$123+ Cheap flights from Atlanta (ATL) to Ontario
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
Oct 13 — Oct 201
Round-trip
1 adult, Economy
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Find cheap flights from Atlanta to Ontario with Cheapflights
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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 13, 2026.
Explore the most affordable flight options available from Atlanta to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/161:30 pm -
1 stop7h 25m
Mon 10/198:10 am -
1 stop24h 56m
Deal found 9/9![Multiple Airlines logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:11 am -
1 stop9h 09m
Fri 11/209:15 am -
1 stop28h 27m
Deal found 9/9![Multiple Airlines logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:31 am -
1 stop7h 29m
Tue 11/39:35 am -
1 stop7h 48m
Deal found 9/9![Multiple Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:31 am -
1 stop7h 49m
Sun 11/89:15 am -
1 stop23h 48m
Deal found 9/9![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:59 pm -
1 stop17h 56m
Wed 10/217:45 am -
1 stop10h 59m
Deal found 9/11![Multiple Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:00 pm -
1 stop17h 05m
Tue 10/69:30 am -
1 stop14h 29m
Deal found 9/9![Multiple Airlines logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:30 pm -
1 stop24h 35m
Tue 10/277:15 am -
1 stop11h 36m
Deal found 9/9![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:00 pm -
1 stop17h 05m
Wed 10/77:45 am -
1 stop10h 32m
Deal found 9/9![Multiple Airlines logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:20 am -
1 stop7h 05m
Tue 10/69:30 am -
1 stop14h 29m
Deal found 9/12![Multiple Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:30 pm -
1 stop14h 22m
Tue 10/279:10 am -
1 stop13h 58m
Deal found 9/11![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/59:52 pm -
1 stop22h 07m
Sun 11/84:15 pm -
1 stop6h 53m
Deal found 9/11![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:24 pm -
1 stop14h 31m
Tue 10/69:15 am -
1 stop13h 50m
Deal found 9/10![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 13, 2026.
Discover carefully curated flight deals from Atlanta to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/119:52 pm -
1 stop15h 00m
Wed 11/189:10 am -
1 stop13h 58m
Deal found 9/9![Multiple Airlines logo]()
$291
This Justfly.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com 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 stop10h 30m
Deal found 9/8![WestJet logo]()
$338
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:00 pm -
Nonstop2h 38m
Wed 10/149:30 am -
1 stop13h 37m
Deal found 9/9![Delta logo]()
$611
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2310:30 pm -
1 stop14h 25m
Sat 11/79:10 am -
1 stop13h 58m
Deal found 9/9![Multiple Airlines logo]()
$306
This Air Canada deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/1312:55 pm -
Nonstop2h 42m
Tue 1/196:10 pm -
Nonstop3h 07m
Deal found 9/12![Air Canada logo]()
$644
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:50 am -
1 stop9h 07m
Sat 10/173:15 pm -
1 stop9h 08m
Deal found 9/10![United Airlines logo]()
$649
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:20 am -
1 stop7h 55m
Sat 10/104:15 pm -
2 stops14h 40m
Deal found 9/12![Multiple Airlines logo]()
$317
This FlightHub deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:15 am -
2 stops21h 20m
Mon 10/191:20 pm -
2 stops17h 35m
Deal found 9/10![WestJet logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:31 am -
1 stop9h 49m
Thu 10/296:10 am -
1 stop24h 35m
Deal found 9/11![Multiple Airlines logo]()
$358
This Justfly.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:15 am -
2 stops27h 20m
Mon 10/54:15 pm -
2 stops14h 40m
Deal found 9/9![WestJet logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:20 pm -
1 stop18h 13m
Mon 10/54:15 pm -
1 stop18h 59m
Deal found 9/9![Multiple Airlines logo]()
$370
This oojo deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/208:15 am -
1 stop15h 46m
Wed 11/254:15 pm -
1 stop21h 50m
Deal found 9/12![WestJet logo]()
$434
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:24 pm -
1 stop14h 31m
Mon 10/51:40 pm -
1 stop9h 25m
Deal found 9/8![Multiple Airlines logo]()
$390
This Mytrip deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:15 am -
3 stops27h 20m
Tue 10/136:55 am -
