ONT - ATH

$469 Find Cheap Flights from Ontario to Athens

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 Athens departing on 8/3. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Athens, 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 Athens, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Cheap Flight Deals from Ontario to Athens (ONT-ATH)

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to Athens.
Discover the best prices for you by selecting your travel dates on KAYAK.
 Logo
3:00 pm - 12:50 amONT-ATH
23h 50m2 stops
 Logo
8:45 pm - 12:02 amATH-ONT
37h 17m2 stops
Wed, Sep 24 - Mon, Oct 20
United Airlines Logo
6:04 am - 1:30 pmONT-ATH
21h 26m2 stops
United Airlines Logo
6:00 am - 10:52 pmATH-ONT
26h 52m2 stops
$682United Airlines
Find Deal
Tue, Sep 30 - Tue, Oct 14
Air Canada Logo
5:05 am - 10:05 amONT-ATH
19h 00m2 stops
Air Canada Logo
3:30 pm - 12:32 pmATH-ONT
31h 02m2 stops
$689Air Canada
Find Deal
Sun, Aug 17 - Wed, Sep 17
Delta Logo
12:00 pm - 10:00 amONT-ATH
36h 00m1 stop
Delta Logo
9:10 am - 7:29 pmATH-ONT
20h 19m1 stop
$698Delta
Find Deal
Sat, Aug 16 - Fri, Aug 29
United Airlines Logo
7:00 am - 10:30 amONT-ATH
17h 30m1 stop
United Airlines Logo
12:35 pm - 10:30 pmATH-ONT
19h 55m1 stop
$716United Airlines
Find Deal
Mon, Aug 18 - Sat, Aug 30
Delta Logo
10:59 pm - 10:55 amONT-ATH
25h 56m1 stop
Delta Logo
6:30 am - 5:17 pmATH-ONT
20h 47m2 stops
$732Delta
Find Deal
Sat, Sep 20 - Thu, Oct 2
Air Canada Logo
5:10 am - 10:05 amONT-ATH
18h 55m2 stops
Air Canada Logo
3:30 pm - 12:32 pmATH-ONT
31h 02m2 stops
$738Air Canada
Find Deal
Sun, Sep 21 - Wed, Oct 1
KLM Logo
7:00 am - 10:55 amONT-ATH
17h 55m1 stop
KLM Logo
9:10 am - 10:41 pmATH-ONT
23h 31m1 stop
$906KLM
Find Deal
Tue, Aug 19 - Tue, Sep 16
KLM Logo
7:05 am - 10:00 amONT-ATH
16h 55m1 stop
KLM Logo
12:10 pm - 10:29 pmATH-ONT
20h 19m1 stop
$987KLM
Find Deal
Sun, Jul 13 - Tue, Aug 19
American Airlines Logo
11:59 pm - 9:15 amONT-ATH
23h 16m2 stops
American Airlines Logo
8:35 pm - 6:23 pmATH-ONT
31h 48m2 stops
$1,343American Airlines
Find Deal
Mon, May 19 - Sat, May 24
Useful Info

KAYAK's insights & trends for Ontario to Athens flights

Get data-powered insights and trends into flights from Ontario to Athens 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 Athens?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Athens, 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 Athens is November, where tickets cost $618 (return) on average. On the other hand, the most expensive months are June and September, where the average cost of round-trip tickets is $1,567 and $1,371 respectively.

Good to know

Low seasonDecember
High seasonAugust
Cheapest flight$469
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Ontario to Athens

When to book flights from Ontario to Athens

Are your dates flexible? Find out the best times to travel from Ontario to Athens based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Athens

  • What is the cheapest flight from Ontario to Athens?

    In the last 3 days, the lowest price for a flight from Ontario to Athens was $469 for a one-way ticket and $638 for a round-trip.

  • Do I need a passport to fly between Ontario and Athens?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Ontario and on arrival in Athens.

  • Which aircraft models fly most regularly from Ontario to Athens?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Athens?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Ontario and Athens, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Athens, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Ontario to Athens are Delta and KLM. With an average price for the route of $812 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,516 and an overall rating of 7.8.

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

    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 Athens.

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

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

    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 Athens with an airline and back to Ontario with another airline. Booking your flights between Ontario and ATH can sometimes prove cheaper using this method.

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

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

Top 4 airlines serving from Ontario to Athens

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Athens. 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 Athens? 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 7936 reviews
7.9Comfort
8.2Boarding
7.3Food
8.5Crew
7.9Entertainment
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

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

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!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

You should not have to pay for WiFi in business class

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

Overall very poor. Flight was disorganised, staff were rude and this is my second experience with KLM that I've had baggage go missing. It feels like, if you are an economy customer, KLM staff do not show you any care. I shall never fly with KLM again. Worst airline in Europe

Great boarding, great short flight but no entertainment whatsoever and no wifi. Prepare to disembark by a staircase.

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.

Old and out of date plane, it seem like every time I fly with united there’s and issue. We were delayed,

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 from Ontario to Athens

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.