$316+ Cheap flights from Ontario (ONT) to Europe
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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CPH
Aug 2 — Aug 91
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Europe 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 EuropeExplore the most affordable flight options available from Ontario to Europe. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2026.
Explore the most affordable flight options available from Ontario to Europe. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2026.
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:10 am
ONT
- BCN
2 stops35h 50m
United Airlines
Wed 10/214:10 pm
BCN
- ONT
1 stop29h 08m
United Airlines
Deal found 6/30![United Airlines logo]()
$710
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:00 am
ONT
- BCN
2 stops17h 20m
United Airlines
Tue 10/611:15 am
BCN
- ONT
2 stops20h 34m
United Airlines
Deal found 6/30![United Airlines logo]()
$711
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:00 am
ONT
- BCN
1 stop21h 15m
United Airlines
Sat 11/143:10 pm
BCN
- ONT
1 stop36h 19m
United Airlines
Deal found 6/30![United Airlines logo]()
$712
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Mon 11/25:00 am
ONT
- MAD
2 stops18h 00m
United Airlines
Thu 1/286:00 am
MAD
- ONT
2 stops23h 20m
United Airlines
Deal found 7/1![United Airlines logo]()
$714
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 12/16:00 am
ONT
- MAD
2 stops18h 15m
United Airlines
Tue 12/81:25 pm
MAD
- ONT
2 stops18h 41m
United Airlines
Deal found 7/1![United Airlines logo]()
$715
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:00 am
ONT
- MAD
2 stops17h 00m
United Airlines
Thu 10/2911:00 am
MAD
- ONT
2 stops19h 53m
United Airlines
Deal found 6/30![United Airlines logo]()
$716
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Sun 8/165:00 am
ONT
- MAD
2 stops16h 50m
United Airlines
Tue 8/2512:45 pm
MAD
- ONT
2 stops41h 08m
United Airlines
Deal found 7/1![United Airlines logo]()
$724
This Ovago deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/91:13 pm
ONT
- FCO
1 stop13h 42m
Lufthansa
Wed 11/181:15 pm
FCO
- ONT
2 stops38h 14m
Lufthansa
Deal found 6/29![Lufthansa logo]()
$734
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:10 am
ONT
- BCN
1 stop22h 05m
United Airlines
Sat 8/224:10 pm
BCN
- ONT
1 stop29h 02m
United Airlines
Deal found 6/30![United Airlines logo]()
$737
This KAYAK deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:13 pm
ONT
- FCO
1 stop14h 42m
Lufthansa
Wed 11/111:55 pm
FCO
- ONT
1 stop16h 01m
Lufthansa
Deal found 6/29![Lufthansa logo]()
$738
This Gurufare deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/91:13 pm
ONT
- FCO
1 stop13h 42m
Lufthansa
Tue 11/1711:15 am
FCO
- ONT
2 stops40h 14m
Lufthansa
Deal found 6/29![Lufthansa logo]()
$739
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:01 am
ONT
- BCN
1 stop20h 19m
United Airlines
Thu 11/129:55 am
BCN
- ONT
2 stops19h 11m
United Airlines
Deal found 6/30![United Airlines logo]()
$740
Best flights from Ontario to EuropeDiscover carefully curated flight deals from Ontario to Europe that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2026.
Discover carefully curated flight deals from Ontario to Europe that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2026.
