What is the cheapest airline that flies from Ontario to Greece?

Iberia, British Airways, and United Airlines are the most popular carriers operating from Ontario to Greece

What airlines fly to Greece?

Norse Atlantic Airways, Turkish Airlines and United Airlines are the top three most popular airlines that fly to Greece from Ontario according to our data. Norse Atlantic Airways is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Greece. Keep in mind that there are 20 different airlines that fly to Greece on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Greece?

Prices for flights from Ontario Airport to Greece were last updated today.

How many operators does momondo search for flights from Ontario Airport to Greece?

As of November 2025, there is 1 operator available to choose from for flights from Ontario Airport to Greece.

How old do you have to be to fly from Ontario Airport to Greece?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Greece.

What documentation or ID do you need to fly to Greece?

The necessary travel and health documents for your Greece trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$270 Cheap Flights from Ontario to Greece in 2025/26

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Find the cheapest flights from Ontario to Greece

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

4:45 pm - 1:25 amONT-ATH

22h 40m2 stops

8:05 pm - 10:13 pmATH-ONT

36h 08m2 stops

$496British Airways

Find Deal

Sat, Jan 10 - Sat, Jan 24

6:39 pm - 1:40 amONT-ATH

21h 01m2 stops

6:30 am - 10:53 pmATH-ONT

26h 23m2 stops

$499United Airlines

Find Deal

Thu, Jan 15 - Sat, Jan 24

6:00 am - 1:35 pmONT-ATH

21h 35m2 stops

6:05 am - 9:05 pmATH-ONT

25h 00m2 stops

$500Delta

Find Deal

Sat, Jan 17 - Sat, Jan 24

10:59 am - 9:55 pmONT-ATH

24h 56m2 stops

3:55 pm - 1:57 pmATH-ONT

32h 02m2 stops

$501Multiple Airlines

Find Deal

Fri, Feb 13 - Fri, Feb 27

4:45 pm - 11:10 pmONT-ATH

20h 25m2 stops

7:45 am - 10:48 pmATH-ONT

25h 03m2 stops

$503American Airlines

Find Deal

Mon, Jan 12 - Mon, Jan 19

5:05 am - 12:00 pmONT-ATH

20h 55m3 stops

6:25 am - 10:53 pmATH-ONT

26h 28m2 stops

$504United Airlines

Find Deal

Mon, Jan 12 - Mon, Jan 19

10:58 am - 6:55 pmONT-ATH

21h 57m2 stops

7:35 am - 10:48 pmATH-ONT

25h 13m2 stops

$505Multiple Airlines

Find Deal

Mon, Jan 12 - Tue, Jan 20

1:24 pm - 4:35 pmONT-ATH

17h 11m2 stops

2:00 pm - 10:53 pmATH-ONT

18h 53m2 stops

$511United Airlines

Find Deal

Sun, Jan 11 - Sun, Jan 25

6:00 am - 1:15 amONT-ATH

33h 15m2 stops

12:50 pm - 11:13 amATH-ONT

32h 23m2 stops

$512Delta

Find Deal

Mon, Dec 1 - Wed, Dec 10

6:00 am - 12:50 pmONT-SKG

44h 50m2 stops

12:25 pm - 11:04 pmSKG-ONT

44h 39m2 stops

$675KLM

Find Deal

Wed, Dec 3 - Sun, Dec 7

British Airways flights from Ontario to Greece

Our best British Airways deals on Ontario to Greece flight tickets

British Airways

Jan 10

ONT4:45 pmOntario

22h 40m

2 stops

ATH1:25 amAthens Eleftherios V.

Jan 24

ATH8:05 pmAthens Eleftherios V.

36h 08m

2 stops

ONT10:13 pmOntario

$496

Find similar

British Airways

Feb 12

ONT10:59 amOntario

28h 26m

2 stops

ATH1:25 amAthens Eleftherios V.

Feb 27

ATH7:50 pmAthens Eleftherios V.

37h 01m

2 stops

ONT10:51 pmOntario

$525

Find similar

British Airways

Mar 1

ONT4:59 pmOntario

34h 21m

2 stops

ATH1:20 pmAthens Eleftherios V.

Mar 8

ATH7:50 pmAthens Eleftherios V.

34h 50m

2 stops

ONT9:40 pmOntario

$576

Find similar

United Airlines flights from Ontario to Greece

Our best United Airlines deals on Ontario to Greece flight tickets

United Airlines

Jan 15

ONT6:39 pmOntario

21h 01m

2 stops

ATH1:40 amAthens Eleftherios V.

