$379 Find Cheap Flights from Europe to Ontario - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 11/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Europe to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Europe to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Europe to Ontario

Wed, Dec 2 - Tue, Feb 2
British Airways Logo
11:05 am - 6:18 pm
MAD
-
ONT
16h 13m
1 stop
British Airways Logo
10:58 am - 9:20 am
ONT
-
MAD
13h 22m
1 stop
$544British Airways
Thu, Sep 17 - Mon, Sep 21
British Airways Logo
12:40 pm - 9:29 am
MAD
-
ONT
29h 49m
1 stop
British Airways Logo
7:20 am - 3:50 pm
ONT
-
MAD
23h 30m
2 stops
$550British Airways
Thu, Sep 17 - Mon, Sep 21
United Airlines Logo
6:05 am - 10:51 pm
MAD
-
ONT
25h 46m
2 stops
United Airlines Logo
5:00 am - 9:00 am
ONT
-
MAD
19h 00m
2 stops
$551United Airlines
Tue, Sep 1 - Tue, Sep 8
American Airlines Logo
3:55 pm - 10:59 pm
MAD
-
ONT
16h 04m
1 stop
American Airlines Logo
10:29 am - 9:05 am
ONT
-
MAD
13h 36m
1 stop
$560American Airlines
Sat, Sep 26 - Tue, Oct 6
United Airlines Logo
4:10 pm - 10:59 pm
BCN
-
ONT
15h 49m
1 stop
United Airlines Logo
1:52 pm - 2:20 pm
ONT
-
BCN
15h 28m
1 stop
$561United Airlines
Thu, Aug 27 - Thu, Sep 10
Iberia Logo
3:55 pm - 10:59 pm
MAD
-
ONT
16h 04m
1 stop
Iberia Logo
2:22 pm - 2:25 pm
ONT
-
MAD
15h 03m
1 stop
$563Iberia
Thu, Aug 27 - Thu, Sep 10
Iberia Logo
3:55 pm - 10:59 pm
MAD
-
ONT
16h 04m
1 stop
Iberia Logo
2:22 pm - 2:25 pm
ONT
-
MAD
15h 03m
1 stop
$564Iberia
Thu, Sep 3 - Sun, Sep 6
American Airlines Logo
2:20 pm - 11:43 am
MXP
-
ONT
30h 23m
2 stops
American Airlines Logo
1:17 pm - 11:35 pm
ONT
-
MXP
25h 18m
2 stops
$570American Airlines
Thu, Nov 19 - Fri, Nov 27
KLM Logo
1:05 pm - 10:14 pm
MXP
-
ONT
18h 09m
1 stop
KLM Logo
12:00 pm - 11:10 am
ONT
-
MXP
14h 10m
1 stop
$586KLM
Wed, Nov 18 - Fri, Nov 27
KLM Logo
1:30 pm - 10:14 pm
FCO
-
ONT
17h 44m
1 stop
KLM Logo
7:00 am - 8:15 am
ONT
-
FCO
16h 15m
1 stop
$607KLM
Useful Info

Good to know

Low season

January
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 28% increase in price.

FAQs for booking flights from Europe to Ontario

  • How does KAYAK find such low prices on flights from Europe to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Europe to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Europe to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Europe is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Europe to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Europe with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Europe to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Europe up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Europe to Ontario

 
Need help choosing which airline to fly with from Europe to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10013 reviews
8.1Crew
7.1Entertainment
6.6Food
7.3Comfort
7.7Boarding
Airline reviews

We boarded the plane and were about to take off when we were notified that the tires had to be checked. Upon inspection, they were found to need replacement, so the entire plane had to be deboarded. After we exited the plane, United staff forced us to stay in the gate area by posting "Do Not Exit" signs on the doors connecting the gate area to the terminal. Many of us had already rebooked our flights and had no checked bags, but they told us we could not leave. This seemed inappropriate to hold people under false pretenses. When the agent told us we could leave, I asked them to please take down the "Do Not Exit" signs, as they were misleading. The agent refused, and I told them that it didn't feel right to hold people like that.

2.0 MediocreAnonymous, Jul 2026
YVR - SFO
Read more United Airlines reviews

We boarded the plane and were about to take off when we were notified that the tires had to be checked. Upon inspection, they were found to need replacement, so the entire plane had to be deboarded. After we exited the plane, United staff forced us to stay in the gate area by posting "Do Not Exit" signs on the doors connecting the gate area to the terminal. Many of us had already rebooked our flights and had no checked bags, but they told us we could not leave. This seemed inappropriate to hold people under false pretenses. When the agent told us we could leave, I asked them to please take down the "Do Not Exit" signs, as they were misleading. The agent refused, and I told them that it didn't feel right to hold people like that.

It was a short, comfortable flight. It did leave an hour late due to the pilot having to be replaced (family emergency) but that didn’t inconvenience myself & my friend. The situation was explained, eventually.

There was a piece of plastic baked into my buttermilk biscuit! I have a pictures. The flight attendants in first class were really apologetic, and tried to rectify the situation. I I am very appreciative that they were able to give me some packets of pretzels and gummy bears. I understand they don't personally handle the food until warming it up so I know it wasn't their fault. I don't know whether it was a newer aircraft, or different food packaging, but I was happy that when the food was being warmed up - it didn't smell like plastic. Jokes on me with finding plastic in my food.

The seats were uncomfortable, as if the cushions haven't been switched out in many years. I felt like I was on an old bus. The food was delicious. thank you. Onboard entertainment, very limited. Unless you like violent movies. Why in the world would you have such severely violent movies on a plane? if you don't want to see such things, you don't have a choice. Have you considered that when choosing entertainment? Good god. Why would you have the Godfather? Or black women being brutally beaten with a club? Why in the hell would you put that kind of material on a plane? As for Kayak: Why when I ordered Qantas, was the plane on United?

United was excellent. We had very good experience flying the carrier. Certainly. We will opt to fly them for sure. Lufthansa is out.

The seat that I got this time is really good.

UA594 was delayed multiple times. I ended up getting picked up so I can make it in time for work 6AM on Monday, 7/6/2026

Monitor control didn’t work & couldn’t figure out how to lay bed flat so I slept very poorly. Cabin was very cold

Excellent flight. On time. Great staff. Clean and crisp cabin.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario