$424 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 10/12. 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.
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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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Flights Deals

Best Southeast Europe Flight Deals from Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Athens
Athens2 stops$625
Belgrade
Belgrade2 stops$692
Split
Split2 stops$726
Dubrovnik
Dubrovnik2 stops$826
Thera
Thera2 stops$619
Cluj Napoca
Cluj Napoca2 stops$654
Athens
Athens2 stops$625
Belgrade
Belgrade2 stops$692
Split
Split2 stops$726
Dubrovnik
Dubrovnik2 stops$826
Thera
Thera2 stops$619
Cluj Napoca
Cluj Napoca2 stops$654

Cheap Flight Deals from Ontario to Southeast Europe (ONT-zzYMH)

 
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.

Recent round-trip flight deals from Ontario to Southeast Europe

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Ontario to Southeast Europe.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
1:15 pm - 4:50 pmONT-OTP
17h 35m2 stops
United Airlines Logo
12:40 pm - 10:30 pmOTP-ONT
19h 50m2 stops
$593United Airlines
Find Deal
Tue, Sep 30 - Tue, Oct 14
British Airways Logo
12:51 pm - 1:15 amONT-ATH
27h 24m2 stops
British Airways Logo
7:30 am - 9:41 pmATH-ONT
24h 11m2 stops
$625British Airways
Find Deal
Thu, Oct 30 - Thu, Nov 13
Delta Logo
10:59 pm - 10:55 amONT-ATH
25h 56m1 stop
Delta Logo
6:30 am - 10:42 pmATH-ONT
26h 12m2 stops
$681Delta
Find Deal
Sat, Oct 4 - Wed, Oct 15
 Logo
5:10 am - 10:05 amONT-ATH
18h 55m2 stops
 Logo
12:10 pm - 12:32 pmATH-ONT
34h 22m3 stops
Wed, Sep 24 - Mon, Oct 20
Delta Logo
1:00 pm - 10:55 pmONT-SPU
24h 55m2 stops
Delta Logo
6:30 am - 4:14 pmSPU-ONT
18h 44m2 stops
$726Delta
Find Deal
Tue, Sep 9 - Tue, Sep 30
 Logo
9:35 am - 5:45 pmONT-DBV
23h 10m2 stops
 Logo
5:30 pm - 6:00 pmDBV-ONT
32h 30m2 stops
Mon, Oct 20 - Fri, Oct 31
American Airlines Logo
12:46 pm - 7:45 pmONT-DBV
21h 59m2 stops
American Airlines Logo
1:05 pm - 6:17 pmDBV-ONT
38h 12m2 stops
$856American Airlines
Find Deal
Mon, Jul 28 - Thu, Aug 7
KLM Logo
1:10 pm - 10:55 pmONT-SPU
24h 45m2 stops
KLM Logo
6:30 am - 6:20 pmSPU-ONT
20h 50m2 stops
$860KLM
Find Deal
Wed, May 21 - Tue, Jun 3
KLM Logo
10:59 pm - 10:55 amONT-ATH
25h 56m1 stop
KLM Logo
10:30 am - 7:42 pmATH-ONT
19h 12m1 stop
$960KLM
Find Deal
Sun, Oct 12 - Thu, Oct 23
American Airlines Logo
2:34 pm - 7:45 pmONT-DBV
20h 11m2 stops
American Airlines Logo
12:50 pm - 9:59 amDBV-ONT
30h 09m3 stops
$1,176American Airlines
Find Deal
Mon, Jul 28 - Thu, Aug 7
Useful Info

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.

What is the cheapest month to fly from Ontario to Southeast Europe?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Southeast Europe, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Southeast Europe is November, when tickets cost $618 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of round-trip tickets is $1,567 and $1,371 respectively.


Good to know

Low seasonDecember
High seasonAugust
Cheapest flight$424
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 4% lower on average.
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.

Top 4 airlines serving 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.
8.0
DeltaOverall score based on 7937 reviews
7.3Food
8.2Boarding
8.5Crew
7.9Entertainment
7.9Comfort
Airline reviews

Delta flight was on time, seats were comfortable, and crew was nice.

8.0 ExcellentAnonymous, Apr 2025LAX - DEN
Read more Delta reviews

Delta flight was on time, seats were comfortable, and crew was nice.

Bathrooms dirty sinks clogged. No one seemed to clean them. Plane very old

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

You should not have to pay for WiFi in business class

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Transfer at CDG to connecting KLM flight to Amsterdam was a NIGHTMARE. LONG WALKWAYS, NO MOVING WALKWAYS, POOR signage, Have to take a train & No staff visible to help navigate the maze. AVOID TRANSFER AT CDG AT ALL COST.

Good food. Excellent crew service. Clean aircraft. Narrow seats and isle.

I tried to upgrade to premium economy anis seat online during the checkin process. The payment didn’t work due to a technical glitch on KLM’s website. I wasn’t able to change my seat unless I called Amsterdam. Since I was in Canada and there’s a time difference this wasn’t practical. So when I arrived early to Ottawa airport my seat wasn’t available and I could only get a middle seat in premium economy which isn’t great. These middle seats are priced at the same rate as an aisle seat which makes no sense.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Seats were comfortable. It’s was so cold and very uncomfortable. I paid 2000 miles for wifi service that was choppy the whole flight. Would like to be reimbursed for my miles Food was so disappointing. Three cold and terrible meals for $3000 round trip. This needs to be better.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

Smooth flight. As always dinner could have been more generous. Breakfast was great.

AWFUL. I have had the experience of traveling with many airlines across the world, and hands down United Airlines is the worst. Not one flight was on time, and I don’t think I met one crew member or staff member who wasn’t rude.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

British Airways staff are very polite and willing to help.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

Worst seats I’ve ever had !!! The seats were very narrow and uncomfortable and misaligned with the seats in front of mine leading to bottom of the seat in front of mine pressing on my legs for 15.5 hours !

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

The flight was quick and to the point. The crew just did their job w/o excessive talking and everything was just perfect.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

Had to wait on pilot and crew to depart and had to wait to arrive at the gate because they only had 2 crews working. Delays, delays....Planes just keep getting smaller and tighter and they nickle and dime for everything. When will an airline actually wake up and make flying more enjoyable?

Everything you need to know for your flight to Southeast Europe

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