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ONT - ATH

$457 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 7/16. 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
0 bags
Thu 7/11
Thu 7/18

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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
In the last 7 days travelers have searched 44,212,782 times on KAYAK, and here is why:

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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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:50 am - 10:45 amONT-ATH
17h 55m1 stop
1:00 pm - 10:57 pmATH-ONT
19h 57m1 stop
$664KLM
Find Deal
Tue, Aug 20 - Thu, Aug 29
11:59 pm - 9:25 amONT-ATH
23h 26m2 stops
11:35 am - 9:54 amATH-ONT
32h 19m2 stops
$731American Airlines
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Fri, Aug 16 - Mon, Aug 26
5:10 am - 2:55 pmONT-ATH
23h 45m2 stops
7:05 am - 9:31 pmATH-ONT
24h 26m2 stops
$803United Airlines
Find Deal
Tue, Aug 13 - Sat, Aug 24
10:00 pm - 10:45 amONT-ATH
26h 45m1 stop
5:45 am - 11:59 pmATH-ONT
28h 14m2 stops
$822Delta
Find Deal
Fri, Aug 16 - Mon, Aug 26
8:10 am - 3:30 amONT-ATH
33h 20m2 stops
4:20 am - 10:27 pmATH-ONT
28h 07m2 stops
$828Iberia
Find Deal
Fri, Aug 16 - Mon, Aug 26
1:30 pm - 10:45 pmONT-ATH
23h 15m2 stops
6:00 am - 9:02 pmATH-ONT
25h 02m2 stops
$830United Airlines
Find Deal
Wed, Aug 14 - Sun, Aug 25
10:00 pm - 10:45 amONT-ATH
26h 45m1 stop
1:35 pm - 10:13 amATH-ONT
30h 38m2 stops
$870Delta
Find Deal
Fri, Aug 16 - Mon, Aug 26
2:39 pm - 3:40 amONT-ATH
27h 01m2 stops
4:20 pm - 10:27 pmATH-ONT
40h 07m2 stops
$928Iberia
Find Deal
Wed, Aug 14 - Wed, Aug 21
12:40 pm - 6:55 pmONT-ATH
20h 15m2 stops
8:00 pm - 8:02 pmATH-ONT
34h 02m2 stops
$970British Airways
Find Deal
Wed, Aug 28 - Wed, Sep 4
10:54 am - 6:20 pmONT-ATH
21h 26m2 stops
8:00 pm - 6:57 pmATH-ONT
32h 57m2 stops
$994British Airways
Find Deal
Tue, Jun 18 - Wed, Jun 26

Flights from Ontario to Athens - Travel Insights & Trends

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 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 $645 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,639 and $1,377 respectively.

How far in advance should I book a flight from Ontario to Athens?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Athens, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Ontario to Athens, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 2 days before departure.

Which airlines provide the cheapest flights from Ontario to Athens?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on KLM ($493) and United Airlines ($499). The cheapest round-trip tickets were found on KLM ($664) and American Airlines ($731).

Good to know

Low season

March

High season

April

Cheapest flight

$457
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 19% 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 $457 for a one-way ticket and $664 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?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Athens, with oneworld 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 $649 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 $971 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.

See more FAQs

Top 5 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 10277 reviews
8.0Entertainment
7.4Food
7.9Comfort
8.6Crew
8.2Boarding
Airline reviews

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

4.0 OkayBrooke, Jun 2024SFO - MSP
Read more about Delta reviews

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Another smooth and friendly flight. For a shorter flight, it was a pleasant surprise to see a decent snack and complimentary drinks.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Quick and efficient as always. Air France managed to loose and damage my luggage that never made it onto my KLM flight.

The food from Lagos to Amsterdam was was very poor compared to AMS-YYZ

The flight was again delayed for more then 2 hours with some lousy explanation regarding the reason of the delay. Although the flight was delayed for more than 2 hours, no refreshments were offered (according to EU regulations). Last 4 flights on KLM - always at least 2 hrs late. So be prepared that you cannot plan anything with KLM.

I thought KLM was the best airline but the Lima - Amsterdam was 1 hours late, the Brussels - Amsterdam was 2.30 hours late and the Amsterdam - Lima was 30 minutes late

no issues at all... Kudos to the food. This time was really really good

The food was ok. The crew seemed like they were cranky. I had one guy get mad at me for passing in between the storage area to get to the other toilet. I can understand if it's not allowed but reprimanding me like I'm a student saying "This is the last time!" was not appropriate. During my meal time, there was a French family around me. No problems there but when we usually have meals, they are supposed to put their chair in the upright position. These people did not do it and the steward did not tell them to raise their seat in the upright position. However, I was told to do so! So, me and another person next to me had to eat with the monitor almost touching our faces. Furthermore, a lady in front of me was putting her feet up and preventing another elder passenger from putting her seat back. To make it worse, she was continuously hitting her back into her seat, shaking my monitor while I was watching a movie. A crew member did speak to her about it but then she accused me of pushing her seat forward! The crew member gave me a death stare and told me to stop pushing the seat forward. I did not even touch her seat at all, if I did, she would know it. Her boyfriend also stood up and tried to push her seat even further past the maximum decline to no avail. None of these people were reprimanded but the steward, some bald guy, was extremely friendly with them and did not even try to instruct them to do anything until it was time to land. I resisted the urge to really argue with them because I would have obviously been seen as the aggressor (I have no idea why). I hardly said anything on this flight except "more wine please" and "sorry" if I bumped into someone accidentally. Overall, it was an annoying flight and I had to resist the urge to yell at the steward and the people he was overly friendly with. The happiest moment of this flight was leaving it.

