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Ontario

$374+ Cheap flights from Europe to Ontario (ONT)

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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — ONT
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Europe to Ontario

Keep the following information in mind while searching for Europe to Ontario flight deals. Data was last updated septiembre 11, 2025.

Round-trip from

$482
(Iberia)

One-way from

$374
(Trip.com)

Popular in

August

Cheapest in

February

Average price

$702
From Europe to Ontario
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One-way flight from Europe to Ontario
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Highest demand for flights based on searches. 14% potential increase in price ($126 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Europe to Ontario

Cheapest flights from Europe to Ontario
Explore the most affordable flight options available from Europe to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This TravelUp deal was found by Cheapflights users on 9/9. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/77:15 pmLHR - ONT
2 stops35h 26mVirgin Atlantic
mar. 10/147:05 amONT - LHR
1 stop15h 40mVirgin Atlantic
Deal found 9/9$492
This TravelUp deal was found by Cheapflights users on 9/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/37:50 pmLHR - ONT
2 stops57h 30mVirgin Atlantic
lun. 11/2411:45 amONT - LHR
1 stop13h 15mVirgin Atlantic
Deal found 9/10$509
This Netflights deal was found by Cheapflights users on 9/10. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/278:20 amLHR - ONT
1 stop22h 13mBritish Airways
lun. 10/62:51 pmONT - LHR
1 stop15h 34mBritish Airways
Deal found 9/10$510
This TravelUp deal was found by Cheapflights users on 9/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/38:20 amLHR - ONT
1 stop18h 01mBritish Airways
lun. 11/243:19 pmONT - LHR
1 stop12h 56mBritish Airways
Deal found 9/10$512
This British Airways deal was found by Cheapflights users on 9/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/57:35 amLHR - ONT
2 stops22h 54mBritish Airways
sáb. 11/224:47 pmONT - LHR
1 stop12h 28mBritish Airways
Deal found 9/9$522
This Netflights deal was found by Cheapflights users on 9/10. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/2110:55 amLHR - ONT
1 stop20h 47mVirgin Atlantic
lun. 10/61:15 pmONT - LHR
1 stop12h 35mVirgin Atlantic
Deal found 9/10$529
This British Airways deal was found by Cheapflights users on 9/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/2312:00 pmLHR - ONT
1 stop14h 54mBritish Airways
mar. 9/3010:53 amONT - LHR
1 stop15h 57mBritish Airways
Deal found 9/9$530
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/1911:15 amLHR - ONT
1 stop15h 01mAmerican Airlines
mar. 10/74:49 pmONT - LHR
1 stop13h 51mAmerican Airlines
Deal found 9/10$532
This TravelUp deal was found by Cheapflights users on 9/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/171:05 pmLHR - ONT
1 stop17h 18mKLM
lun. 9/221:15 pmONT - LHR
1 stop12h 35mKLM
Deal found 9/10$534
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/189:55 amLHR - ONT
2 stops20h 28mDelta
mié. 10/16:00 amONT - LHR
1 stop19h 50mDelta
Deal found 9/10$537
This Justfly.com deal was found by Cheapflights users on 9/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/63:10 pmLHR - ONT
1 stop15h 08mBritish Airways
lun. 10/1312:48 pmONT - LHR
1 stop14h 02mBritish Airways
Deal found 9/11$539
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/238:15 amCDG - ONT
2 stops19h 47mAmerican Airlines
vie. 10/3110:57 amONT - CDG
2 stops15h 43mAmerican Airlines
Deal found 9/11$554

Cheapflights Fare Finder

 
Customize your flight search to find flights from Europe to Ontario 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 septiembre 11, 2025.
Use the filters below to find and compare flights from Europe to Ontario that are best for you.

