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

United Airlines, British Airways, and Delta 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 October 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.

$424 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.

6:00 am - 11:35 amONT-ATH

19h 35m2 stops

6:35 am - 5:37 pmATH-ONT

21h 02m2 stops

$543United Airlines

Find Deal

Wed, Nov 12 - Wed, Dec 3

5:40 am - 6:05 pmONT-ATH

26h 25m2 stops

2:05 pm - 10:57 pmATH-ONT

18h 52m2 stops

$549United Airlines

Find Deal

Fri, Feb 13 - Fri, Feb 27

5:40 am - 6:05 pmONT-ATH

26h 25m2 stops

6:05 am - 10:57 pmATH-ONT

26h 52m3 stops

$550United Airlines

Find Deal

Fri, Feb 13 - Fri, Feb 27

10:47 am - 7:15 pmONT-ATH

22h 28m2 stops

7:15 am - 10:15 pmATH-ONT

25h 00m2 stops

$551Multiple Airlines

Find Deal

Fri, Nov 28 - Sun, Dec 7

5:03 pm - 1:25 amONT-ATH

22h 22m2 stops

7:45 am - 10:37 pmATH-ONT

24h 52m2 stops

$554Multiple Airlines

Find Deal

Thu, Feb 12 - Fri, Feb 27

5:03 pm - 1:25 amONT-ATH

22h 22m2 stops

7:45 am - 9:40 pmATH-ONT

23h 55m2 stops

$556British Airways

Find Deal

Thu, Feb 12 - Fri, Feb 27

5:03 pm - 1:25 amONT-ATH

22h 22m2 stops

7:45 am - 9:40 pmATH-ONT

23h 55m2 stops

$557British Airways

Find Deal

Thu, Feb 12 - Fri, Feb 27

1:00 pm - 4:35 pmONT-ATH

18h 35m2 stops

3:25 am - 5:15 pmATH-ONT

22h 50m2 stops

$598Delta

Find Deal

Tue, Mar 10 - Mon, Mar 16

10:25 pm - 12:50 pmONT-SKG

28h 25m2 stops

12:25 pm - 11:04 pmSKG-ONT

44h 39m2 stops

$607KLM

Find Deal

Wed, Nov 12 - Sun, Nov 16

11:44 am - 4:35 pmONT-ATH

18h 51m2 stops

6:05 am - 5:07 pmATH-ONT

21h 02m2 stops

$736KLM

Find Deal

Wed, Nov 26 - Wed, Dec 10

United Airlines flights from Ontario to Greece

Our best United Airlines deals on Ontario to Greece flight tickets

United Airlines

Nov 12

ONT6:00 amOntario

19h 35m

2 stops

ATH11:35 amAthens Eleftherios V.

Dec 3

ATH6:35 amAthens Eleftherios V.

21h 02m

2 stops

ONT5:37 pmOntario

$543

Find similar

United Airlines

Feb 13

ONT5:40 amOntario

26h 25m

2 stops

ATH6:05 pmAthens Eleftherios V.

Feb 27

ATH2:05 pmAthens Eleftherios V.

18h 52m

2 stops

ONT10:57 pmOntario

$549

Find similar

United Airlines

Feb 13

ONT5:40 amOntario

26h 25m

2 stops

ATH6:05 pmAthens Eleftherios V.

Feb 27

ATH6:05 amAthens Eleftherios V.

26h 52m

3 stops

ONT10:57 pmOntario

$550

Find similar

British Airways flights from Ontario to Greece

Our best British Airways deals on Ontario to Greece flight tickets

British Airways

Feb 12

ONT5:03 pmOntario

22h 22m

2 stops

ATH1:25 amAthens Eleftherios V.

Feb 27

ATH7:45 amAthens Eleftherios V.

23h 55m

2 stops

ONT9:40 pmOntario

$556

Find similar

British Airways

Feb 12

ONT5:03 pmOntario

22h 22m

2 stops

ATH1:25 amAthens Eleftherios V.

Feb 27

ATH7:45 amAthens Eleftherios V.

23h 55m

2 stops

ONT9:40 pmOntario

$557

Find similar

British Airways

Jan 21

ONT4:49 pmOntario

22h 16m

2 stops

ATH1:05 amAthens Eleftherios V.

Jan 25

ATH8:00 amAthens Eleftherios V.

24h 49m

2 stops

ONT10:49 pmOntario

$768

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 11/12

6:00 am-11:35 am

2 stops19h 35m

Athens Eleftherios V.

Wed 12/3

6:35 am-5:37 pm

2 stops21h 02m

$543

OntarioAthens

ONT - ATH

ONTATH

Ontario

Fri 2/13

5:40 am-6:05 pm

2 stops26h 25m

Athens Eleftherios V.

Fri 2/27

2:05 pm-10:57 pm

2 stops18h 52m

$549

OntarioAthens

ONT - ATH

ONTATH

Ontario

Fri 2/13

5:40 am-6:05 pm

2 stops26h 25m

Athens Eleftherios V.

Fri 2/27

6:05 am-10:57 pm

3 stops26h 52m

$550

OntarioAthens

ONT - ATH

ONTATH

Ontario

Fri 11/28

10:47 am-7:15 pm

2 stops22h 28m

Athens Eleftherios V.

Sun 12/7

7:15 am-10:15 pm

2 stops25h 00m

$551

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 2/12

5:03 pm-1:25 am

2 stops22h 22m

Athens Eleftherios V.

Fri 2/27

7:45 am-10:37 pm

2 stops24h 52m

$554

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 2/12

5:03 pm-1:25 am

2 stops22h 22m

Athens Eleftherios V.

Fri 2/27

7:45 am-9:40 pm

2 stops23h 55m

$556

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 2/12

5:03 pm-1:25 am

2 stops22h 22m

Athens Eleftherios V.

Fri 2/27

7:45 am-9:40 pm

2 stops23h 55m

$557

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 3/10

1:00 pm-4:35 pm

2 stops18h 35m

Athens Eleftherios V.

Mon 3/16

3:25 am-5:15 pm

2 stops22h 50m

$598

OntarioThessaloniki

ONT - SKG

ONTSKG

Ontario

Wed 11/12

10:25 pm-12:50 pm

2 stops28h 25m

Thessaloniki Makedonia

Sun 11/16

12:25 pm-11:04 pm

2 stops44h 39m

$607

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 11/26

11:44 am-4:35 pm

2 stops18h 51m

Athens Eleftherios V.

Wed 12/10

6:05 am-5:07 pm

2 stops21h 02m

$736

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 month to fly to Greece?

In general, February is the cheapest month to fly from Ontario to Greece. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $601. If you are unable to visit Greece during the month of February, then departing from Ontario during the month September is also very affordable. Most momondo users find prices during this month for around $660.

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 October 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 8,940 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.