$381+ Cheap flights from Ontario (ONT) to Greece
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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ATH
Sep 19 — Sep 261
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Greece 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 Ontario to GreeceExplore the most affordable flight options available from Ontario to Greece. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.
Explore the most affordable flight options available from Ontario to Greece. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.
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 12/286:00 am -
2 stops33h 30m
Fri 1/81:00 pm -
2 stops39h 44m
Deal found 8/15![United Airlines logo]()
$817
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 11/186:00 am -
2 stops18h 05m
Wed 12/26:40 am -
2 stops21h 07m
Deal found 8/19![United Airlines logo]()
$829
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/226:00 am -
2 stops45h 40m
Fri 11/276:10 am -
2 stops25h 58m
Deal found 8/16![Delta logo]()
$830
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 11/186:00 am -
2 stops18h 05m
Wed 11/256:45 am -
2 stops23h 30m
Deal found 8/19![United Airlines logo]()
$833
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 12/286:00 am -
2 stops33h 30m
Thu 1/712:55 pm -
2 stops20h 11m
Deal found 8/15![United Airlines logo]()
$837
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:05 am -
1 stop16h 15m
Tue 10/209:45 am -
1 stop20h 40m
Deal found 8/20![KLM logo]()
$839
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/410:00 pm -
1 stop25h 20m
Wed 10/146:00 am -
2 stops26h 43m
Deal found 8/16![Delta logo]()
$848
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:54 am -
2 stops25h 06m
Wed 10/216:00 am -
2 stops26h 43m
Deal found 8/20![Delta logo]()
$852
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.
Wed 9/308:03 am -
2 stops29h 02m
Wed 10/76:00 am -
2 stops26h 51m
Deal found 8/16![United Airlines logo]()
$856
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:00 am -
1 stop17h 35m
Tue 11/176:45 am -
2 stops21h 16m
Deal found 8/17![United Airlines logo]()
$859
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.
Thu 12/316:00 am -
2 stops26h 25m
Fri 1/81:00 pm -
2 stops39h 44m
Deal found 8/15![United Airlines logo]()
$862
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:00 am -
2 stops25h 15m
Sun 9/137:10 pm -
2 stops36h 49m
Deal found 8/16![Lufthansa logo]()
$1,108
Best flights from Ontario to GreeceDiscover carefully curated flight deals from Ontario to Greece that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.
Discover carefully curated flight deals from Ontario to Greece that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.
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 11/186:00 am -
2 stops18h 05m
Wed 11/256:45 am -
2 stops23h 30m
Deal found 8/19![United Airlines logo]()
$833
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:05 am -
1 stop17h 55m
Mon 10/199:45 am -
1 stop18h 37m
Deal found 8/19![KLM logo]()
$904
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:00 am -
2 stops25h 15m
Sun 9/137:10 pm -
2 stops36h 49m
Deal found 8/16![Lufthansa logo]()
$1,108
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:00 am -
2 stops39h 35m
Mon 9/146:45 pm -
2 stops35h 22m
Deal found 8/17![British Airways logo]()
$1,111
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.
Fri 9/1810:00 pm -
1 stop27h 00m
Sun 10/49:45 am -
1 stop22h 39m
Deal found 8/18![Delta logo]()
$1,164
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:47 am -
2 stops27h 14m
Thu 10/18:10 am -
2 stops22h 47m
Deal found 8/18![Multiple Airlines logo]()
$1,396
This Air Serbia 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 Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2710:39 pm -
2 stops31h 06m
Mon 10/124:25 am -
2 stops27h 44m
Deal found 8/18![Air Serbia logo]()
$1,642
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:00 am -
2 stops18h 05m
Tue 12/16:45 am -
2 stops23h 35m
Deal found 8/17![United Airlines logo]()
$865
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:08 am -
2 stops43h 52m
Mon 9/147:00 pm -
2 stops37h 59m
Deal found 8/17![Lufthansa logo]()
$1,124
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/74:07 pm -
2 stops40h 03m
Mon 9/141:20 pm -
2 stops38h 57m
Deal found 8/16![British Airways logo]()
$1,138
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/812:18 pm -
2 stops18h 17m
Sun 11/225:55 am -
2 stops20h 35m
Deal found 8/17![KLM logo]()
$1,367
This Turkish 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:39 pm -
2 stops48h 06m
Thu 10/159:35 am -
2 stops24h 07m
Deal found 8/18![Multiple Airlines logo]()
$1,403
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:05 am -
1 stop17h 55m
Fri 10/169:45 am -
1 stop18h 37m
Deal found 8/18![KLM logo]()
