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

United Airlines, Delta, and British Airways 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 31% of people opting to fly with this airline when traveling to Europe. Keep in mind that there are 35 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 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.

$285 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.

1:44 pm - 1:20 pm

ONT

FCO

14h 36m

1 stop

1:20 pm - 10:58 pm

FCO

ONT

18h 38m

2 stops

$610Lufthansa

Wed, Aug 12 - Wed, Aug 26

4:20 pm - 1:20 pm

ONT

FCO

36h 00m

1 stop

10:00 am - 10:58 pm

FCO

ONT

21h 58m

2 stops

$626United Airlines

Sat, Aug 8 - Wed, Aug 19

7:00 am - 7:35 am

ONT

FCO

15h 35m

1 stop

9:45 am - 6:01 pm

FCO

ONT

17h 16m

1 stop

$627KLM

Sun, Aug 16 - Tue, Aug 25

10:59 pm - 11:25 am

ONT

FCO

27h 26m

2 stops

12:45 pm - 4:14 pm

FCO

ONT

36h 29m

2 stops

$631Delta

Sat, Aug 8 - Wed, Aug 19

11:59 pm - 9:05 am

ONT

MAD

24h 06m

1 stop

10:25 am - 8:27 pm

MAD

ONT

19h 02m

1 stop

$640British Airways

Tue, Apr 14 - Tue, Apr 21

10:59 pm - 10:05 am

ONT

FCO

50h 06m

2 stops

6:05 am - 5:16 pm

FCO

ONT

20h 11m

2 stops

$644Delta

Fri, Aug 7 - Thu, Aug 20

11:59 pm - 9:05 am

ONT

MAD

24h 06m

1 stop

3:55 pm - 11:46 pm

MAD

ONT

16h 51m

1 stop

$675British Airways

Tue, Apr 7 - Wed, Apr 15

2:39 pm - 12:10 pm

ONT

LHR

13h 31m

1 stop

10:50 am - 11:46 pm

LHR

ONT

20h 56m

2 stops

$789Iberia

Mon, Apr 6 - Wed, Apr 22

2:08 pm - 12:10 pm

ONT

LHR

14h 02m

1 stop

11:30 am - 11:46 pm

LHR

ONT

20h 16m

2 stops

$790Iberia

Wed, May 6 - Wed, May 13

11:59 pm - 7:35 am

ONT

BCN

22h 36m

1 stop

10:30 am - 8:54 pm

BCN

ONT

19h 24m

2 stops

$948American Airlines

Sun, Apr 12 - Tue, Apr 28

British Airways flights from Ontario to Europe

Our best British Airways deals on Ontario to Europe flight tickets

British Airways

Apr 14

ONT11:59 pmOntario

24h 06m

1 stop

MAD9:05 amMadrid Barajas

Apr 21

MAD10:25 amMadrid Barajas

19h 02m

1 stop

ONT8:27 pmOntario

$640

British Airways

Apr 7

ONT11:59 pmOntario

24h 06m

1 stop

MAD9:05 amMadrid Barajas

Apr 15

MAD3:55 pmMadrid Barajas

16h 51m

1 stop

ONT11:46 pmOntario

$675

British Airways

Apr 14

ONT4:52 pmOntario

31h 48m

2 stops

MAD9:40 amMadrid Barajas

Apr 21

MAD10:25 amMadrid Barajas

19h 02m

1 stop

ONT8:27 pmOntario

$679

KLM flights from Ontario to Europe

Our best KLM deals on Ontario to Europe flight tickets

KLM

Aug 16

ONT7:00 amOntario

15h 35m

1 stop

FCO7:35 amRome Fiumicino

Aug 25

FCO9:45 amRome Fiumicino

17h 16m

1 stop

ONT6:01 pmOntario

$627

KLM

Apr 14

ONT7:05 amOntario

15h 30m

1 stop

FCO7:35 amRome Fiumicino

Apr 21

FCO9:45 amRome Fiumicino

17h 48m

1 stop

ONT6:33 pmOntario

$648

KLM

Apr 8

ONT5:09 pmOntario

17h 26m

2 stops

MAD7:35 pmMadrid Barajas

Apr 23

MAD12:45 pmMadrid Barajas

17h 15m

1 stop

ONT9:00 pmOntario

$653

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 8/12

1:44 pm-1:20 pm

1 stop14h 36m

Rome Fiumicino

Wed 8/26

1:20 pm-10:58 pm

2 stops18h 38m

$610

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 8/8

4:20 pm-1:20 pm

1 stop36h 00m

Rome Fiumicino

Wed 8/19

10:00 am-10:58 pm

2 stops21h 58m

$626

Quickest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 8/16

7:00 am-7:35 am

1 stop15h 35m

Rome Fiumicino

Tue 8/25

9:45 am-6:01 pm

1 stop17h 16m

$627

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 8/8

10:59 pm-11:25 am

2 stops27h 26m

Rome Fiumicino

Wed 8/19

12:45 pm-4:14 pm

2 stops36h 29m

$631

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 4/14

11:59 pm-9:05 am

1 stop24h 06m

Madrid Barajas

Tue 4/21

10:25 am-8:27 pm

1 stop19h 02m

$640

OntarioRome

ONT - FCO

ONTFCO

Ontario

Fri 8/7

10:59 pm-10:05 am

2 stops50h 06m

Rome Fiumicino

Thu 8/20

6:05 am-5:16 pm

2 stops20h 11m

$644

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 4/7

11:59 pm-9:05 am

1 stop24h 06m

Madrid Barajas

Wed 4/15

3:55 pm-11:46 pm

1 stop16h 51m

$675

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 4/6

2:39 pm-12:10 pm

1 stop13h 31m

London Heathrow

Wed 4/22

10:50 am-11:46 pm

2 stops20h 56m

$789

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 5/6

2:08 pm-12:10 pm

1 stop14h 02m

London Heathrow

Wed 5/13

11:30 am-11:46 pm

2 stops20h 16m

$790

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 4/12

11:59 pm-7:35 am

1 stop22h 36m

Barcelona-El Prat

Tue 4/28

10:30 am-8:54 pm

2 stops19h 24m

$948

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 11,466 reviews	Search American Airlines flights
Delta	PriceFrom $444	Free Cancellation	Rating 7.9 8,288 reviews	Search Delta flights
Iberia	PriceFrom $497	Free Cancellation	Rating 7.0 3,137 reviews	Search Iberia flights
British Airways	PriceFrom $504	Free Cancellation	Rating 6.7 7,797 reviews	Search British Airways flights
United Airlines	PriceFrom $515	Free Cancellation	Rating 7.4 9,431 reviews	Search United Airlines flights
KLM	PriceFrom $580	Free Cancellation	Rating 7.8 1,472 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.