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

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 32% of people opting to fly with this airline when traveling to Europe. Keep in mind that there are 34 different airlines that fly to Europe on a routine basis, so you have a few additional options to choose from.

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 January 2026.

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.

$257 Cheap Flights from Ontario to Europe in 2026

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Find the cheapest flights from Ontario to Europe

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:02 pm - 1:05 am

ONT

ATH

22h 03m

2 stops

8:20 pm - 10:07 pm

ATH

ONT

35h 47m

2 stops

$491British Airways

Wed, Feb 25 - Wed, Mar 4

2:39 pm - 1:05 am

ONT

ATH

24h 26m

2 stops

1:30 pm - 10:07 pm

ATH

ONT

42h 37m

2 stops

$492British Airways

Wed, Feb 25 - Wed, Mar 4

10:25 pm - 12:15 pm

ONT

MAD

28h 50m

1 stop

12:45 pm - 9:00 pm

MAD

ONT

17h 15m

1 stop

$497Delta

Sat, Apr 11 - Mon, Apr 20

6:37 pm - 1:40 am

ONT

ATH

21h 03m

2 stops

6:05 am - 10:57 pm

ATH

ONT

25h 52m

2 stops

$503United Airlines

Mon, Mar 2 - Fri, Mar 13

5:00 am - 8:00 am

ONT

MAD

18h 00m

2 stops

12:40 pm - 10:18 pm

MAD

ONT

41h 38m

2 stops

$507United Airlines

Wed, Feb 18 - Wed, Mar 11

7:30 am - 10:45 pm

ONT

FCO

30h 15m

2 stops

6:10 am - 10:37 pm

FCO

ONT

25h 27m

2 stops

$514Delta

Wed, Feb 25 - Tue, Mar 3

7:00 am - 6:15 am

ONT

MAD

14h 15m

1 stop

12:55 am - 10:06 am

MAD

ONT

18h 11m

1 stop

$524Iberia

Tue, Feb 24 - Mon, Mar 2

7:00 am - 8:55 am

ONT

MAD

16h 55m

2 stops

12:55 am - 11:31 am

MAD

ONT

19h 36m

2 stops

$528American Airlines

Tue, Feb 24 - Mon, Mar 2

6:00 am - 8:45 am

ONT

FRA

17h 45m

1 stop

9:20 am - 6:24 pm

FRA

ONT

18h 04m

2 stops

$654American Airlines

Fri, Apr 17 - Wed, May 6

7:30 am - 8:45 am

ONT

FRA

16h 15m

1 stop

10:55 am - 11:46 pm

FRA

ONT

21h 51m

1 stop

$786Iberia

Tue, Apr 7 - Sun, Apr 19

Iberia flights from Ontario to Europe

Our best Iberia deals on Ontario to Europe flight tickets

Iberia

Feb 24

ONT7:00 amOntario

14h 15m

1 stop

MAD6:15 amMadrid Barajas

Mar 2

MAD12:55 amMadrid Barajas

18h 11m

1 stop

ONT10:06 amOntario

$524

Iberia

Feb 22

ONT6:00 amOntario

15h 15m

1 stop

MAD6:15 amMadrid Barajas

Mar 8

MAD11:25 amMadrid Barajas

19h 05m

1 stop

ONT10:30 pmOntario

$574

Iberia

Feb 26

ONT10:56 amOntario

13h 09m

1 stop

CDG9:05 amParis Charles de Gaulle

Mar 5

CDG11:05 amParis Charles de Gaulle

21h 54m

1 stop

ONT11:59 pmOntario

$575

American Airlines flights from Ontario to Europe

Our best American Airlines deals on Ontario to Europe flight tickets

American Airlines

Feb 24

ONT7:00 amOntario

16h 55m

2 stops

MAD8:55 amMadrid Barajas

Mar 2

MAD12:55 amMadrid Barajas

19h 36m

2 stops

ONT11:31 amOntario

$528

American Airlines

Feb 26

ONT10:56 amOntario

13h 09m

1 stop

CDG9:05 amParis Charles de Gaulle

Mar 11

CDG11:05 amParis Charles de Gaulle

15h 37m

1 stop

ONT6:42 pmOntario

$567

American Airlines

Feb 26

ONT10:56 amOntario

13h 09m

1 stop

CDG9:05 amParis Charles de Gaulle

Mar 11

CDG11:05 amParis Charles de Gaulle

15h 37m

1 stop

ONT6:42 pmOntario

$568

Fly from

Fly to

Route

Depart

Return

Price

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 2/25

5:02 pm-1:05 am

2 stops22h 03m

Athens Eleftherios V.

Wed 3/4

8:20 pm-10:07 pm

2 stops35h 47m

$491

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 2/25

2:39 pm-1:05 am

2 stops24h 26m

Athens Eleftherios V.

Wed 3/4

1:30 pm-10:07 pm

2 stops42h 37m

$492

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sat 4/11

10:25 pm-12:15 pm

1 stop28h 50m

Madrid Barajas

Mon 4/20

12:45 pm-9:00 pm

1 stop17h 15m

$497

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 3/2

6:37 pm-1:40 am

2 stops21h 03m

Athens Eleftherios V.

Fri 3/13

6:05 am-10:57 pm

2 stops25h 52m

$503

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 2/18

5:00 am-8:00 am

2 stops18h 00m

Madrid Barajas

Wed 3/11

12:40 pm-10:18 pm

2 stops41h 38m

$507

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/25

7:30 am-10:45 pm

2 stops30h 15m

Rome Fiumicino

Tue 3/3

6:10 am-10:37 pm

2 stops25h 27m

$514

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 2/24

7:00 am-6:15 am

1 stop14h 15m

Madrid Barajas

Mon 3/2

12:55 am-10:06 am

1 stop18h 11m

$524

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 2/24

7:00 am-8:55 am

2 stops16h 55m

Madrid Barajas

Mon 3/2

12:55 am-11:31 am

2 stops19h 36m

$528

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Fri 4/17

6:00 am-8:45 am

1 stop17h 45m

Frankfurt am Main

Wed 5/6

9:20 am-6:24 pm

2 stops18h 04m

$654

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Tue 4/7

7:30 am-8:45 am

1 stop16h 15m

Frankfurt am Main

Sun 4/19

10:55 am-11:46 pm

1 stop21h 51m

$786

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 February. Flight prices, which tend to average around $654, 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 February, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $679.

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 $846 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 $607 on momondo.

Can stopping save me money on Ontario to Europe flights?

You could potentially save up to 27% 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 13m
Direct flights	None

The fastest flight from Ontario to Europe takes 12h 13m

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 January 2026.
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
American Airlines	PriceFrom $439	Free Cancellation	Rating 7.2 11,206 reviews	Search American Airlines flights
Delta	PriceFrom $444	Free Cancellation	Rating 7.9 8,127 reviews	Search Delta flights
Iberia	PriceFrom $497	Free Cancellation	Rating 7.0 3,100 reviews	Search Iberia flights
British Airways	PriceFrom $504	Free Cancellation	Rating 6.7 7,705 reviews	Search British Airways flights
United Airlines	PriceFrom $515	Free Cancellation	Rating 7.4 9,215 reviews	Search United Airlines flights
KLM	PriceFrom $580	Free Cancellation	Rating 7.7 1,443 reviews	Search KLM 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.