$335+ 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
May 5 — May 121
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Europe
Cheapest
Best
Last-minute
One-way
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 April 5, 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 April 5, 2026.
This Gotogate deal was found by Cheapflights users on 3/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:35 pm
ONT
- FCO
1 stop14h 10m
British Airways
Wed 11/1111:00 am
FCO
- ONT
1 stop20h 23m
British Airways
Deal found 3/30![British Airways logo]()
$708
This Expedia deal was found by Cheapflights users on 4/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:47 am
ONT
- FCO
1 stop14h 58m
British Airways
Tue 11/2411:00 am
FCO
- ONT
1 stop20h 23m
British Airways
Deal found 4/3![British Airways logo]()
$716
This oojo deal was found by Cheapflights users on 4/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1210:25 am
ONT
- FCO
1 stop16h 40m
British Airways
Tue 8/251:30 pm
FCO
- ONT
1 stop16h 58m
British Airways
Deal found 4/1![British Airways logo]()
$722
This American Airlines deal was found by Cheapflights users on 4/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:00 pm
ONT
- FCO
2 stops18h 25m
American Airlines
Tue 8/251:30 pm
FCO
- ONT
1 stop16h 58m
American Airlines
Deal found 4/1![American Airlines logo]()
$723
This KLM deal was found by Cheapflights users on 4/2. 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.
Tue 12/297:00 am
ONT
- FCO
1 stop15h 55m
KLM
Tue 1/1212:40 pm
FCO
- ONT
1 stop18h 34m
KLM
Deal found 4/2![KLM logo]()
$724
This United Airlines deal was found by Cheapflights users on 4/1. 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 8/171:44 pm
ONT
- FCO
1 stop14h 36m
United Airlines
Wed 8/2610:00 am
FCO
- ONT
2 stops21h 58m
United Airlines
Deal found 4/1![United Airlines logo]()
$725
This KLM deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 am
ONT
- FCO
1 stop18h 50m
KLM
Tue 8/256:30 am
FCO
- ONT
2 stops20h 31m
KLM
Deal found 3/31![KLM logo]()
$726
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/155:10 am
ONT
- FCO
1 stop22h 10m
United Airlines
Thu 4/232:20 pm
FCO
- ONT
1 stop15h 16m
United Airlines
Deal found 4/1![United Airlines logo]()
$727
This United Airlines deal was found by Cheapflights users on 4/1. 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 8/185:00 am
ONT
- FCO
2 stops21h 45m
United Airlines
Tue 8/251:20 pm
FCO
- ONT
2 stops18h 38m
United Airlines
Deal found 4/1![United Airlines logo]()
$728
This Delta deal was found by Cheapflights users on 4/1. 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.
Tue 8/189:55 am
ONT
- FCO
2 stops22h 35m
Delta
Wed 8/266:30 am
FCO
- ONT
2 stops18h 44m
Delta
Deal found 4/1![Delta logo]()
$730
This Air France deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/179:55 am
ONT
- FCO
2 stops16h 05m
Multiple Airlines
Tue 8/256:30 am
FCO
- ONT
2 stops20h 31m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$731
This Delta deal was found by Cheapflights users on 4/1. 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.
Tue 4/1410:15 pm
ONT
- FCO
1 stop27h 35m
Delta
Tue 4/219:45 am
FCO
- ONT
1 stop17h 48m
Delta
Deal found 4/1![Delta logo]()
$732
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 April 5, 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 April 5, 2026.
This Delta deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1410:15 pm
ONT
- FCO
1 stop27h 35m
Delta
Wed 4/229:45 am
FCO
- ONT
1 stop17h 48m
Delta
Deal found 4/2![Delta logo]()
$732
This KLM deal was found by Cheapflights users on 4/1. 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.
