$365+ 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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ATH
Jun 6 — Jun 131
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Greece with Cheapflights
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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 May 7, 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 May 7, 2026.
This British Airways deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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.
Wed 8/197:06 am
ONT
- ATH
1 stop18h 39m
British Airways
Wed 9/22:00 pm
ATH
- ONT
1 stop18h 58m
British Airways
Deal found 5/4![British Airways logo]()
$835
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/167:00 am
ONT
- ATH
1 stop17h 35m
United Airlines
Thu 9/101:10 pm
ATH
- ONT
2 stops39h 09m
United Airlines
Deal found 5/5![United Airlines logo]()
$842
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:00 am
ONT
- ATH
1 stop17h 35m
United Airlines
Tue 10/2012:35 pm
ATH
- ONT
1 stop19h 51m
United Airlines
Deal found 5/4![United Airlines logo]()
$844
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/196:00 am
ONT
- ATH
2 stops22h 55m
United Airlines
Thu 9/101:10 pm
ATH
- ONT
2 stops39h 09m
United Airlines
Deal found 5/5![United Airlines logo]()
$850
This United Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:00 am
ONT
- ATH
1 stop17h 35m
United Airlines
Tue 10/2012:35 pm
ATH
- ONT
1 stop19h 51m
United Airlines
Deal found 5/3![United Airlines logo]()
$857
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/167:00 am
ONT
- ATH
1 stop17h 35m
United Airlines
Tue 9/86:45 am
ATH
- ONT
2 stops21h 26m
United Airlines
Deal found 5/5![United Airlines logo]()
$862
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/171:44 pm
ONT
- ATH
2 stops34h 51m
United Airlines
Wed 9/96:45 am
ATH
- ONT
2 stops21h 26m
United Airlines
Deal found 5/5![United Airlines logo]()
$866
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/165:00 am
ONT
- ATH
2 stops19h 35m
United Airlines
Wed 9/912:45 pm
ATH
- ONT
2 stops20h 13m
United Airlines
Deal found 5/5![United Airlines logo]()
$867
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/191:44 pm
ONT
- ATH
2 stops23h 21m
United Airlines
Wed 9/96:45 am
ATH
- ONT
2 stops21h 26m
United Airlines
Deal found 5/5![United Airlines logo]()
$869
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/167:00 am
ONT
- ATH
1 stop17h 35m
United Airlines
Fri 9/111:10 pm
ATH
- ONT
2 stops39h 09m
United Airlines
Deal found 5/5![United Airlines logo]()
$872
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/199:01 am
ONT
- ATH
2 stops28h 04m
United Airlines
Fri 9/116:45 am
ATH
- ONT
2 stops45h 34m
United Airlines
Deal found 5/5![United Airlines logo]()
$875
This oojo deal was found by Cheapflights users on 5/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/104:59 pm
ONT
- SKG
2 stops32h 26m
British Airways
Sun 9/205:55 pm
SKG
- ONT
2 stops37h 13m
British Airways
Deal found 5/2![British Airways logo]()
$1,063
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 May 7, 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 May 7, 2026.
This United Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/151:18 pm
ONT
- ATH
2 stops23h 47m
United Airlines
Sat 7/2512:10 pm
ATH
- ONT
2 stops58h 02m
United Airlines
Deal found 5/3![United Airlines logo]()
$1,002
This KLM deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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.
