How long is the flight from Ontario to Europe?

For as low as $491, United Airlines can have you in Europe from Ontario in 13h 27m. Airlines will cover a distance of 5790 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $374. Iberia flights start at $377 while deals on Delta start at $386 one-way.

In terms of precipitation, rainfall in Europe ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit Europe when rainfall is around 1.6 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

What are the most popular routes from Ontario to Europe?

The most popular route from Ontario to Europe is Ontario - Rome Fiumicino. You may also consider Ontario - London Heathrow or Ontario - Paris Charles de Gaulle.

What are the most popular airlines that fly from Ontario to Europe?

Consider United Airlines, Delta or British Airways when booking your flight. These represent the most popular airlines when flying from Ontario to Europe.

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.

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.

$302+ Flights from Ontario to Europe

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Cheap flight deals from Ontario to Europe

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$428 (American Airlines)
One-way from	$302 (Kiwi.com)
Popular in	December
Cheapest in	September
Average price	$615

Provider with most accurate pricing for Los Angeles-London (LON) flight deals.

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Provider most trusted by Cheapflights users for Los Angeles-London (LON) flights.

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From Ontario to Europe

Search Deals

One-way flight from Ontario to Europe

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($106 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 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 October 16, 2025.

Sun 11/236:10 amONT - MAD

1 stop15h 05mAmerican Airlines

Mon 12/812:55 amMAD - ONT

1 stop19h 58mAmerican Airlines

Deal found 10/14

$428

Tue 11/186:10 amONT - MAD

1 stop15h 05mIberia

Mon 11/2412:55 amMAD - ONT

1 stop18h 02mIberia

Deal found 10/15

$437

Sun 10/267:05 amONT - MAD

1 stop17h 00mDelta

Thu 11/611:15 amMAD - ONT

1 stop20h 07mDelta

Deal found 10/14

$438

Mon 12/110:25 pmONT - MAD

1 stop25h 50mDelta

Tue 12/1610:00 amMAD - ONT

2 stops22h 04mDelta

Deal found 10/16

$448

Mon 12/87:05 amONT - FCO

1 stop18h 25mDelta

Wed 12/2410:05 amFCO - ONT

1 stop18h 45mDelta

Deal found 10/15

$466

Sun 12/77:05 amONT - FCO

1 stop15h 50mKLM

Tue 12/2310:05 amFCO - ONT

1 stop18h 45mKLM

Deal found 10/16

$474

Tue 11/1110:25 pmONT - FCO

1 stop24h 30mDelta

Thu 11/2011:05 amFCO - ONT

2 stops21h 47mDelta

Deal found 10/15

$480

Sun 11/2310:25 pmONT - FCO

1 stop27h 05mDelta

Thu 12/412:40 pmFCO - ONT

1 stop19h 24mDelta

Deal found 10/16

$481

Tue 12/25:05 amONT - MAD

2 stops17h 55mUnited Airlines

Tue 12/166:00 amMAD - ONT

2 stops25h 49mUnited Airlines

Deal found 10/16

$487

Fri 12/57:05 amONT - MAD

1 stop17h 10mDelta

Fri 12/1211:15 amMAD - ONT

1 stop17h 24mDelta

Deal found 10/16

$488

Tue 10/285:05 amONT - MAD

2 stops18h 55mUnited Airlines

Thu 11/66:25 amMAD - ONT

2 stops25h 06mUnited Airlines

Deal found 10/14

$490

Tue 11/1110:25 pmONT - FCO

1 stop24h 30mDelta

Fri 11/219:20 amFCO - ONT

2 stops58h 46mDelta

Deal found 10/16

$491

Best flights from Ontario to Europe
Discover carefully curated flight deals from Ontario to Europe that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 16, 2025.