$1,415
This Air Serbia 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 Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/711:59 pm -
2 stops41h 11m
Mon 9/144:10 pm -
2 stops38h 47m
Deal found 8/18![Air Serbia logo]()
$1,705
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:05 am -
1 stop17h 55m
Fri 10/169:45 am -
1 stop18h 37m
Deal found 8/18![KLM logo]()
$1,473
This Turkish 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/62:10 pm -
2 stops20h 15m
Mon 9/149:35 am -
2 stops23h 49m
Deal found 8/15![Multiple Airlines logo]()
$1,671
This Air Serbia 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 Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/611:59 pm -
2 stops29h 26m
Tue 9/154:10 pm -
2 stops38h 47m
Deal found 8/15![Air Serbia logo]()
$1,734
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:07 am -
1 stop17h 53m
Fri 10/169:45 am -
1 stop18h 37m
Deal found 8/19![KLM logo]()
$1,608
This Air Serbia 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 Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/711:59 pm -
2 stops29h 26m
Sun 9/134:10 pm -
2 stops38h 47m
Deal found 8/17![Air Serbia logo]()
$1,950
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:05 am -
1 stop16h 55m
Wed 9/309:45 am -
1 stop20h 39m
Deal found 8/16![KLM logo]()
$1,666
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:05 am -
1 stop17h 55m
Sun 9/209:45 am -
1 stop18h 31m
Deal found 8/19![KLM logo]()
$1,700
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:05 am -
1 stop17h 55m
Tue 10/611:30 am -
1 stop18h 55m
Deal found 8/18![KLM logo]()
$1,728
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:45 am -
3 stops26h 20m
Fri 10/912:55 pm -
3 stops20h 59m
Deal found 8/18![Multiple Airlines logo]()
$6,537
Last-minute flights from Ontario to GreeceDiscover last-minute flight deals from Ontario to Greece. Data last updated August 20, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Greece. Data last updated August 20, 2026 and is based on user searches.
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.
Sat 8/2212:00 pm -
1 stop37h 00m
Wed 9/29:45 am -
1 stop20h 08m
Deal found 8/18![Delta logo]()
$961
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.
Sun 8/237:13 pm -
3 stops31h 57m
Thu 9/312:35 pm -
2 stops34h 15m
Deal found 8/18![United Airlines logo]()
$967
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am -
1 stop17h 35m
Tue 9/112:35 pm -
1 stop20h 00m
Deal found 8/17![United Airlines logo]()
$954
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 8/267:05 am -
1 stop17h 55m
Fri 9/46:00 am -
2 stops20h 24m
Deal found 8/18![Delta logo]()
$958
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:00 am -
1 stop17h 35m
Wed 10/2112:35 pm -
1 stop20h 14m
Deal found 8/17![United Airlines logo]()
$974
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.
Sun 9/67:05 am -
1 stop16h 55m
Thu 9/246:00 am -
2 stops21h 19m
Deal found 8/18![Delta logo]()
$978
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:00 am -
2 stops39h 35m
Mon 9/146:45 pm -
2 stops35h 22m
Deal found 8/17![British Airways logo]()
$1,111
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:00 am -
2 stops25h 15m
Sun 9/137:10 pm -
2 stops36h 49m
Deal found 8/16![Lufthansa logo]()
$1,108
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 9/911:54 am -
2 stops25h 06m
Wed 9/166:00 am -
2 stops24h 24m
Deal found 8/19![Delta logo]()
$982
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:54 am -
2 stops25h 06m
Wed 10/216:00 am -
2 stops26h 43m
Deal found 8/20![Delta logo]()
$852
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:00 am -
1 stop17h 35m
Tue 11/176:45 am -
2 stops21h 16m
Deal found 8/17![United Airlines logo]()
$859
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.
Wed 9/308:03 am -
2 stops29h 02m
Wed 10/76:00 am -
2 stops26h 51m
Deal found 8/16![United Airlines logo]()
$856
One-way flights from Ontario to GreeceSearch for one-way flight options from Ontario to Greece. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.
Search for one-way flight options from Ontario to Greece. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.
This Travelocity 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/1712:43 pm -
2 stops20h 32m
Deal found 8/17![British Airways logo]()
$381
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/96:53 pm -
2 stops30h 07m
Deal found 8/17![United Airlines logo]()
$398
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/19:30 am -
2 stops26h 30m
Deal found 8/17![British Airways logo]()
$436
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.
Wed 10/72:30 pm -
3 stops50h 50m
Deal found 8/19![Multiple Airlines logo]()
$450
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:00 am -
2 stops20h 00m
Deal found 8/18![Air Canada logo]()
$455
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.
