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$226+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CPH
feb. 14 — feb. 211
sáb. 2/14
sáb. 2/21
1 adult, Economy
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Cheap flight deals from Ontario to Europe

Keep the following information in mind while searching for Ontario to Europe flight deals. Data was last updated enero 15, 2026.

Round-trip from

$414
(oojo)

One-way from

$226
(oojo)

Popular in

June

Cheapest in

January

Average price

$752
From Ontario to Europe
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One-way flight from Ontario to Europe
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Highest demand for flights based on searches. 18% potential increase in price ($227 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Ontario to Europe

Cheapest flights from Ontario to Europe
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 enero 15, 2026.

This oojo deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” 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.
mar. 4/142:08 pm
ONT
-
MAD
2 stops18h 22m
British Airways
mar. 4/2110:25 am
MAD
-
ONT
1 stop19h 02m
British Airways
Deal found 1/13$414
This oojo deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” 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.
lun. 2/24:45 pm
ONT
-
MAD
2 stops33h 20m
British Airways
mié. 2/1112:50 pm
MAD
-
ONT
2 stops42h 17m
British Airways
Deal found 1/13$419
This oojo deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” 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.
dom. 2/156:00 am
ONT
-
MAD
1 stop18h 25m
British Airways
mar. 3/312:40 pm
MAD
-
ONT
1 stop19h 09m
British Airways
Deal found 1/13$424
This oojo deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/24:45 pm
ONT
-
MAD
2 stops16h 45m
British Airways
jue. 2/1212:40 pm
MAD
-
ONT
1 stop20h 19m
British Airways
Deal found 1/12$426
This oojo deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” 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.
mié. 2/43:09 pm
ONT
-
ATH
2 stops23h 56m
British Airways
mié. 2/118:20 pm
ATH
-
ONT
2 stops35h 47m
British Airways
Deal found 1/13$428
This oojo deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” 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.
mié. 1/2110:58 am
ONT
-
MAD
1 stop13h 27m
British Airways
mié. 1/2812:55 am
MAD
-
ONT
1 stop25h 27m
British Airways
Deal found 1/13$429
This KLM deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” 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.
lun. 1/2610:30 pm
ONT
-
MAD
2 stops24h 30m
KLM
mar. 2/1011:15 am
MAD
-
ONT
1 stop18h 50m
KLM
Deal found 1/14$430
This oojo deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/252:39 pm
ONT
-
MAD
2 stops18h 51m
British Airways
lun. 3/28:50 pm
MAD
-
ONT
2 stops28h 32m
British Airways
Deal found 1/15$431
This KLM deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” 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.
dom. 1/2510:30 pm
ONT
-
MAD
2 stops24h 30m
KLM
mar. 2/1011:15 am
MAD
-
ONT
1 stop18h 50m
KLM
Deal found 1/13$432
This oojo deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/46:00 am
ONT
-
MAD
1 stop18h 25m
British Airways
mié. 2/2512:40 pm
MAD
-
ONT
1 stop19h 09m
British Airways
Deal found 1/12$436
This KLM deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/1412:39 pm
ONT
-
MAD
1 stop14h 36m
KLM
mar. 4/2112:40 pm
MAD
-
ONT
1 stop17h 18m
KLM
Deal found 1/15$439
This Cheapflightsfares deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” 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.
mar. 3/103:19 pm
ONT
-
MAD
2 stops19h 11m
British Airways
mar. 3/1711:25 am
MAD
-
ONT
1 stop19h 24m
British Airways
Deal found 1/14$441

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 enero 15, 2026.
Use the filters below to find and compare flights from Ontario to Europe that are best for you.