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/251:13 pm
ONT
- FCO
1 stop14h 42m
United Airlines
Thu 11/57:05 am
FCO
- ONT
2 stops22h 01m
United Airlines
Deal found 6/29![United Airlines logo]()
$744
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:00 pm
ONT
- ATH
2 stops53h 20m
Delta
Wed 9/166:00 am
ATH
- ONT
2 stops26h 40m
Delta
Deal found 7/2![Delta logo]()
$800
This British Airways deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:05 am
ONT
- ATH
1 stop18h 40m
British Airways
Tue 9/12:00 pm
ATH
- ONT
1 stop18h 59m
British Airways
Deal found 6/30![British Airways logo]()
$827
This KLM deal was found by Cheapflights users on 7/3. 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 11/127:00 am
ONT
- MAD
1 stop17h 55m
KLM
Sun 11/2211:55 am
MAD
- ONT
1 stop19h 19m
KLM
Deal found 7/3![KLM logo]()
$863
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:12 pm
ONT
- LHR
1 stop18h 53m
Alaska Airlines
Tue 9/295:00 pm
LHR
- ONT
1 stop29h 16m
Alaska Airlines
Deal found 7/1![Alaska Airlines logo]()
$972
This Icelandair deal was found by Cheapflights users on 7/3. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:55 am
ONT
- LHR
2 stops17h 00m
Multiple Airlines
Wed 9/91:05 pm
LHR
- ONT
2 stops16h 55m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$1,002
This JetBlue deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:13 pm
ONT
- LHR
1 stop13h 32m
JetBlue
Mon 8/318:15 am
LHR
- ONT
1 stop22h 23m
JetBlue
Deal found 6/28![JetBlue logo]()
$1,041
This Qatar Airways deal was found by Cheapflights users on 7/2. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:12 pm
ONT
- IST
2 stops38h 03m
Qatar Airways
Wed 10/78:05 pm
IST
- ONT
2 stops31h 58m
Qatar Airways
Deal found 7/2![Qatar Airways logo]()
$1,084
This Turkish Airlines deal was found by Cheapflights users on 7/2. 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.
Mon 9/711:50 pm
ONT
- IST
1 stop19h 40m
Turkish Airlines
Thu 9/177:20 am
IST
- ONT
1 stop22h 53m
Turkish Airlines
Deal found 7/2![Turkish Airlines logo]()
$1,215
This Etihad Airways deal was found by Cheapflights users on 7/1. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2611:58 pm
ONT
- IST
2 stops50h 37m
Etihad Airways
Thu 9/101:50 pm
IST
- ONT
2 stops40h 23m
Etihad Airways
Deal found 7/1![Etihad Airways logo]()
$1,393
This Air Serbia deal was found by Cheapflights users on 7/1. 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 9/711:50 pm
ONT
- ATH
2 stops29h 00m
Air Serbia
Tue 9/154:30 pm
ATH
- ONT
2 stops37h 43m
Air Serbia
Deal found 7/1![Air Serbia logo]()
$1,410
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Mon 8/101:18 pm
ONT
- FCO
1 stop14h 02m
United Airlines
Wed 8/262:20 pm
FCO
- ONT
1 stop15h 33m
United Airlines
Deal found 7/1![United Airlines logo]()
$768
This British Airways deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:00 am
ONT
- FRA
1 stop16h 15m
British Airways
Tue 11/1010:15 am
FRA
- ONT
1 stop21h 08m
British Airways
Deal found 6/28![British Airways logo]()
$843
This United Airlines deal was found by Cheapflights users on 7/3. 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 8/261:56 pm
ONT
- ATH
2 stops23h 09m
United Airlines
Fri 9/256:00 am
ATH
- ONT
2 stops24h 58m
United Airlines
Deal found 7/3![United Airlines logo]()
$793
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2310:00 pm
ONT
- MAD
1 stop29h 15m
Delta
Tue 9/89:50 am
MAD
- ONT
1 stop19h 17m
Delta
Deal found 7/1![Delta logo]()
$897
This KLM deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:17 pm
ONT
- MAD
1 stop14h 58m
KLM
Sun 10/49:50 am
MAD
- ONT
1 stop17h 19m
KLM
Deal found 6/28![KLM logo]()
$898
This British Airways deal was found by Cheapflights users on 7/2. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am
ONT
- FRA
1 stop17h 45m
British Airways
Wed 9/210:55 am
FRA
- ONT
1 stop16h 52m
British Airways
Deal found 7/2![British Airways logo]()
$844
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 9/237:00 am
ONT
- MAD
2 stops16h 05m
United Airlines
Mon 10/512:45 pm
MAD
- ONT
2 stops17h 13m
United Airlines
Deal found 7/1![United Airlines logo]()
$821
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:02 am
ONT
- FCO
1 stop22h 13m
Alaska Airlines
Mon 7/203:25 pm
FCO
- ONT
1 stop16h 46m
Alaska Airlines
Deal found 7/1![Alaska Airlines logo]()