Sun 4/197:05 am
ONT
- FCO
1 stop15h 30m
KLM
Tue 5/59:45 am
FCO
- ONT
1 stop17h 48m
KLM
Deal found 4/1![KLM logo]()
$750
This United Airlines deal was found by Cheapflights users on 4/2. 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 9/187:13 pm
ONT
- MAD
2 stops51h 52m
United Airlines
Tue 9/291:30 pm
MAD
- ONT
2 stops41h 56m
United Airlines
Deal found 4/2![United Airlines logo]()
$786
This Alaska Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/93:26 pm
ONT
- FCO
1 stop36h 49m
Alaska Airlines
Mon 5/183:25 pm
FCO
- ONT
1 stop17h 33m
Alaska Airlines
Deal found 3/31![Alaska Airlines logo]()
$852
This Icelandair deal was found by Cheapflights users on 4/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2610:39 am
ONT
- LHR
2 stops17h 16m
Multiple Airlines
Wed 5/61:05 pm
LHR
- ONT
2 stops18h 43m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$980
This British Airways deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:59 am
ONT
- MAD
1 stop13h 06m
British Airways
Sun 5/173:55 pm
MAD
- ONT
1 stop16h 51m
British Airways
Deal found 3/31![British Airways logo]()
$1,036
This Qatar Airways deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2310:39 am
ONT
- IST
2 stops38h 36m
Qatar Airways
Fri 5/151:45 pm
IST
- ONT
2 stops39h 17m
Qatar Airways
Deal found 3/31![Qatar Airways logo]()
$1,162
This Air Serbia deal was found by Cheapflights users on 4/3. 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 9/711:50 pm
ONT
- ATH
2 stops41h 30m
Air Serbia
Sat 9/194:30 pm
ATH
- ONT
2 stops61h 43m
Air Serbia
Deal found 4/3![Air Serbia logo]()
$1,175
This Turkish Airlines deal was found by Cheapflights users on 4/1. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2310:41 pm
ONT
- BCN
2 stops27h 04m
Turkish Airlines
Fri 6/512:10 pm
BCN
- ONT
2 stops41h 37m
Turkish Airlines
Deal found 4/1![Turkish Airlines logo]()
$1,368
This KLM deal was found by Cheapflights users on 4/2. 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.
Sat 4/1810:15 pm
ONT
- FCO
1 stop24h 20m
KLM
Thu 4/309:45 am
FCO
- ONT
1 stop20h 15m
KLM
Deal found 4/2![KLM logo]()
$757
This Delta deal was found by Cheapflights users on 4/3. 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.
Sun 4/197:05 am
ONT
- FCO
1 stop15h 30m
Delta
Tue 5/59:45 am
FCO
- ONT
1 stop17h 48m
Delta
Deal found 4/3![Delta logo]()
$823
This United Airlines deal was found by Cheapflights users on 4/3. 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 8/187:00 am
ONT
- DUB
1 stop18h 45m
United Airlines
Tue 9/19:50 am
DUB
- ONT
2 stops40h 29m
United Airlines
Deal found 4/3![United Airlines logo]()
$848
This KLM deal was found by Cheapflights users on 4/2. 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.
Thu 4/167:05 am
ONT
- FCO
1 stop15h 30m
KLM
Thu 4/239:45 am
FCO
- ONT
1 stop17h 48m
KLM
Deal found 4/2![KLM logo]()
$777
This Alaska Airlines deal was found by Cheapflights users on 4/3. 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.
Fri 5/87:59 pm
ONT
- FCO
1 stop32h 16m
Alaska Airlines
Sun 5/173:25 pm
FCO
- ONT
1 stop28h 45m
Alaska Airlines
Deal found 4/3![Alaska Airlines logo]()
$919
This Delta deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:15 pm
ONT
- ATH
2 stops29h 05m
Delta
Thu 5/149:45 am
ATH
- ONT
2 stops33h 08m
Delta
Deal found 4/2![Delta logo]()
$848
This KLM deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/310:15 pm
ONT
- FCO
1 stop24h 20m
KLM
Thu 5/1412:20 pm
FCO
- ONT
1 stop19h 14m
KLM
Deal found 3/31![KLM logo]()
$787
This United Airlines deal was found by Cheapflights users on 4/4. 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.
Mon 8/175:45 am
ONT
- DUB
2 stops21h 25m
United Airlines
Fri 9/49:30 am
DUB
- ONT
2 stops16h 49m
United Airlines
Deal found 4/4![United Airlines logo]()
$884
This Icelandair deal was found by Cheapflights users on 4/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2010:33 am
ONT
- LHR
2 stops17h 22m
Multiple Airlines
Tue 5/51:05 pm
LHR
- ONT
2 stops16h 45m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$986
This British Airways deal was found by Cheapflights users on 4/3. 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 9/610:25 am
ONT
- MAD
1 stop13h 40m
British Airways
Mon 10/53:55 pm
MAD
- ONT
1 stop16h 11m
British Airways
Deal found 4/3![British Airways logo]()
$1,042
This Delta deal was found by Cheapflights users on 4/1. 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.
