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$322+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CPH
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$459
(United Airlines)

One-way from

$322
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$1,472
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. 14% potential increase in price ($187 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This KLM deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 11/127:00 amONT - FCO
1 stop18h 30mKLM
Wed 11/1910:15 amFCO - ONT
1 stop18h 27mKLM
Deal found 6/11$447
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 12/26:42 pmONT - DUB
3 stops28h 18mUnited Airlines
Wed 12/109:00 amDUB - ONT
2 stops45h 26mUnited Airlines
Deal found 6/10$459
This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:40 amONT - DUB
2 stops17h 30mAir Canada
Wed 12/109:00 amDUB - ONT
2 stops35h 33mAir Canada
Deal found 6/10$462
This Finnair deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/811:59 pmONT - FCO
1 stop25h 46mMultiple Airlines
Wed 11/191:10 pmFCO - ONT
2 stops19h 35mMultiple Airlines
Deal found 6/11$465
This Booking.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
Tue 10/145:05 amONT - BCN
2 stops19h 15mAir Canada
Fri 10/2412:10 pmBCN - ONT
2 stops17h 14mAir Canada
Deal found 6/11$481
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 10/51:53 pmONT - BCN
1 stop15h 07mUnited Airlines
Tue 10/143:15 pmBCN - ONT
1 stop16h 15mUnited Airlines
Deal found 6/11$483
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 10/296:38 pmONT - MAD
2 stops28h 27mUnited Airlines
Wed 11/191:20 pmMAD - ONT
2 stops32h 13mUnited Airlines
Deal found 6/11$487
This Travelocity deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/811:59 pmONT - FCO
2 stops32h 46mBritish Airways
Wed 11/197:50 amFCO - ONT
2 stops22h 51mBritish Airways
Deal found 6/11$493
This flugladen.de deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
Wed 12/108:48 amONT - FCO
1 stop16h 57mIberia
Wed 12/2411:00 amFCO - ONT
1 stop21h 48mIberia
Deal found 6/10$498
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 12/97:00 amONT - FCO
1 stop15h 45mUnited Airlines
Fri 1/99:45 amFCO - ONT
2 stops23h 40mUnited Airlines
Deal found 6/11$508
This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/31:00 pmONT - MAD
2 stops34h 05mAir Canada
Wed 11/191:20 pmMAD - ONT
2 stops32h 13mAir Canada
Deal found 6/10$515
This Iberia deal was found by Cheapflights users on 6/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/72:30 pmONT - MAD
1 stop14h 50mIberia
Wed 9/1712:40 pmMAD - ONT
1 stop15h 20mIberia
Deal found 6/12$522

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 June 12, 2025.
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

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 12/2

6:42 pm-7:00 am

3 stops28h 18m

Dublin

Wed 12/10

9:00 am-10:26 pm

2 stops45h 26m

$459

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 12/2

5:40 am-7:10 am

2 stops17h 30m

Dublin

Wed 12/10

9:00 am-12:33 pm

2 stops35h 33m

$462

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 10/14

5:05 am-9:20 am

2 stops19h 15m

Barcelona-El Prat

Fri 10/24

12:10 pm-8:24 pm

2 stops17h 14m

$481

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 10/5

1:53 pm-2:00 pm

1 stop15h 07m

Barcelona-El Prat

Tue 10/14

3:15 pm-10:30 pm

1 stop16h 15m

$483

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 10/29

6:38 pm-7:05 am

2 stops28h 27m

Madrid Barajas

Wed 11/19

1:20 pm-12:33 pm

2 stops32h 13m

$487

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 11/3

1:00 pm-8:05 am

2 stops34h 05m

Madrid Barajas

Wed 11/19

1:20 pm-12:33 pm

2 stops32h 13m

$515

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 9/7

2:30 pm-2:20 pm

1 stop14h 50m

Madrid Barajas

Wed 9/17

12:40 pm-7:00 pm

1 stop15h 20m

$522

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 9/7

7:05 am-9:35 am

1 stop17h 30m

Madrid Barajas

Tue 9/16

10:05 am-10:41 pm

1 stop21h 36m

$525

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 8/4

10:05 pm-7:50 am

2 stops24h 45m

Madrid Barajas

Wed 8/20

10:05 am-10:20 pm

1 stop21h 15m

$526

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 8/2

1:19 pm-9:15 am

2 stops34h 56m

Rome Fiumicino

Fri 8/22

11:30 am-10:30 pm

2 stops44h 00m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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, November is the cheapest month in which you can book a flight from Ontario to Europe (average of $523). Flying from Ontario to Europe in June is currently the most expensive (average of $911). 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.

What is the cheapest time of day to fly from ONT to EU?

Find hourly flight availability from Ontario to Europe. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Europe as you normally would.

Rainfall in Europe by month

Plan your trip to Europe by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Europe ranges from 0.4 - 3.9 inches per month. December is typically the wettest month, when rainfall can reach 3.9 in. July is typically the driest time to visit Europe when rainfall is around 0.4 in.

Temperature in Europe by month

Plan your trip to Europe by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Europe, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 June 12, 2025.
China Airlines
8.3
Very good
738 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
China Airlines
8.3
Very good
738 reviews
China Airlines
8.3
Very good
738 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Delta
8.0
Very good
7,950 reviews
China Airlines
8.3
Very good
738 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Alaska Airlines
8.0
Very good
10,000 reviews
China Airlines
8.3
Very good
738 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
KLM
7.8
Good
1,358 reviews
China Airlines
8.3
Very good
738 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
LOT
7.6
Good
1,077 reviews
China Airlines
8.3
Very good
738 reviews

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

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.

  • What are the cheapest airlines to fly from Ontario to Europe one-way?

    To fly one-way, consider booking your trip with JetBlue, which is currently one of the cheapest options available, starting at $385. Air Canada flights start at $395 while deals on KLM start at $399 one-way.

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

    The most popular route from Ontario to Europe is Ontario - Paris Charles de Gaulle. You may also consider Ontario - London Heathrow 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, November is the cheapest month in which you can book a flight from Ontario to Europe (average of $523). Flying from Ontario to Europe in June is currently the most expensive (average of $911). 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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$454Average$765FlexibilityNo cancel feeOn-time72%
IberiaCheapest$489Average$896FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$492Average$884FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$504Average$939FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$544Average$819FlexibilityNo cancel feeOn-time70%
DeltaCheapest$566Average$933FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$608Average$915FlexibilityNo cancel feeOn-time75%

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