What airlines fly to Europe?

United Airlines, British Airways and Delta are the top three most popular airlines that fly to Europe from Ontario according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Europe. Keep in mind that there are 9 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?

United Airlines, Alaska Airlines, and KLM 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 March 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.

$236 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.

2:08 pm - 5:30 pm

ONT

MAD

18h 22m

2 stops

10:25 am - 9:07 pm

MAD

ONT

19h 42m

1 stop

$542British Airways

Tue, Apr 14 - Fri, Apr 24

2:08 pm - 5:30 pm

ONT

MAD

18h 22m

2 stops

12:10 pm - 9:59 pm

MAD

ONT

18h 49m

2 stops

$553British Airways

Tue, Apr 14 - Fri, Apr 24

6:49 pm - 10:00 pm

ONT

FCO

42h 11m

2 stops

7:10 am - 10:35 pm

FCO

ONT

24h 25m

2 stops

$565United Airlines

Sat, Apr 18 - Thu, Apr 30

1:18 pm - 12:20 pm

ONT

FCO

14h 02m

1 stop

3:40 pm - 10:58 pm

FCO

ONT

16h 18m

1 stop

$577United Airlines

Wed, Aug 5 - Wed, Aug 19

10:25 pm - 7:35 am

ONT

FCO

24h 10m

1 stop

6:30 am - 5:15 pm

FCO

ONT

19h 45m

2 stops

$582KLM

Sat, Apr 4 - Wed, Apr 15

10:25 pm - 7:35 am

ONT

FCO

24h 10m

1 stop

6:30 am - 11:44 pm

FCO

ONT

26h 14m

2 stops

$583Delta

Sat, Apr 11 - Thu, Apr 23

12:00 pm - 12:15 pm

ONT

MAD

15h 15m

1 stop

9:50 am - 6:01 pm

MAD

ONT

17h 11m

1 stop

$595Delta

Tue, Aug 18 - Wed, Sep 9

12:49 pm - 12:15 pm

ONT

MAD

14h 26m

1 stop

7:05 am - 4:25 pm

MAD

ONT

18h 20m

2 stops

$596KLM

Wed, Apr 22 - Tue, Apr 28

2:08 pm - 5:30 pm

ONT

CDG

18h 22m

2 stops

2:05 pm - 11:46 pm

CDG

ONT

18h 41m

2 stops

$787American Airlines

Wed, Apr 8 - Wed, Apr 15

7:30 am - 8:45 am

ONT

FRA

16h 15m

1 stop

10:55 am - 6:37 pm

FRA

ONT

16h 42m

1 stop

$927American Airlines

Thu, Apr 23 - Thu, May 7

British Airways flights from Ontario to Europe

Our best British Airways deals on Ontario to Europe flight tickets

British Airways

Apr 14

ONT2:08 pmOntario

18h 22m

2 stops

MAD5:30 pmMadrid Barajas

Apr 24

MAD10:25 amMadrid Barajas

19h 42m

1 stop

ONT9:07 pmOntario

$542

British Airways

Apr 14

ONT2:08 pmOntario

18h 22m

2 stops

MAD5:30 pmMadrid Barajas

Apr 24

MAD12:10 pmMadrid Barajas

18h 49m

2 stops

ONT9:59 pmOntario

$553

British Airways

Apr 14

ONT2:08 pmOntario

18h 22m

2 stops

MAD5:30 pmMadrid Barajas

Apr 24

MAD10:35 amMadrid Barajas

20h 24m

2 stops

ONT9:59 pmOntario

$554

Delta flights from Ontario to Europe

Our best Delta deals on Ontario to Europe flight tickets

Delta

Apr 15

ONT12:49 pmOntario

14h 26m

1 stop

MAD12:15 pmMadrid Barajas

Apr 28

MAD6:00 amMadrid Barajas

20h 15m

2 stops

ONT5:15 pmOntario

$572

Delta

Mar 15

ONT10:25 pmOntario

24h 30m

1 stop

FCO6:55 amRome Fiumicino

Apr 1

FCO9:45 amRome Fiumicino

20h 15m

1 stop

ONT9:00 pmOntario

$577

Delta

Apr 11

ONT10:25 pmOntario

24h 10m

1 stop

FCO7:35 amRome Fiumicino

Apr 23

FCO6:30 amRome Fiumicino

26h 14m

2 stops

ONT11:44 pmOntario

$583

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 4/14

2:08 pm-5:30 pm

2 stops18h 22m

Madrid Barajas

Fri 4/24

10:25 am-9:07 pm

1 stop19h 42m

$542

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 4/14

2:08 pm-5:30 pm

2 stops18h 22m

Madrid Barajas

Fri 4/24

12:10 pm-9:59 pm

2 stops18h 49m

$553

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 4/18

6:49 pm-10:00 pm

2 stops42h 11m

Rome Fiumicino

Thu 4/30

7:10 am-10:35 pm

2 stops24h 25m

$565

Quickest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 8/5

1:18 pm-12:20 pm

1 stop14h 02m

Rome Fiumicino

Wed 8/19

3:40 pm-10:58 pm

1 stop16h 18m

$577

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 4/4

10:25 pm-7:35 am

1 stop24h 10m

Rome Fiumicino

Wed 4/15

6:30 am-5:15 pm

2 stops19h 45m

$582

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 4/11

10:25 pm-7:35 am

1 stop24h 10m

Rome Fiumicino

Thu 4/23

6:30 am-11:44 pm

2 stops26h 14m

$583

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 8/18

12:00 pm-12:15 pm

1 stop15h 15m

Madrid Barajas

Wed 9/9

9:50 am-6:01 pm

1 stop17h 11m

$595

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 4/22

12:49 pm-12:15 pm

1 stop14h 26m

Madrid Barajas

Tue 4/28

7:05 am-4:25 pm

2 stops18h 20m

$596

OntarioParis

ONT - CDG

ONTCDG

Ontario

Wed 4/8

2:08 pm-5:30 pm

2 stops18h 22m

Paris Charles de Gaulle

Wed 4/15

2:05 pm-11:46 pm

2 stops18h 41m

$787

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Thu 4/23

7:30 am-8:45 am

1 stop16h 15m

Frankfurt am Main

Thu 5/7

10:55 am-6:37 pm

1 stop16h 42m

$927

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 March. Flight prices, which tend to average around $652, 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 March, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $653.

Can stopping save me money on Ontario to Europe flights?

You could potentially save up to 32% 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	11h 51m
Direct flights	None

The fastest flight from Ontario to Europe takes 11h 51m

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 March 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 7.1 11,402 reviews	Search American Airlines flights
Delta	PriceFrom $444	Free Cancellation	Rating 7.9 8,271 reviews	Search Delta flights
Iberia	PriceFrom $497	Free Cancellation	Rating 7.0 3,132 reviews	Search Iberia flights
British Airways	PriceFrom $504	Free Cancellation	Rating 6.7 7,780 reviews	Search British Airways flights
United Airlines	PriceFrom $515	Free Cancellation	Rating 7.4 9,408 reviews	Search United Airlines flights
KLM	PriceFrom $580	Free Cancellation	Rating 7.8 1,468 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.