Tue 8/187:00 am
ONT
- DUB
1 stop17h 45m
Delta
Tue 9/111:00 am
DUB
- ONT
1 stop15h 01m
Delta
Deal found 4/1![Delta logo]()
$879
This KLM deal was found by Cheapflights users on 4/3. 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 4/237:05 am
ONT
- FCO
1 stop15h 30m
KLM
Fri 5/89:45 am
FCO
- ONT
1 stop17h 51m
KLM
Deal found 4/3![KLM logo]()
$807
This United Airlines deal was found by Cheapflights users on 4/3. 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.
Mon 4/201:34 pm
ONT
- LHR
1 stop14h 51m
United Airlines
Tue 5/52:50 pm
LHR
- ONT
1 stop13h 46m
United Airlines
Deal found 4/3![United Airlines logo]()
$909
This British Airways deal was found by Cheapflights users on 4/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:25 am
ONT
- MAD
1 stop13h 40m
British Airways
Tue 9/293:55 pm
MAD
- ONT
1 stop16h 11m
British Airways
Deal found 4/1![British Airways logo]()
$1,075
This Icelandair deal was found by Cheapflights users on 4/4. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2510:39 am
ONT
- LHR
2 stops17h 16m
Multiple Airlines
Sun 5/31:05 pm
LHR
- ONT
2 stops18h 43m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$1,084
This KLM deal was found by Cheapflights users on 4/4. 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.
Mon 4/207:05 am
ONT
- FCO
1 stop15h 30m
KLM
Mon 4/279:45 am
FCO
- ONT
1 stop17h 48m
KLM
Deal found 4/4![KLM logo]()
$817
This Qatar Airways deal was found by Cheapflights users on 4/4. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1110:39 am
ONT
- IST
2 stops34h 41m
Qatar Airways
Fri 5/1511:00 am
IST
- ONT
2 stops42h 02m
Qatar Airways
Deal found 4/4![Qatar Airways logo]()
$1,210
This United Airlines deal was found by Cheapflights users on 4/4. 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 5/57:00 am
ONT
- DUB
1 stop18h 45m
United Airlines
Fri 5/159:20 am
DUB
- ONT
2 stops40h 41m
United Airlines
Deal found 4/4![United Airlines logo]()
$933
This Air Serbia deal was found by Cheapflights users on 4/2. 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.
Mon 9/711:50 pm
ONT
- ATH
2 stops29h 00m
Air Serbia
Sun 9/134:30 am
ATH
- ONT
2 stops49h 43m
Air Serbia
Deal found 4/2![Air Serbia logo]()
$1,243
This Delta deal was found by Cheapflights users on 4/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:05 am
ONT
- IST
2 stops32h 15m
Delta
Mon 5/115:20 pm
IST
- ONT
2 stops35h 16m
Delta
Deal found 4/4![Delta logo]()
$938
This KAYAK deal was found by Cheapflights users on 4/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:59 pm
ONT
- IST
2 stops31h 36m
British Airways
Tue 5/122:35 pm
IST
- ONT
2 stops35h 47m
British Airways
Deal found 4/4![British Airways logo]()
$1,116
Last-minute flights from Ontario to EuropeDiscover last-minute flight deals from Ontario to Europe. Data last updated April 5, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Europe. Data last updated April 5, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:49 pm
ONT
- FCO
1 stop33h 51m
United Airlines
Thu 4/2311:30 am
FCO
- ONT
2 stops44h 01m
United Airlines
Deal found 3/31![United Airlines logo]()
$737
This oojo deal was found by Cheapflights users on 4/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:00 am
ONT
- FCO
1 stop21h 05m
British Airways
Thu 4/231:10 pm
FCO
- ONT
1 stop19h 36m
British Airways
Deal found 4/3![British Airways logo]()
$752
This Delta deal was found by Cheapflights users on 4/1. 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.
