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

British Airways, KLM, and American Airlines are the most popular carriers operating from Ontario to Europe

What airlines fly to Europe?

Iberia, British Airways and Scandinavian Airlines 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 30% of people opting to fly with this airline when traveling to Europe. Keep in mind that there are 36 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 May 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.

$336 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.

7:20 am - 10:45 am

ONT

FCO

19h 25m

1 stop

11:00 am - 11:57 pm

FCO

ONT

21h 57m

1 stop

$727Iberia

화, 10월 27 - 화, 11월 10

6:20 am - 10:10 am

ONT

FCO

18h 50m

1 stop

6:30 am - 5:16 pm

FCO

ONT

19h 46m

2 stops

$728KLM

수, 8월 5 - 화, 8월 25

9:40 am - 11:00 am

ONT

FCO

16h 20m

2 stops

9:00 am - 7:53 pm

FCO

ONT

19h 53m

2 stops

$732Multiple Airlines

수, 8월 5 - 화, 8월 25

10:25 am - 9:05 am

ONT

MAD

13h 40m

1 stop

12:40 pm - 6:57 pm

MAD

ONT

15h 17m

1 stop

$749British Airways

화, 7월 28 - 금, 9월 11

7:00 am - 9:05 am

ONT

MAD

17h 05m

1 stop

1:00 pm - 7:55 pm

MAD

ONT

15h 55m

1 stop

$759British Airways

화, 8월 4 - 목, 9월 10

12:00 pm - 12:15 pm

ONT

MAD

15h 15m

1 stop

9:50 am - 6:18 pm

MAD

ONT

17h 28m

1 stop

$764Delta

일, 10월 11 - 목, 10월 15

1:31 pm - 2:25 pm

ONT

MAD

15h 54m

2 stops

12:30 pm - 9:37 pm

MAD

ONT

18h 07m

2 stops

$768American Airlines

일, 9월 20 - 목, 9월 24

1:18 pm - 11:45 am

ONT

FCO

37h 27m

2 stops

11:30 am - 6:11 pm

FCO

ONT

39h 41m

2 stops

$771United Airlines

토, 9월 5 - 화, 9월 15

10:59 pm - 9:55 am

ONT

MAD

25h 56m

2 stops

1:05 pm - 11:27 am

MAD

ONT

30h 22m

2 stops

$771Delta

월, 10월 19 - 수, 10월 28

1:44 pm - 1:40 pm

ONT

FCO

14h 56m

1 stop

6:50 am - 6:11 pm

FCO

ONT

20h 21m

2 stops

$776United Airlines

목, 8월 13 - 화, 8월 25

British Airways flights from Ontario to Europe

Our best British Airways deals on Ontario to Europe flight tickets

British Airways

Jul 28

ONT10:25 amOntario

13h 40m

1 stop

MAD9:05 amMadrid Barajas

Sep 11

MAD12:40 pmMadrid Barajas

15h 17m

1 stop

ONT6:57 pmOntario

$749

British Airways

Aug 4

ONT7:00 amOntario

17h 05m

1 stop

MAD9:05 amMadrid Barajas

Sep 10

MAD1:00 pmMadrid Barajas

15h 55m

1 stop

ONT7:55 pmOntario

$759

British Airways

Oct 13

ONT4:59 pmOntario

20h 11m

2 stops

MAD10:10 pmMadrid Barajas

Nov 13

MAD12:40 pmMadrid Barajas

17h 31m

1 stop

ONT9:11 pmOntario

$761

Delta flights from Ontario to Europe

Our best Delta deals on Ontario to Europe flight tickets

Delta

Oct 11

ONT12:00 pmOntario

15h 15m

1 stop

MAD12:15 pmMadrid Barajas

Oct 15

MAD9:50 amMadrid Barajas

17h 28m

1 stop

ONT6:18 pmOntario

$764

Delta

Oct 19

ONT10:59 pmOntario

25h 56m

2 stops

MAD9:55 amMadrid Barajas

Oct 28

MAD1:05 pmMadrid Barajas

30h 22m

2 stops

ONT11:27 amOntario

$771

Delta

Sep 13

ONT10:59 pmOntario

23h 56m

2 stops

FCO7:55 amRome Fiumicino

Oct 6

FCO6:30 amRome Fiumicino

25h 13m

2 stops

ONT10:43 pmOntario

$792

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

화 10/27

7:20 am-10:45 am

1 stop19h 25m

Rome Fiumicino

화 11/10

11:00 am-11:57 pm

1 stop21h 57m

$727

OntarioRome

ONT - FCO

ONTFCO

Ontario

수 8/5

6:20 am-10:10 am

1 stop18h 50m

Rome Fiumicino

화 8/25

6:30 am-5:16 pm

2 stops19h 46m

$728

OntarioRome

ONT - FCO

ONTFCO

Ontario

수 8/5

9:40 am-11:00 am

2 stops16h 20m

Rome Fiumicino

화 8/25

9:00 am-7:53 pm

2 stops19h 53m

$732

Quickest round-trip

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

화 7/28

10:25 am-9:05 am

1 stop13h 40m

Madrid Barajas

금 9/11

12:40 pm-6:57 pm

1 stop15h 17m

$749

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

화 8/4

7:00 am-9:05 am

1 stop17h 05m

Madrid Barajas

목 9/10

1:00 pm-7:55 pm

1 stop15h 55m

$759

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

일 10/11

12:00 pm-12:15 pm

1 stop15h 15m

Madrid Barajas

목 10/15

9:50 am-6:18 pm

1 stop17h 28m

$764

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

일 9/20

1:31 pm-2:25 pm

2 stops15h 54m

Madrid Barajas

목 9/24

12:30 pm-9:37 pm

2 stops18h 07m

$768

OntarioRome

ONT - FCO

ONTFCO

Ontario

토 9/5

1:18 pm-11:45 am

2 stops37h 27m

Rome Fiumicino

화 9/15

11:30 am-6:11 pm

2 stops39h 41m

$771

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

월 10/19

10:59 pm-9:55 am

2 stops25h 56m

Madrid Barajas

수 10/28

1:05 pm-11:27 am

2 stops30h 22m

$771

OntarioRome

ONT - FCO

ONTFCO

Ontario

목 8/13

1:44 pm-1:40 pm

1 stop14h 56m

Rome Fiumicino

화 8/25

6:50 am-6:11 pm

2 stops20h 21m

$776

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 September. Flight prices, which tend to average around $251, 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 September, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $282.

Can stopping save me money on Ontario to Europe flights?

You could potentially save up to 47% 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 13m
Direct flights	None

The fastest flight from Ontario to Europe takes 11h 13m

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

Search flight deals

Frequently asked questions about flying 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 May 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
Iberia	PriceFrom $497	Free Cancellation	Rating 7.0 3,208 reviews	Search Iberia flights
British Airways	PriceFrom $504	Free Cancellation	Rating 6.7 7,943 reviews	Search British Airways flights
United Airlines	PriceFrom $515	Free Cancellation	Rating 7.4 9,680 reviews	Search United Airlines flights
Delta	PriceFrom $557	Free Cancellation	Rating 7.9 8,459 reviews	Search Delta flights
KLM	PriceFrom $580	Free Cancellation	Rating 7.8 1,511 reviews	Search KLM flights
American Airlines	PriceFrom $620	Free Cancellation	Rating 7.1 11,670 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.