$1,004
This KLM deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:17 pm
ONT
- MAD
1 stop14h 58m
KLM
Sat 10/179:50 am
MAD
- ONT
1 stop18h 42m
KLM
Deal found 6/28![KLM logo]()
$933
This Icelandair deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:50 pm
ONT
- LGW
2 stops16h 50m
Multiple Airlines
Tue 8/251:00 pm
LGW
- ONT
2 stops17h 00m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,028
This British Airways deal was found by Cheapflights users on 7/2. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:33 pm
ONT
- FRA
2 stops17h 27m
British Airways
Wed 9/910:55 am
FRA
- ONT
1 stop20h 42m
British Airways
Deal found 7/2![British Airways logo]()
$852
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:00 am
ONT
- FRA
2 stops23h 20m
Delta
Sat 7/257:00 am
FRA
- ONT
2 stops24h 52m
Delta
Deal found 6/30![Delta logo]()
$939
This Alaska Airlines deal was found by Cheapflights users on 7/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/239:20 pm
ONT
- FCO
1 stop30h 55m
Alaska Airlines
Tue 8/43:15 pm
FCO
- ONT
1 stop16h 56m
Alaska Airlines
Deal found 7/3![Alaska Airlines logo]()
$1,010
This Qatar Airways deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2512:12 pm
ONT
- IST
2 stops32h 08m
Qatar Airways
Mon 10/198:05 pm
IST
- ONT
2 stops31h 58m
Qatar Airways
Deal found 6/28![Qatar Airways logo]()
$1,117
This Turkish Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/69:10 pm
ONT
- BCN
2 stops31h 20m
Multiple Airlines
Sat 10/177:40 am
BCN
- ONT
2 stops25h 05m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,036
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:05 am
ONT
- LHR
2 stops19h 15m
Delta
Thu 8/206:30 am
LHR
- ONT
2 stops23h 22m
Delta
Deal found 7/1![Delta logo]()
$942
This KLM deal was found by Cheapflights users on 7/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/237:00 am
ONT
- FCO
1 stop16h 15m
KLM
Tue 1/121:30 pm
FCO
- ONT
1 stop17h 44m
KLM
Deal found 7/1![KLM logo]()
$942
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Sat 10/35:00 am
ONT
- MAD
2 stops16h 50m
United Airlines
Sat 10/1011:15 am
MAD
- ONT
2 stops20h 34m
United Airlines
Deal found 7/2![United Airlines logo]()
$871
This British Airways deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:05 am
ONT
- ATH
1 stop18h 40m
British Airways
Wed 8/192:00 pm
ATH
- ONT
1 stop18h 59m
British Airways
Deal found 6/30![British Airways logo]()
$902
Last-minute flights from Ontario to EuropeDiscover last-minute flight deals from Ontario to Europe. Data last updated July 3, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Europe. Data last updated July 3, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:10 am
ONT
- BCN
1 stop22h 05m
United Airlines
Sat 8/224:10 pm
BCN
- ONT
1 stop29h 02m
United Airlines
Deal found 6/30![United Airlines logo]()
$737
This flugladen.de deal was found by Cheapflights users on 7/2. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/912:08 pm
ONT
- FCO
1 stop16h 07m
Alaska Airlines
Tue 8/253:15 pm
FCO
- ONT
1 stop28h 49m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$757
This Kissandfly.com deal was found by Cheapflights users on 7/1. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/101:18 pm
ONT
- FCO
1 stop14h 02m
Lufthansa
Wed 8/262:20 pm
FCO
- ONT
1 stop15h 33m
Lufthansa
Deal found 7/1![Lufthansa logo]()
$765
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Mon 8/101:18 pm
ONT
- FCO
1 stop14h 02m
United Airlines
Wed 8/262:20 pm
FCO
- ONT
1 stop15h 33m
United Airlines
Deal found 7/1![United Airlines logo]()
$768
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/139:01 am
ONT
- BCN
1 stop20h 19m
United Airlines
Sat 8/226:40 am
BCN
- ONT
3 stops22h 21m
United Airlines
Deal found 7/1![United Airlines logo]()
$741
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/135:00 am
ONT
- MAD
2 stops16h 50m
United Airlines
Thu 8/201:05 pm
MAD
- ONT
2 stops18h 54m
United Airlines
Deal found 7/1![United Airlines logo]()
$745
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Sun 8/165:00 am
ONT
- MAD
2 stops16h 50m
United Airlines
Tue 8/2512:45 pm
MAD
- ONT
2 stops41h 08m
United Airlines
Deal found 7/1![United Airlines logo]()
$724
This Booking.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:54 am
ONT
- FRA
1 stop14h 56m
Multiple Airlines
Mon 8/3111:30 am