Tue 12/25:05 amONT - MAD

2 stops17h 55mUnited Airlines

Wed 12/175:55 amMAD - ONT

2 stops25h 54mUnited Airlines

Deal found 10/16

$487

Tue 2/1010:58 amONT - MAD

1 stop13h 27mBritish Airways

Sun 2/151:00 pmMAD - ONT

1 stop16h 24mBritish Airways

Deal found 10/14

$491

Sun 2/1510:30 pmONT - MAD

1 stop25h 45mDelta

Sun 2/2211:15 amMAD - ONT

1 stop18h 59mDelta

Deal found 10/14

$493

Sun 12/710:47 amONT - FCO

1 stop14h 58mMultiple Airlines

Tue 12/231:10 pmFCO - ONT

1 stop18h 04mMultiple Airlines

Deal found 10/15

$497

Sat 11/291:20 pmONT - CDG

2 stops21h 35mVirgin Atlantic

Sat 12/67:35 amCDG - ONT

2 stops23h 20mVirgin Atlantic

Deal found 10/15

$566

Mon 11/107:05 amONT - PMI

2 stops18h 05mKLM

Wed 11/197:05 amPMI - ONT

2 stops21h 37mKLM

Deal found 10/14

$707

Wed 3/1810:30 pmONT - FRA

1 stop26h 10mAir France

Wed 4/110:40 amFRA - ONT

1 stop19h 34mAir France

Deal found 10/16

$711

Mon 11/175:05 amONT - FCO

2 stops20h 50mUnited Airlines

Tue 11/251:05 pmFCO - ONT

2 stops42h 26mUnited Airlines

Deal found 10/14

$494

Wed 11/1211:44 amONT - FCO

2 stops23h 01mDelta

Thu 11/2011:05 amFCO - ONT

2 stops21h 47mDelta

Deal found 10/15

$498

Wed 11/126:00 amONT - FCO

2 stops17h 55mUnited Airlines

Fri 11/219:45 amFCO - ONT

2 stops21h 46mUnited Airlines

Deal found 10/16

$502

Thu 11/137:00 amONT - CDG

1 stop17h 55mMultiple Airlines

Thu 11/202:35 pmCDG - ONT

2 stops17h 16mMultiple Airlines

Deal found 10/14

$554

Sun 3/811:29 amONT - FCO

2 stops37h 41mDelta

Fri 3/206:00 amFCO - ONT

2 stops24h 38mDelta

Deal found 10/16

$522

Tue 1/205:05 amONT - FCO

2 stops19h 20mUnited Airlines

Wed 2/49:45 amFCO - ONT

2 stops22h 08mUnited Airlines

Deal found 10/16

$502

Tue 2/36:00 amONT - CDG

1 stop18h 05mMultiple Airlines

Tue 2/106:50 amCDG - ONT

2 stops20h 55mMultiple Airlines

Deal found 10/16

$556

Wed 12/37:05 amONT - DUB

1 stop16h 40mDelta

Wed 12/105:55 amDUB - ONT

2 stops19h 12mDelta

Deal found 10/14

$551

Tue 11/187:00 amONT - FCO

1 stop15h 45mUnited Airlines

Thu 11/277:00 amFCO - ONT

2 stops19h 34mUnited Airlines

Deal found 10/15

$504

Thu 1/87:16 amONT - CDG

1 stop16h 49mMultiple Airlines

Wed 1/146:50 amCDG - ONT

2 stops20h 55mMultiple Airlines

Deal found 10/15

$556

Thu 11/1311:48 amONT - CDG

2 stops20h 17mDelta

Wed 11/267:10 amCDG - ONT

2 stops21h 32mDelta

Deal found 10/15

$555

Thu 12/410:47 amONT - FCO

1 stop14h 58mMultiple Airlines

Thu 12/111:10 pmFCO - ONT

1 stop18h 09mMultiple Airlines

Deal found 10/16

$556

Tue 11/111:33 pmONT - FCO

2 stops34h 22mUnited Airlines

Fri 11/219:45 amFCO - ONT

1 stop21h 46mUnited Airlines

Deal found 10/15

$506

Mon 11/107:05 amONT - PMI

2 stops18h 05mKLM

Wed 11/267:05 amPMI - ONT

2 stops21h 37mKLM

Deal found 10/15

$763

Wed 11/265:05 amONT - MAD

2 stops25h 55mUnited Airlines

Wed 12/38:30 amMAD - ONT

2 stops23h 19mUnited Airlines

Deal found 10/14

$507

Sat 11/296:00 amONT - CDG

1 stop17h 15mDelta

Sun 12/77:10 amCDG - ONT

2 stops18h 57mDelta

Deal found 10/14

$559

Fri 11/287:00 amONT - PMI

2 stops19h 00mMultiple Airlines

Fri 12/54:00 pmPMI - ONT

2 stops37h 42mMultiple Airlines

Deal found 10/14

$564

Mon 11/177:05 amONT - CDG

1 stop14h 05mDelta

Wed 12/33:30 pmCDG - ONT

1 stop16h 34mDelta

Deal found 10/15

$562

Thu 11/136:11 amONT - CDG

2 stops15h 24mMultiple Airlines

Wed 11/2611:25 amCDG - ONT

2 stops19h 58mMultiple Airlines

Deal found 10/16

$565

Tue 12/96:00 amONT - VCE

2 stops17h 55mUnited Airlines

Tue 12/1611:05 amVCE - ONT

2 stops20h 44mUnited Airlines

Deal found 10/15

$515

Fri 11/286:00 amONT - MAD

2 stops17h 00mUnited Airlines

Fri 12/51:35 pmMAD - ONT

3 stops42h 14mUnited Airlines

Deal found 10/14

$515

Wed 11/510:47 amONT - LHR

1 stop13h 48mMultiple Airlines

Tue 11/118:20 amLHR - ONT

1 stop18h 01mMultiple Airlines

Deal found 10/14

$618

Mon 12/11:20 pmONT - LHR

1 stop12h 40mDelta

Wed 12/2410:45 amLHR - ONT

1 stop19h 48mDelta

Deal found 10/15

$628

Last-minute flights from Ontario to Europe
Discover last-minute flight deals from Ontario to Europe. Data last updated October 16, 2025 and is based on user searches.