3 stops24h 00m
Deal found 9/8![WestJet logo]()
$467
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/152:07 pm -
Nonstop2h 11m
Mon 1/1812:25 pm -
Nonstop2h 28m
Deal found 9/9![Delta logo]()
$626
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:20 am -
1 stop10h 00m
Sun 10/254:35 pm -
1 stop6h 32m
Deal found 9/12![Multiple Airlines logo]()
$413
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:55 am -
1 stop10h 01m
Mon 10/268:35 am -
1 stop8h 59m
Deal found 9/8![United Airlines logo]()
$673
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/109:17 pm -
Nonstop2h 37m
Tue 10/137:00 am -
Nonstop2h 51m
Deal found 9/9![Delta logo]()
$627
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:44 pm -
2 stops24h 13m
Sun 11/83:20 pm -
2 stops18h 55m
Deal found 9/8![United Airlines logo]()
$697
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:39 pm -
Nonstop2h 20m
Sat 10/177:45 am -
Nonstop2h 20m
Deal found 9/9![Delta logo]()
$648
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/229:50 am -
1 stop9h 07m
Mon 10/2612:05 pm -
1 stop21h 57m
Deal found 9/9![United Airlines logo]()
$703
This Air Canada deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 9/12![Air Canada logo]()
$854
This Mytrip deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/103:00 pm -
3 stops20h 30m
Sun 12/136:45 am -
3 stops24h 00m
Deal found 9/12![WestJet logo]()
$586
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:01 pm -
Nonstop2h 17m
Wed 10/146:15 am -
Nonstop2h 26m
Deal found 9/9![Delta logo]()
$651
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:10 am -
1 stop6h 55m
Sun 10/257:10 pm -
1 stop6h 07m
Deal found 9/12![Multiple Airlines logo]()
$496
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/232:00 pm -
1 stop9h 12m
Sun 9/276:15 am -
Nonstop2h 27m
Deal found 9/8![Delta logo]()
$653
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2510:24 pm -
1 stop14h 31m
Mon 9/285:15 pm -
1 stop7h 46m
Deal found 9/11![Multiple Airlines logo]()
$502
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:30 pm -
1 stop8h 06m
Sat 10/246:10 am -
Nonstop2h 25m
Deal found 9/10![Delta logo]()
$668
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:00 am -
2 stops12h 35m
Sat 10/313:45 pm -
2 stops18h 54m
Deal found 9/10![United Airlines logo]()
$884
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:05 am -
Nonstop2h 18m
Sun 10/1811:38 am -
Nonstop2h 25m
Deal found 9/10![Delta logo]()
$671
Last-minute flights from Atlanta to OntarioDiscover last-minute flight deals from Atlanta to Ontario. Data last updated September 13, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Ontario. Data last updated September 13, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:00 pm -
1 stop17h 05m
Tue 10/69:30 am -
1 stop14h 29m
Deal found 9/9![Multiple Airlines logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:00 pm -
1 stop17h 05m
Wed 10/77:45 am -
1 stop10h 32m
Deal found 9/9![Multiple Airlines logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:59 pm -
1 stop17h 56m
Wed 10/217:45 am -
1 stop10h 59m
Deal found 9/11![Multiple Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:24 pm -
1 stop14h 31m
Tue 10/69:15 am -
1 stop13h 50m
Deal found 9/10![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:20 am -
1 stop7h 05m
Tue 10/69:30 am -
1 stop14h 29m
Deal found 9/12![Multiple Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:24 pm -
1 stop14h 31m
Fri 10/161:40 pm -
1 stop9h 33m
Deal found 9/10![Multiple Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/161:30 pm -
1 stop7h 25m
Mon 10/198:10 am -
1 stop24h 56m
Deal found 9/9![Multiple Airlines logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:31 am -
1 stop9h 24m
Sun 10/259:35 am -
1 stop14h 31m
Deal found 9/8![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:51 am -
1 stop10h 04m
Sun 10/259:35 am -
1 stop14h 31m
Deal found 9/11![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:30 pm -
1 stop24h 35m
Tue 10/277:15 am -
1 stop11h 36m
Deal found 9/9![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:30 pm -
1 stop14h 22m
Tue 10/279:10 am -
1 stop13h 58m
Deal found 9/11![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:30 pm -
1 stop14h 22m
Sat 10/319:10 am -
1 stop13h 58m
Deal found 9/9![Multiple Airlines logo]()
$294
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 13, 2026.
