$135+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
Oct 2 — Oct 91
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 September 2, 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 September 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Mon 9/217:20 am -
1 stop13h 35m
Mon 9/288:10 am -
1 stop24h 51m
Deal found 9/2![Multiple Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/239:00 pm -
1 stop23h 55m
Wed 9/307:45 am -
1 stop6h 50m
Deal found 9/1![Multiple Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Fri 10/239:00 pm -
1 stop17h 05m
Sun 10/259:20 am -
1 stop14h 46m
Deal found 9/2![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Fri 10/239:00 pm -
1 stop17h 25m
Tue 10/279:20 am -
1 stop8h 03m
Deal found 9/1![Multiple Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 10/158:59 pm -
1 stop17h 56m
Sun 10/188:10 am -
1 stop11h 44m
Deal found 9/2![Multiple Airlines logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/309:00 pm -
1 stop23h 55m
Sat 10/37:00 am -
1 stop11h 45m
Deal found 9/1![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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
Mon 9/211:40 pm -
1 stop9h 25m
Deal found 8/28![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 11/58:59 pm -
1 stop19h 16m
Sun 11/87:00 am -
1 stop9h 28m
Deal found 8/31![Multiple Airlines logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Fri 10/27:20 am -
1 stop13h 35m
Sun 10/47:30 am -
1 stop16h 29m
Deal found 9/1![Multiple Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 8/29. 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 9/247:30 am -
1 stop9h 50m
Mon 9/281:40 pm -
1 stop19h 13m
Deal found 8/29![Multiple Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 9/309:00 pm -
1 stop23h 55m
Mon 10/51:50 pm -
2 stops21h 24m
Deal found 8/31![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 11/125:25 am -
1 stop8h 15m
Sun 11/224:20 pm -
1 stop30h 30m
Deal found 8/31![Multiple Airlines logo]()
$287
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 September 2, 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 September 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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
Mon 9/211:40 pm -
1 stop9h 25m
Deal found 8/28![Multiple Airlines logo]()
$282
This oojo deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 9/257:05 pm -
1 stop10h 30m
Tue 10/68:15 pm -
1 stop10h 30m
Deal found 8/31![WestJet logo]()
$374
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Thu 10/225:40 am -
1 stop8h 39m
Mon 10/266:40 pm -
1 stop19h 56m
Deal found 9/1![United Airlines logo]()
$542
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 9/217:05 pm -
1 stop10h 30m
Mon 9/287:00 am -
1 stop16h 59m
Deal found 8/28![Multiple Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 9/2. 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.
Tue 10/279:39 pm -
Nonstop2h 20m
Fri 10/301:34 pm -
Nonstop2h 11m
Deal found 9/2![Delta logo]()
$632
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Mon 9/2110:24 pm -
1 stop14h 31m
Sun 9/279:15 am -
1 stop24h 38m
Deal found 9/2![Multiple Airlines logo]()
$306
This Air Canada deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/308:25 am -
1 stop11h 10m
Sat 10/313:45 pm -
1 stop5h 33m
Deal found 8/31![Air Canada logo]()
$805
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Thu 10/110:24 pm -
1 stop14h 31m
Tue 10/69:15 am -
1 stop13h 50m
Deal found 9/1![Multiple Airlines logo]()
$352
This FlightHub deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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.
Wed 10/78:15 am -
1 stop11h 05m
Tue 10/138:15 pm -
1 stop17h 10m
Deal found 8/28![WestJet logo]()
$447
This Kiwi.com deal was found by Cheapflights users on 8/29. 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 10/87:30 am -
1 stop9h 50m
Mon 10/129:15 am -
1 stop27h 09m
Deal found 8/29![Multiple Airlines logo]()
$385
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Thu 10/225:40 am -
1 stop13h 17m
Mon 10/267:20 pm -
2 stops24h 18m
Deal found 9/1![United Airlines logo]()
$562
This FlightHub deal was found by Cheapflights users on 9/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:15 am -
2 stops28h 15m
Thu 9/176:15 pm -
2 stops19h 10m
Deal found 9/1![WestJet logo]()
$519
This Mytrip deal was found by Cheapflights users on 9/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:15 am -
1 stop11h 05m
Wed 9/307:00 am -
3 stops23h 55m
Deal found 9/2![Multiple Airlines logo]()
$400
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Thu 10/19:50 am -
2 stops24h 17m
Tue 10/612:15 pm -
2 stops22h 08m
Deal found 9/1![United Airlines logo]()
$567
This Delta deal was found by Cheapflights users on 9/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:59 pm -
Nonstop2h 19m
Thu 10/86:15 am -
Nonstop2h 26m
Deal found 9/1![Delta logo]()
$632
This Mytrip deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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.
