$146+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
Sep 20 — Sep 271
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 August 21, 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 August 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 10/17:20 am -
1 stop7h 10m
Thu 10/87:00 am -
1 stop7h 37m
Deal found 8/19![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 10/17:20 am -
1 stop7h 10m
Sat 10/37:00 am -
1 stop11h 45m
Deal found 8/19![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 -
1 stop9h 50m
Tue 9/229:15 am -
1 stop14h 16m
Deal found 8/19![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 10/231:30 pm -
1 stop7h 25m
Sun 10/257:00 am -
1 stop17h 06m
Deal found 8/20![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/177:30 am -
1 stop9h 50m
Tue 9/229:15 am -
1 stop14h 16m
Deal found 8/19![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 10/17:20 am -
1 stop7h 10m
Tue 10/69:50 am -
1 stop9h 23m
Deal found 8/19![Multiple Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 10/17:20 am -
1 stop7h 10m
Mon 10/51:30 pm -
1 stop10h 29m
Deal found 8/19![Multiple Airlines logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/1710:24 pm -
1 stop14h 31m
Thu 9/241:40 pm -
1 stop9h 25m
Deal found 8/19![Multiple Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 10/1510:51 am -
1 stop10h 04m
Sat 10/247:00 am -
1 stop11h 33m
Deal found 8/17![Multiple Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/217:30 am -
1 stop9h 50m
Thu 9/241:40 pm -
1 stop9h 25m
Deal found 8/17![Multiple Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 10/1510:51 am -
1 stop10h 04m
Tue 10/279:35 am -
1 stop14h 52m
Deal found 8/17![Multiple Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/1210:24 pm -
1 stop14h 31m
Mon 9/141:40 pm -
1 stop9h 51m
Deal found 8/18![Multiple Airlines logo]()
$295
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 August 21, 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 August 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 10/27:20 am -
2 stops17h 00m
Tue 10/68:15 pm -
1 stop10h 30m
Deal found 8/15![Multiple Airlines logo]()
$364
This FlightHub deal was found by Cheapflights users on 8/19. 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 9/148:15 am -
2 stops21h 20m
Thu 9/174:15 pm -
2 stops14h 40m
Deal found 8/19![WestJet logo]()
$392
This United Airlines deal was found by Cheapflights users on 8/18. 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 10/202:40 pm -
2 stops20h 59m
Wed 10/213:15 pm -
1 stop9h 08m
Deal found 8/18![United Airlines logo]()
$520
This Delta deal was found by Cheapflights users on 8/15. 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.
Sun 9/69:30 am -
1 stop8h 39m
Thu 9/1012:08 pm -
2 stops10h 39m
Deal found 8/15![Delta logo]()
$612
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 10/2210:30 pm -
1 stop14h 25m
Sun 10/259:10 am -
1 stop14h 03m
Deal found 8/15![Multiple Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 10/410:25 pm -
1 stop16h 50m
Sun 10/112:00 pm -
2 stops28h 33m
Deal found 8/20![Multiple Airlines logo]()
$388
This Air Canada deal was found by Cheapflights users on 8/18. 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.
Thu 10/151:05 pm -
1 stop6h 22m
Sun 10/189:45 am -
1 stop6h 35m
Deal found 8/18![Air Canada logo]()
$877
This FlightHub deal was found by Cheapflights users on 8/15. 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.
Fri 10/27:05 pm -
2 stops17h 25m
Tue 10/64:15 pm -
2 stops14h 40m
Deal found 8/15![WestJet logo]()
$453
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 10/187:30 am -
1 stop9h 50m
Sun 10/254:35 pm -
1 stop6h 32m
Deal found 8/16![Multiple Airlines logo]()
$426
This United Airlines deal was found by Cheapflights users on 8/15. 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 10/199:50 am -
1 stop8h 56m
Sat 10/243:15 pm -
1 stop9h 08m
Deal found 8/15![United Airlines logo]()
$533
This FlightHub deal was found by Cheapflights users on 8/15. 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.
Sun 9/132:25 pm -
1 stop16h 40m
Thu 9/177:00 am -
Nonstop2h 45m
Deal found 8/15![WestJet logo]()
$524
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 10/2910:37 pm -
1 stop14h 15m
Sun 11/14:15 pm -
1 stop7h 00m
Deal found 8/15![Multiple Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/159:50 am -
1 stop9h 01m
Sat 9/193:15 pm -
1 stop9h 27m
Deal found 8/19![United Airlines logo]()
$534
This Delta deal was found by Cheapflights users on 8/17. 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.