Fly from

Ontario

Fly to

Europe

Route

Depart

Return

Price

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

lun. 1/26

10:30 pm-8:00 am

2 stops24h 30m

Madrid Barajas

mar. 2/10

11:15 am-9:05 pm

1 stop18h 50m

$430

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mar. 4/14

12:39 pm-12:15 pm

1 stop14h 36m

Madrid Barajas

jue. 4/30

12:40 pm-8:58 pm

1 stop17h 18m

$439

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mar. 4/14

12:39 pm-12:15 pm

1 stop14h 36m

Madrid Barajas

mar. 4/21

12:40 pm-8:58 pm

1 stop17h 18m

$439

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mar. 2/10

6:00 am-6:15 am

1 stop15h 15m

Madrid Barajas

mié. 2/18

4:25 pm-10:06 am

2 stops26h 41m

$444

OntarioRome

ONT - FCO

ONTFCO

Ontario

dom. 1/25

10:30 pm-9:45 am

2 stops26h 15m

Rome Fiumicino

mar. 2/10

12:40 pm-11:31 am

1 stop31h 51m

$448

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

mar. 3/24

5:02 pm-9:45 pm

2 stops21h 43m

Lisbon Humberto Delgado

lun. 4/13

6:45 pm-4:22 pm

2 stops53h 37m

$456

OntarioRome

ONT - FCO

ONTFCO

Ontario

mié. 4/15

6:00 am-12:05 pm

1 stop21h 05m

Rome Fiumicino

mié. 4/22

1:10 pm-10:35 pm

1 stop18h 25m

$457

OntarioRome

ONT - FCO

ONTFCO

Ontario

mar. 1/27

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

jue. 2/12

12:40 pm-12:02 pm

1 stop32h 22m

$468

OntarioRome

ONT - FCO

ONTFCO

Ontario

lun. 1/26

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

jue. 2/5

12:40 pm-11:31 am

1 stop31h 51m

$468

OntarioRome

ONT - FCO

ONTFCO

Ontario

mar. 1/27

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

vie. 2/6

12:40 pm-11:31 am

1 stop31h 51m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 60 results
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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.
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

What is the cheapest month to book a flight from Ontario to Europe?

Currently, February is the cheapest month in which you can book a flight from Ontario to Europe (average of $337). Flying from Ontario to Europe in June is currently the most expensive (average of $582). 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 enero 15, 2026.
See what other customers who have flown with Delta, United Airlines, and American 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.
Delta
7.9
Good
8,049 reviews

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
7.9
Good
8,049 reviews
Delta
7.9
Good
8,049 reviews

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
9,164 reviews
Delta
7.9
Good
8,049 reviews

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
11,132 reviews
Delta
7.9
Good
8,049 reviews

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Iberia
7.0
Good
3,087 reviews
Delta
7.9
Good
8,049 reviews

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.7
Okay
7,676 reviews
Delta
7.9
Good
8,049 reviews

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What airport do you fly from for flights from Ontario to Europe?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Europe.

  • How long is the flight from Ontario to Europe?

    For as low as $439, KLM can have you in Europe from Ontario in 14h 36m. Airlines will cover a distance of 5790 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Ontario to Europe?

    The most popular route from Ontario to Europe is Ontario - London Heathrow. You may also consider Ontario - Paris Charles de Gaulle or Ontario - Rome Fiumicino.

  • Can I find deals for flights from Ontario to Europe that include hotel bookings?

    Yes. In addition to deals on Ontario to Europe flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Europe?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Europe.

  • Can I find deals for business class flights from Ontario to Europe?

    Yes. Cheapflights offers flight deals from Ontario to Europe by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Europe?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Europe (average of $337). Flying from Ontario to Europe in June is currently the most expensive (average of $582). 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.

See more FAQs

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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.
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Top 7 airlines flying from Ontario to Europe

Discover the top 7 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 enero 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$444Average$929FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$469Average$653FlexibilityNo cancel feeOn-time72%
IberiaCheapest$497Average$829FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$517Average$933FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$568Average$862FlexibilityNo cancel feeOn-time69%
KLMCheapest$580Average$808FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$595Average$1,052FlexibilityNo cancel feeOn-time71%

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