FRA
- ONT
1 stop14h 40m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$745
This Expedia deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:29 am
ONT
- MAD
1 stop13h 36m
British Airways
Tue 10/1312:40 pm
MAD
- ONT
1 stop16h 14m
British Airways
Deal found 6/29![British Airways logo]()
$763
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:00 am
ONT
- BCN
1 stop21h 15m
United Airlines
Sun 11/153:10 pm
BCN
- ONT
1 stop36h 19m
United Airlines
Deal found 6/30![United Airlines logo]()
$712
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:01 am
ONT
- BCN
1 stop20h 19m
United Airlines
Thu 11/129:55 am
BCN
- ONT
2 stops19h 11m
United Airlines
Deal found 6/30![United Airlines logo]()
$740
This Cheapflightsfares deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:45 am
ONT
- FRA
1 stop14h 45m
Multiple Airlines
Sat 9/511:25 am
FRA
- ONT
1 stop17h 59m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$769
One-way flights from Ontario to EuropeSearch for one-way flight options from Ontario to Europe. Find affordable one-way fares based on user searches. Data last updated July 3, 2026.
Search for one-way flight options from Ontario to Europe. Find affordable one-way fares based on user searches. Data last updated July 3, 2026.
This Trip.com deal was found by Cheapflights users on 7/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:00 am
ONT
- FRA
2 stops39h 25m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$316
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:59 pm
ONT
- LHR
1 stop13h 16m
British Airways
Deal found 7/2![British Airways logo]()
$318
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:04 pm
ONT
- LHR
1 stop13h 26m
British Airways
Deal found 7/2![British Airways logo]()
$319
This Cheapflightsfares deal was found by Cheapflights users on 7/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:34 am
ONT
- ATH
1 stop20h 11m
British Airways
Deal found 7/1![British Airways logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/19:36 am
ONT
- BCN
3 stops52h 49m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$319
This Cheapflightsfares deal was found by Cheapflights users on 7/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2312:46 pm
ONT
- LHR
1 stop13h 14m
British Airways
Deal found 7/1![British Airways logo]()
$320
This Cheapflightsfares deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:00 am
ONT
- ATH
1 stop18h 45m
British Airways
Deal found 6/28![British Airways logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/64:09 pm
ONT
- LGW
2 stops33h 51m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$320
This Cheapflightsfares deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/61:05 pm
ONT
- LHR
1 stop13h 25m
British Airways
Deal found 6/28![British Airways logo]()
$321
This oojo deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1711:59 pm
ONT
- LHR
1 stop22h 21m
British Airways
Deal found 6/30![British Airways logo]()
$322
This oojo deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/275:34 am
ONT
- FRA
1 stop18h 11m
British Airways
Deal found 6/29![British Airways logo]()
$322
This oojo deal was found by Cheapflights users on 7/2. 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.
Wed 7/227:00 am
ONT
- ATH
1 stop18h 45m
British Airways
Deal found 7/2![British Airways logo]()
$323
Find flight deals from Ontario to Europe
Keep the following information in mind while searching for Ontario to Europe flight deals. Data was last updated July 3, 2026.
Round-trip from | $710 (United Airlines) |
|---|---|
One-way from | $316 (Trip.com) |
Popular in | June |
Cheapest in | February |
Average price | $1,265 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Europe 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 July 3, 2026.
Use the filters below to find and compare flights from Ontario to Europe that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioRome
ONT - FCO
ONTFCO
Ontario
Sun 10/25
1:13 pm-11:55 am
1 stop14h 42m
Rome Fiumicino
Thu 11/5
7:05 am-8:06 pm
2 stops22h 01m
$744
Quickest round-trip
OntarioRome
ONT - FCO
ONTFCO
Ontario
Mon 8/10
1:18 pm-12:20 pm
1 stop14h 02m
Rome Fiumicino
Wed 8/26
2:20 pm-8:53 pm
1 stop15h 33m
$768
OntarioAthens
ONT - ATH
ONTATH
Ontario
Wed 8/26
1:56 pm-11:05 pm
2 stops23h 09m
Athens Eleftherios V.