Jan 24

ATH6:30 amAthens Eleftherios V.

26h 23m

2 stops

ONT10:53 pmOntario

$499

Find similar

United Airlines

Jan 12

ONT5:05 amOntario

20h 55m

3 stops

ATH12:00 pmAthens Eleftherios V.

Jan 19

ATH6:25 amAthens Eleftherios V.

26h 28m

2 stops

ONT10:53 pmOntario

$504

Find similar

United Airlines

Jan 11

ONT1:24 pmOntario

17h 11m

2 stops

ATH4:35 pmAthens Eleftherios V.

Jan 25

ATH2:00 pmAthens Eleftherios V.

18h 53m

2 stops

ONT10:53 pmOntario

$511

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sat 1/10

4:45 pm-1:25 am

2 stops22h 40m

Athens Eleftherios V.

Sat 1/24

8:05 pm-10:13 pm

2 stops36h 08m

$496

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 1/15

6:39 pm-1:40 am

2 stops21h 01m

Athens Eleftherios V.

Sat 1/24

6:30 am-10:53 pm

2 stops26h 23m

$499

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sat 1/17

6:00 am-1:35 pm

2 stops21h 35m

Athens Eleftherios V.

Sat 1/24

6:05 am-9:05 pm

2 stops25h 00m

$500

OntarioAthens

ONT - ATH

ONTATH

Ontario

Fri 2/13

10:59 am-9:55 pm

2 stops24h 56m

Athens Eleftherios V.

Fri 2/27

3:55 pm-1:57 pm

2 stops32h 02m

$501

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 1/12

4:45 pm-11:10 pm

2 stops20h 25m

Athens Eleftherios V.

Mon 1/19

7:45 am-10:48 pm

2 stops25h 03m

$503

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 1/12

5:05 am-12:00 pm

3 stops20h 55m

Athens Eleftherios V.

Mon 1/19

6:25 am-10:53 pm

2 stops26h 28m

$504

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 1/12

10:58 am-6:55 pm

2 stops21h 57m

Athens Eleftherios V.

Tue 1/20

7:35 am-10:48 pm

2 stops25h 13m

$505

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 1/11

1:24 pm-4:35 pm

2 stops17h 11m

Athens Eleftherios V.

Sun 1/25

2:00 pm-10:53 pm

2 stops18h 53m

$511

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 12/1

6:00 am-1:15 am

2 stops33h 15m

Athens Eleftherios V.

Wed 12/10

12:50 pm-11:13 am

2 stops32h 23m

$512

OntarioThessaloniki

ONT - SKG

ONTSKG

Ontario

Wed 12/3

6:00 am-12:50 pm

2 stops44h 50m

Thessaloniki Makedonia

Sun 12/7

12:25 pm-11:04 pm

2 stops44h 39m

$675

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Greece

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Greece?

According to our data, Tuesday is the cheapest day to fly to Greece from Ontario. The lowest ticket price found for a Tuesday departure recently was $740. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Ontario to Greece on a Thursday will generally be more expensive and average around $1,240. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Greece?

Flying to Greece from Ontario in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $815 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to Greece, so prices are often more expensive at around $1,089 per ticket.

Can stopping save me money on Ontario to Greece flights?

You could potentially save up to 9% on your flight if you consider stops on a Ontario to Greece flight.

Cheap Ontario to Greece flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Greece

Direct flights	None

There are no direct flights from Ontario to Greece. There are no popular flight routes from Ontario to Greece.

Search flight deals

When did momondo last update prices for flights from Ontario Airport to Greece?
Prices for flights from Ontario Airport to Greece were last updated today.
How many operators does momondo search for flights from Ontario Airport to Greece?
As of November 2025, there is 1 operator available to choose from for flights from Ontario Airport to Greece.
How old do you have to be to fly from Ontario Airport to Greece?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Greece.
What documentation or ID do you need to fly to Greece?
The necessary travel and health documents for your Greece trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ontario to Greece

Compare and see reviews for airlines that fly from Ontario to Greece with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $635	Free Cancellation	Rating 7.4 9,029 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Greece?

Finding the right flight to Greece from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Greece quick and easy, saving you time and money.

Can I find flights from Ontario to Greece with flexible booking policies on momondo?

Yes. All flights to Greece from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Greece?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Greece from Ontario.

I’m not ready to book a flight from Ontario to Greece right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Greece flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.