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Ontario

$278+ 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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — ONT
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Expedia deal was found by Cheapflights users on 12/17. 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.
Thu 12/2511:55 amLHR - ONT
1 stop18h 19mIberia
Mon 1/1210:58 amONT - LHR
1 stop35h 52mIberia
Deal found 12/17$584
This flugladen.de deal was found by Cheapflights users on 12/17. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/269:55 amLHR - ONT
1 stop19h 03mBritish Airways
Sun 1/1111:59 pmONT - LHR
1 stop22h 51mBritish Airways
Deal found 12/17$662
This lastminute.com deal was found by Cheapflights users on 12/17. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:20 pmLHR - ONT
2 stops18h 13mVirgin Atlantic
Mon 1/121:11 pmONT - LHR
2 stops35h 34mVirgin Atlantic
Deal found 12/17$681
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/2511:15 amLHR - ONT
2 stops30h 23mMultiple Airlines
Mon 1/124:45 pmONT - LHR
1 stop12h 30mMultiple Airlines
Deal found 12/17$686
This British Airways deal was found by Cheapflights users on 12/17. 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.
Thu 12/2510:05 amLHR - ONT
1 stop16h 13mBritish Airways
Wed 12/3112:45 pmONT - LHR
1 stop13h 15mBritish Airways
Deal found 12/17$699
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/253:00 pmLHR - ONT
1 stop15h 14mAmerican Airlines
Mon 1/124:45 pmONT - LHR
1 stop12h 30mAmerican Airlines
Deal found 12/17$703
This Expedia deal was found by Cheapflights users on 12/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:50 amFRA - ONT
1 stop19h 08mBritish Airways
Tue 12/306:10 amONT - FRA
1 stop16h 05mBritish Airways
Deal found 12/15$705
This oojo deal was found by Cheapflights users on 12/17. 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.
Wed 12/244:30 pmLHR - ONT
1 stop29h 22mBritish Airways
Wed 12/317:10 amONT - LHR
1 stop15h 40mBritish Airways
Deal found 12/17$706
This Delta deal was found by Cheapflights users on 12/17. 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.
Thu 12/256:30 amLHR - ONT
2 stops21h 20mDelta
Wed 12/317:05 amONT - LHR
1 stop15h 20mDelta
Deal found 12/17$734
This Kissandfly.com deal was found by Cheapflights users on 12/17. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2710:45 amLHR - ONT
1 stop19h 43mVirgin Atlantic
Mon 1/126:00 amONT - LHR
1 stop20h 00mVirgin Atlantic
Deal found 12/17$735
This lastminute.com deal was found by Cheapflights users on 12/15. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:50 amFRA - ONT
1 stop19h 08mBritish Airways
Mon 12/297:10 amONT - FRA
1 stop15h 05mBritish Airways
Deal found 12/15$746
This Kissandfly.com deal was found by Cheapflights users on 12/17. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:45 amLHR - ONT
1 stop19h 48mVirgin Atlantic
Sat 1/106:00 amONT - LHR
1 stop20h 00mVirgin Atlantic
Deal found 12/17$751

Find flight deals from Europe to Ontario

Keep the following information in mind while searching for Europe to Ontario flight deals. Data was last updated December 18, 2025.

Round-trip from

$496
(United Airlines)

One-way from

$278
(Mytrip)

Popular in

August

Cheapest in

February

Average price

$752
From Europe to Ontario
Search Deals
One-way flight from Europe to Ontario
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

StockholmOntario

ARN - ONT

ARNONT

Stockholm Arlanda

Fri 3/6

6:20 am-12:48 pm

2 stops39h 28m

Ontario

Tue 3/10

6:00 am-2:25 pm

2 stops24h 25m

$496

StockholmOntario

ARN - ONT

ARNONT

Stockholm Arlanda

Thu 1/29

7:10 am-6:45 pm

2 stops44h 35m

Ontario

Mon 2/2

11:59 pm-2:10 pm

2 stops53h 11m

$504

StockholmOntario

ARN - ONT

ARNONT

Stockholm Arlanda

Thu 3/26

7:10 am-12:48 pm

2 stops37h 38m

Ontario

Fri 4/24

7:00 am-3:55 pm

2 stops23h 55m

$510

StockholmOntario

ARN - ONT

ARNONT

Stockholm Arlanda

Thu 3/26

8:30 am-10:30 pm

2 stops22h 00m

Ontario

Fri 4/24

12:55 pm-7:05 pm

2 stops21h 10m

$562

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Thu 3/5

1:10 pm-1:54 pm

2 stops33h 44m

Ontario

Mon 3/9

7:00 am-2:55 pm

2 stops23h 55m

$629

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 2/7

10:35 am-6:45 pm

1 stop16h 10m

Ontario

Sat 2/14

3:19 pm-12:15 pm

1 stop12h 56m

$639

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Fri 1/23

12:00 pm-2:18 pm

2 stops35h 18m

Ontario

Fri 2/6

10:58 am-2:55 pm

2 stops18h 57m

$639

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Sat 1/31

7:00 pm-5:22 pm

2 stops31h 22m

Ontario

Sat 2/7

3:09 pm-5:35 pm

2 stops17h 26m

$641

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Thu 3/12

11:35 am-10:30 pm

1 stop18h 55m

Ontario

Wed 3/18

10:56 am-10:35 am

1 stop15h 39m

$643

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Sat 1/31

6:10 am-9:05 pm

2 stops23h 55m

Ontario

Sat 2/7

10:30 pm-10:30 am

1 stop27h 00m

$647

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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, May is the cheapest month in which you can book a flight from Europe to Ontario (average of $308). Flying from Europe to Ontario in November is currently the most expensive (average of $450). 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 December 18, 2025.

When flying from Europe to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 36% versus a flight in the afternoon.

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 December 18, 2025.
See what other customers who have flown with United Airlines 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.
United Airlines
7.4
Good
9,091 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,091 reviews
United Airlines
7.4
Good
9,091 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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?

    United Airlines, American Airlines, and British Airways can get you from Europe to Ontario in just under 16h 10m. Your travel time can differ by up to 28h 25m. Europe and Ontario are separated by a distance of 5407 mi. This flight may include one or multiple stops.

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

    Most travelers choose Paris Charles de Gaulle - Ontario, Frankfurt am Main - Ontario or Munich Franz Josef Strauss - 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, May is the cheapest month in which you can book a flight from Europe to Ontario (average of $308). Flying from Europe to Ontario in November is currently the most expensive (average of $450). 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 airline flying from Europe to Ontario

Discover the top airline 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$560Average$1,075FlexibilityNo cancel feeOn-time69%

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