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

British Airways, United Airlines, and Delta 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 33% 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 7 as of December 2025.

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.

$225 Cheap Flights from Ontario to Europe in 2025/26

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Find the cheapest flights from Ontario to Europe

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:00 am - 9:55 am

ONT

MXP

19h 55m2 stops

12:05 pm - 12:48 pm

MXP

ONT

32h 43m3 stops

$481Multiple Airlines

Wed, Mar 4 - Wed, Mar 18

3:09 pm - 1:25 am

ONT

ATH

24h 16m2 stops

4:10 pm - 10:13 pm

ATH

ONT

40h 03m2 stops

$490British Airways

Thu, Jan 22 - Thu, Feb 5

1:45 pm - 7:45 am

ONT

FCO

57h 00m2 stops

1:05 pm - 12:48 pm

FCO

ONT

56h 43m2 stops

$495United Airlines

Wed, Feb 25 - Tue, Mar 3

6:39 pm - 9:55 am

ONT

MXP

30h 16m2 stops

1:05 pm - 8:50 pm

MXP

ONT

40h 45m2 stops

$497United Airlines

Fri, Feb 6 - Tue, Feb 17

7:16 am - 6:50 pm

ONT

ATH

25h 34m2 stops

7:45 am - 10:48 pm

ATH

ONT

25h 03m2 stops

$504American Airlines

Thu, Jan 22 - Mon, Jan 26

7:16 am - 6:50 pm

ONT

ATH

25h 34m2 stops

7:45 am - 10:48 pm

ATH

ONT

25h 03m3 stops

$509American Airlines

Thu, Jan 22 - Mon, Jan 26

6:00 am - 11:45 am

ONT

FCO

20h 45m2 stops

6:10 am - 9:05 pm

FCO

ONT

23h 55m2 stops

$512Delta

Thu, Jan 22 - Fri, Feb 6

10:30 pm - 10:30 am

ONT

FCO

27h 00m1 stop

6:10 am - 9:05 pm

FCO

ONT

23h 55m2 stops

$513Delta

Sun, Jan 18 - Thu, Feb 5

10:58 am - 5:10 pm

ONT

BCN

21h 12m2 stops

9:45 am - 10:48 pm

BCN

ONT

22h 03m2 stops

$614Iberia

Wed, Feb 4 - Wed, Feb 11

7:16 am - 10:00 am

ONT

LHR

18h 44m1 stop

6:00 am - 10:49 pm

LHR

ONT

24h 49m2 stops

$626Iberia

Wed, Feb 11 - Tue, Feb 17

British Airways flights from Ontario to Europe

Our best British Airways deals on Ontario to Europe flight tickets

British Airways

Jan 22

ONT3:09 pmOntario

24h 16m

2 stops

ATH1:25 amAthens Eleftherios V.

Jan 25

ATH8:00 amAthens Eleftherios V.