Sun 10/113:00 pm -
Nonstop2h 38m
Thu 10/1512:44 pm -
Nonstop2h 50m
Deal found 8/17![Delta logo]()
$613
This oojo deal was found by Cheapflights users on 8/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:15 am -
1 stop11h 05m
Mon 10/266:10 am -
1 stop24h 35m
Deal found 8/19![WestJet logo]()
$525
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 10/297:45 am -
1 stop8h 59m
Sat 11/710:35 am -
1 stop13h 56m
Deal found 8/18![Multiple Airlines logo]()
$436
This United Airlines deal was found by Cheapflights users on 8/15. 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 -
1 stop9h 12m
Sat 9/191:55 pm -
1 stop10h 47m
Deal found 8/15![United Airlines logo]()
$542
This Delta deal was found by Cheapflights users on 8/15. 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 1/229:30 am -
1 stop9h 20m
Wed 1/279:28 am -
1 stop10h 15m
Deal found 8/15![Delta logo]()
$630
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 10/3010:37 pm -
1 stop14h 15m
Sun 11/110:10 am -
1 stop7h 07m
Deal found 8/15![Multiple Airlines logo]()
$443
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/129:50 am -
1 stop9h 12m
Fri 9/257:43 pm -
1 stop14h 40m
Deal found 8/19![United Airlines logo]()
$543
This Mytrip deal was found by Cheapflights users on 8/16. 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.
Tue 9/158:15 am -
3 stops16h 05m
Mon 9/218:15 pm -
2 stops34h 40m
Deal found 8/16![WestJet logo]()
$546
This Delta deal was found by Cheapflights users on 8/15. 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 9/239:30 am -
1 stop8h 39m
Sun 9/276:15 am -
Nonstop2h 27m
Deal found 8/15![Delta logo]()
$635
This Delta deal was found by Cheapflights users on 8/19. 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 10/79:17 pm -
Nonstop2h 37m
Wed 10/149:30 am -
1 stop9h 02m
Deal found 8/19![Delta logo]()
$639
This Mytrip deal was found by Cheapflights users on 8/20. 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 10/48:15 am -
2 stops21h 20m
Sun 10/116:15 pm -
2 stops19h 10m
Deal found 8/20![WestJet logo]()
$581
This Delta deal was found by Cheapflights users on 8/18. 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 9/99:15 pm -
Nonstop2h 35m
Tue 9/159:30 am -
1 stop9h 02m
Deal found 8/18![Delta logo]()
$672
This United Airlines deal was found by Cheapflights users on 8/16. 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 9/199:50 am -
1 stop9h 55m
Tue 9/291:05 pm -
1 stop11h 18m
Deal found 8/16![United Airlines logo]()
$693
This Mytrip deal was found by Cheapflights users on 8/19. 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.
Fri 10/238:15 am -
3 stops21h 20m
Mon 10/265:40 pm -
2 stops13h 05m
Deal found 8/19![Multiple Airlines logo]()
$600
This Delta deal was found by Cheapflights users on 8/19. 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 9/167:40 pm -
Nonstop2h 19m
Wed 9/237:55 am -
1 stop8h 28m
Deal found 8/19![Delta logo]()
$673
This Air Canada deal was found by Cheapflights users on 8/17. 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 -
1 stop6h 45m
Sat 9/59:45 am -
1 stop4h 35m
Deal found 8/17![Air Canada logo]()
$1,113
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/232:33 pm -
1 stop9h 21m
Sun 9/278:50 am -
1 stop4h 48m
Deal found 8/19![United Airlines logo]()
$702
Last-minute flights from Atlanta to OntarioDiscover last-minute flight deals from Atlanta to Ontario. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Ontario. Data last updated August 21, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/109:49 am -
2 stops12h 06m
Fri 9/118:10 am -
1 stop6h 36m
Deal found 8/18![Multiple Airlines logo]()
$301
This FlightHub deal was found by Cheapflights users on 8/19. 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.
Fri 9/117:05 pm -
1 stop10h 30m
Wed 9/301:20 pm -
2 stops17h 35m
Deal found 8/19![WestJet logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/1210:24 pm -
1 stop14h 31m
Mon 9/141:40 pm -
1 stop9h 51m
Deal found 8/18![Multiple Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 -
1 stop9h 50m
Tue 9/229:15 am -
1 stop14h 16m
Deal found 8/19![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 9/169:00 pm -
1 stop17h 05m
Mon 9/288:10 am -
1 stop6h 36m
Deal found 8/16![Multiple Airlines logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/177:30 am -
1 stop9h 50m
Tue 9/229:15 am -
1 stop14h 16m
Deal found 8/19![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/1710:24 pm -
1 stop14h 31m
Thu 9/241:40 pm -
1 stop9h 25m
Deal found 8/19![Multiple Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/177:30 am -
1 stop9h 50m
Sat 9/199:15 am -
1 stop13h 50m
Deal found 8/19![Multiple Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/187:30 am -
1 stop9h 50m
Tue 9/299:15 am -
1 stop14h 16m
Deal found 8/18![Multiple Airlines logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 9/1910:24 pm -
1 stop14h 31m
Thu 9/241:40 pm -
1 stop9h 25m
Deal found 8/16![Multiple Airlines logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/217:20 am -
1 stop13h 35m
Thu 10/17:00 am -
1 stop10h 35m
Deal found 8/19![Multiple Airlines logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/217:30 am -
1 stop9h 50m
Thu 9/241:40 pm -
1 stop9h 25m
Deal found 8/17![Multiple Airlines logo]()
$293
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 August 21, 2026.
