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 27% of people opting to fly with this airline when traveling to Europe. Keep in mind that there are 33 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, Delta, and KLM 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 8 as of October 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.

$311 Cheap Flights from Ontario to Europe in 2026/27

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.

6:30 am - 10:15 amONT Ontario-DUB Dublin

19h 45m2 stops Denver Intl Reykjavik Keflavik Intl

11:30 am - 11:51 pmDUB Dublin-ONT Ontario

20h 21m2 stops Reykjavik Keflavik Intl Denver Intl

$566Multiple Airlines

Tue, Nov 10 - Tue, Nov 17

12:00 pm - 11:45 amONT Ontario-MAD Madrid Barajas

14h 45m1 stop Atlanta Hartsfield-Jackson

1:55 pm - 10:14 pmMAD Madrid Barajas-ONT Ontario

17h 19m1 stop Atlanta Hartsfield-Jackson

$604KLM

Mon, Jan 18 - Thu, Jan 28

12:00 pm - 11:45 amONT Ontario-MAD Madrid Barajas

14h 45m1 stop Atlanta Hartsfield-Jackson

1:55 pm - 10:14 pmMAD Madrid Barajas-ONT Ontario

17h 19m1 stop Atlanta Hartsfield-Jackson

$607Delta

Mon, Jan 11 - Tue, Feb 9

12:00 pm - 11:45 amONT Ontario-MAD Madrid Barajas

14h 45m1 stop Atlanta Hartsfield-Jackson

1:55 pm - 10:14 pmMAD Madrid Barajas-ONT Ontario

17h 19m1 stop Atlanta Hartsfield-Jackson

$607Delta

Mon, Jan 11 - Thu, Feb 11

6:30 am - 10:15 amONT Ontario-DUB Dublin

19h 45m2 stops Denver Intl Reykjavik Keflavik Intl

11:30 am - 11:51 pmDUB Dublin-ONT Ontario

20h 21m2 stops Reykjavik Keflavik Intl Denver Intl

$672Multiple Airlines

Wed, Nov 11 - Wed, Nov 18

6:53 pm - 11:40 pmONT Ontario-KRK Krakow J. Paul II Balice

19h 47m2 stops San Francisco Munich Franz Josef Strauss

10:10 am - 8:26 pmKRK Krakow J. Paul II Balice-ONT Ontario

19h 16m2 stops Frankfurt am Main San Francisco

$707United Airlines

Wed, Jan 27 - Tue, Feb 9

6:53 pm - 11:40 pmONT Ontario-KRK Krakow J. Paul II Balice

19h 47m2 stops San Francisco Munich Franz Josef Strauss

10:10 am - 8:26 pmKRK Krakow J. Paul II Balice-ONT Ontario

19h 16m2 stops Frankfurt am Main San Francisco

$707United Airlines

Wed, Jan 27 - Wed, Feb 10

7:00 am - 12:15 pmONT Ontario-MAD Madrid Barajas

20h 15m2 stops Dallas/Fort Worth London Heathrow

12:55 am - 9:40 amMAD Madrid Barajas-ONT Ontario

17h 45m1 stop Dallas/Fort Worth

$741Iberia

Tue, Nov 3 - Mon, Nov 16

7:00 am - 6:10 amONT Ontario-MAD Madrid Barajas

14h 10m1 stop Dallas/Fort Worth

12:55 am - 9:40 amMAD Madrid Barajas-ONT Ontario

17h 45m1 stop Dallas/Fort Worth

$744Iberia

Tue, Nov 3 - Mon, Nov 16

12:00 pm - 11:20 amONT Ontario-FCO Rome Fiumicino

14h 20m1 stop Atlanta Hartsfield-Jackson

1:30 pm - 10:14 pmFCO Rome Fiumicino-ONT Ontario

17h 44m1 stop Atlanta Hartsfield-Jackson

$754KLM

Wed, Feb 3 - Wed, Feb 17

Cheap last minute flights

Enter your travel dates to find the best prices.

