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Ontario

$322+ 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — ONT
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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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 November 2, 2025.

This American Airlines deal was found by Cheapflights users on 10/31. 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.
Wed 12/37:10 amCDG - ONT
2 stops24h 18mAmerican Airlines
Mon 12/812:46 pmONT - CDG
2 stops17h 34mAmerican Airlines
Deal found 10/31$523
This British Airways deal was found by Cheapflights users on 10/31. 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.
Tue 12/211:40 amCDG - ONT
2 stops43h 48mBritish Airways
Sun 12/77:03 amONT - CDG
2 stops18h 37mBritish Airways
Deal found 10/31$525
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Fri 12/510:20 amCDG - ONT
2 stops21h 29mUnited Airlines
Sun 12/76:00 amONT - CDG
1 stop18h 40mUnited Airlines
Deal found 10/31$529
This American Airlines deal was found by Cheapflights users on 10/31. 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.
Wed 12/37:10 amCDG - ONT
2 stops24h 18mAmerican Airlines
Sat 12/134:47 pmONT - CDG
2 stops31h 18mAmerican Airlines
Deal found 10/31$530
This Iberia deal was found by Cheapflights users on 10/31. 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.
Sat 11/2211:05 amCDG - ONT
1 stop21h 52mIberia
Sat 12/66:00 amONT - CDG
1 stop18h 05mIberia
Deal found 10/31$536
This Mytrip deal was found by Cheapflights users on 10/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/221:00 pmMAD - ONT
1 stop17h 11mBritish Airways
Sat 2/2110:59 amONT - MAD
1 stop13h 26mBritish Airways
Deal found 10/31$541
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Sat 11/1511:40 amCDG - ONT
2 stops20h 11mUnited Airlines
Mon 11/246:00 amONT - CDG
1 stop18h 40mUnited Airlines
Deal found 10/31$561
This Iberia deal was found by Cheapflights users on 10/31. 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.
Thu 12/411:05 amCDG - ONT
1 stop20h 14mIberia
Wed 2/410:58 amONT - CDG
1 stop13h 07mIberia
Deal found 10/31$570
This Air Canada deal was found by Cheapflights users on 10/31. 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.
Fri 12/52:00 pmCDG - ONT
3 stops31h 32mAir Canada
Sun 12/75:05 amONT - CDG
3 stops20h 25mAir Canada
Deal found 10/31$575
This Rumbo deal was found by Cheapflights users on 11/1. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/410:10 amLHR - ONT
2 stops21h 48mVirgin Atlantic
Wed 12/176:00 amONT - LHR
2 stops17h 05mVirgin Atlantic
Deal found 11/1$593
This Kissandfly.com deal was found by Cheapflights users on 10/31. 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.
Mon 11/1711:55 amCDG - ONT
1 stop15h 41mLufthansa
Sun 11/306:00 amONT - CDG
1 stop18h 40mLufthansa
Deal found 10/31$610
This Kissandfly.com deal was found by Cheapflights users on 10/31. 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 12/109:00 amCDG - ONT
1 stop17h 37mLufthansa
Sun 3/86:00 amONT - CDG
1 stop19h 40mLufthansa
Deal found 10/31$613

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 November 2, 2025.

Round-trip from

$469
(United Airlines)

One-way from

$322
(Trip.com)

Popular in

August

Cheapest in

February

Average price

$679
From Europe to Ontario
Search Deals
One-way flight from Europe to Ontario
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($87 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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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 November 2, 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

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Fri 2/20

1:00 pm-9:28 pm

1 stop17h 28m

Ontario

Tue 2/24

6:10 am-9:25 am

1 stop18h 15m

$500

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Fri 1/16

1:15 pm-10:48 pm

2 stops18h 33m

Ontario

Sat 1/31

10:58 am-9:25 am

1 stop13h 27m

$517

ParisOntario

CDG - ONT

CDGONT

Paris Charles de Gaulle

Sun 1/11

8:35 pm-5:22 pm

2 stops29h 47m

Ontario

Wed 1/28

3:09 pm-5:25 pm

2 stops17h 16m

$526

ParisOntario

CDG - ONT

CDGONT

Paris Charles de Gaulle

Tue 1/13

7:10 am-6:45 pm

2 stops20h 35m

Ontario

Wed 1/28

3:09 pm-5:25 pm

2 stops17h 16m

$526

ParisOntario

CDG - ONT

CDGONT

Paris Charles de Gaulle

Wed 1/14

7:10 am-6:45 pm

2 stops20h 35m

Ontario

Sat 1/31

3:09 pm-5:50 pm

2 stops17h 41m

$526

ParisOntario

CDG - ONT

CDGONT

Paris Charles de Gaulle

Fri 1/16

7:05 am-5:22 pm

2 stops19h 17m

Ontario

Wed 1/28

10:58 am-5:25 pm

2 stops21h 27m

$526

ParisOntario

CDG - ONT

CDGONT

Paris Charles de Gaulle

Mon 1/12

7:05 am-6:45 pm

2 stops20h 40m

Ontario

Mon 1/26

4:45 pm-5:20 pm

2 stops15h 35m

$526

ParisOntario

CDG - ONT

CDGONT

Paris Charles de Gaulle

Tue 1/13

7:10 am-6:45 pm

2 stops20h 35m

Ontario

Thu 1/29

7:16 am-5:40 pm

2 stops25h 24m

$526

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 2/26

10:00 am-10:38 pm

2 stops44h 38m

Ontario

Mon 3/2

1:00 pm-10:00 am

1 stop13h 00m

$559

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 3/7

3:05 pm-10:38 pm

1 stop15h 33m

Ontario

Wed 3/18

1:00 pm-10:00 am

1 stop14h 00m

$576

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/31

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 $292). Flying from Europe to Ontario in July is currently the most expensive (average of $468). 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 November 2, 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 November 2, 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
8,994 reviews

Comfort

7.3

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

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
8,994 reviews
United Airlines
7.4
Good
8,994 reviews

Comfort

7.3

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

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?

    British Airways, American Airlines, and Virgin Atlantic can get you from Europe to Ontario in just under 17h 28m. Your travel time can differ by up to 27h 10m. Europe and Ontario are separated by a distance of 5790 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 British Airways, which is currently one of the cheapest options available, starting at $423. United Airlines flights start at $424 while deals on American Airlines start at $432 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, May is the cheapest month in which you can book a flight from Europe to Ontario (average of $292). Flying from Europe to Ontario in July is currently the most expensive (average of $468). 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 November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$560Average$1,083FlexibilityNo cancel feeOn-time69%

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