Greece

$439+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ATH
Feb 11 — Feb 181
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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 February 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$536
(United Airlines)

One-way from

$439
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$631
Provider with most accurate pricing for Los Angeles-Athens Eleftherios V. flight deals.
Provider most trusted by Cheapflights users for Los Angeles-Athens Eleftherios V. flights.
From Ontario to Greece
One-way flight from Ontario to Greece
Highest demand for flights based on searches. 29% potential increase in price ($370 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($54 potential savings vs. average RT price).
Average for round-trip flights in February 2025

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 February 6, 2025.

This United Airlines deal was found by Cheapflights users on 2/6. 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.
Tue 3/186:00 amONT - ATH
2 stops18h 10mUnited Airlines
Tue 4/110:25 amATH - ONT
2 stops21h 33mUnited Airlines
Deal found 2/6$536
This Delta deal was found by Cheapflights users on 2/6. 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 3/1812:46 pmONT - ATH
2 stops27h 19mDelta
Tue 4/110:30 amATH - ONT
1 stop22h 13mDelta
Deal found 2/6$554
This Air Canada deal was found by Cheapflights users on 2/6. 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 4/16:00 amONT - ATH
2 stops19h 10mMultiple Airlines
Tue 4/151:10 pmATH - ONT
2 stops41h 32mMultiple Airlines
Deal found 2/6$570
This KLM deal was found by Cheapflights users on 2/6. 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 4/112:46 pmONT - ATH
2 stops26h 34mKLM
Tue 4/1510:30 amATH - ONT
1 stop22h 11mKLM
Deal found 2/6$596
This Tripair deal was found by Cheapflights users on 2/6. 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 Tripair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/161:30 pmONT - SKG
2 stops38h 20mKLM
Mon 3/311:40 pmSKG - ONT
2 stops36h 54mKLM
Deal found 2/6$604
This British Airways deal was found by Cheapflights users on 2/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/202:54 pmONT - ATH
2 stops24h 21mBritish Airways
Thu 2/277:50 pmATH - ONT
2 stops32h 45mBritish Airways
Deal found 2/6$673
This United deal was found by Cheapflights users on 2/6. 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.
Fri 3/75:05 amONT - SKG
2 stops32h 10mMultiple Airlines
Sun 3/163:00 pmSKG - ONT
2 stops38h 10mMultiple Airlines
Deal found 2/6$984
This oojo deal was found by Cheapflights users on 2/5. 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 2/1910:51 amONT - ATH
2 stops18h 24mIberia
Mon 2/243:55 pmATH - ONT
2 stops40h 21mIberia
Deal found 2/5$1,031
This Air Serbia deal was found by Cheapflights users on 2/5. 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.
Tue 5/2710:40 pmONT - ATH
2 stops42h 45mAir Serbia
Tue 6/104:30 amATH - ONT
2 stops26h 52mAir Serbia
Deal found 2/5$1,104
This Air Canada deal was found by Cheapflights users on 2/6. 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.
Sun 3/95:05 amONT - ATH
3 stops23h 25mAir Canada
Sat 3/157:00 amATH - ONT
3 stops46h 57mAir Canada
Deal found 2/6$1,425

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 February 6, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 3/18

6:00 am-9:10 am

2 stops18h 10m

Athens Eleftherios V.

Tue 4/1

10:25 am-9:58 pm

2 stops21h 33m

$536

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 3/18

12:46 pm-1:05 am

2 stops27h 19m

Athens Eleftherios V.

Tue 4/1

10:30 am-10:43 pm

1 stop22h 13m

$554

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 4/1

6:00 am-11:10 am

2 stops19h 10m

Athens Eleftherios V.

Tue 4/15

1:10 pm-8:42 pm

2 stops41h 32m

$570

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 4/1

12:46 pm-1:20 am

2 stops26h 34m

Athens Eleftherios V.

Tue 4/15

10:30 am-10:41 pm

1 stop22h 11m

$596

OntarioThessaloniki

ONT - SKG

ONTSKG

Ontario

Sun 3/16

1:30 pm-12:50 pm

2 stops38h 20m

Thessaloniki Makedonia

Mon 3/31

1:40 pm-4:34 pm

2 stops36h 54m

$604

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 2/20

2:54 pm-1:15 am

2 stops24h 21m

Athens Eleftherios V.

Thu 2/27

7:50 pm-6:35 pm

2 stops32h 45m

$673

OntarioThessaloniki

ONT - SKG

ONTSKG

Ontario

Fri 3/7

5:05 am-11:15 pm

2 stops32h 10m

Thessaloniki Makedonia

Sun 3/16

3:00 pm-8:10 pm

2 stops38h 10m

$984

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 2/19

10:51 am-3:15 pm

2 stops18h 24m

Athens Eleftherios V.

Mon 2/24

3:55 pm-10:16 pm

2 stops40h 21m

$1,031

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 5/27

10:40 pm-3:25 am

2 stops42h 45m

Athens Eleftherios V.

Tue 6/10

4:30 am-9:22 pm

2 stops26h 52m

$1,104

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 3/9

5:05 am-1:30 pm

3 stops23h 25m

Athens Eleftherios V.

Sat 3/15

7:00 am-8:57 pm

3 stops46h 57m

$1,425

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/6

Showing 1-10 of 18 results
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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 $1,406). 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 February 6, 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 February 6, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and United Airlines 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.
8.0
Very good

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

8.0
Very good
8.0
Very good

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

8.0
Very good

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

8.0
Very good

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

8.0
Very good

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

8.0
Very good

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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 $441 and $508, 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 $1,406). 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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