12:16 pm - 12:15 pmONT Ontario-MAD Madrid Barajas

14h 59m1 stop Atlanta Hartsfield-Jackson

1:05 pm - 11:55 pmMAD Madrid Barajas-ONT Ontario

19h 50m2 stops Amsterdam Schiphol Salt Lake City

$636Delta

Tue, Oct 6 - Wed, Oct 21

11:56 am - 7:15 pmONT Ontario-MAD Madrid Barajas

22h 19m2 stops Seattle/Tacoma Intl Paris Charles de Gaulle

9:50 am - 10:43 pmMAD Madrid Barajas-ONT Ontario

21h 53m2 stops Atlanta Hartsfield-Jackson Seattle/Tacoma Intl

$686Delta

Fri, Oct 9 - Wed, Oct 14

7:00 am - 9:00 amONT Ontario-MAD Madrid Barajas

17h 00m2 stops Chicago O'Hare Intl Newark

5:55 am - 8:31 pmMAD Madrid Barajas-ONT Ontario

23h 36m3 stops Frankfurt am Main Seattle/Tacoma Intl San Francisco

$714United Airlines

Tue, Oct 6 - Tue, Oct 13

7:00 am - 9:05 amONT Ontario-MAD Madrid Barajas

17h 05m1 stop Dallas/Fort Worth

12:40 pm - 10:59 pmMAD Madrid Barajas-ONT Ontario

19h 19m1 stop Charlotte Douglas

$744British Airways

Tue, Oct 6 - Wed, Oct 21

10:42 pm - 9:00 amONT Ontario-DUB Dublin

26h 18m1 stop New York John F Kennedy Intl

11:30 am - 9:45 pmDUB Dublin-ONT Ontario

18h 15m1 stop New York John F Kennedy Intl

$845JetBlue

Tue, Oct 6 - Sat, Oct 17

1:24 pm - 12:20 pmONT Ontario-FCO Rome Fiumicino

13h 56m1 stop Denver Intl

9:55 am - 8:51 pmFCO Rome Fiumicino-ONT Ontario

19h 56m2 stops Frankfurt am Main Denver Intl

$855United Airlines

Sun, Oct 4 - Tue, Nov 3

1:05 pm - 5:15 pmONT Ontario-FCO Rome Fiumicino

19h 10m2 stops Phoenix Sky Harbor Intl London Heathrow

11:05 am - 10:53 pmFCO Rome Fiumicino-ONT Ontario

20h 48m2 stops New York John F Kennedy Intl Phoenix Sky Harbor Intl

$858American Airlines

Tue, Oct 6 - Wed, Oct 21

11:59 pm - 9:05 amONT Ontario-MAD Madrid Barajas

24h 06m1 stop Dallas/Fort Worth

12:40 pm - 10:59 pmMAD Madrid Barajas-ONT Ontario

19h 19m1 stop Charlotte Douglas

$927British Airways

Sun, Oct 4 - Wed, Oct 21

8:03 am - 7:45 amONT Ontario-DUB Dublin

15h 42m2 stops San Francisco Vancouver Intl

9:50 am - 10:51 pmDUB Dublin-ONT Ontario

45h 01m2 stops Vancouver Intl San Francisco

$931Air Canada

Tue, Oct 6 - Wed, Oct 14

11:59 pm - 9:05 amONT Ontario-MAD Madrid Barajas

24h 06m1 stop Dallas/Fort Worth

12:20 pm - 10:53 pmMAD Madrid Barajas-ONT Ontario

19h 33m2 stops New York John F Kennedy Intl Phoenix Sky Harbor Intl

$940American Airlines

Sun, Oct 4 - Wed, Oct 21

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KLM flights from Ontario to Europe