Fri 10/97:00 am
ONT
- ATH
1 stop18h 00m
KLM
Sun 10/1811:30 am
ATH
- ONT
1 stop20h 44m
KLM
Deal found 5/4![KLM logo]()
$1,129
This FlightHub deal was found by Cheapflights users on 5/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/811:50 pm
ONT
- SKG
2 stops22h 55m
Turkish Airlines
Mon 9/79:15 pm
SKG
- ONT
2 stops56h 58m
Turkish Airlines
Deal found 5/2![Turkish Airlines logo]()
$1,296
This Air Serbia deal was found by Cheapflights users on 5/2. 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 Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3011:50 pm
ONT
- ATH
2 stops41h 30m
Air Serbia
Sun 9/273:35 pm
ATH
- ONT
2 stops38h 38m
Air Serbia
Deal found 5/2![Air Serbia logo]()
$1,470
This Turkish Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:50 pm
ONT
- SKG
2 stops34h 35m
Multiple Airlines
Wed 9/29:35 am
SKG
- ONT
2 stops23h 49m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$1,490
This Delta deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:00 pm
ONT
- ATH
2 stops23h 50m
Delta
Thu 6/1812:10 pm
ATH
- ONT
1 stop19h 38m
Delta
Deal found 5/3![Delta logo]()
$1,511
This KLM deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:00 am
ONT
- ATH
1 stop17h 00m
KLM
Thu 10/19:45 am
ATH
- ONT
1 stop18h 16m
KLM
Deal found 5/3![KLM logo]()
$1,244
This United Airlines deal was found by Cheapflights users on 5/1. 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 7/25:00 am
ONT
- ATH
2 stops32h 05m
United Airlines
Wed 7/1512:35 pm
ATH
- ONT
1 stop20h 16m
United Airlines
Deal found 5/1![United Airlines logo]()
$1,261
This United Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:00 am
ONT
- ATH
1 stop17h 35m
United Airlines
Sat 8/226:00 am
ATH
- ONT
2 stops26h 58m
United Airlines
Deal found 5/2![United Airlines logo]()
$1,263
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/2711:50 am
ONT
- ATH
1 stop37h 10m
Delta
Thu 7/233:30 pm
ATH
- ONT
2 stops36h 53m
Delta
Deal found 5/5![Delta logo]()
$1,522
This KLM deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 7/257:05 am
ONT
- ATH
1 stop16h 15m
KLM
Sun 8/29:45 am
ATH
- ONT
1 stop18h 38m
KLM
Deal found 5/5![KLM logo]()
$1,416
This Air Serbia deal was found by Cheapflights users on 5/1. 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 Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2510:41 pm
ONT
- ATH
2 stops33h 34m
Air Serbia
Sun 6/73:35 pm
ATH
- ONT
2 stops39h 12m
Air Serbia
Deal found 5/1![Air Serbia logo]()
$1,589
This Turkish Airlines deal was found by Cheapflights users on 5/2. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/910:41 pm
ONT
- SKG
2 stops35h 44m
Multiple Airlines
Wed 7/19:35 am
SKG
- ONT
2 stops23h 36m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$1,639
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/236:00 am
ONT
- ATH
2 stops22h 55m
United Airlines
Fri 7/241:10 pm
ATH
- ONT
2 stops43h 41m
United Airlines
Deal found 5/5![United Airlines logo]()
$1,373
This Air Serbia deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:50 pm
ONT
- SKG
2 stops29h 35m
Air Serbia
Sat 9/54:10 pm
SKG
- ONT
2 stops40h 25m
Air Serbia
Deal found 5/3![Air Serbia logo]()
$1,620
This KLM deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 6/87:05 am
ONT
- ATH
1 stop17h 55m
KLM
Mon 6/299:45 am
ATH
- ONT
1 stop18h 45m
KLM
Deal found 5/6![KLM logo]()
$1,576
This Air Serbia deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:50 pm
ONT
- SKG
2 stops41h 20m
Air Serbia
Sun 8/304:10 pm
SKG
- ONT
2 stops40h 25m
Air Serbia
Deal found 5/3![Air Serbia logo]()
$1,620
This Air Serbia deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:50 pm
ONT
- SKG
2 stops41h 20m
Air Serbia
Mon 8/314:25 am
SKG
- ONT
2 stops28h 10m
Air Serbia
Deal found 5/3![Air Serbia logo]()
$1,620
This Air Serbia deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:50 pm
ONT
- SKG
2 stops29h 35m
Air Serbia
Sun 8/304:10 pm
SKG
- ONT
2 stops40h 25m
Air Serbia
Deal found 5/3![Air Serbia logo]()
$1,620
This Air Serbia deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/2111:56 pm
ONT
- SKG
2 stops29h 29m
Air Serbia
Tue 6/304:10 pm
SKG
- ONT
2 stops40h 29m
Air Serbia
Deal found 5/5![Air Serbia logo]()
$1,788
This Air Serbia deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/2111:56 pm
ONT
- SKG
2 stops29h 29m
Air Serbia
Mon 7/64:10 pm
SKG
- ONT
2 stops40h 25m
Air Serbia
Deal found 5/5![Air Serbia logo]()
$1,788
This Air Serbia deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/2111:56 pm
ONT
- SKG
2 stops29h 29m
Air Serbia
Sun 7/54:10 pm
SKG
- ONT
2 stops40h 25m
Air Serbia
Deal found 5/5![Air Serbia logo]()
$1,915
This Air Serbia deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/2211:58 pm
ONT
- SKG
2 stops29h 27m
Air Serbia
Sun 7/54:10 pm
SKG
- ONT
2 stops40h 25m
Air Serbia
Deal found 5/5![Air Serbia logo]()
$1,915
This Air Serbia deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/2111:56 pm
ONT
- SKG
2 stops29h 29m
Air Serbia
Sat 7/44:10 pm
SKG
- ONT
2 stops40h 29m
Air Serbia
Deal found 5/5![Air Serbia logo]()
$2,002
Last-minute flights from Ontario to GreeceDiscover last-minute flight deals from Ontario to Greece. Data last updated May 7, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Greece. Data last updated May 7, 2026 and is based on user searches.
