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

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

What airlines fly to Europe?

British Airways, Iberia and Scandinavian Airlines 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 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 April 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.

$335 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.

7:00 am - 3:30 am

ONT

IST

34h 30m

2 stops

6:00 am - 6:01 pm

IST

ONT

22h 01m

2 stops

$704Delta

Wed, Aug 12 - Fri, Aug 21

7:00 am - 1:15 pm

ONT

FCO

21h 15m

2 stops

11:30 am - 6:19 pm

FCO

ONT

39h 49m

2 stops

$711United Airlines

Tue, Aug 18 - Tue, Aug 25

6:30 am - 1:20 pm

ONT

MXP

21h 50m

1 stop

11:20 am - 12:12 pm

MXP

ONT

33h 52m

2 stops

$714United Airlines

Mon, Aug 10 - Mon, Aug 24

2:20 pm - 5:35 pm

ONT

MXP

18h 15m

2 stops

11:40 am - 9:00 pm

MXP

ONT

18h 20m

1 stop

$716Delta

Wed, Apr 15 - Wed, Apr 22

7:00 am - 4:40 pm

ONT

MXP

24h 40m

2 stops

3:20 pm - 10:31 pm

MXP

ONT

16h 11m

1 stop

$719United Airlines

Wed, Apr 15 - Wed, Apr 22

2:20 pm - 11:00 pm

ONT

MXP

23h 40m

2 stops

9:00 am - 9:00 pm

MXP

ONT

21h 00m

2 stops

$720Delta

Wed, Apr 15 - Wed, Apr 22

1:00 pm - 4:25 pm

ONT

FCO

18h 25m

2 stops

1:10 pm - 11:06 pm

FCO

ONT

18h 56m

1 stop

$723American Airlines

Tue, Aug 18 - Tue, Aug 25

11:59 pm - 12:05 pm

ONT

FCO

27h 06m

1 stop

1:10 pm - 11:06 pm

FCO

ONT

18h 56m

1 stop

$728British Airways

Mon, Aug 3 - Fri, Aug 21

11:59 pm - 9:05 am

ONT

MAD

24h 06m

1 stop

12:40 pm - 8:04 pm

MAD

ONT

16h 24m

1 stop

$769British Airways

Mon, Aug 17 - Thu, Oct 15

10:59 am - 7:55 am

ONT

LHR

12h 56m

1 stop

11:30 am - 11:46 pm

LHR

ONT

20h 16m

2 stops

$889Iberia

Wed, Apr 29 - Wed, May 6

British Airways flights from Ontario to Europe

Our best British Airways deals on Ontario to Europe flight tickets

British Airways

Aug 12

ONT10:25 amOntario

16h 40m

1 stop

FCO12:05 pmRome Fiumicino

Aug 25

FCO1:30 pmRome Fiumicino

16h 58m

1 stop

ONT9:28 pmOntario

$722

British Airways

Aug 3

ONT11:59 pmOntario

27h 06m

1 stop

FCO12:05 pmRome Fiumicino

Aug 21

FCO1:10 pmRome Fiumicino

18h 56m

1 stop

ONT11:06 pmOntario

$728

British Airways

Apr 6

ONT7:00 amOntario

20h 05m

1 stop

FCO12:05 pmRome Fiumicino

Apr 23

FCO1:10 pmRome Fiumicino

19h 36m

1 stop

ONT11:46 pmOntario

$752

Iberia flights from Ontario to Europe

Our best Iberia deals on Ontario to Europe flight tickets

Iberia

Aug 26

ONT12:35 pmOntario

14h 30m

1 stop

FCO12:05 pmRome Fiumicino

Sep 9

FCO1:10 pmRome Fiumicino

16h 58m

1 stop

ONT9:08 pmOntario

$798

Iberia

Apr 9

ONT10:59 amOntario

16h 06m

1 stop

FCO12:05 pmRome Fiumicino

Apr 23

FCO1:10 pmRome Fiumicino

18h 26m

1 stop

ONT10:36 pmOntario

$825

Iberia

Apr 2

ONT2:39 pmOntario

36h 26m

1 stop

FCO12:05 pmRome Fiumicino

Apr 16

FCO1:10 pmRome Fiumicino

18h 26m

1 stop

ONT10:36 pmOntario

$838

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 8/12

7:00 am-3:30 am

2 stops34h 30m

Istanbul

Fri 8/21

6:00 am-6:01 pm

2 stops22h 01m

$704

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/18

7:00 am-1:15 pm

2 stops21h 15m

Rome Fiumicino

Tue 8/25

11:30 am-6:19 pm

2 stops39h 49m

$711

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Mon 8/10

6:30 am-1:20 pm

1 stop21h 50m

Milan Malpensa

Mon 8/24

11:20 am-12:12 pm

2 stops33h 52m

$714

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 4/15

2:20 pm-5:35 pm

2 stops18h 15m

Milan Malpensa

Wed 4/22

11:40 am-9:00 pm

1 stop18h 20m

$716

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 4/15

7:00 am-4:40 pm

2 stops24h 40m

Milan Malpensa

Wed 4/22

3:20 pm-10:31 pm

1 stop16h 11m

$719

OntarioMilan

ONT - MXP

ONTMXP

Ontario

Wed 4/15

2:20 pm-11:00 pm

2 stops23h 40m

Milan Malpensa

Wed 4/22

9:00 am-9:00 pm

2 stops21h 00m

$720

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/18

1:00 pm-4:25 pm

2 stops18h 25m

Rome Fiumicino

Tue 8/25

1:10 pm-11:06 pm

1 stop18h 56m

$723

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/3

11:59 pm-12:05 pm

1 stop27h 06m

Rome Fiumicino

Fri 8/21

1:10 pm-11:06 pm

1 stop18h 56m

$728

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 8/17

11:59 pm-9:05 am

1 stop24h 06m

Madrid Barajas

Thu 10/15

12:40 pm-8:04 pm

1 stop16h 24m

$769

Quickest round-trip

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 4/29

10:59 am-7:55 am

1 stop12h 56m

London Heathrow

Wed 5/6

11:30 am-11:46 pm

2 stops20h 16m

$889

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 50% 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 55m
Direct flights	None

The fastest flight from Ontario to Europe takes 11h 55m

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 April 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 11,546 reviews	Search American Airlines flights
Iberia	PriceFrom $497	Free Cancellation	Rating 7.0 3,162 reviews	Search Iberia flights
British Airways	PriceFrom $504	Free Cancellation	Rating 6.7 7,841 reviews	Search British Airways flights
United Airlines	PriceFrom $515	Free Cancellation	Rating 7.4 9,533 reviews	Search United Airlines flights
Delta	PriceFrom $557	Free Cancellation	Rating 7.9 8,365 reviews	Search Delta flights
KLM	PriceFrom $580	Free Cancellation	Rating 7.8 1,481 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.