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Ontario

$457+ Cheap flights from Europe to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — ONT
июн 21 — июн 281
сб. 6/21
сб. 6/28
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 июнь 16, 2025.

Round-trip from

$457
(United Airlines)

Popular in

August

Cheapest in

February

Average price

$739
From Europe to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($146 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 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 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 июнь 16, 2025.

This United Airlines deal was found by Cheapflights users on 6/15. 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.
ср. 9/312:10 pmBCN - ONT
2 stops19h 20mUnited Airlines
ср. 9/105:10 amONT - BCN
2 stops17h 40mUnited Airlines
Deal found 6/15$457
This United Airlines deal was found by Cheapflights users on 6/14. 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.
чт. 11/135:55 amMAD - ONT
2 stops20h 39mUnited Airlines
чт. 11/206:00 amONT - MAD
2 stops17h 05mUnited Airlines
Deal found 6/14$459
This British Airways deal was found by Cheapflights users on 6/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ср. 11/512:40 pmMAD - ONT
2 stops20h 05mBritish Airways
ср. 11/1211:00 amONT - MAD
2 stops17h 25mBritish Airways
Deal found 6/15$465
This British Airways deal was found by Cheapflights users on 6/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
чт. 10/3011:10 amBCN - ONT
2 stops20h 52mBritish Airways
вт. 11/118:46 amONT - BCN
2 stops17h 34mBritish Airways
Deal found 6/15$466
This Lufthansa deal was found by Cheapflights users on 6/15. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
чт. 10/305:50 amBCN - ONT
2 stops19h 44mMultiple Airlines
вт. 11/117:00 amONT - BCN
1 stop21h 05mMultiple Airlines
Deal found 6/15$470
This Air Canada deal was found by Cheapflights users on 6/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
вт. 9/912:45 pmMAD - ONT
2 stops16h 58mAir Canada
пн. 9/225:10 amONT - MAD
2 stops16h 30mAir Canada
Deal found 6/15$473
This Iberia deal was found by Cheapflights users on 6/15. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
чт. 9/254:00 pmMAD - ONT
1 stop17h 17mIberia
вт. 9/302:54 pmONT - MAD
1 stop14h 26mIberia
Deal found 6/15$496
This Air Canada deal was found by Cheapflights users on 6/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
сб. 9/1312:45 pmMAD - ONT
2 stops16h 58mMultiple Airlines
вс. 9/217:00 amONT - MAD
2 stops16h 20mMultiple Airlines
Deal found 6/15$514
This United Airlines deal was found by Cheapflights users on 6/14. 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.
пн. 9/810:30 amCDG - ONT
2 stops19h 03mUnited Airlines
пн. 9/157:00 amONT - CDG
1 stop17h 20mUnited Airlines
Deal found 6/14$527
This Netflights deal was found by Cheapflights users on 6/13. 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.
ср. 9/1011:45 amLHR - ONT
2 stops18h 55mVirgin Atlantic
ср. 9/171:00 pmONT - LHR
2 stops16h 50mVirgin Atlantic
Deal found 6/13$531
This American Airlines deal was found by Cheapflights users on 6/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ср. 10/292:30 pmLHR - ONT
1 stop14h 10mAmerican Airlines
сб. 11/85:01 pmONT - LHR
1 stop12h 19mAmerican Airlines
Deal found 6/15$538
This British Airways deal was found by Cheapflights users on 6/14. 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.
пн. 11/242:55 pmLHR - ONT
1 stop15h 05mBritish Airways
пт. 12/55:09 pmONT - LHR
1 stop12h 11mBritish Airways
Deal found 6/14$539

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 июнь 16, 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

ср. 9/3

12:10 pm-10:30 pm

2 stops19h 20m

Ontario

ср. 9/10

5:10 am-7:50 am

2 stops17h 40m

$457

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

чт. 11/13

5:55 am-5:34 pm

2 stops20h 39m

Ontario

чт. 11/20

6:00 am-8:05 am

2 stops17h 05m

$459

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

ср. 11/5

12:40 pm-11:45 pm

2 stops20h 05m

Ontario

ср. 11/12

11:00 am-1:25 pm

2 stops17h 25m

$465

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

вт. 9/9

12:45 pm-8:43 pm

2 stops16h 58m

Ontario

пн. 9/22

5:10 am-6:40 am

2 stops16h 30m

$473

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

чт. 9/25

4:00 pm-12:17 am

1 stop17h 17m

Ontario

вт. 9/30

2:54 pm-2:20 pm

1 stop14h 26m

$496

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

сб. 9/13

12:45 pm-8:43 pm

2 stops16h 58m

Ontario

вс. 9/21

7:00 am-8:20 am

2 stops16h 20m

$514

ParisOntario

CDG - ONT

CDGONT

Paris Charles de Gaulle

пн. 9/8

10:30 am-8:33 pm

2 stops19h 03m

Ontario

пн. 9/15

7:00 am-9:20 am

1 stop17h 20m

$527

LondonOntario

LHR - ONT

LHRONT

London Heathrow

ср. 9/10

11:45 am-10:40 pm

2 stops18h 55m

Ontario

ср. 9/17

1:00 pm-1:50 pm

2 stops16h 50m

$531

LondonOntario

LHR - ONT

LHRONT

London Heathrow

ср. 10/29

2:30 pm-9:40 pm

1 stop14h 10m

Ontario

сб. 11/8

5:01 pm-1:20 pm

1 stop12h 19m

$538

LondonOntario

LHR - ONT

LHRONT

London Heathrow

пн. 11/24

2:55 pm-10:00 pm

1 stop15h 05m

Ontario

пт. 12/5

5:09 pm-1:20 pm

1 stop12h 11m

$539

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

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 июнь 16, 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.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 июнь 16, 2025.
Delta
8.0
Very good
7,963 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,963 reviews
Delta
8.0
Very good
7,963 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,361 reviews
Delta
8.0
Very good
7,963 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,291 reviews
Delta
8.0
Very good
7,963 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,963 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Qatar Airways
7.4
Good
3,585 reviews
Delta
8.0
Very good
7,963 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $597. Iberia flights start at $632 while deals on Air Serbia start at $709 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 London Heathrow - 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 июнь 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$560Average$1,040FlexibilityNo cancel feeOn-time69%
KLMCheapest$744Average$879FlexibilityNo cancel feeOn-time75%

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