This Orbitz deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/81:40 pm
ONT
- ATH
2 stops35h 30m
Air Canada
Fri 5/1512:10 pm
ATH
- ONT
2 stops39h 42m
Air Canada
Deal found 5/6![Air Canada logo]()
$1,013
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 5/87:00 am
ONT
- ATH
1 stop17h 35m
United Airlines
Fri 5/1512:10 pm
ATH
- ONT
2 stops44h 49m
United Airlines
Deal found 5/4![United Airlines logo]()
$1,014
This United Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 5/86:00 am
ONT
- ATH
2 stops18h 00m
United Airlines
Fri 5/226:45 am
ATH
- ONT
2 stops21h 11m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,043
This United Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:00 am
ONT
- ATH
1 stop17h 35m
United Airlines
Mon 5/1112:35 pm
ATH
- ONT
1 stop20h 00m
United Airlines
Deal found 5/2![United Airlines logo]()
$1,094
This United Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 5/107:00 am
ONT
- ATH
1 stop17h 35m
United Airlines
Tue 5/1912:35 pm
ATH
- ONT
1 stop20h 00m
United Airlines
Deal found 5/6![United Airlines logo]()
$965
This KLM deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 5/107:05 am
ONT
- ATH
1 stop17h 55m
KLM
Tue 5/269:45 am
ATH
- ONT
1 stop18h 51m
KLM
Deal found 5/6![KLM logo]()
$1,051
This KLM deal was found by Cheapflights users on 5/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:05 am
ONT
- ATH
1 stop17h 55m
KLM
Tue 5/199:45 am
ATH
- ONT
1 stop18h 51m
KLM
Deal found 5/2![KLM logo]()
$1,060
This United Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:00 am
ONT
- ATH
1 stop17h 35m
United Airlines
Thu 5/2112:35 pm
ATH
- ONT
1 stop20h 16m
United Airlines
Deal found 5/2![United Airlines logo]()
$1,034
This Air Canada deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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.
Sun 6/75:00 am
ONT
- ATH
2 stops19h 10m
Air Canada
Fri 9/43:25 pm
ATH
- ONT
2 stops31h 13m
Air Canada
Deal found 5/5![Air Canada logo]()
$1,096
This Cheapflightsfares deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/97:00 am
ONT
- ATH
1 stop18h 45m
British Airways
Wed 9/22:00 pm
ATH
- ONT
1 stop18h 58m
British Airways
Deal found 5/4![British Airways logo]()
$1,090
This FlightHub deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/2211:58 pm
ONT
- SKG
2 stops22h 47m
Turkish Airlines
Fri 7/39:15 pm
SKG
- ONT
2 stops34h 46m
Turkish Airlines
Deal found 5/5![Turkish Airlines logo]()
$1,214
This FlightHub deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/2311:58 pm
ONT
- SKG
2 stops58h 27m
Turkish Airlines
Fri 7/39:35 am
SKG
- ONT
2 stops46h 26m
Turkish Airlines
Deal found 5/4![Turkish Airlines logo]()
$1,228
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 May 7, 2026.
Search for one-way flight options from Ontario to Greece. Find affordable one-way fares based on user searches. Data last updated May 7, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:00 am
ONT
- ATH
1 stop18h 45m
British Airways
Deal found 5/4![British Airways logo]()
$365
This Cheapflightsfares deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:06 am
ONT
- ATH
1 stop18h 39m
British Airways
Deal found 5/5![British Airways logo]()
$370
This Cheapflightsfares deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:06 am
ONT
- ATH
1 stop18h 39m
British Airways
Deal found 5/3![British Airways logo]()
$371
This Cheapflightsfares deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:06 am
ONT
- ATH
1 stop18h 39m
British Airways
Deal found 5/5![British Airways logo]()
$373
This Iberia deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:06 am
ONT
- ATH
1 stop18h 39m
Iberia
Deal found 5/6![Iberia logo]()
$383
This Ovago deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:06 am
ONT
- ATH
1 stop18h 39m
British Airways
Deal found 5/4![British Airways logo]()
$401
This Trip.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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.
