What airlines fly to Europe?

Iberia, British Airways and Delta are the top three most popular airlines that fly to Europe from Ontario according to our data. Iberia is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Europe. Keep in mind that there are 33 different airlines that fly to Europe on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Europe?

British Airways, United Airlines, and Air Canada are the most popular carriers operating from Ontario to Europe

When did momondo last update prices for flights from Ontario Airport to Europe?

Prices for flights from Ontario Airport to Europe are updated daily.

How many operators does momondo search for flights from Ontario Airport to Europe?

The number of operators available for flights from Ontario Airport to Europe is 6 as of November 2025.

How old do you have to be to fly from Ontario Airport to Europe?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Europe.

What documentation or ID do you need to fly to Europe?

The travel and health documents required for your trip to Europe can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Europe. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$234 Cheap Flights from Ontario to Europe in 2025/26

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Find the cheapest flights from Ontario to Europe

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Cheap round-trip flights

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7:16 am - 6:15 amONT-MAD

13h 59m1 stop

1:15 pm - 10:48 pmMAD-ONT

18h 33m2 stops

$430American Airlines

Find Deal

Sun, Jan 11 - Tue, Jan 27

3:19 pm - 6:25 pmONT-MAD

18h 06m2 stops

1:00 pm - 9:24 pmMAD-ONT

16h 24m1 stop

$432British Airways

Find Deal

Tue, Mar 3 - Thu, Mar 12

3:19 pm - 6:25 pmONT-MAD

18h 06m2 stops

12:55 am - 1:57 pmMAD-ONT

21h 02m1 stop

$434British Airways

Find Deal

Tue, Mar 3 - Mon, Mar 9

6:10 am - 6:15 amONT-MAD

15h 05m1 stop

12:55 am - 1:40 pmMAD-ONT

20h 45m1 stop

$438Iberia

Find Deal

Tue, Mar 3 - Mon, Mar 9

10:20 pm - 9:15 amONT-MAD

25h 55m1 stop

10:05 am - 9:04 pmMAD-ONT

18h 59m1 stop

$443Delta

Find Deal

Sun, Mar 1 - Wed, Mar 18

6:00 am - 9:45 amONT-FCO

18h 45m2 stops

12:00 pm - 11:58 pmFCO-ONT

20h 58m2 stops

$461Delta

Find Deal

Wed, Jan 21 - Wed, Feb 4

1:45 pm - 9:55 amONT-MXP

35h 10m2 stops

12:05 pm - 10:25 pmMXP-ONT

42h 20m2 stops

$467United Airlines

Find Deal

Wed, Mar 4 - Wed, Mar 18

5:00 am - 9:55 amONT-MXP

43h 55m3 stops

12:05 pm - 10:25 pmMXP-ONT

42h 20m2 stops

$478United Airlines

Find Deal

Wed, Mar 4 - Wed, Mar 18

7:10 am - 9:45 amONT-BCN

17h 35m2 stops

9:15 pm - 10:30 pmBCN-ONT

33h 15m2 stops

$532Iberia

Find Deal

Tue, Mar 3 - Tue, Mar 10

1:00 pm - 9:50 amONT-LHR

12h 50m1 stop

11:20 am - 5:16 pmLHR-ONT

13h 56m1 stop

$619KLM

Find Deal

Tue, Apr 21 - Tue, May 12

American Airlines flights from Ontario to Europe

Our best American Airlines deals on Ontario to Europe flight tickets

American Airlines

Jan 11

ONT7:16 amOntario

13h 59m

1 stop

MAD6:15 amMadrid Barajas

Jan 27

MAD1:00 pmMadrid Barajas

30h 08m

1 stop

ONT10:08 amOntario

$430

Find similar

American Airlines

Mar 3

ONT6:10 amOntario

15h 05m

1 stop

MAD6:15 amMadrid Barajas

Mar 9

MAD12:55 amMadrid Barajas

17h 11m

1 stop

ONT10:06 amOntario

$438

Find similar

American Airlines

Mar 3

ONT6:10 amOntario

15h 05m

1 stop

MAD6:15 amMadrid Barajas

Mar 10

MAD10:00 amMadrid Barajas

20h 07m

2 stops

ONT10:07 pmOntario

$442

Find similar

British Airways flights from Ontario to Europe

Our best British Airways deals on Ontario to Europe flight tickets

British Airways

Mar 3

ONT3:19 pmOntario

18h 06m

2 stops

MAD6:25 pmMadrid Barajas

Mar 12

MAD1:00 pmMadrid Barajas

16h 24m

1 stop

ONT9:24 pmOntario

$432

Find similar

British Airways

Mar 3

ONT3:19 pmOntario

18h 06m

2 stops

MAD6:25 pmMadrid Barajas

Mar 9

MAD12:55 amMadrid Barajas

21h 02m

1 stop

ONT1:57 pmOntario

$434

Find similar

British Airways

Mar 3

ONT3:19 pmOntario

18h 06m

2 stops

MAD6:25 pmMadrid Barajas

Mar 10

MAD8:50 pmMadrid Barajas

29h 52m

2 stops

ONT6:42 pmOntario

$436

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 1/11

7:16 am-6:15 am

1 stop13h 59m

Madrid Barajas

Tue 1/27

1:15 pm-10:48 pm

2 stops18h 33m

$430

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 3/3

3:19 pm-6:25 pm

2 stops18h 06m

Madrid Barajas

Thu 3/12

1:00 pm-9:24 pm

1 stop16h 24m

$432

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 3/3

3:19 pm-6:25 pm

2 stops18h 06m

Madrid Barajas

Mon 3/9

12:55 am-1:57 pm

1 stop21h 02m

$434

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 3/3

6:10 am-6:15 am

1 stop15h 05m

Madrid Barajas

Mon 3/9

12:55 am-1:40 pm

1 stop20h 45m

$438