Tue 4/1410:15 pm
ONT
- FCO
1 stop27h 35m
Delta
Tue 4/219:45 am
FCO
- ONT
1 stop17h 48m
Delta
Deal found 4/1![Delta logo]()
$732
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/145:10 am
ONT
- FCO
1 stop22h 10m
United Airlines
Tue 4/216:50 am
FCO
- ONT
2 stops20h 12m
United Airlines
Deal found 4/1![United Airlines logo]()
$755
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/151:27 pm
ONT
- FCO
1 stop15h 13m
United Airlines
Tue 4/216:50 am
FCO
- ONT
2 stops20h 12m
United Airlines
Deal found 4/1![United Airlines logo]()
$725
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/155:10 am
ONT
- FCO
1 stop22h 10m
United Airlines
Thu 4/232:20 pm
FCO
- ONT
1 stop15h 16m
United Airlines
Deal found 4/1![United Airlines logo]()
$727
This FlightHub deal was found by Cheapflights users on 4/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/181:34 pm
ONT
- FCO
2 stops35h 46m
Air Canada
Thu 4/3011:30 am
FCO
- ONT
2 stops42h 06m
Air Canada
Deal found 4/3![Air Canada logo]()
$751
This KLM deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:05 am
ONT
- FCO
1 stop15h 30m
KLM
Tue 5/59:45 am
FCO
- ONT
1 stop17h 48m
KLM
Deal found 3/31![KLM logo]()
$747
This Delta deal was found by Cheapflights users on 4/1. 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 4/197:05 am
ONT
- FCO
1 stop15h 30m
Delta
Tue 5/59:45 am
FCO
- ONT
1 stop17h 48m
Delta
Deal found 4/1![Delta logo]()
$748
This Delta deal was found by Cheapflights users on 4/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:53 am
ONT
- IST
2 stops29h 37m
Delta
Sat 5/95:20 pm
IST
- ONT
2 stops32h 57m
Delta
Deal found 4/4![Delta logo]()
$838
This KLM deal was found by Cheapflights users on 4/1. 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.
Tue 5/510:15 pm
ONT
- ATH
1 stop26h 45m
KLM
Thu 5/149:45 am
ATH
- ONT
1 stop18h 51m
KLM
Deal found 4/1![KLM logo]()
$843
This Expedia deal was found by Cheapflights users on 4/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:10 pm
ONT
- DUB
1 stop25h 50m
JetBlue
Thu 5/2811:30 am
DUB
- ONT
1 stop17h 17m
JetBlue
Deal found 4/1![JetBlue logo]()
$828
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 April 5, 2026.
Search for one-way flight options from Ontario to Europe. Find affordable one-way fares based on user searches. Data last updated April 5, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/2. 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.
Tue 8/412:39 pm
ONT
- FCO
1 stop14h 26m
British Airways
Deal found 4/2![British Airways logo]()
$335
This United Airlines deal was found by Cheapflights users on 4/1. 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 8/51:18 pm
ONT
- FCO
1 stop14h 02m
United Airlines
Deal found 4/1![United Airlines logo]()
$346
This Cheapflightsfares deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:25 am
ONT
- MAD
1 stop13h 40m
British Airways
Deal found 3/31![British Airways logo]()
$347
This Cheapflightsfares deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1210:25 am
ONT
- MAD
1 stop13h 40m
British Airways
Deal found 3/31![British Airways logo]()
$348
This United Airlines deal was found by Cheapflights users on 4/1. 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 8/95:00 am
ONT
- FCO
2 stops19h 15m
United Airlines
Deal found 4/1![United Airlines logo]()
$350
This Booking.com deal was found by Cheapflights users on 4/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/11:18 pm
ONT
- FCO
2 stops37h 27m
Air Canada
Deal found 4/2![Air Canada logo]()
$351
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1110:25 am
ONT
- MAD
1 stop13h 40m
American Airlines
Deal found 3/31![American Airlines logo]()
$351
This British Airways deal was found by Cheapflights users on 4/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/284:59 pm
ONT
- MAD
2 stops18h 11m
British Airways
Deal found 4/1![British Airways logo]()
$352
This oojo deal was found by Cheapflights users on 4/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:44 am
ONT
- MAD
1 stop18h 21m
British Airways
Deal found 4/3![British Airways logo]()
$354
This Iberia deal was found by Cheapflights users on 4/1. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:22 pm
ONT
- MAD
1 stop15h 03m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$355
This oojo deal was found by Cheapflights users on 4/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/111:59 pm
ONT
- FCO
1 stop27h 06m
British Airways
Deal found 4/3![British Airways logo]()
$356
This United Airlines deal was found by Cheapflights users on 4/4. 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.