24h 13m

2 stops

ONT10:13 pmOntario

$490

Find similar

British Airways

Jan 13

ONT3:09 pmOntario

19h 36m

2 stops

MXP7:45 pmMilan Malpensa

Jan 27

MXP11:45 amMilan Malpensa

20h 03m

2 stops

ONT10:48 pmOntario

$492

Find similar

British Airways

Jan 12

ONT3:09 pmOntario

19h 41m

2 stops

MXP7:50 pmMilan Malpensa

Jan 19

MXP8:50 pmMilan Malpensa

30h 55m

2 stops

ONT6:45 pmOntario

$504

Find similar

United Airlines flights from Ontario to Europe

Our best United Airlines deals on Ontario to Europe flight tickets

United Airlines

Feb 25

ONT1:45 pmOntario

57h 00m

2 stops

FCO7:45 amRome Fiumicino

Mar 3

FCO1:05 pmRome Fiumicino

56h 43m

2 stops

ONT12:48 pmOntario

$495

Find similar

United Airlines

Feb 6

ONT6:39 pmOntario

30h 16m

2 stops

MXP9:55 amMilan Malpensa

Feb 17

MXP1:05 pmMilan Malpensa

40h 45m

2 stops

ONT8:50 pmOntario

$497

Find similar

United Airlines

Jan 20

ONT1:24 pmOntario

48h 36m

2 stops

FCO11:00 pmRome Fiumicino

Feb 5

FCO12:50 pmRome Fiumicino

41h 08m

2 stops

ONT8:58 pmOntario

$498

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 3/4

5:00 am-9:55 am

2 stops19h 55m

Milan Malpensa

Wed 3/18

12:05 pm-12:48 pm

3 stops32h 43m

$481

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 1/22

3:09 pm-1:25 am

2 stops24h 16m

Athens Eleftherios V.

Thu 2/5

4:10 pm-10:13 pm

2 stops40h 03m

$490

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/25

1:45 pm-7:45 am

2 stops57h 00m

Rome Fiumicino

Tue 3/3

1:05 pm-12:48 pm

2 stops56h 43m

$495

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Fri 2/6

6:39 pm-9:55 am

2 stops30h 16m

Milan Malpensa

Tue 2/17

1:05 pm-8:50 pm

2 stops40h 45m

$497

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 1/22

7:16 am-6:50 pm

2 stops25h 34m

Athens Eleftherios V.

Mon 1/26

7:45 am-10:48 pm

2 stops25h 03m

$504

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 1/22

7:16 am-6:50 pm

2 stops25h 34m

Athens Eleftherios V.

Mon 1/26

7:45 am-10:48 pm

3 stops25h 03m

$509

OntarioRome

ONT - FCO

ONTFCO

Ontario

Thu 1/22

6:00 am-11:45 am

2 stops20h 45m

Rome Fiumicino

Fri 2/6

6:10 am-9:05 pm

2 stops23h 55m

$512

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 1/18

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Thu 2/5

6:10 am-9:05 pm

2 stops23h 55m

$513

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 2/4

10:58 am-5:10 pm

2 stops21h 12m

Barcelona-El Prat

Wed 2/11

9:45 am-10:48 pm

2 stops22h 03m

$614

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 2/11

7:16 am-10:00 am

1 stop18h 44m

London Heathrow

Tue 2/17

6:00 am-10:49 pm

2 stops24h 49m

$626

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 $657, 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.

What is the cheapest day to depart on your flight to Europe?

The cheapest day to depart from Ontario to Europe is on a Wednesday. Travelers who choose to depart for Europe on a Wednesday will often find tickets for as low as $668. Flights from Ontario to Europe on a Saturday will generally be more expensive and average around $1,112. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Europe?

According to our data, the cheapest time of day to fly to Europe is in the evening. momondo users have found flights departing from Ontario to Europe in the evening for as low as $662. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the morning because they tend to be around $871. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $828 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 $606 on momondo.

Can stopping save me money on Ontario to Europe flights?

You could potentially save up to 46% 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 31m
Direct flights	None

The fastest flight from Ontario to Europe takes 11h 31m

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 7 as of December 2025.
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
Delta	PriceFrom $444	Free Cancellation	Rating 7.9 8,014 reviews	Search Delta flights
Virgin Atlantic	PriceFrom $469	Free Cancellation	Rating 7.5 677 reviews	Search Virgin Atlantic flights
Iberia	PriceFrom $497	Free Cancellation	Rating 7.0 3,056 reviews	Search Iberia flights
British Airways	PriceFrom $517	Free Cancellation	Rating 6.7 7,605 reviews	Search British Airways flights
United Airlines	PriceFrom $568	Free Cancellation	Rating 7.4 9,103 reviews	Search United Airlines flights
KLM	PriceFrom $580	Free Cancellation	Rating 7.7 1,434 reviews	Search KLM flights
American Airlines	PriceFrom $595	Free Cancellation	Rating 7.2 11,053 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.