Mon 9/217:05 pm -
1 stop10h 30m
Mon 9/2812:25 pm -
3 stops18h 20m
Deal found 8/28![WestJet logo]()
$525
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 10/83:40 pm -
1 stop23h 15m
Mon 10/127:20 am -
1 stop17h 57m
Deal found 8/28![Multiple Airlines logo]()
$404
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Sat 9/262:40 pm -
2 stops19h 27m
Mon 9/286:05 pm -
2 stops20h 38m
Deal found 9/1![United Airlines logo]()
$567
This Delta deal was found by Cheapflights users on 9/2. 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 11/147:40 pm -
Nonstop2h 17m
Sat 11/215:25 pm -
Nonstop2h 34m
Deal found 9/2![Delta logo]()
$632
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/110:24 pm -
1 stop14h 31m
Sat 10/314:30 pm -
1 stop8h 17m
Deal found 8/31![Multiple Airlines logo]()
$414
This Delta deal was found by Cheapflights users on 9/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:15 pm -
Nonstop2h 35m
Thu 10/87:00 am -
Nonstop2h 51m
Deal found 9/1![Delta logo]()
$633
This United Airlines deal was found by Cheapflights users on 8/30. 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.
Fri 10/29:50 am -
1 stop9h 01m
Mon 10/53:15 pm -
1 stop19h 08m
Deal found 8/30![United Airlines logo]()
$607
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:05 pm -
3 stops23h 15m
Mon 10/126:45 am -
2 stops24h 00m
Deal found 9/1![WestJet logo]()
$613
This Delta deal was found by Cheapflights users on 9/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/119:00 am -
Nonstop2h 38m
Thu 10/156:50 pm -
Nonstop3h 02m
Deal found 9/1![Delta logo]()
$633
This United Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 9/279:50 am -
1 stop9h 01m
Sat 10/33:15 pm -
1 stop9h 08m
Deal found 8/28![United Airlines logo]()
$607
This Air Canada deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 12/258:25 am -
1 stop6h 45m
Fri 1/13:45 pm -
1 stop5h 36m
Deal found 8/31![Air Canada logo]()
$898
This Delta deal was found by Cheapflights users on 9/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:00 pm -
Nonstop2h 38m
Mon 10/267:00 am -
Nonstop2h 51m
Deal found 9/1![Delta logo]()
$633
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 9/117:05 pm -
1 stop12h 00m
Mon 9/146:47 pm -
Nonstop3h 01m
Deal found 8/28![WestJet logo]()
$643
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 12/610:59 pm -
1 stop15h 31m
Sat 12/128:00 am -
1 stop11h 25m
Deal found 8/28![Multiple Airlines logo]()
$511
This Delta deal was found by Cheapflights users on 9/2. 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.
Fri 9/189:00 am -
Nonstop2h 36m
Tue 9/226:47 pm -
Nonstop3h 01m
Deal found 9/2![Delta logo]()
$633
Last-minute flights from Atlanta to OntarioDiscover last-minute flight deals from Atlanta to Ontario. Data last updated September 2, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Ontario. Data last updated September 2, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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
Mon 9/211:40 pm -
1 stop9h 25m
Deal found 8/28![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Mon 9/217:20 am -
1 stop13h 35m
Mon 9/288:10 am -
1 stop24h 51m
Deal found 9/2![Multiple Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/239:00 pm -
1 stop23h 55m
Wed 9/307:45 am -
1 stop6h 50m
Deal found 9/1![Multiple Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 8/29. 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 9/247:30 am -
1 stop9h 50m
Mon 9/281:40 pm -
1 stop19h 13m
Deal found 8/29![Multiple Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/309:00 pm -
1 stop23h 55m
Sat 10/37:00 am -
1 stop11h 45m
Deal found 9/1![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 9/309:00 pm -
1 stop23h 55m
Mon 10/51:50 pm -
2 stops21h 24m
Deal found 8/31![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/112:37 pm -
1 stop8h 18m
Sun 10/47:30 am -
1 stop16h 29m
Deal found 8/31![Multiple Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Fri 10/27:20 am -
1 stop13h 35m
Sun 10/47:30 am -
1 stop16h 29m
Deal found 9/1![Multiple Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 8/30. 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 10/107:31 am -
1 stop6h 54m
Tue 10/136:30 am -
1 stop17h 36m
Deal found 8/30![Multiple Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 10/158:59 pm -
1 stop17h 56m
Sun 10/188:10 am -
1 stop11h 44m
Deal found 9/2![Multiple Airlines logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Fri 10/239:00 pm -
1 stop17h 05m
Sun 10/259:20 am -
1 stop14h 46m
Deal found 9/2![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Fri 10/239:00 pm -
1 stop17h 25m
Tue 10/279:20 am -
1 stop8h 03m
Deal found 9/1![Multiple Airlines logo]()
$277
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 September 2, 2026.