Sat 8/14:20 pm
ONT
- FCO
1 stop36h 20m
United Airlines
Deal found 4/4![United Airlines logo]()
$357
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 April 5, 2026.
Round-trip from | $704 (Delta) |
|---|---|
One-way from | $335 (Cheapflightsfares) |
Popular in | June |
Cheapest in | February |
Average price | $777 |
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 April 5, 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
Tue 4/14
10:15 pm-10:50 am
1 stop27h 35m
Rome Fiumicino
Wed 4/22
9:45 am-6:33 pm
1 stop17h 48m
$732
OntarioRome
ONT - FCO
ONTFCO
Ontario
Sun 4/19
7:05 am-7:35 am
1 stop15h 30m
Rome Fiumicino
Tue 5/5
9:45 am-6:33 pm
1 stop17h 48m
$750
OntarioRome
ONT - FCO
ONTFCO
Ontario
Sat 4/18
10:15 pm-7:35 am
1 stop24h 20m
Rome Fiumicino
Thu 4/30
9:45 am-9:00 pm
1 stop20h 15m
$757
OntarioRome
ONT - FCO
ONTFCO
Ontario
Thu 4/16
7:05 am-7:35 am
1 stop15h 30m
Rome Fiumicino
Thu 4/23
9:45 am-6:33 pm
1 stop17h 48m
$777
OntarioMadrid
ONT - MAD
ONTMAD
Ontario
Fri 9/18
7:13 pm-8:05 am
2 stops51h 52m
Madrid Barajas
Tue 9/29
1:30 pm-10:26 pm
2 stops41h 56m
$786
OntarioRome
ONT - FCO
ONTFCO
Ontario
Sun 5/3
10:15 pm-7:35 am
1 stop24h 20m
Rome Fiumicino
Thu 5/14
12:20 pm-10:34 pm
1 stop19h 14m
$787
OntarioRome
ONT - FCO
ONTFCO
Ontario
Thu 4/23
7:05 am-7:35 am
1 stop15h 30m
Rome Fiumicino
Fri 5/8
9:45 am-6:36 pm
1 stop17h 51m
$807
OntarioRome
ONT - FCO
ONTFCO
Ontario
Mon 4/20
7:05 am-7:35 am
1 stop15h 30m
Rome Fiumicino
Mon 4/27
9:45 am-6:33 pm
1 stop17h 48m
$817
OntarioRome
ONT - FCO
ONTFCO
Ontario
Sun 4/19
7:05 am-7:35 am
1 stop15h 30m
Rome Fiumicino
Tue 5/5
9:45 am-6:33 pm
1 stop17h 48m
$823
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Tue 8/18
7:00 am-9:45 am
1 stop18h 45m
Dublin
Tue 9/1
9:50 am-6:19 pm
2 stops40h 29m
$848
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-MAD
ONT-ATH
ONT-LHR
ONT-AMS
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-MAD
ONT-ATH
ONT-LHR
What is the cheapest month to book a flight from Ontario to Europe?
Currently, October is the cheapest month in which you can book a flight from Ontario to Europe (average of $229). Flying from Ontario to Europe in June is currently the most expensive (average of $599). 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 April 5, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican 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
7.8
Boarding
8.1
Overall
7.9
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.8
Boarding
8.1
Overall
7.9
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.8
Boarding
8.1
Overall
7.9
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.8
Boarding
8.1
Overall
7.9
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.8
Boarding
8.1
Overall
7.9
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.8
Boarding
8.1
Overall
7.9
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top countries
Top destinations
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 April 5, 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 April 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$439 | Average$853 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$497 | Average$757 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$504 | Average$904 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$515 | Average$874 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$557 | Average$918 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$580 | Average$967 | FlexibilityNo cancel fee | On-time75% |