Search for one-way flight options from Atlanta to Ontario. Find affordable one-way fares based on user searches. Data last updated September 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:59 pm -
2 stops21h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:57 pm -
1 stop21h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:19 pm -
2 stops36h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:00 pm -
2 stops27h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:00 pm -
2 stops27h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/289:05 pm -
2 stops20h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:00 pm -
2 stops22h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:37 pm -
2 stops11h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:11 am -
2 stops12h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/710:11 am -
2 stops38h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:00 pm -
2 stops27h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$153
This Trip.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/134:49 pm -
2 stops15h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$174
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 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $266 (Kiwi.com) |
One-way from | $123 (Kiwi.com) |
Popular in | July |
Cheapest in | August |
Average price | $621 |
Good round-trip deal | $552 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 13, 2026.
Use the filters below to find and compare flights from Atlanta to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Wed 10/28
7:31 am-5:20 pm
1 stop9h 49m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$124
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Tue 10/13
4:49 pm-8:15 am
2 stops15h 26m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$174
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Wed 10/28
9:15 am-12:44 am
3 stops39h 29m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$200
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Tue 10/27
9:32 pm-12:44 am
3 stops27h 12m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$211
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Mon 10/26
9:15 am-9:45 am
3 stops24h 30m
Toronto Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$268
AtlantaToronto
ATL Atlanta Hartsfield-Jackson - YTZ Toronto Island
ATLYTZ
Atlanta Hartsfield-Jackson
Thu 10/22
9:50 am-6:57 pm
1 stop9h 07m
Toronto Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$269
AtlantaOttawa
ATL Atlanta Hartsfield-Jackson - YOW Ottawa
ATLYOW
Atlanta Hartsfield-Jackson
Sat 12/26
6:15 am-12:07 am
1 stop17h 52m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$271
AtlantaMontreal
ATL Atlanta Hartsfield-Jackson - YUL Montreal Pierre Elliott Trudeau Intl
ATLYUL
Atlanta Hartsfield-Jackson
Sat 10/10
9:17 pm-11:54 pm
Nonstop2h 37m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$287
AtlantaMontreal
ATL Atlanta Hartsfield-Jackson - YUL Montreal Pierre Elliott Trudeau Intl
ATLYUL
Atlanta Hartsfield-Jackson
Fri 10/9
3:00 pm-5:38 pm
Nonstop2h 38m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$287
AtlantaMontreal
ATL Atlanta Hartsfield-Jackson - YUL Montreal Pierre Elliott Trudeau Intl
ATLYUL
Atlanta Hartsfield-Jackson
Thu 11/5
9:17 pm-11:54 pm
Nonstop2h 37m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$287
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-YUL
ATL-YOW
ATL-YTZ
ATL-YYZ
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-YUL
ATL-YOW
ATL-YTZ
ATL-YYZ
What is the cheapest month to book a flight from Atlanta to Region of Ontario?
Currently, October is the cheapest month in which you can book a flight from Atlanta to Region of Ontario (average of $512). 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 13, 2026.
When flying from Atlanta to Region of Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 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 13, 2026.
The most flights from ATL to CAON are scheduled on a Friday (23 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 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 $821 in October.The cheapest round-trip price found within the last 5 days was $266 on Multiple Airlines (Oct 16-Oct 19).
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 53 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 September 12, 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 13, 2026.
See what other customers who have flown with Delta,United Airlines, andWestJet from Atlanta to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
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 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Atlanta to Ontario
Discover the top 4 airlines that operate flights from Atlanta to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$186 | Average$556 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$265 | Average$611 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$318 | Average$700 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$322 | Average$582 | FlexibilityNo cancel fee | On-time69% |