Sun 10/267:05 amONT - MAD

1 stop17h 00mDelta

Thu 11/611:15 amMAD - ONT

1 stop20h 07mDelta

Deal found 10/14

$438

Tue 10/287:00 amONT - MAD

2 stops17h 00mUnited Airlines

Tue 11/116:00 amMAD - ONT

2 stops20h 34mUnited Airlines

Deal found 10/14

$487

Tue 10/285:05 amONT - MAD

2 stops18h 55mUnited Airlines

Thu 11/66:25 amMAD - ONT

2 stops25h 06mUnited Airlines

Deal found 10/14

$490

Wed 10/297:00 amONT - MAD

2 stops18h 15mUnited Airlines

Wed 11/125:55 amMAD - ONT

2 stops25h 56mUnited Airlines

Deal found 10/14

$492

Wed 10/297:00 amONT - MAD

2 stops18h 15mUnited Airlines

Fri 11/1411:05 amMAD - ONT

2 stops18h 39mUnited Airlines

Deal found 10/14

$493

Sun 11/96:10 amONT - MAD

1 stop15h 05mIberia

Mon 11/2412:55 amMAD - ONT

1 stop19h 58mIberia

Deal found 10/15

$491

Tue 11/1110:25 pmONT - FCO

1 stop24h 30mDelta

Thu 11/2011:05 amFCO - ONT

2 stops21h 47mDelta

Deal found 10/15

$480

Tue 11/1110:25 pmONT - FCO

1 stop24h 30mDelta

Fri 11/219:20 amFCO - ONT

2 stops58h 46mDelta

Deal found 10/16

$491

Mon 11/177:05 amONT - FCO

1 stop15h 50mKLM

Tue 11/256:10 amFCO - ONT

2 stops19h 59mKLM

Deal found 10/14

$492

Tue 11/186:10 amONT - MAD

1 stop15h 05mIberia

Mon 11/2412:55 amMAD - ONT

1 stop18h 02mIberia

Deal found 10/15

$437

Sun 11/236:10 amONT - MAD

1 stop15h 05mAmerican Airlines

Mon 12/812:55 amMAD - ONT

1 stop19h 58mAmerican Airlines

Deal found 10/14

$428

Sun 11/2310:25 pmONT - FCO

1 stop27h 05mDelta

Thu 12/412:40 pmFCO - ONT

1 stop19h 24mDelta

Deal found 10/16

$481

One-way flights from Ontario to Europe
Search for one-way flight options from Ontario to Europe. Find affordable one-way fares based on user searches. Data last updated October 16, 2025.