Wed 10/75:00 am -
2 stops19h 10m
Deal found 8/19![Air Canada logo]()
$456
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.
Sun 9/277:00 am -
1 stop17h 35m
Deal found 8/19![United Airlines logo]()
$459
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 10/1111:15 pm -
2 stops22h 35m
Deal found 8/17![Delta logo]()
$463
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.
Wed 11/116:00 am -
2 stops19h 00m
Deal found 8/17![Multiple Airlines logo]()
$467
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.
Tue 9/297:05 am -
2 stops20h 35m
Deal found 8/19![Delta logo]()
$468
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.
Mon 9/286:06 am -
2 stops19h 04m
Deal found 8/17![Multiple Airlines logo]()
$469
This Travelocity 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/114:29 pm -
2 stops32h 56m
Deal found 8/16![British Airways logo]()
$509
Find flight deals from Ontario to Greece
Keep the following information in mind while searching for Ontario to Greece flight deals. Data was last updated August 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $817 (United Airlines) |
One-way from | $381 (Travelocity) |
Popular in | June |
Cheapest in | February |
Average price | $862 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Greece 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 20, 2026.
Use the filters below to find and compare flights from Ontario to Greece that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioAthens
ONT Ontario - ATH Athens Eleftherios V.
ONTATH
Ontario
Wed 11/18
6:00 am-10:05 am
2 stops18h 05m
Athens Eleftherios V.
Wed 11/25
6:45 am-8:15 pm
2 stops23h 30m
$833
OntarioAthens
ONT Ontario - ATH Athens Eleftherios V.
ONTATH
Ontario
Tue 11/10
6:00 am-10:05 am
2 stops18h 05m
Athens Eleftherios V.
Tue 12/1
6:45 am-8:20 pm
2 stops23h 35m
$865
OntarioAthens
ONT Ontario - ATH Athens Eleftherios V.
ONTATH
Ontario
Mon 10/5
7:05 am-11:00 am
1 stop17h 55m
Athens Eleftherios V.
Mon 10/19
9:45 am-6:22 pm
1 stop18h 37m
$904
OntarioThessaloniki
ONT Ontario - SKG Thessaloniki Makedonia
ONTSKG
Ontario
Mon 9/7
5:00 am-4:15 pm
2 stops25h 15m
Thessaloniki Makedonia
Sun 9/13
7:10 pm-9:59 pm
2 stops36h 49m
$1,108
OntarioThessaloniki
ONT Ontario - SKG Thessaloniki Makedonia
ONTSKG
Ontario
Sun 9/6
10:00 am-11:35 am
2 stops39h 35m
Thessaloniki Makedonia
Mon 9/14
6:45 pm-8:07 pm
2 stops35h 22m
$1,111
OntarioThessaloniki
ONT Ontario - SKG Thessaloniki Makedonia
ONTSKG
Ontario
Mon 9/7
6:08 am-12:00 pm
2 stops43h 52m
Thessaloniki Makedonia
Mon 9/14
7:00 pm-10:59 pm
2 stops37h 59m
$1,124
OntarioThessaloniki
ONT Ontario - SKG Thessaloniki Makedonia
ONTSKG
Ontario
Mon 9/7
4:07 pm-6:10 pm
2 stops40h 03m
Thessaloniki Makedonia
Mon 9/14
1:20 pm-6:17 pm
2 stops38h 57m
$1,138
OntarioAthens
ONT Ontario - ATH Athens Eleftherios V.
ONTATH
Ontario
Fri 9/18
10:00 pm-11:00 am
1 stop27h 00m
Athens Eleftherios V.
Sun 10/4
9:45 am-10:24 pm
1 stop22h 39m
$1,164
OntarioAthens
ONT Ontario - ATH Athens Eleftherios V.
ONTATH
Ontario
Sun 11/8
12:18 pm-4:35 pm
2 stops18h 17m
Athens Eleftherios V.
Sun 11/22
5:55 am-4:30 pm
2 stops20h 35m
$1,367
OntarioThessaloniki
ONT Ontario - SKG Thessaloniki Makedonia
ONTSKG
Ontario
Thu 9/17
10:47 am-12:01 am
2 stops27h 14m
Thessaloniki Makedonia
Thu 10/1
8:10 am-8:57 pm
2 stops22h 47m
$1,396
Showing 1-10 of 42 resultsSorted by cheapest first
Best time to book a flight from Ontario to Greece
Have a flexible travel schedule? Discover the best time to fly to Greece from Ontario with our price prediction graph.
ONT-ATH
ONT-SKG
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 Ontario to Greece
ONT-GR0
ONT-ATH
ONT-SKG
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