This Delta deal was found by Cheapflights users on 7/3. 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 9/276:00 am
YYZ
- ATL
1 stop4h 20m
Delta
Deal found 7/3![Delta logo]()
$622
Last-minute flights from Atlanta to OntarioDiscover last-minute flight deals from Atlanta to Ontario. Data last updated July 4, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Ontario. Data last updated July 4, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 7/229:17 pm
ATL
- YTZ
1 stop20h 08m
Multiple Airlines
Sat 7/251:40 pm
YTZ
- ATL
1 stop8h 00m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 8/16:35 am
ATL
- YYZ
1 stop7h 30m
Multiple Airlines
Tue 9/19:30 am
YYZ
- ATL
1 stop14h 29m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 8/26:35 am
ATL
- YYZ
1 stop7h 30m
Multiple Airlines
Tue 8/116:30 am
YYZ
- ATL
1 stop7h 34m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/1210:48 pm
ATL
- YYZ
1 stop15h 17m
Multiple Airlines
Tue 8/186:30 am
YYZ
- ATL
1 stop17h 29m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/156:35 am
ATL
- YYZ
1 stop7h 30m
Multiple Airlines
Tue 8/186:30 am
YYZ
- ATL
1 stop17h 29m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 8/1710:48 pm
ATL
- YYZ
1 stop15h 17m
Multiple Airlines
Mon 8/249:30 am
YYZ
- ATL
1 stop7h 40m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/187:58 pm
ATL
- YTZ
1 stop21h 22m
Multiple Airlines
Fri 9/41:40 pm
YTZ
- ATL
1 stop19h 30m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/276:50 am
ATL
- YYZ
1 stop7h 15m
Multiple Airlines
Mon 8/319:30 am
YYZ
- ATL
1 stop7h 40m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/276:50 am
ATL
- YYZ
1 stop7h 15m
Multiple Airlines
Sun 8/306:30 am
YYZ
- ATL
1 stop10h 40m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 8/3010:48 pm
ATL
- YOW
1 stop16h 07m
Multiple Airlines
Thu 9/37:00 am
YOW
- ATL
2 stops10h 12m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/316:50 am
ATL
- YOW
1 stop8h 05m
Multiple Airlines
Fri 9/47:00 am
YOW
- ATL
1 stop26h 59m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/316:50 am
ATL
- YOW
1 stop8h 05m
Multiple Airlines
Tue 9/17:00 am
YOW
- ATL
2 stops12h 24m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$318
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 July 4, 2026.
Search for one-way flight options from Atlanta to Ontario. Find affordable one-way fares based on user searches. Data last updated July 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/316:50 am
ATL
- YOW
1 stop8h 05m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/3010:48 pm
ATL
- YOW
1 stop16h 07m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 6/29. 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
- YOW
1 stop8h 22m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 9/19:05 am
ATL
- YOW
1 stop8h 18m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 9/29:05 am
ATL
- YOW
1 stop8h 18m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 9/29:05 am
ATL
- YUL
1 stop9h 10m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/155:01 am
ATL
- YOW
1 stop12h 22m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 8/55:05 am
ATL
- YUL
1 stop13h 10m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 6/30. 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
1 stop13h 10m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 6/29![Multiple Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 10/235:30 am
ATL
- YOW
1 stop9h 03m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 6/30![Multiple Airlines logo]()
$161
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 July 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $302 (Kiwi.com) |
One-way from | $124 (Kiwi.com) |
Popular in | July |
Cheapest in | October |
Average price | $706 |
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 July 4, 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
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Sun 8/16
8:30 pm-11:48 pm
1 stop27h 18m
Ottawa
Wed 8/19
2:10 pm-12:52 am
1 stop10h 42m
$366
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Fri 7/31
5:01 am-2:35 pm
1 stop9h 34m
Ottawa
Mon 8/3
7:00 am-8:04 pm
1 stop13h 04m
$384
AtlantaToronto
ATL - YTZ
ATLYTZ
Atlanta Hartsfield-Jackson
Thu 7/30
10:05 am-6:00 pm
1 stop7h 55m
Toronto Island
Mon 8/3
6:45 am-8:44 am
1 stop25h 59m
$411
AtlantaToronto
ATL - YTZ
ATLYTZ
Atlanta Hartsfield-Jackson
Thu 9/10
10:45 am-6:00 pm
1 stop7h 15m
Toronto Island
Sun 9/13
1:40 pm-9:03 am
1 stop19h 23m
$415
AtlantaToronto
ATL - YTZ
ATLYTZ
Atlanta Hartsfield-Jackson
Tue 7/28
10:05 am-6:00 pm
1 stop7h 55m
Toronto Island
Wed 7/29
8:55 am-6:37 pm
2 stops9h 42m
$465
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Tue 7/14
7:04 pm-12:54 pm
2 stops17h 50m
Ottawa
Fri 7/17
7:00 am-5:09 pm
1 stop10h 09m
$483
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Mon 9/14
7:05 pm-5:35 am
1 stop10h 30m
Ottawa
Thu 9/17
8:15 pm-6:45 am
1 stop10h 30m
$539
AtlantaMontreal
ATL - YUL
ATLYUL
Atlanta Hartsfield-Jackson
Tue 11/10
6:30 am-4:05 pm
1 stop9h 35m
Montreal Pierre Elliott Trudeau Intl
Thu 11/19
9:28 am-10:46 pm
1 stop13h 18m
$558
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Sun 9/6
9:50 am-2:17 pm
1 stop4h 27m
Ottawa
Mon 9/7
6:25 am-12:18 pm
1 stop5h 53m
$561
AtlantaOttawa
ATL - YOW
ATLYOW
Atlanta Hartsfield-Jackson
Mon 12/21
6:00 am-1:26 pm
1 stop7h 26m
Ottawa
Sun 12/27
7:25 pm-11:56 pm
1 stop4h 31m
$577
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-YUL
ATL-YYZ
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-YUL
ATL-YYZ
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 July 4, 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 July 4, 2026.
The most flights from ATL to CAON are scheduled on a Sunday (22 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (16 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 July 4, 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
Boarding
8.1
Overall
7.8
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Comfort
7.8
Food
7.2
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 July 4, 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 July 4, 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% |