Fly from

Europe

Fly to

Ontario

Route

Depart

Return

Price

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

mié. 2/11

10:40 am-10:02 pm

1 stop20h 22m

Ontario

lun. 2/16

6:47 am-8:50 am

1 stop17h 03m

$482

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

sáb. 2/28

10:40 am-9:40 pm

2 stops20h 00m

Ontario

mié. 3/11

6:45 am-7:50 am

2 stops17h 05m

$501

LondonOntario

LHR - ONT

LHRONT

London Heathrow

mié. 11/5

7:35 am-10:29 pm

2 stops22h 54m

Ontario

sáb. 11/22

4:47 pm-1:15 pm

1 stop12h 28m

$522

LondonOntario

LHR - ONT

LHRONT

London Heathrow

mié. 11/5

10:05 am-6:21 pm

1 stop16h 16m

Ontario

sáb. 11/22

4:47 pm-1:15 pm

1 stop12h 28m

$530

LondonOntario

LHR - ONT

LHRONT

London Heathrow

mar. 9/23

12:00 pm-6:54 pm

1 stop14h 54m

Ontario

mar. 9/30

10:53 am-10:50 am

1 stop15h 57m

$530

LondonOntario

LHR - ONT

LHRONT

London Heathrow

dom. 2/8

10:35 am-5:53 pm

1 stop15h 18m

Ontario

sáb. 2/14

11:05 am-8:15 am

1 stop13h 10m

$531

LondonOntario

LHR - ONT

LHRONT

London Heathrow

lun. 2/9

3:00 pm-10:02 pm

1 stop15h 02m

Ontario

sáb. 2/14

3:05 pm-12:15 pm

1 stop13h 10m

$531

LondonOntario

LHR - ONT

LHRONT

London Heathrow

vie. 9/26

12:00 pm-6:54 pm

1 stop14h 54m

Ontario

mié. 10/8

2:51 pm-2:25 pm

1 stop15h 34m

$531

LondonOntario

LHR - ONT

LHRONT

London Heathrow

lun. 9/22

12:00 pm-6:54 pm

1 stop14h 54m

Ontario

lun. 9/29

4:45 pm-2:40 pm

1 stop13h 55m

$532

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

vie. 2/27

10:40 am-9:57 pm

1 stop20h 17m

Ontario

mar. 3/3

6:47 am-8:50 am

1 stop17h 03m

$534

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 60 results
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Best time to book a flight from Europe to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Europe 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 Europe to Ontario

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

Currently, August is the cheapest month in which you can book a flight from Europe to Ontario (average of $246). Flying from Europe to Ontario in March is currently the most expensive (average of $328). 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 EU to ONT?

Find hourly flight availability from Europe to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

When flying from Europe to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated septiembre 11, 2025.
See what other customers who have flown with KLM, United Airlines, and British Airways from Europe to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,385 reviews

Entertainment

7.2

Boarding

7.8

Comfort

7.7

Crew

8.4

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
KLM
7.8
Good
1,385 reviews
KLM
7.8
Good
1,385 reviews

Entertainment

7.2

Boarding

7.8

Comfort

7.7

Crew

8.4

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
United Airlines
7.4
Good
8,937 reviews
KLM
7.8
Good
1,385 reviews

Entertainment

7.2

Boarding

7.8

Comfort

7.7

Crew

8.4

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
British Airways
6.7
Okay
7,361 reviews
KLM
7.8
Good
1,385 reviews

Entertainment

7.2

Boarding

7.8

Comfort

7.7

Crew

8.4

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Related info for your journey

Find useful and relevant information for your journey from Europe to Ontario. 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 into for flights to Ontario from Europe?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ontario from Europe.

  • How long is the flight from Europe to Ontario?

    Iberia, British Airways, and United Airlines can get you from Europe to Ontario in just under 20h 22m. Your travel time can differ by up to 2h 32m. Europe and Ontario are separated by a distance of 5971 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $405. British Airways flights start at $452 while deals on Iberia start at $481 one-way.

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

    Most travelers choose Paris Charles de Gaulle - Ontario, Frankfurt am Main - Ontario or Madrid Barajas - Ontario when deciding on the best route from Europe to Ontario.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Europe to Ontario 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 Europe to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Europe to Ontario (average of $246). Flying from Europe to Ontario in March is currently the most expensive (average of $328). 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 Europe to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Europe to Ontario

Discover the top 2 airlines that operate flights from Europe to Ontario. 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$560Average$1,072FlexibilityNo cancel feeOn-time69%
KLMCheapest$744Average$879FlexibilityNo cancel feeOn-time75%

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