Search for one-way flight options from Atlanta to Ontario. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/1712:37 pm -
2 stops11h 48m
Deal found 8/19![Multiple Airlines logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 10/231:30 pm -
2 stops10h 55m
Deal found 8/19![Multiple Airlines logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 10/191:30 pm -
2 stops10h 55m
Deal found 8/20![Multiple Airlines logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 10/167:31 am -
2 stops16h 54m
Deal found 8/19![Multiple Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 9/229:00 pm -
2 stops22h 32m
Deal found 8/20![Multiple Airlines logo]()
$151
This Trip.com deal was found by Cheapflights users on 8/17. 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 10/17:20 am -
2 stops17h 05m
Deal found 8/17![Multiple Airlines logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/148:20 pm -
3 stops45h 52m
Deal found 8/17![Multiple Airlines logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 9/169:00 pm -
2 stops27h 25m
Deal found 8/20![Multiple Airlines logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/156:30 am -
3 stops35h 42m
Deal found 8/17![Multiple Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/211:00 pm -
2 stops11h 25m
Deal found 8/17![Multiple Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 10/158:59 pm -
2 stops21h 21m
Deal found 8/16![Multiple Airlines logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 10/110:25 pm -
2 stops16h 30m
Deal found 8/19![Multiple Airlines logo]()
$195
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 August 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $286 (Kiwi.com) |
One-way from | $146 (Kiwi.com) |
Popular in | July |
Cheapest in | October |
Average price | $674 |
Good round-trip deal | $515 or less |
Good one-way deal | $344 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 7,457,451 searches. Data last updated August 21, 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 Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Fri 10/2
7:20 am-12:20 am
2 stops17h 00m
Ottawa
Tue 10/6
8:15 pm-6:45 am
1 stop10h 30m
$364
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Thu 10/22
10:30 pm-12:55 pm
1 stop14h 25m
Toronto Island
Sun 10/25
9:10 am-11:13 pm
1 stop14h 03m
$376
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Sun 10/4
10:25 pm-3:15 pm
1 stop16h 50m
Ottawa
Sun 10/11
2:00 pm-6:33 pm
2 stops28h 33m
$388
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Mon 9/14
8:15 am-5:35 am
2 stops21h 20m
Ottawa
Thu 9/17
4:15 pm-6:55 am
2 stops14h 40m
$392
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Sun 10/18
7:30 am-5:20 pm
1 stop9h 50m
Toronto Island
Sun 10/25
4:35 pm-11:07 pm
1 stop6h 32m
$426
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Thu 10/29
10:37 pm-12:52 pm
1 stop14h 15m
Toronto Island
Sun 11/1
4:15 pm-11:15 pm
1 stop7h 00m
$434
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Thu 10/29
7:45 am-4:44 pm
1 stop8h 59m
Ottawa
Sat 11/7
10:35 am-12:31 am
1 stop13h 56m
$436
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Fri 10/30
10:37 pm-12:52 pm
1 stop14h 15m
Toronto Island
Sun 11/1
10:10 am-5:17 pm
1 stop7h 07m
$443
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Fri 10/2
7:05 pm-12:30 pm
2 stops17h 25m
Ottawa
Tue 10/6
4:15 pm-6:55 am
2 stops14h 40m
$453
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Tue 10/20
2:40 pm-11:39 am
2 stops20h 59m
Toronto Island
Wed 10/21
3:15 pm-12:23 am
1 stop9h 08m
$520
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-YTZ
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-YOW
ATL-YTZ
ATL-YYZ
ATL-YSB
What is the cheapest month to book a flight from Atlanta to Region of Ontario?
Currently, November is the cheapest month in which you can book a flight from Atlanta to Region of Ontario (average of $526). Flying from Atlanta to Region of Ontario in July is currently the most expensive (average of $669). 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 August 21, 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 39% 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 August 21, 2026.
The most flights from ATL to CAON are scheduled on a Wednesday (24 on average). You will have fewer flight options on Saturday, 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?
Airfare is below average for this route at the moment.
Atlanta to Region of Ontario flights typically cost between $316 and $762 in October.The cheapest round-trip price found within the last 5 days was $286 on Multiple Airlines (Oct 1-Oct 8).
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 43 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 August 15, 2026.
Travelers seeking maximum savings on their Atlanta to Region of Ontario flight should consider departing on Thursday 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 August 21, 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.
Boarding
8.1
Overall
7.8
Entertainment
7.8
Crew
8.5
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Boarding
8.1
Overall
7.8
Entertainment
7.8
Crew
8.5
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Boarding
8.1
Overall
7.8
Entertainment
7.8
Crew
8.5
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Boarding
8.1
Overall
7.8
Entertainment
7.8
Crew
8.5
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Boarding
8.1
Overall
7.8
Entertainment
7.8
Crew
8.5
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 August 21, 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 7,457,451 searches. Data last updated August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$186 | Average$554 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$261 | Average$610 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$286 | Average$583 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$300 | Average$691 | FlexibilityNo cancel fee | On-time60% |