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$300+ 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CPH
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Round-trip from

$506
(United)

One-way from

$300
(Air Canada)

Popular in

June

Cheapest in

February

Average price

$901
From Ontario to Europe
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One-way flight from Ontario to Europe
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($262 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This United deal was found by Cheapflights users on 2/20. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/196:00 amONT - MXP
2 stops19h 20mUnited Airlines
Thu 4/312:15 pmMXP - ONT
2 stops41h 27mUnited Airlines
Deal found 2/20$506
This United deal was found by Cheapflights users on 2/20. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/316:00 amONT - FCO
1 stop22h 20mUnited Airlines
Tue 4/812:25 pmFCO - ONT
2 stops35h 52mUnited Airlines
Deal found 2/20$525
This KLM deal was found by Cheapflights users on 2/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/117:00 amONT - MXP
1 stop17h 05mKLM
Tue 3/1810:05 amMXP - ONT
1 stop20h 38mKLM
Deal found 2/20$529
This Air Canada deal was found by Cheapflights users on 2/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/45:05 amONT - FCO
2 stops19h 55mMultiple Airlines
Tue 3/1111:15 amFCO - ONT
2 stops33h 29mMultiple Airlines
Deal found 2/18$531
This Delta deal was found by Cheapflights users on 2/19. 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 3/185:30 pmONT - ATH
2 stops31h 05mDelta
Tue 4/110:30 amATH - ONT
2 stops23h 26mDelta
Deal found 2/19$537
This KLM deal was found by Cheapflights users on 2/19. 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 2/257:05 amONT - FCO
1 stop18h 25mKLM
Fri 3/712:45 pmFCO - ONT
1 stop19h 07mKLM
Deal found 2/19$541
This Travelocity deal was found by Cheapflights users on 2/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/46:05 amONT - FCO
2 stops21h 15mBritish Airways
Tue 3/1111:10 amFCO - ONT
1 stop19h 17mBritish Airways
Deal found 2/20$544
This Delta deal was found by Cheapflights users on 2/19. 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.
Wed 3/1912:46 pmONT - MXP
2 stops18h 29mDelta
Thu 4/311:40 amMXP - ONT
1 stop19h 56mDelta
Deal found 2/19$545
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/117:00 amONT - FCO
1 stop15h 55mDelta
Tue 3/188:20 amFCO - ONT
2 stops22h 23mDelta
Deal found 2/20$546
This Finnair deal was found by Cheapflights users on 2/19. 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.
Sun 3/2310:57 amONT - MAD
1 stop19h 23mMultiple Airlines
Fri 4/44:00 pmMAD - ONT
1 stop16h 50mMultiple Airlines
Deal found 2/19$548
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:00 amONT - MAD
2 stops16h 05mUnited Airlines
Tue 12/911:15 amMAD - ONT
2 stops20h 11mUnited Airlines
Deal found 2/20$564
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2510:59 pmONT - MAD
1 stop25h 01mDelta
Thu 12/1111:00 amMAD - ONT
1 stop20h 29mDelta
Deal found 2/20$565

Find flights from Ontario to Europe within your budget

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 February 20, 2025.

Fly from

Ontario

Fly to

Europe

Route

Depart

Return

Price

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 3/19

6:00 am-9:20 am

2 stops19h 20m

Milan Malpensa

Thu 4/3

12:15 pm-8:42 pm

2 stops41h 27m

$506

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 3/31

6:00 am-1:20 pm

1 stop22h 20m

Rome Fiumicino

Tue 4/8

12:25 pm-3:17 pm

2 stops35h 52m

$525

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Tue 3/11

7:00 am-8:05 am

1 stop17h 05m

Milan Malpensa

Tue 3/18

10:05 am-10:43 pm

1 stop20h 38m

$529

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 3/4

5:05 am-10:00 am

2 stops19h 55m

Rome Fiumicino

Tue 3/11

11:15 am-12:44 pm

2 stops33h 29m

$531

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 3/18

5:30 pm-9:35 am

2 stops31h 05m

Athens Eleftherios V.

Tue 4/1

10:30 am-10:43 pm

1 stop22h 13m

$537

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 3/4

6:05 am-12:20 pm

2 stops21h 15m

Rome Fiumicino

Tue 3/11

11:10 am-10:27 pm

1 stop19h 17m

$544

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 3/19

12:46 pm-3:15 pm

2 stops18h 29m

Milan Malpensa

Thu 4/3

11:40 am-10:36 pm

1 stop19h 56m

$545

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 3/11

7:00 am-6:55 am

1 stop15h 55m

Rome Fiumicino

Tue 3/18

8:20 am-10:43 pm

2 stops22h 23m

$546

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 3/23

10:57 am-2:20 pm

1 stop19h 23m

Madrid Barajas

Fri 4/4

4:00 pm-11:50 pm

1 stop16h 50m

$548

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 4/1

2:54 pm-10:10 pm

2 stops22h 16m

Madrid Barajas

Tue 4/15

12:40 pm-11:50 pm

1 stop20h 10m

$585

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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.

Travel insights for flights from Ontario to Europe

Get recent, data-driven insights about flights from Ontario to Europe including ideal travel times, pricing trends, and more.

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 $989). 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 February 20, 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 February 20, 2025.
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

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
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

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.

Alaska Airlines
8.0
Very good
9,692 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

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.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

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.

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

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.

Qatar Airways
7.4
Good
3,609 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

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.

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

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $300. United Airlines flights start at $304 while deals on Iberia start at $316 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, 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 $989). 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.

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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$454Average$889FlexibilityNo cancel feeOn-time72%
KLMCheapest$481Average$919FlexibilityNo cancel feeOn-time75%
DeltaCheapest$481Average$905FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$489Average$859FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$492Average$902FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$504Average$961FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$551Average$884FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$690Average$1,139FlexibilityNo cancel feeOn-time67%
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