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 3/1

10:20 pm-9:15 am

1 stop25h 55m

Madrid Barajas

Wed 3/18

10:05 am-9:04 pm

1 stop18h 59m

$443

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 1/21

6:00 am-9:45 am

2 stops18h 45m

Rome Fiumicino

Wed 2/4

12:00 pm-11:58 pm

2 stops20h 58m

$461

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 3/4

1:45 pm-9:55 am

2 stops35h 10m

Milan Malpensa

Wed 3/18

12:05 pm-10:25 pm

2 stops42h 20m

$467

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 3/4

5:00 am-9:55 am

3 stops43h 55m

Milan Malpensa

Wed 3/18

12:05 pm-10:25 pm

2 stops42h 20m

$478

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 3/3

7:10 am-9:45 am

2 stops17h 35m

Barcelona-El Prat

Tue 3/10

9:15 pm-10:30 pm

2 stops33h 15m

$532

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 4/21

1:00 pm-9:50 am

1 stop12h 50m

London Heathrow

Tue 5/12

11:20 am-5:16 pm

1 stop13h 56m

$619

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Europe

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Europe?

The cheapest month to fly to Europe from Ontario is in October. Flight prices, which tend to average around $679, are often lower during this time because this is during the off-season. If you aren’t able to travel to Europe during the month of October, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $684.

What is the cheapest day to depart on your flight to Europe?

The cheapest day to depart from Ontario to Europe is on a Wednesday. Travelers who choose to depart for Europe on a Wednesday will often find tickets for as low as $668. Flights from Ontario to Europe on a Saturday will generally be more expensive and average around $1,112. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Europe?

According to our data, the cheapest time of day to fly to Europe is in the evening. momondo users have found flights departing from Ontario to Europe in the evening for as low as $662. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the morning because they tend to be around $871. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Europe?

You are more likely to see cheaper flights to Europe from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Europe for around $834 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Europe from Ontario for as low as $606 on momondo.

Can stopping save me money on Ontario to Europe flights?

You could potentially save up to 34% on your flight if you consider stops on a Ontario to Europe flight.

Cheap Ontario to Europe flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Europe

Fastest flight time	12h 06m
Direct flights	None

The fastest flight from Ontario to Europe takes 12h 06m

There are no direct flights from Ontario to Europe. There are no popular flight routes from Ontario to Europe.

Search flight deals

When did momondo last update prices for flights from Ontario Airport to Europe?
Prices for flights from Ontario Airport to Europe are updated daily.
How many operators does momondo search for flights from Ontario Airport to Europe?
The number of operators available for flights from Ontario Airport to Europe is 6 as of November 2025.
How old do you have to be to fly from Ontario Airport to Europe?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Europe.
What documentation or ID do you need to fly to Europe?
The travel and health documents required for your trip to Europe can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Europe. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to Europe

Compare and see reviews for airlines that fly from Ontario to Europe with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $444	Free Cancellation	Rating 7.9 7,998 reviews	Search Delta flights
British Airways	PriceFrom $489	Free Cancellation	Rating 6.7 7,539 reviews	Search British Airways flights
Iberia	PriceFrom $496	Free Cancellation	Rating 7.0 3,034 reviews	Search Iberia flights
United Airlines	PriceFrom $515	Free Cancellation	Rating 7.4 9,046 reviews	Search United Airlines flights
KLM	PriceFrom $580	Free Cancellation	Rating 7.7 1,422 reviews	Search KLM flights
American Airlines	PriceFrom $595	Free Cancellation	Rating 7.2 11,038 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Europe?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Europe for you.

Can I find flights from Ontario to Europe with flexible booking policies on momondo?

Flights from Ontario to Europe with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Europe?

Once all potential Ontario to Europe flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Europe right now. Can momondo alert me if prices change?

Price alerts on flights to Europe from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.