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

The cheapest airlines for a one-way flight from Greece to Ontario are Air Serbia ($646), Qatar Airways ($720), and American Airlines ($804).

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

Travelers have found it’s best to book a flight 39 days in advance to save up to 19% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 39 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Greece to Ontario 1-2 weeks in advance for as low as $840, or $1,041 for flights within the next 24 hours.

What is the cheapest month to fly from Greece to Ontario?

Flights from Greece to Ontario lean towards being more expensive in July. Prices are generally better when you fly from Greece to Ontario in March, with the cheapest ticket starting at $682.

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

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

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

Most people fly into Ontario (ONT) if they book a flight to Ontario from Greece. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

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

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

How can I find direct flights from Greece to Ontario?

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

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

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

$1,335+ Flights from Greece to Ontario

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Cheap flight deals from Greece to Ontario

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$831 (United Airlines)
One-way from	$646 (Air Serbia)
Popular in	July
Cheapest in	March
Average price	$834

Provider with most accurate pricing for Athens Eleftherios V.-Los Angeles flight deals.

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Provider most trusted by Cheapflights users for Athens Eleftherios V.-Los Angeles flights.

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From Greece to Ontario

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One-way flight from Greece to Ontario

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($91 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).

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Average for round-trip flights in February 2025

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Find flight deals from Greece to Ontario

Cheapest flights from Greece to Ontario
Explore the most affordable flight options available from Greece to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Mon 3/247:00 amATH - ONT

2 stops22h 10mUnited Airlines

Wed 4/26:00 amONT - ATH

2 stops17h 55mUnited Airlines

Deal found 2/20

$831

Sat 5/1010:30 amATH - ONT

1 stop19h 12mKLM

Fri 5/1610:59 pmONT - ATH

1 stop25h 56mKLM

Deal found 2/20

$1,120

Sun 3/21:15 pmATH - ONT

2 stops39h 04mQatar Airways

Mon 4/2111:33 amONT - ATH

2 stops38h 52mQatar Airways

Deal found 2/20

$1,680

Best flights from Greece to Ontario
Discover carefully curated flight deals from Greece to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Mon 3/247:00 amATH - ONT

2 stops22h 10mUnited Airlines

Wed 4/26:00 amONT - ATH

2 stops17h 55mUnited Airlines

Deal found 2/20

$831

Sat 5/1010:30 amATH - ONT

1 stop19h 12mKLM

Fri 5/1610:59 pmONT - ATH

1 stop25h 56mKLM

Deal found 2/20

$1,120

Sun 3/21:15 pmATH - ONT

2 stops39h 04mQatar Airways

Mon 4/2111:33 amONT - ATH

2 stops38h 52mQatar Airways

Deal found 2/20

$1,680

Last-minute flights from Greece to Ontario
Discover last-minute flight deals from Greece to Ontario. Data last updated February 20, 2025 and is based on user searches.

Sat 3/16:25 amATH - ONT

2 stops24h 27mUnited Airlines

Mon 4/216:10 amONT - ATH

2 stops21h 50mUnited Airlines

Deal found 2/20

$1,505

Sun 3/21:15 pmATH - ONT

2 stops39h 04mQatar Airways

Mon 4/2111:33 amONT - ATH

2 stops38h 52mQatar Airways

Deal found 2/20

$1,680

Mon 3/247:00 amATH - ONT

2 stops22h 10mUnited Airlines

Wed 4/26:00 amONT - ATH

2 stops17h 55mUnited Airlines

Deal found 2/20

$831

One-way flights from Greece to Ontario
Search for one-way flight options from Greece to Ontario. Find affordable one-way fares based on user searches. Data last updated February 20, 2025.