Our best KLM deals on Ontario to Europe flight tickets

KLM

Jan 18

ONT12:00 pmOntario

14h 45m

1 stop

MAD11:45 amMadrid Barajas

Jan 28

MAD1:55 pmMadrid Barajas

17h 19m

1 stop

ONT10:14 pmOntario

$604

KLM

Nov 27

ONT7:05 amOntario

17h 40m

1 stop

MAD9:45 amMadrid Barajas

Dec 8

MAD12:20 pmMadrid Barajas

17h 38m

1 stop

ONT8:58 pmOntario

$650

KLM

Feb 5

ONT12:00 pmOntario

14h 45m

1 stop

MAD11:45 amMadrid Barajas

Feb 14

MAD12:20 pmMadrid Barajas

18h 54m

1 stop

ONT10:14 pmOntario

$706

Delta flights from Ontario to Europe

Our best Delta deals on Ontario to Europe flight tickets

Delta

Jan 11

ONT12:00 pmOntario

14h 45m

1 stop

MAD11:45 amMadrid Barajas

Feb 11

MAD1:55 pmMadrid Barajas

17h 19m

1 stop

ONT10:14 pmOntario

$607

Delta

Oct 26

ONT12:16 pmOntario

13h 29m

1 stop

MAD9:45 amMadrid Barajas

Nov 19

MAD12:20 pmMadrid Barajas

18h 37m

1 stop

ONT9:57 pmOntario

$612

Delta

Jan 18

ONT12:00 pmOntario

14h 45m

1 stop

MAD11:45 amMadrid Barajas

Jan 26

MAD1:55 pmMadrid Barajas

17h 19m

1 stop

ONT10:14 pmOntario

$617

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Tue 11/10

6:30 am-10:15 am

2 stops19h 45m

Dublin

Tue 11/17

11:30 am-11:51 pm

2 stops20h 21m

$566

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Mon 1/18

12:00 pm-11:45 am

1 stop14h 45m

Madrid Barajas

Thu 1/28

1:55 pm-10:14 pm

1 stop17h 19m

$604

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Mon 1/11

12:00 pm-11:45 am

1 stop14h 45m

Madrid Barajas

Tue 2/9

1:55 pm-10:14 pm

1 stop17h 19m

$607

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Mon 1/11

12:00 pm-11:45 am

1 stop14h 45m

Madrid Barajas

Thu 2/11

1:55 pm-10:14 pm

1 stop17h 19m

$607

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Wed 11/11

6:30 am-10:15 am

2 stops19h 45m

Dublin

Wed 11/18

11:30 am-11:51 pm

2 stops20h 21m

$672

OntarioKrakow

ONT Ontario - KRK Krakow J. Paul II Balice

ONTKRK

Ontario

Wed 1/27

6:53 pm-11:40 pm

2 stops19h 47m

Krakow J. Paul II Balice

Tue 2/9

10:10 am-8:26 pm

2 stops19h 16m

$707

OntarioKrakow

ONT Ontario - KRK Krakow J. Paul II Balice

ONTKRK

Ontario

Wed 1/27

6:53 pm-11:40 pm

2 stops19h 47m

Krakow J. Paul II Balice

Wed 2/10

10:10 am-8:26 pm

2 stops19h 16m

$707

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Tue 11/3

7:00 am-12:15 pm

2 stops20h 15m

Madrid Barajas

Mon 11/16

12:55 am-9:40 am

1 stop17h 45m

$741

Quickest round-trip

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Tue 11/3

7:00 am-6:10 am

1 stop14h 10m

Madrid Barajas

Mon 11/16

12:55 am-9:40 am

1 stop17h 45m

$744

OntarioRome

ONT Ontario - FCO Rome Fiumicino

ONTFCO

Ontario

Wed 2/3

12:00 pm-11:20 am

1 stop14h 20m

Rome Fiumicino

Wed 2/17

1:30 pm-10:14 pm

1 stop17h 44m

$754

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 $664, 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 20% 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

Best Price Found	$311
Fastest flight time	12h 00m
Direct flights	None

The best one-way flight to Europe from Ontario in the past 72 hours is $311. The best round-trip flight deal from Ontario to Europe found on momondo in the last 72 hours is $566.

The fastest flight from Ontario to Europe takes 12h 00m

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 October 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 7.0 12,130 reviews	Search American Airlines flights
British Airways	PriceFrom $474	Free Cancellation	Rating 6.7 8,244 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom $488	Free Cancellation	Rating 7.4 694 reviews	Search Virgin Atlantic flights
Iberia	PriceFrom $539	Free Cancellation	Rating 7.0 3,255 reviews	Search Iberia flights
KLM	PriceFrom $657	Free Cancellation	Rating 7.8 1,576 reviews	Search KLM flights
United Airlines	PriceFrom $700	Free Cancellation	Rating 7.4 10,287 reviews	Search United Airlines flights
Delta	PriceFrom $710	Free Cancellation	Rating 7.8 8,627 reviews	Search Delta flights
Alaska Airlines	PriceFrom $806	Free Cancellation	Rating 7.9 13,010 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.