Sat 8/82:43 pm
ONT
- ATH
1 stop35h 02m
Iberia
Deal found 5/4![Iberia logo]()
$406
This KLM deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 8/307:05 am
ONT
- ATH
1 stop17h 55m
KLM
Deal found 5/6![KLM logo]()
$411
This CheapOair deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:00 am
ONT
- ATH
2 stops19h 10m
Air Canada
Deal found 5/4![Air Canada logo]()
$415
This KLM deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 am
ONT
- ATH
1 stop18h 00m
KLM
Deal found 5/3![KLM logo]()
$417
This Priceline deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:00 am
ONT
- SKG
2 stops27h 30m
British Airways
Deal found 5/3![British Airways logo]()
$420
This British Airways deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1611:59 pm
ONT
- SKG
2 stops35h 16m
British Airways
Deal found 5/3![British Airways logo]()
$506
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 May 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $835 (British Airways) |
One-way from | $365 (Cheapflightsfares) |
Popular in | June |
Cheapest in | February |
Average price | $884 |
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 2,558,603 searches. Data last updated May 7, 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 - ATH
ONTATH
Ontario
Wed 7/15
1:18 pm-11:05 pm
2 stops23h 47m
Athens Eleftherios V.
Sat 7/25
12:10 pm-12:12 pm
2 stops58h 02m
$1,002
OntarioAthens
ONT - ATH
ONTATH
Ontario
Fri 10/9
7:00 am-11:00 am
1 stop18h 00m
Athens Eleftherios V.
Sun 10/18
11:30 am-10:14 pm
1 stop20h 44m
$1,129
OntarioAthens
ONT - ATH
ONTATH
Ontario
Thu 9/24
7:00 am-10:00 am
1 stop17h 00m
Athens Eleftherios V.
Thu 10/1
9:45 am-6:01 pm
1 stop18h 16m
$1,244
OntarioAthens
ONT - ATH
ONTATH
Ontario
Thu 7/2
5:00 am-11:05 pm
2 stops32h 05m
Athens Eleftherios V.
Wed 7/15
12:35 pm-10:51 pm
1 stop20h 16m
$1,261
OntarioAthens
ONT - ATH
ONTATH
Ontario
Tue 8/18
7:00 am-10:35 am
1 stop17h 35m
Athens Eleftherios V.
Sat 8/22
6:00 am-10:58 pm
2 stops26h 58m
$1,263
OntarioThessaloniki
ONT - SKG
ONTSKG
Ontario
Wed 7/8
11:50 pm-8:45 am
2 stops22h 55m
Thessaloniki Makedonia
Mon 9/7
9:15 pm-8:13 pm
2 stops56h 58m
$1,296
OntarioAthens
ONT - ATH
ONTATH
Ontario
Tue 6/23
6:00 am-2:55 pm
2 stops22h 55m
Athens Eleftherios V.
Fri 7/24
1:10 pm-10:51 pm
2 stops43h 41m
$1,373
Quickest round-trip
OntarioAthens
ONT - ATH
ONTATH
Ontario
Sat 7/25
7:05 am-9:20 am
1 stop16h 15m
Athens Eleftherios V.
Sun 8/2
9:45 am-6:23 pm
1 stop18h 38m
$1,416
OntarioAthens
ONT - ATH
ONTATH
Ontario
Sun 8/30
11:50 pm-3:20 am
2 stops41h 30m
Athens Eleftherios V.
Sun 9/27
3:35 pm-8:13 pm
2 stops38h 38m
$1,470
OntarioThessaloniki
ONT - SKG
ONTSKG
Ontario
Wed 8/19
11:50 pm-8:25 pm
2 stops34h 35m
Thessaloniki Makedonia
Wed 9/2
9:35 am-11:24 pm
2 stops23h 49m
$1,490
Showing 1-10 of 46 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
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Greece
Get insights into the airlines that provide service to Greece. 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 Greece. Reviews last updated May 7, 2026.
Read reviews from past customers who have flown United Airlines from Ontario to Greece. 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.
Entertainment
7.1
Comfort
7.3
Crew
8.1
Food
6.6
Overall
7.4
Boarding
7.7
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Entertainment
7.1
Comfort
7.3
Crew
8.1
Food
6.6
Overall
7.4
Boarding
7.7
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Related info for your journey
Find useful and relevant information for your journey from Ontario to Greece. 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 Ontario to Greece
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Greece by adding a car rental and/or hotel reservation to your travel itinerary.
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Ontario and Greece flights
Browse other Ontario and Greece flight options. Last updated on May 7, 2026.
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Top airline flying from Ontario to Greece
Discover the top airline that operate flights from Ontario to Greece. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$588 | Average$823 | FlexibilityNo cancel fee | On-time69% |