Tue 6/104:25 pmATH - ONT

2 stops38h 57mAir Serbia

Deal found 2/20

$646

Fri 5/231:55 pmATH - ONT

2 stops42h 51mQatar Airways

Deal found 2/20

$720

Thu 6/266:55 amATH - ONT

2 stops24h 48mAmerican Airlines

Deal found 2/19

$804

Fri 5/239:10 amATH - ONT

1 stop20h 32mDelta

Deal found 2/20

$814

Sun 4/2010:30 amATH - ONT

1 stop22h 06mKLM

Deal found 2/20

$819

Mon 4/77:30 pmATH - ONT

2 stops36h 28mBritish Airways

Deal found 2/20

$822

Sun 4/63:40 amATH - ONT

2 stops28h 30mIberia

Deal found 2/20

$963

Sun 7/273:55 amATH - ONT

2 stops28h 42mMultiple Airlines

Deal found 2/20

$1,011

Mon 6/212:35 pmATH - ONT

1 stop20h 16mUnited Airlines

Deal found 2/20

$1,913

Tue 6/32:25 pmATH - ONT

3 stops32h 06mAir Canada

Deal found 2/20

$2,106

Sat 4/2610:30 amATH - ONT

1 stop22h 06mAir France

Deal found 2/20

$4,449

Find flights from Greece to Ontario within your budget

Fly from

Fly to

Route

Depart

Return

Price

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Mon 3/24

7:00 am-8:10 pm

2 stops22h 10m

Ontario

Wed 4/2

6:00 am-9:55 am

2 stops17h 55m

$831

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Sat 5/10

10:30 am-7:42 pm

1 stop19h 12m

Ontario

Fri 5/16

10:59 pm-10:55 am

1 stop25h 56m

$1,120

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Sun 3/2

1:15 pm-6:19 pm

2 stops39h 04m

Ontario

Mon 4/21

11:33 am-12:25 pm

2 stops38h 52m

$1,680

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Tue 6/10

4:25 pm-9:22 pm

2 stops38h 57m

$646

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Fri 5/23

1:55 pm-10:46 pm

2 stops42h 51m

$720

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Thu 6/26

6:55 am-9:43 pm

2 stops24h 48m

$804

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Fri 5/23

9:10 am-7:42 pm

1 stop20h 32m

$814

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Sun 4/20

10:30 am-10:36 pm

1 stop22h 06m

$819

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Mon 4/7

7:30 pm-9:58 pm

2 stops36h 28m

$822

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Sun 4/6

3:40 am-10:10 pm

2 stops28h 30m

$963

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 14 results

Best time to book a flight from Greece to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Greece 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 Greece to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Greece to Ontario (average of $246). Flying from Greece to Ontario in March is currently the most expensive (average of $315). 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.

Rainfall in Ontario by month

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

8,220 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,333 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Qatar Airways

7.4

Good

3,609 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.4

Good

1,449 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,766 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What airport do you fly into for flights to Ontario from Greece?
Most people fly into Ontario (ONT) if they book a flight to Ontario from Greece. Ontario is conveniently located just 3.1 mi from Ontario’s city center.
What are the cheapest airlines to fly from Greece to Ontario one-way?
The cheapest airlines for a one-way flight from Greece to Ontario are Air Serbia ($646), Qatar Airways ($720), and American Airlines ($804).
Can I find deals for flights from Greece to Ontario that include hotel bookings?
Yes. In addition to deals on Greece to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Greece to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Greece to Ontario.
Can I find deals for business class flights from Greece to Ontario?
Yes. Cheapflights offers flight deals from Greece to Ontario 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 Greece to Ontario?
Currently, August is the cheapest month in which you can book a flight from Greece to Ontario (average of $246). Flying from Greece to Ontario in March is currently the most expensive (average of $315). 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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$646+ Cheap flights from Greece to Ontario (ONT)

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Greece to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Greece to Ontario

Keep the following information in mind while searching for Greece to Ontario flight deals. Data was last updated February 20, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Greece to Ontario

Cheapest flights from Greece to OntarioExplore the most affordable flight options available from Greece to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Explore the most affordable flight options available from Greece to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Find flights from Greece to Ontario within your budget

Best time to book a flight from Greece to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Greece with our price prediction graph.

Travel insights for flights from Greece to Ontario

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

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

Rainfall in Ontario by month

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

Temperature in Ontario by month

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

Reviews of airlines servicing Ontario

Related info for your journey

Find useful and relevant information for your journey from Greece to Ontario. 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 into for flights to Ontario from Greece?

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

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

How can I find direct flights from Greece to Ontario?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Greece to Ontario

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Cheapest flights from Greece to Ontario
Explore the most affordable flight options available from Greece to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.