$410 Find Cheap Flights from Ontario to Southeast Europe

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Southeast Europe departing on 11/18. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Southeast Europe

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Southeast Europe, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Southeast Europe, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Ontario to Southeast Europe

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Athens
Athens2 stops$541
Belgrade
Belgrade2 stops$562
Split
Split2 stops$1,045
Dubrovnik
Dubrovnik2 stops$600
Cluj Napoca
Cluj Napoca2 stops$484
Athens
Athens2 stops$541
Belgrade
Belgrade2 stops$562
Split
Split2 stops$1,045
Dubrovnik
Dubrovnik2 stops$600
Cluj Napoca
Cluj Napoca2 stops$484

Book Cheap Ontario to Southeast Europe Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Southeast Europe 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 Ontario to Southeast Europe

Mon, Nov 17 - Wed, Dec 3
United Airlines Logo
6:00 am - 1:40 pmONT-CLJ
21h 40m2 stops
United Airlines Logo
6:00 am - 5:37 pmCLJ-ONT
21h 37m2 stops
$484United Airlines
Find Deal
Wed, Feb 11 - Wed, Feb 25
British Airways Logo
4:49 pm - 8:00 pmONT-OTP
17h 11m2 stops
British Airways Logo
8:05 am - 9:40 pmOTP-ONT
23h 35m2 stops
$504British Airways
Find Deal
Mon, Nov 17 - Wed, Dec 3
Delta Logo
7:05 am - 11:40 amONT-LJU
43h 35m2 stops
Delta Logo
12:50 pm - 11:58 pmLJU-ONT
44h 08m2 stops
$546Delta
Find Deal
Thu, Feb 12 - Fri, Feb 27
American Airlines Logo
11:05 am - 6:50 pmONT-ATH
21h 45m2 stops
American Airlines Logo
7:45 am - 8:24 pmATH-ONT
22h 39m2 stops
$554American Airlines
Find Deal
Tue, Jan 6 - Fri, Jan 30
Delta Logo
10:30 pm - 11:55 amONT-BEG
28h 25m2 stops
Delta Logo
6:05 am - 10:38 pmBEG-ONT
25h 33m2 stops
$562Delta
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Sat, Mar 21 - Mon, Mar 30
American Airlines Logo
10:57 am - 6:50 pmONT-ATH
22h 53m2 stops
American Airlines Logo
7:45 am - 11:43 pmATH-ONT
25h 58m2 stops
$585American Airlines
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Sun, Apr 5 - Tue, Apr 14
Multiple Airlines Logo
5:00 am - 4:10 pmONT-DBV
26h 10m2 stops
Multiple Airlines Logo
5:00 pm - 8:17 pmDBV-ONT
36h 17m2 stops
$600Multiple Airlines
Find Deal
Wed, Nov 12 - Sun, Nov 16
KLM Logo
6:00 am - 12:50 pmONT-SKG
44h 50m2 stops
KLM Logo
12:25 pm - 11:04 pmSKG-ONT
44h 39m2 stops
$606KLM
Find Deal
Mon, Apr 6 - Wed, Apr 15
Multiple Airlines Logo
5:00 am - 4:10 pmONT-DBV
26h 10m2 stops
Multiple Airlines Logo
6:55 pm - 8:17 pmDBV-ONT
34h 22m2 stops
$616Multiple Airlines
Find Deal
Wed, Nov 12 - Sun, Nov 16
KLM Logo
7:05 am - 11:40 amONT-LJU
19h 35m2 stops
KLM Logo
12:25 pm - 11:04 pmLJU-ONT
43h 39m2 stops
$715KLM
Find Deal
Booking Insights

KAYAK's insights & trends for Ontario to Southeast Europe flights

Get data-powered insights and trends into flights from Ontario to Southeast Europe to help you find the cheapest flights, the best time to fly and much more.

Can I save money by flying with a layover from Ontario to Southeast Europe?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $317, prices are generally cheapest when you fly direct.

Good to know

Low seasonMarch
Cheapest flight$410
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 66% increase in price.
Flight from Ontario to Athens

FAQs - booking Southeast Europe flights

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

    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 Ontario to Southeast Europe.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Southeast 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 Ontario to Southeast Europe?

    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 from Ontario to Southeast Europe with an airline and back with another airline.

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

    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 from Ontario to Southeast Europe up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Southeast Europe?

    The cheapest time of day to fly to Southeast Europe is generally in the evening, when round-trip flights cost $815 on average. Morning departures are around 13% more expensive than evening flights, on average. The most expensive time of day to fly to Southeast Europe is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,089.

Reviews of the top airline flying from Ontario to Southeast Europe

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Southeast Europe. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Southeast Europe? 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 8982 reviews
7.1Entertainment
6.6Food
7.7Boarding
7.3Comfort
8.1Crew
Airline reviews

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

6.0 GoodSandra, Oct 2025SFO - MUC
Read more United Airlines reviews

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Everything you need to know for your flight to Southeast Europe

Information on your arrival and departure airports

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