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$287+ 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CPH
aug 20 — aug 271
Jo 8/20
Jo 8/27
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 iulie 21, 2026.

This Booking.com deal was found by Cheapflights users on 7/16. 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.
Lu 8/1710:54 am
ONT
-
FRA
1 stop14h 56m
Multiple Airlines
Lu 8/3111:30 am
FRA
-
ONT
1 stop14h 40m
Multiple Airlines
Deal found 7/16$694
This KLM deal was found by Cheapflights users on 7/16. 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.
Lu 11/912:00 pm
ONT
-
MXP
1 stop14h 10m
KLM
Ma 11/171:05 pm
MXP
-
ONT
1 stop18h 09m
KLM
Deal found 7/16$711
This Air France deal was found by Cheapflights users on 7/20. 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.
Ma 11/177:00 am
ONT
-
MXP
2 stops22h 55m
Multiple Airlines
Ma 11/241:05 pm
MXP
-
ONT
1 stop18h 09m
Multiple Airlines
Deal found 7/20$715
This Delta deal was found by Cheapflights users on 7/16. 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.
Ma 9/2211:54 am
ONT
-
BCN
1 stop14h 16m
Delta
Jo 10/111:00 am
BCN
-
ONT
1 stop20h 26m
Delta
Deal found 7/16$715
This Delta deal was found by Cheapflights users on 7/16. 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.
Sâ 9/1912:17 pm
ONT
-
BCN
2 stops35h 18m
Delta
Vi 10/21:20 pm
BCN
-
ONT
1 stop18h 20m
Delta
Deal found 7/16$719
This Expedia deal was found by Cheapflights users on 7/16. 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.
Lu 11/92:59 pm
ONT
-
MXP
2 stops19h 51m
Multiple Airlines
Ma 11/176:20 am
MXP
-
ONT
2 stops26h 37m
Multiple Airlines
Deal found 7/16$722
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Lu 11/26:46 am
ONT
-
MXP
1 stop21h 29m
United Airlines
Vi 11/1312:55 pm
MXP
-
ONT
2 stops38h 34m
United Airlines
Deal found 7/16$723
This Delta deal was found by Cheapflights users on 7/16. 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.
Du 9/2010:00 pm
ONT
-
BCN
2 stops26h 00m
Delta
Vi 10/29:20 am
BCN
-
ONT
2 stops22h 06m
Delta
Deal found 7/16$723
This Delta deal was found by Cheapflights users on 7/16. 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.
Sâ 9/1912:17 pm
ONT
-
BCN
2 stops35h 18m
Delta
Lu 10/511:10 am
BCN
-
ONT
2 stops39h 02m
Delta
Deal found 7/16$724
This Delta deal was found by Cheapflights users on 7/16. 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.
Vi 9/1810:00 pm
ONT
-
BCN
2 stops49h 35m
Delta
Jo 10/111:00 am
BCN
-
ONT
1 stop20h 26m
Delta
Deal found 7/16$730
This United Airlines deal was found by Cheapflights users on 7/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Lu 11/96:46 am
ONT
-
FRA
2 stops42h 19m
United Airlines
Jo 11/1210:05 am
FRA
-
ONT
2 stops43h 51m
United Airlines
Deal found 7/15$733
This Cheapflightsfares deal was found by Cheapflights users on 7/18. 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.
Mi 9/2310:25 am
ONT
-
MAD
1 stop13h 40m
British Airways
Ma 10/612:40 pm
MAD
-
ONT
1 stop16h 14m
British Airways
Deal found 7/18$733

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 iulie 21, 2026.

Round-trip from

$694
(Booking.com)

One-way from

$287
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$1,294
From Ontario to Europe
Search Deals
One-way flight from Ontario to Europe
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($294 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 iulie 21, 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

Price

Cheapest round-trip

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Ma 1/12

5:00 am-7:30 am

2 stops17h 30m

Milan Malpensa

Jo 3/11

11:20 am-9:21 pm

2 stops19h 01m

$718

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Lu 8/3

6:10 am-1:20 pm

1 stop22h 10m

Milan Malpensa

Mi 8/19

12:20 pm-10:59 pm

2 stops43h 39m

$749

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Mi 8/12

7:00 am-1:20 pm

1 stop21h 20m

Milan Malpensa

Mi 8/19

12:20 pm-10:35 pm

2 stops43h 15m

$749

OntarioRome

ONT - FCO

ONTFCO

Ontario

Ma 1/12

7:00 am-8:15 am

1 stop16h 15m

Rome Fiumicino

Jo 1/28

1:30 pm-10:14 pm

1 stop17h 44m

$755

OntarioRome

ONT - FCO

ONTFCO

Ontario

Du 11/15

1:13 pm-11:55 am

1 stop13h 42m

Rome Fiumicino

Jo 11/26

9:55 am-8:06 pm

2 stops19h 11m

$759

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Du 8/9

7:05 am-9:25 am

1 stop17h 20m

Milan Malpensa

Ma 8/25

11:40 am-7:53 pm

1 stop17h 13m

$769

OntarioRome

ONT - FCO

ONTFCO

Ontario

Ma 8/11

1:56 pm-1:40 pm

1 stop14h 44m

Rome Fiumicino

Vi 8/21

6:50 am-8:01 pm

3 stops22h 11m

$775

OntarioRome

ONT - FCO

ONTFCO

Ontario

Ma 11/3

7:05 am-8:15 am

1 stop16h 10m

Rome Fiumicino

Ma 11/17

1:30 pm-10:14 pm

1 stop17h 44m

$810

OntarioRome

ONT - FCO

ONTFCO

Ontario

Du 9/27

1:24 pm-12:20 pm

1 stop13h 56m

Rome Fiumicino

Jo 11/12

1:55 pm-8:56 pm

1 stop16h 01m

$817

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Du 8/9

7:05 am-9:25 am

1 stop17h 20m

Milan Malpensa

Du 8/23

11:40 am-9:52 pm

1 stop19h 12m

$819

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 60 resultsSorted by cheapest first
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2
3
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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, January is the cheapest month in which you can book a flight from Ontario to Europe (average of $688). Flying from Ontario to Europe in June is currently the most expensive (average of $1,385). 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 iulie 21, 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.
Delta
7.8
Good
8,476 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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
7.8
Good
8,476 reviews
Delta
7.8
Good
8,476 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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
10,015 reviews
Delta
7.8
Good
8,476 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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
7.1
Good
11,831 reviews
Delta
7.8
Good
8,476 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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
3,260 reviews
Delta
7.8
Good
8,476 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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
8,125 reviews
Delta
7.8
Good
8,476 reviews

Overall

7.8

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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 $755, United Airlines can have you in Europe from Ontario in 16h 15m. Airlines will cover a distance of 6303 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $483. United Airlines flights start at $633 while deals on Iberia start at $733 one-way.

  • 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, January is the cheapest month in which you can book a flight from Ontario to Europe (average of $688). Flying from Ontario to Europe in June is currently the most expensive (average of $1,385). 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 8 airlines flying from Ontario to Europe

Discover the top 8 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 iulie 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$469Average$646FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$504Average$834FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$515Average$956FlexibilityNo cancel feeOn-time69%
IberiaCheapest$522Average$687FlexibilityNo cancel feeOn-time77%
DeltaCheapest$535Average$1,027FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$620Average$650FlexibilityNo cancel feeOn-time71%
KLMCheapest$657Average$1,321FlexibilityNo cancel feeOn-time75%
Alaska AirlinesCheapest$931Average$1,592FlexibilityNo cancel feeOn-time75%

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