Sat 11/151:37 pmONT - FRA

3 stops58h 03mMultiple Airlines

Deal found 10/15

$302

Mon 10/208:15 amONT - FCO

1 stop14h 50mBritish Airways

Deal found 10/16

$373

Tue 11/183:08 pmONT - FCO

2 stops21h 47mBritish Airways

Deal found 10/16

$374

Sun 10/198:15 amONT - FCO

1 stop14h 50mIberia

Deal found 10/15

$377

Wed 10/228:15 amONT - FCO

1 stop14h 50mIberia

Deal found 10/16

$378

Sun 11/306:10 amONT - FCO

1 stop19h 35mIberia

Deal found 10/16

$379

Wed 11/126:10 amONT - FCO

1 stop19h 35mBritish Airways

Deal found 10/15

$385

Mon 12/87:05 amONT - FCO

1 stop15h 50mDelta

Deal found 10/16

$386

Fri 10/2410:56 pmONT - LHR

1 stop13h 49mJetBlue

Deal found 10/14

$388

Mon 11/177:05 amONT - FCO

1 stop15h 50mKLM

Deal found 10/15

$388

Wed 10/2912:47 pmONT - VCE

2 stops16h 33mBritish Airways

Deal found 10/16

$389

Sun 10/264:49 pmONT - FCO

2 stops19h 06mBritish Airways

Deal found 10/16

$390

Fly from

Fly to

Route

Depart

Return

Price

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 12/2

5:05 am-8:00 am

2 stops17h 55m

Madrid Barajas

Wed 12/17

5:55 am-10:49 pm

2 stops25h 54m

$487

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 2/10

10:58 am-9:25 am

1 stop13h 27m

Madrid Barajas

Sun 2/15

1:00 pm-8:24 pm

1 stop16h 24m

$491

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 2/15

10:30 pm-9:15 am

1 stop25h 45m

Madrid Barajas

Sun 2/22

11:15 am-9:14 pm

1 stop18h 59m

$493

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 11/17

5:05 am-10:55 am

2 stops20h 50m

Rome Fiumicino

Tue 11/25

1:05 pm-10:31 pm

2 stops42h 26m

$494

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 12/7

10:47 am-10:45 am

1 stop14h 58m

Rome Fiumicino

Tue 12/23

1:10 pm-10:14 pm

1 stop18h 04m

$497

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 11/12

11:44 am-7:45 pm

2 stops23h 01m

Rome Fiumicino

Thu 11/20

11:05 am-11:52 pm

2 stops21h 47m

$498

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 11/12

6:00 am-8:55 am

2 stops17h 55m

Rome Fiumicino

Fri 11/21

9:45 am-10:31 pm

2 stops21h 46m

$502

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 1/20

5:05 am-9:25 am

2 stops19h 20m

Rome Fiumicino

Wed 2/4

9:45 am-10:53 pm

2 stops22h 08m

$502

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 11/18

7:00 am-7:45 am

1 stop15h 45m

Rome Fiumicino

Thu 11/27

7:00 am-5:34 pm

2 stops19h 34m

$504

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 11/11

1:33 pm-8:55 am

2 stops34h 22m

Rome Fiumicino

Fri 11/21

9:45 am-10:31 pm

1 stop21h 46m

$506

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 60 results

...

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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Europe

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

Currently, October is the cheapest month in which you can book a flight from Ontario to Europe (average of $347). Flying from Ontario to Europe in June is currently the most expensive (average of $582). 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?

One of the essential ways to save on airfare from Ontario to Europe is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 8% on airfare.

What is the cheapest day to fly from Ontario to Europe?

Travelers seeking maximum savings on their Ontario to Europe flight should consider departing on Tuesday mornings when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Europe

See what other customers who have flown with Delta, United Airlines, and American Airlines from Ontario to Europe have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,982 reviews

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

7,982 reviews

Delta

8.0

Very good

7,982 reviews

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.

United Airlines

7.4

Good

8,982 reviews

Delta

8.0

Very good

7,982 reviews

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.

American Airlines

7.2

Good

11,040 reviews

Delta

8.0

Very good

7,982 reviews

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.

Iberia

7.0

Good

2,994 reviews

Delta

8.0

Very good

7,982 reviews

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.

British Airways

6.7

Okay

7,457 reviews

Delta

8.0

Very good

7,982 reviews

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

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.
How long is the flight from Ontario to Europe?
For as low as $491, United Airlines can have you in Europe from Ontario in 13h 27m. Airlines will cover a distance of 5790 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines to fly from Ontario to Europe one-way?
To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $374. Iberia flights start at $377 while deals on Delta start at $386 one-way.
What are the most popular routes from Ontario to Europe?
The most popular route from Ontario to Europe is Ontario - Rome Fiumicino. You may also consider Ontario - London Heathrow or Ontario - Paris Charles de Gaulle.
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, October is the cheapest month in which you can book a flight from Ontario to Europe (average of $347). Flying from Ontario to Europe in June is currently the most expensive (average of $582). 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

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from Ontario to Europe

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$444	Average$780	FlexibilityNo cancel fee	On-timeN/A
Virgin Atlantic	Cheapest$469	Average$884	FlexibilityNo cancel fee	On-time72%
British Airways	Cheapest$489	Average$924	FlexibilityNo cancel fee	On-time70%
Iberia	Cheapest$496	Average$847	FlexibilityNo cancel fee	On-time77%
United Airlines	Cheapest$515	Average$853	FlexibilityNo cancel fee	On-time69%
KLM	Cheapest$580	Average$818	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$621	Average$1,101	FlexibilityNo cancel fee	On-time71%

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$302+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.

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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 October 16, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Europe

Cheapest flights from Ontario to EuropeExplore 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 October 16, 2025.

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 October 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Europe that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Europe

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

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 October 16, 2025.

What is the cheapest day to fly from Ontario to Europe?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Europe. Price data was last updated on December 16, 2024.

Reviews of airlines servicing Europe

See what other customers who have flown with Delta, United Airlines, and American Airlines from Ontario to Europe have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

How long is the flight from Ontario to Europe?

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

What are the most popular routes from Ontario to Europe?

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

How can I find direct flights from Ontario to Europe?

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

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

Browse thousands of different options on Cheapflights for your next trip

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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.

Top 7 airlines flying from Ontario to Europe

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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 October 16, 2025.