What airlines fly to Europe?

British Airways, Iberia and Delta are the top three most popular airlines that fly to Europe from Ontario according to our data. British Airways 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 34 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 British Airways 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 February 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.

8:00 am - 8:10 am

ONT

LIS

16h 10m

2 stops

11:20 am - 10:18 pm

LIS

ONT

41h 58m

2 stops

$492United Airlines

Tue, Feb 24 - Thu, Mar 12

1:50 pm - 7:45 am

ONT

FCO

32h 55m

2 stops

12:15 pm - 10:18 pm

FCO

ONT

42h 03m

2 stops

$493United Airlines

Sun, Mar 1 - Wed, Mar 11

2:39 pm - 4:55 pm

ONT

FCO

17h 16m

2 stops

11:35 am - 10:29 pm

FCO

ONT

19h 54m

1 stop

$505American Airlines

Mon, Feb 23 - Fri, Mar 6

12:19 pm - 11:05 pm

ONT

LIS

26h 46m

2 stops

6:55 pm - 4:22 pm

LIS

ONT

29h 27m

2 stops

$509British Airways

Sun, Apr 19 - Fri, May 1

12:19 pm - 11:10 pm

ONT

LIS

26h 51m

2 stops

7:10 am - 9:59 pm

LIS

ONT

22h 49m

2 stops

$510British Airways

Mon, Apr 20 - Mon, Apr 27

11:59 pm - 5:45 am

ONT

MAD

21h 46m

1 stop

3:55 pm - 11:59 pm

MAD

ONT

17h 04m

1 stop

$519American Airlines

Mon, Mar 16 - Wed, Apr 1

6:00 am - 6:15 am

ONT

MAD

15h 15m

1 stop

12:55 am - 10:06 am

MAD

ONT

18h 11m

1 stop

$525Iberia

Tue, Feb 24 - Mon, Mar 2

2:08 pm - 2:25 pm

ONT

LHR

16h 17m

1 stop

11:30 am - 11:46 pm

LHR

ONT

20h 16m

2 stops

$644Iberia

Wed, Apr 22 - Wed, Apr 29

11:53 am - 3:35 pm

ONT

LHR

19h 42m

1 stop

6:30 am - 5:15 pm

LHR

ONT

18h 45m

2 stops

$648Delta

Wed, Apr 15 - Tue, May 5

11:53 am - 12:10 pm

ONT

LHR

16h 17m

1 stop

9:55 am - 10:37 pm

LHR

ONT

20h 42m

2 stops

$649Delta

Wed, Apr 15 - Tue, May 5

British Airways flights from Ontario to Europe

Our best British Airways deals on Ontario to Europe flight tickets

British Airways

Apr 19

ONT12:19 pmOntario

26h 46m

2 stops

LIS11:05 pmLisbon Humberto Delgado

May 1

LIS6:55 pmLisbon Humberto Delgado

29h 27m

2 stops

ONT4:22 pmOntario

$509

British Airways

Apr 20

ONT12:19 pmOntario

26h 51m

2 stops

LIS11:10 pmLisbon Humberto Delgado

Apr 27

LIS7:10 amLisbon Humberto Delgado

22h 49m

2 stops

ONT9:59 pmOntario

$510

British Airways

Apr 12

ONT12:19 pmOntario

36h 21m

2 stops

MAD9:40 amMadrid Barajas

Apr 21

MAD10:25 amMadrid Barajas

19h 02m

1 stop

ONT8:27 pmOntario

$512

United Airlines flights from Ontario to Europe

Our best United Airlines deals on Ontario to Europe flight tickets

United Airlines

Feb 24

ONT8:00 amOntario

16h 10m

2 stops

LIS8:10 amLisbon Humberto Delgado

Mar 12

LIS11:20 amLisbon Humberto Delgado

41h 58m

2 stops

ONT10:18 pmOntario

$492

United Airlines

Mar 1

ONT1:50 pmOntario

32h 55m

2 stops

FCO7:45 amRome Fiumicino

Mar 11

FCO12:15 pmRome Fiumicino

42h 03m

2 stops

ONT10:18 pmOntario

$493

United Airlines

Apr 14

ONT6:05 amOntario

18h 15m

2 stops

LIS8:20 amLisbon Humberto Delgado

Apr 21

LIS6:15 amLisbon Humberto Delgado

24h 11m

2 stops

ONT10:26 pmOntario

$502

Fly from

Fly to

Route

Depart

Return

Price

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 2/24

8:00 am-8:10 am

2 stops16h 10m

Lisbon Humberto Delgado

Thu 3/12

11:20 am-10:18 pm

2 stops41h 58m

$492

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 3/1

1:50 pm-7:45 am

2 stops32h 55m

Rome Fiumicino

Wed 3/11

12:15 pm-10:18 pm

2 stops42h 03m

$493

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 2/23

2:39 pm-4:55 pm

2 stops17h 16m

Rome Fiumicino

Fri 3/6

11:35 am-10:29 pm

1 stop19h 54m

$505

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sun 4/19

12:19 pm-11:05 pm

2 stops26h 46m

Lisbon Humberto Delgado

Fri 5/1

6:55 pm-4:22 pm

2 stops29h 27m

$509

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Mon 4/20

12:19 pm-11:10 pm

2 stops26h 51m

Lisbon Humberto Delgado

Mon 4/27

7:10 am-9:59 pm

2 stops22h 49m

$510

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 3/16

11:59 pm-5:45 am

1 stop21h 46m

Madrid Barajas

Wed 4/1

3:55 pm-11:59 pm

1 stop17h 04m

$519

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 2/24

6:00 am-6:15 am

1 stop15h 15m

Madrid Barajas

Mon 3/2

12:55 am-10:06 am

1 stop18h 11m

$525

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 4/22

2:08 pm-2:25 pm

1 stop16h 17m

London Heathrow

Wed 4/29

11:30 am-11:46 pm

2 stops20h 16m

$644

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 4/15

11:53 am-3:35 pm

1 stop19h 42m

London Heathrow

Tue 5/5

6:30 am-5:15 pm

2 stops18h 45m

$648

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 4/15

11:53 am-12:10 pm

1 stop16h 17m

London Heathrow

Tue 5/5

9:55 am-10:37 pm

2 stops20h 42m

$649

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 March is also cheap. Prices for this month can be found on momondo for an average of $683.

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 February 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 11,289 reviews	Search American Airlines flights
Delta	PriceFrom $444	Free Cancellation	Rating 7.9 8,200 reviews	Search Delta flights
Iberia	PriceFrom $497	Free Cancellation	Rating 7.0 3,115 reviews	Search Iberia flights
British Airways	PriceFrom $504	Free Cancellation	Rating 6.7 7,739 reviews	Search British Airways flights
United Airlines	PriceFrom $515	Free Cancellation	Rating 7.4 9,292 reviews	Search United Airlines flights
KLM	PriceFrom $580	Free Cancellation	Rating 7.7 1,454 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.