Overall a good experience. We were disappointed when we had to check our carry on due to the plane being full. KLM hadn’t notified us and we had valuable items in the carry on but they still made us check it. Some of the food was great and some was mediocre. Crew is really kind and funny.

The worst airline. Cancelled flight 30 min before boarding and rebooked on flight after 3 days.

It was nice to be on a legacy airline, people try at least.

I travel frequently. The flight was late again... KLM should really try and be on time

The entertainment wasn’t playing in the app or online.

Why does it have to be painful to fly long distances?

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

Food is very bad and entertint not too many options ... flight attendet service is not good

Everything was pretty good except for food. They need to improve on it compared to other airlines.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

I had a great flight. Everything went smoothly and the flight arrived early.

Aisle chair was good and liked the foot bar preventing you from putting your foot in the isle, The breakfast on this international flight to Zurich was horrible (Europeans, specially, used to good food) may make this a dealbreaker for booking with United Airlines again. I agreed with my Spanish fellow passenger.

On time take off…US cabins look tired and need of refresh!

Backpack should NOT allowed put in the flight bin , only put it under the seat. I can't find space put my carry on luggage!!! and I pay for it ! that was very bad experience

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in flight WiFi Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay (especially this much) for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a terrible attitude for no reason, nor will they act the way this woman did. Unacceptable.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

Economy class has no legroom so if you have the money worth to upgrade! Food was absolutely horrible! The crew was super nice!!!!!

The flight was provided by Aer Lingus and our seats were in a poor condition (15A & 15C). They looked like they needed repairing/replacing and were uncomfortable for such a long flight. Also the arm rests on Aer Lingus planes do not lift more than around 45 degrees, instead of the usual 90 degrees upright, meaning you cannot maximum the space between you & your travel companion so as to be more comfortable for such a long flight.

Flights were actually with Aer Lingus outward and American Airlines & Aer Lingus on the return journey. Outward flight with Aer Lingus was good but the return flight with them was not so good as our seats were in a poor condition (15A & 15C) and looked like they needed replacing! The American Airlines flight from Miami to JFK New York was good and the seats were very comfortable and spacious (32D & 32E)

Awful. Delay, lost vacation time and travel time now more than 24h

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

Boarding was as fast and efficient as possible. The flight crew were amazing and extremely friendly. We enjoyed our flight.

Very bed boarding, there was overbooked and make a lot of problems and noises

There was a problem in the luggage because there were not porters

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

Book cheap flights from Ontario to Athens

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Athens found on KAYAK in the last 72 hours.
7/16Tue
2 stops
44h 13mONT-ATH
$457
8/4Sun
1 stopKLM
17h 55mONT-ATH
$493
8/10Sat
3 stopsUnited Airlines
34h 10mONT-ATH
$499
8/3Sat
1 stopKLM
17h 55mONT-ATH
$553
8/2Fri
2 stopsAmerican Airlines
24h 39mONT-ATH
$593
8/2Fri
2 stopsBritish Airways
33h 46mONT-ATH
$657
7/16Tue
2 stopsAir Canada
26h 25mONT-ATH
$660
8/1Thu
2 stopsAmerican Airlines
25h 01mONT-ATH
$768
7/3Wed
2 stopsBritish Airways
29h 21mONT-ATH
$1,060
7/8Mon
3 stopsUnited Airlines
34h 10mONT-ATH
$1,148

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Last minute flights from Ontario to Athens

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ontario to Athens that are departing in the next 10 days.
6/16Sun
multi-stopAmerican Airlines
25h 40mONT-ATH
8/18Sun
multi-stopAmerican Airlines
35h 47mATH-ONT
$1,473
6/16Sun
multi-stopBritish Airways
19h 46mONT-ATH
6/26Wed
multi-stopBritish Airways
32h 37mATH-ONT
$1,481
6/15Sat
multi-stopBritish Airways
21h 25mONT-ATH
6/26Wed
multi-stopBritish Airways
32h 37mATH-ONT
$1,551
6/15Sat
multi-stopAmerican Airlines
19h 05mONT-ATH
8/17Sat
multi-stopAmerican Airlines
24h 07mATH-ONT
$1,736
6/12Wed
multi-stopKLM
17h 35mONT-ATH
6/18Tue
multi-stopKLM
20h 05mATH-ONT
$1,819
6/12Wed
multi-stopKLM
17h 35mONT-ATH
6/19Wed
multi-stopKLM
20h 05mATH-ONT
$1,876
6/16Sun
multi-stopAir Serbia
31h 16mONT-ATH
7/25Thu
multi-stopAir Serbia
40h 12mATH-ONT
$2,063
6/16Sun
multi-stopAir Serbia
29h 51mONT-ATH
7/16Tue
multi-stopAir Serbia
43h 18mATH-ONT
$2,134
6/14Fri
multi-stopIberia
45h 05mONT-ATH
7/19Fri
multi-stopIberia
36h 55mATH-ONT
$9,445
6/14Fri
multi-stopIberia
40h 26mONT-ATH
6/16Sun
multi-stopIberia
35h 44mATH-ONT
$9,745

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Ontario - Athens Flights

Departure:

Ontario (ONT)United States

Destination:

Athens (ATH)Greece

Return flight deals:

Athens - Ontario

Cabin classes:

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