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$247+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CPH
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap 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 January 26, 2026.

This United Airlines deal was found by Cheapflights users on 1/26. 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 8/115:00 am
ONT
-
MXP
3 stops44h 20m
United Airlines
Sun 8/2312:20 pm
MXP
-
ONT
2 stops37h 58m
United Airlines
Deal found 1/26$475
This United Airlines deal was found by Cheapflights users on 1/26. 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 3/46:09 am
ONT
-
MXP
2 stops25h 31m
United Airlines
Wed 3/1812:05 pm
MXP
-
ONT
2 stops42h 13m
United Airlines
Deal found 1/26$479
This United Airlines deal was found by Cheapflights users on 1/26. 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 8/147:00 am
ONT
-
MXP
2 stops42h 20m
United Airlines
Sun 8/2312:20 pm
MXP
-
ONT
2 stops38h 27m
United Airlines
Deal found 1/26$480
This Delta deal was found by Cheapflights users on 1/24. 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 2/1610:20 pm
ONT
-
MXP
1 stop25h 45m
Delta
Wed 3/411:05 am
MXP
-
ONT
1 stop19h 00m
Delta
Deal found 1/24$485
This Gotogate deal was found by Cheapflights users on 1/25. 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 2/245:00 am
ONT
-
MXP
2 stops19h 55m
Multiple Airlines
Tue 3/36:55 am
MXP
-
ONT
2 stops24h 05m
Multiple Airlines
Deal found 1/25$488
This oojo deal was found by Cheapflights users on 1/25. 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 2/225:02 pm
ONT
-
ATH
2 stops34h 18m
British Airways
Sat 2/288:05 pm
ATH
-
ONT
2 stops36h 02m
British Airways
Deal found 1/25$491
This oojo deal was found by Cheapflights users on 1/24. 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 2/242:39 pm
ONT
-
MXP
2 stops20h 06m
British Airways
Thu 3/511:30 am
MXP
-
ONT
2 stops19h 59m
British Airways
Deal found 1/24$492
This Delta deal was found by Cheapflights users on 1/25. 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 3/25:00 pm
ONT
-
MXP
2 stops36h 55m
Delta
Wed 3/1110:05 am
MXP
-
ONT
1 stop18h 55m
Delta
Deal found 1/25$496
This United Airlines deal was found by Cheapflights users on 1/25. 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 3/241:40 pm
ONT
-
FCO
2 stops25h 20m
United Airlines
Tue 3/3111:30 am
FCO
-
ONT
2 stops43h 56m
United Airlines
Deal found 1/25$496
This United Airlines deal was found by Cheapflights users on 1/24. 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 2/236:00 am
ONT
-
LIS
2 stops18h 10m
United Airlines
Mon 3/26:10 am
LIS
-
ONT
2 stops19h 31m
United Airlines
Deal found 1/24$497
This Delta deal was found by Cheapflights users on 1/25. 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 2/1410:20 pm
ONT
-
MXP
1 stop25h 45m
Delta
Tue 3/311:05 am
MXP
-
ONT
1 stop19h 00m
Delta
Deal found 1/25$497
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/245:00 am
ONT
-
MXP
2 stops19h 55m
United Airlines
Thu 3/59:45 am
MXP
-
ONT
2 stops21h 33m
United Airlines
Deal found 1/26$499

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 January 26, 2026.

Round-trip from

$475
(United Airlines)

One-way from

$247
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$748
From Ontario to Europe
Search Deals
One-way flight from Ontario to Europe
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($228 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 26, 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

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 3/4

6:09 am-4:40 pm

2 stops25h 31m

Milan Malpensa

Wed 3/18

12:05 pm-10:18 pm

2 stops42h 13m

$479

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 3/4

1:15 pm-6:50 pm

2 stops20h 35m

Milan Malpensa

Thu 3/12

10:05 am-9:00 pm

1 stop18h 55m

$496

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 3/4

1:15 pm-6:50 pm

2 stops20h 35m

Milan Malpensa

Tue 3/10

10:05 am-9:00 pm

1 stop18h 55m

$496

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Mon 3/2

9:06 pm-7:30 am

2 stops25h 24m

Milan Malpensa

Tue 3/10

9:45 am-10:18 pm

2 stops20h 33m

$496

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Sun 3/1

10:20 pm-9:45 am

2 stops26h 25m

Milan Malpensa

Fri 3/13

10:05 am-9:00 pm

1 stop18h 55m

$496

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 2/25

5:00 am-7:30 am

2 stops17h 30m

Milan Malpensa

Wed 3/4

9:45 am-8:50 pm

2 stops20h 05m

$496

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Sat 2/28

10:20 pm-11:40 am

2 stops28h 20m

Milan Malpensa

Fri 3/13

10:05 am-9:00 pm

1 stop18h 55m

$496

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Sun 3/1

10:20 pm-9:45 am

2 stops26h 25m

Milan Malpensa

Wed 3/11

10:05 am-9:00 pm

1 stop18h 55m

$496

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 3/4

1:15 pm-6:50 pm

2 stops20h 35m

Milan Malpensa

Wed 3/11

10:05 am-9:00 pm

1 stop18h 55m

$496

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Tue 3/3

1:15 pm-9:45 am

2 stops35h 30m

Milan Malpensa

Wed 3/11

10:05 am-9:00 pm

1 stop18h 55m

$496

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 60 results
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6

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 $339). 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 January 26, 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
8,111 reviews

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

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
8,111 reviews
Delta
7.9
Good
8,111 reviews

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

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
9,199 reviews
Delta
7.9
Good
8,111 reviews

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

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
11,189 reviews
Delta
7.9
Good
8,111 reviews

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

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
3,098 reviews
Delta
7.9
Good
8,111 reviews

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

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
7,700 reviews
Delta
7.9
Good
8,111 reviews

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

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 $631, United Airlines can have you in Europe from Ontario in 19h. Airlines will cover a distance of 5407 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 - Rome Fiumicino or Ontario - Paris Charles de Gaulle.

  • 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 $339). 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 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$439Average$1,051FlexibilityNo cancel feeOn-time71%
DeltaCheapest$444Average$888FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$497Average$824FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$504Average$967FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$515Average$894FlexibilityNo cancel feeOn-time69%
KLMCheapest$580Average$808FlexibilityNo cancel feeOn-time75%

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