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$383+ Cheap flights from Ontario (ONT) to Greece

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ATH
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Ontario to Greece

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Greece (GR0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$547
(Delta)

One-way from

$383
(Kiwi.com)
From Ontario to Greece
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One-way flight from Ontario to Greece
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Find flight deals from Ontario to Greece

Cheapest flights from Ontario to Greece
Explore the most affordable flight options available from Ontario to Greece. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/255:40 amONT - ATH
2 stops23h 05mDelta
Wed 4/210:30 amATH - ONT
1 stop22h 13mDelta
Deal found 1/20$547
This oojo deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/510:56 amONT - ATH
2 stops21h 39mBritish Airways
Tue 2/187:55 pmATH - ONT
2 stops32h 40mBritish Airways
Deal found 1/20$556
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:00 amONT - ATH
2 stops44h 55mUnited Airlines
Wed 12/37:05 amATH - ONT
2 stops27h 05mUnited Airlines
Deal found 1/20$563
This United deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2010:36 amONT - ATH
2 stops19h 49mMultiple Airlines
Thu 3/62:20 pmATH - ONT
2 stops53h 34mMultiple Airlines
Deal found 1/20$673
This KLM deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/111:30 pmONT - ATH
2 stops18h 05mKLM
Wed 3/196:00 amATH - ONT
2 stops19h 42mKLM
Deal found 1/20$772
This KAYAK deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/222:54 pmONT - ATH
2 stops38h 21mIberia
Sun 3/23:55 pmATH - ONT
2 stops40h 21mIberia
Deal found 1/20$891
This Air Canada deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/45:10 amONT - ATH
3 stops25h 15mAir Canada
Sun 2/161:25 pmATH - ONT
3 stops41h 27mAir Canada
Deal found 1/20$1,067
This Air Serbia deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2511:37 pmONT - ATH
2 stops30h 03mAir Serbia
Sun 6/83:40 pmATH - ONT
2 stops40h 42mAir Serbia
Deal found 1/19$1,102
This KLM deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/27:00 amONT - SKG
2 stops20h 30mKLM
Fri 6/612:00 pmSKG - ONT
2 stops21h 45mKLM
Deal found 1/20$3,915

Find flights from Ontario to Greece within your budget

Customize your flight search to find flights from Ontario to Greece that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.

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Price

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 3/25

5:40 am-1:45 pm

2 stops23h 05m

Athens Eleftherios V.

Wed 4/2

10:30 am-10:43 pm

1 stop22h 13m

$547

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 2/5

10:56 am-6:35 pm

2 stops21h 39m

Athens Eleftherios V.

Tue 2/18

7:55 pm-6:35 pm

2 stops32h 40m

$556

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 2/11

10:47 am-12:55 am

2 stops28h 08m

Athens Eleftherios V.

Tue 2/18

12:50 pm-9:15 am

2 stops30h 25m

$569

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 2/20

10:36 am-4:25 pm

2 stops19h 49m

Athens Eleftherios V.

Thu 3/6

2:20 pm-9:54 am

2 stops53h 34m

$673

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 3/11

1:30 pm-4:35 pm

2 stops18h 05m

Athens Eleftherios V.

Wed 3/19

6:00 am-4:42 pm

2 stops19h 42m

$772

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sat 2/22

2:54 pm-3:15 pm

2 stops38h 21m

Athens Eleftherios V.

Sun 3/2

3:55 pm-10:16 pm

2 stops40h 21m

$891

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 2/4

5:10 am-4:25 pm

3 stops25h 15m

Athens Eleftherios V.

Sun 2/16

1:25 pm-8:52 pm

3 stops41h 27m

$1,067

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 5/25

11:37 pm-3:40 pm

2 stops30h 03m

Athens Eleftherios V.

Sun 6/8

3:40 pm-10:22 pm

2 stops40h 42m

$1,102

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 4/15

7:00 am-2:10 pm

2 stops21h 10m

Athens Eleftherios V.

Thu 4/24

10:30 am-10:41 pm

1 stop22h 11m

$1,138

OntarioThessaloniki

ONT - SKG

ONTSKG

Ontario

Mon 6/2

7:00 am-1:30 pm

2 stops20h 30m

Thessaloniki Makedonia

Fri 6/6

12:00 pm-11:45 pm

2 stops21h 45m

$3,915

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 19 results
1
2

Best time to book a flight from Ontario to Greece

Have a flexible travel schedule? Discover the best time to fly to Greece from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ontario to Greece

Get recent, data-driven insights about flights from Ontario to Greece including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ontario to Greece?

Currently, November is the cheapest month in which you can book a flight from Ontario to Greece (average of $679). Flying from Ontario to Greece in June is currently the most expensive (average of $1,424). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to GR?

Find hourly flight availability from Ontario to Greece. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Greece as you normally would.

Rainfall in Greece by month

Plan your trip to Greece by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Greece ranges from 0.2 - 2.5 inches per month. December is typically the wettest month, when rainfall can reach 2.5 in. June is typically the driest time to visit Greece when rainfall is around 0.2 in.

Temperature in Greece by month

Plan your trip to Greece by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Greece, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Greece

Get insights into the airlines that provide service to Greece. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Greece. Reviews last updated January 21, 2025.
Peruse reviews from past customers who have flown with British Airways, United Airlines and KLM from Ontario to Greece to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,490 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,985 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Canada
7.0
Good
8,635 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Greece. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Greece?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Greece. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • What are the cheapest airlines to fly from Ontario to Greece one-way?

    $439 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on British Airways and Iberia, with prices starting from $449 and $451, respectively.

  • Can I find deals for flights from Ontario to Greece that include hotel bookings?

    Yes. In addition to deals on Ontario to Greece flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Greece?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Greece.

  • Can I find deals for business class flights from Ontario to Greece?

    Yes. Cheapflights offers flight deals from Ontario to Greece by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Greece?

    Currently, November is the cheapest month in which you can book a flight from Ontario to Greece (average of $679). Flying from Ontario to Greece in June is currently the most expensive (average of $1,424). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 5 airlines flying from Ontario to Greece

Discover the top 5 airlines that operate flights from Ontario to Greece. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$550Average$1,085FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$552Average$825FlexibilityNo cancel feeOn-time71%
DeltaCheapest$584Average$812FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$601Average$933FlexibilityNo cancel feeOn-time70%
KLMCheapest$618Average$1,225FlexibilityNo cancel feeOn-time75%
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