Fri 9/25
6:00 am-8:58 pm
2 stops24h 58m
$793
OntarioAthens
ONT - ATH
ONTATH
Ontario
Fri 8/28
10:00 pm-1:20 pm
2 stops53h 20m
Athens Eleftherios V.
Wed 9/16
6:00 am-10:40 pm
2 stops26h 40m
$800
OntarioMadrid
ONT - MAD
ONTMAD
Ontario
Wed 9/23
7:00 am-8:05 am
2 stops16h 05m
Madrid Barajas
Mon 10/5
12:45 pm-8:58 pm
2 stops17h 13m
$821
OntarioAthens
ONT - ATH
ONTATH
Ontario
Mon 8/17
7:05 am-11:45 am
1 stop18h 40m
Athens Eleftherios V.
Tue 9/1
2:00 pm-10:59 pm
1 stop18h 59m
$827
OntarioFrankfurt am Main
ONT - FRA
ONTFRA
Ontario
Tue 10/27
7:00 am-7:15 am
1 stop16h 15m
Frankfurt am Main
Tue 11/10
10:15 am-10:23 pm
1 stop21h 08m
$843
OntarioFrankfurt am Main
ONT - FRA
ONTFRA
Ontario
Thu 8/20
6:00 am-8:45 am
1 stop17h 45m
Frankfurt am Main
Wed 9/2
10:55 am-6:47 pm
1 stop16h 52m
$844
OntarioFrankfurt am Main
ONT - FRA
ONTFRA
Ontario
Mon 8/17
12:33 pm-3:00 pm
2 stops17h 27m
Frankfurt am Main
Wed 9/9
10:55 am-10:37 pm
1 stop20h 42m
$852
OntarioMadrid
ONT - MAD
ONTMAD
Ontario
Thu 11/12
7:00 am-9:55 am
1 stop17h 55m
Madrid Barajas
Sun 11/22
11:55 am-10:14 pm
1 stop19h 19m
$863
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Europe
Have a flexible travel schedule? Discover the best time to fly to Europe from Ontario with our price prediction graph.
ONT-FCO
ONT-ATH
ONT-MAD
ONT-LHR
ONT-IST
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 Europe
ONT-EU0
ONT-FCO
ONT-ATH
ONT-MAD
ONT-LHR
What is the cheapest month to book a flight from Ontario to Europe?
Currently, September is the cheapest month in which you can book a flight from Ontario to Europe (average of $251). Flying from Ontario to Europe in June is currently the most expensive (average of $891). 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.
Reviews of airlines servicing Europe
Get insights into the airlines that provide service to Europe. 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 Europe. Reviews last updated July 3, 2026.
See what other customers who have flown with KLM,Delta, andUnited Airlines from Ontario to Europe have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.2
Crew
8.4
Food
7.3
Comfort
7.7
Boarding
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Crew
8.4
Food
7.3
Comfort
7.7
Boarding
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Crew
8.4
Food
7.3
Comfort
7.7
Boarding
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Crew
8.4
Food
7.3
Comfort
7.7
Boarding
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Crew
8.4
Food
7.3
Comfort
7.7
Boarding
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Crew
8.4
Food
7.3
Comfort
7.7
Boarding
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Europe. 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 Europe
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Europe by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Europe by cabin class
Find flights from Ontario to Europe, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Europe flights
Browse other Ontario and Europe flight options. Last updated on July 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Fly to Europe countries
Consider these flights traveling to countries located in Europe.
Ontario to Europe flights
Consider these flights traveling from Ontario to Europe.
Top 6 airlines flying from Ontario to Europe
Discover the top 6 airlines that operate flights from Ontario to Europe. 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 July 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$439 | Average$702 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$497 | Average$687 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$504 | Average$876 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$515 | Average$907 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$557 | Average$973 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$580 | Average$967 | FlexibilityNo cancel fee | On-time75% |