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

Alaska Airlines, JetBlue, and KLM 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 28% 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 8 as of August 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.

$282 Cheap Flights from Ontario to Europe in 2026

Discover deals from 900+ travel sites with momondo.

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 - 7:45 am-

15h 45m

11:05 am - 11:43 pm-

21h 38m

$724Iberia

Wed, Nov 4 - Wed, Nov 11

7:00 am - 7:45 am-

15h 45m

10:35 am - 11:43 pm-

22h 08m

$735Iberia

Wed, Nov 4 - Wed, Nov 11

1:35 pm - 7:25 am-

33h 50m

6:50 am - 6:47 pm-

19h 57m

$736United Airlines

Sun, Nov 1 - Wed, Nov 4

6:37 pm - 7:25 am-

28h 48m

6:50 am - 6:47 pm-

19h 57m

$736United Airlines

Mon, Nov 9 - Thu, Nov 12

6:02 am - 1:15 pm-

22h 13m

3:15 pm - 11:04 am-

28h 49m

$736Alaska Airlines

Tue, Aug 25 - Tue, Sep 1

10:30 am - 10:45 am-

15h 15m

1:00 pm - 9:39 pm-

17h 39m

$739British Airways

Mon, Nov 16 - Fri, Nov 20

7:00 am - 9:55 am-

17h 55m

11:55 am - 8:46 pm-

17h 51m

$741Delta

Sun, Nov 15 - Wed, Dec 2

7:00 am - 9:55 am-

17h 55m

11:55 am - 8:46 pm-

17h 51m

$741Delta

Mon, Nov 16 - Wed, Dec 2

6:30 am - 9:20 am-

17h 50m

12:40 pm - 9:07 pm-

17h 27m

$761British Airways

Wed, Dec 2 - Wed, Dec 9

6:00 am - 12:20 pm-

22h 20m

2:45 pm - 11:09 am-

28h 24m

$790Alaska Airlines

Wed, Nov 25 - Wed, Dec 2

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Delta flights from Ontario to Europe

Our best Delta deals on Ontario to Europe flight tickets

Delta

Nov 15

ONT7:00 amOntario

17h 55m

1 stop

MAD9:55 amMadrid Barajas

Dec 2

MAD11:55 amMadrid Barajas

17h 51m

1 stop

ONT8:46 pmOntario

$741

Delta

Jan 12

ONT12:00 pmOntario

14h 20m

1 stop

FCO11:20 amRome Fiumicino

Jan 29

FCO1:30 pmRome Fiumicino

17h 44m

1 stop

ONT10:14 pmOntario

$758

Delta

Nov 22

ONT11:10 pmOntario

24h 05m

1 stop

FCO8:15 amRome Fiumicino

Nov 27

FCO6:10 amRome Fiumicino

24h 58m

2 stops

ONT10:08 pmOntario

$761

United Airlines flights from Ontario to Europe

Our best United Airlines deals on Ontario to Europe flight tickets

United Airlines

Nov 9

ONT6:37 pmOntario

28h 48m

1 stop

LHR7:25 amLondon Heathrow

Nov 12

LHR6:50 amLondon Heathrow

19h 57m

2 stops

ONT6:47 pmOntario

$736

United Airlines

Nov 9

ONT6:00 amOntario

43h 40m

2 stops

LHR9:40 amLondon Heathrow

Nov 12

LHR6:50 amLondon Heathrow

19h 57m

2 stops

ONT6:47 pmOntario

$746

United Airlines

Nov 4

ONT5:00 amOntario

18h 00m

2 stops

MAD8:00 amMadrid Barajas

Nov 18

MAD1:25 pmMadrid Barajas

38h 22m

2 stops

ONT6:47 pmOntario

$747

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 11/4

7:00 am-7:45 am

1 stop15h 45m

Madrid Barajas

Wed 11/11

11:05 am-11:43 pm

1 stop21h 38m

$724

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 11/4

7:00 am-7:45 am

1 stop15h 45m

Madrid Barajas

Wed 11/11

10:35 am-11:43 pm

2 stops22h 08m

$735

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Sun 11/1

1:35 pm-7:25 am

1 stop33h 50m

London Heathrow

Wed 11/4

6:50 am-6:47 pm

2 stops19h 57m

$736

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 11/9

6:37 pm-7:25 am

1 stop28h 48m

London Heathrow

Thu 11/12

6:50 am-6:47 pm

2 stops19h 57m

$736

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/25

6:02 am-1:15 pm

1 stop22h 13m

Rome Fiumicino

Tue 9/1

3:15 pm-11:04 am

1 stop28h 49m

$736

Quickest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 11/16

10:30 am-10:45 am

1 stop15h 15m

Rome Fiumicino

Fri 11/20

1:00 pm-9:39 pm

1 stop17h 39m

$739

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 11/15

7:00 am-9:55 am

1 stop17h 55m

Madrid Barajas

Wed 12/2

11:55 am-8:46 pm

1 stop17h 51m

$741

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 11/16

7:00 am-9:55 am

1 stop17h 55m

Madrid Barajas

Wed 12/2

11:55 am-8:46 pm

1 stop17h 51m

$741

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 12/2

6:30 am-9:20 am

1 stop17h 50m

Madrid Barajas

Wed 12/9

12:40 pm-9:07 pm

1 stop17h 27m

$761

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 11/25

6:00 am-12:20 pm

1 stop22h 20m

London Heathrow

Wed 12/2

2:45 pm-11:09 am

1 stop28h 24m

$790

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 January. Flight prices, which tend to average around $688, 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 January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $693.

Can stopping save me money on Ontario to Europe flights?

You could potentially save up to 23% 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 05m
Direct flights	None

The fastest flight from Ontario to Europe takes 12h 05m

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 8 as of August 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
British Airways	PriceFrom $329	Free Cancellation	Rating 6.7 8,147 reviews	Search British Airways flights
American Airlines	PriceFrom $439	Free Cancellation	Rating 7.1 11,850 reviews	Search American Airlines flights
Virgin Atlantic	PriceFrom $469	Free Cancellation	Rating 7.5 694 reviews	Search Virgin Atlantic flights
United Airlines	PriceFrom $515	Free Cancellation	Rating 7.4 10,059 reviews	Search United Airlines flights
Iberia	PriceFrom $522	Free Cancellation	Rating 7.0 3,267 reviews	Search Iberia flights
Delta	PriceFrom $535	Free Cancellation	Rating 7.8 8,483 reviews	Search Delta flights
KLM	PriceFrom $657	Free Cancellation	Rating 7.8 1,552 reviews	Search KLM flights
Alaska Airlines	PriceFrom $806	Free Cancellation	Rating 7.9 12,762 reviews	Search Alaska 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.