Search for one-way flight options from Atlanta to Ontario. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/309:00 pm -
2 stops27h 25m
Deal found 9/1![Multiple Airlines logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 10/112:37 pm -
2 stops11h 48m
Deal found 9/2![Multiple Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 10/157:31 am -
2 stops9h 36m
Deal found 8/28![Multiple Airlines logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Sat 10/319:22 pm -
2 stops28h 08m
Deal found 9/1![Multiple Airlines logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Sat 10/37:20 am -
2 stops9h 47m
Deal found 9/2![Multiple Airlines logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 11/17:31 am -
1 stop8h 54m
Deal found 9/2![Multiple Airlines logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Mon 9/147:20 am -
1 stop7h 47m
Deal found 9/1![Multiple Airlines logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/227:31 am -
2 stops9h 36m
Deal found 8/31![Multiple Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 8/30. 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 10/198:30 am -
1 stop15h 15m
Deal found 8/30![Multiple Airlines logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 8/30. 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 10/206:30 am -
2 stops13h 30m
Deal found 8/30![Multiple Airlines logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 8/30. 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 9/1312:37 pm -
1 stop26h 30m
Deal found 8/30![Multiple Airlines logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 8/29. 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 10/89:18 pm -
2 stops40h 47m
Deal found 8/29![Multiple Airlines logo]()
$197
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 September 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $269 (Kiwi.com) |
One-way from | $135 (Kiwi.com) |
Popular in | July |
Cheapest in | October |
Average price | $616 |
Good round-trip deal | $546 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 7,457,451 searches. Data last updated September 2, 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 Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Thu 9/17
7:30 am-5:20 pm
1 stop9h 50m
Toronto Island
Mon 9/21
1:40 pm-11:05 pm
1 stop9h 25m
$282
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Mon 9/21
7:05 pm-5:35 am
1 stop10h 30m
Ottawa
Mon 9/28
7:00 am-11:59 pm
1 stop16h 59m
$303
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Mon 9/21
10:24 pm-12:55 pm
1 stop14h 31m
Toronto Island
Sun 9/27
9:15 am-9:53 am
1 stop24h 38m
$306
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Thu 10/1
10:24 pm-12:55 pm
1 stop14h 31m
Toronto Island
Tue 10/6
9:15 am-11:05 pm
1 stop13h 50m
$352
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Fri 9/25
7:05 pm-5:35 am
1 stop10h 30m
Ottawa
Tue 10/6
8:15 pm-6:45 am
1 stop10h 30m
$374
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Thu 10/8
7:30 am-5:20 pm
1 stop9h 50m
Toronto Island
Mon 10/12
9:15 am-12:24 pm
1 stop27h 09m
$385
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Thu 9/24
8:15 am-7:20 pm
1 stop11h 05m
Ottawa
Wed 9/30
7:00 am-6:55 am
3 stops23h 55m
$400
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YYZ Toronto Pearson Intl
ATLYYZ
Atlanta Hartsfield-Jackson
Thu 10/8
3:40 pm-2:55 pm
1 stop23h 15m
Toronto Pearson Intl
Mon 10/12
7:20 am-1:17 am
1 stop17h 57m
$404
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Thu 10/1
10:24 pm-12:55 pm
1 stop14h 31m
Toronto Island
Sat 10/31
4:30 pm-12:47 am
1 stop8h 17m
$414
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Wed 10/7
8:15 am-7:20 pm
1 stop11h 05m
Ottawa
Tue 10/13
8:15 pm-1:25 pm
1 stop17h 10m
$447
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-YYZ
ATL-YTZ
ATL-YOW
ATL-YUL
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-YYZ
ATL-YTZ
ATL-YOW
ATL-YUL
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 $557). 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 September 2, 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 September 2, 2026.
The most flights from ATL to CAON are scheduled on a Monday (26 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (19 on average).
How much does it cost to fly round-trip from Atlanta to Region of Ontario?
Airfare is below average for this route at the moment.
Atlanta to Region of Ontario flights typically cost between $304 and $753 in September.The cheapest round-trip price found within the last 5 days was $269 on Multiple Airlines (Sep 21-Sep 28).
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 29, 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 September 2, 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.
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.8
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 September 2, 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 September 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$186 | Average$554 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$261 | Average$607 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$286 | Average$582 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$317 | Average$698 | FlexibilityNo cancel fee | On-time60% |