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

British Airways, KLM, 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 35% 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 April 2026, 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.

$365 Cheap Flights from Ontario to Greece in 2026

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Find the cheapest flights from Ontario to Greece

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:00 am - 1:25 pm

ONT

ATH

22h 25m

2 stops

12:10 pm - 8:52 pm

ATH

ONT

42h 42m

2 stops

$803Air Canada

Sun, Aug 16 - Fri, Sep 4

7:00 am - 10:35 am

ONT

ATH

17h 35m

1 stop

12:35 pm - 10:26 pm

ATH

ONT

19h 51m

1 stop

$814United Airlines

Sun, Oct 11 - Tue, Oct 20

5:00 am - 10:10 am

ONT

ATH

19h 10m

2 stops

12:35 pm - 10:26 pm

ATH

ONT

19h 51m

1 stop

$817United Airlines

Sun, Oct 11 - Tue, Oct 20

5:00 am - 10:10 am

ONT

ATH

19h 10m

2 stops

12:35 pm - 10:26 pm

ATH

ONT

19h 51m

1 stop

$818United Airlines

Tue, Sep 29 - Thu, Oct 15

11:59 pm - 11:45 am

ONT

ATH

25h 46m

1 stop

2:00 pm - 6:58 pm

ATH

ONT

38h 58m

1 stop

$821British Airways

Sat, Aug 15 - Fri, Sep 4

7:00 am - 10:35 am

ONT

ATH

17h 35m

1 stop

10:25 am - 8:52 pm

ATH

ONT

20h 27m

2 stops

$825United Airlines

Sun, Aug 16 - Thu, Sep 3

4:54 pm - 1:00 pm

ONT

SKG

34h 06m

2 stops

2:30 pm - 5:48 pm

SKG

ONT

37h 18m

2 stops

$991British Airways

Mon, Sep 7 - Thu, Sep 24

2:08 pm - 12:25 pm

ONT

SKG

36h 17m

2 stops

2:30 pm - 10:40 pm

SKG

ONT

42h 10m

2 stops

$1,156British Airways

Fri, May 8 - Thu, May 14

10:41 pm - 8:45 am

ONT

SKG

24h 04m

2 stops

9:15 pm - 8:47 pm

SKG

ONT

57h 32m

2 stops

$1,324Turkish Airlines

Mon, Jun 1 - Sun, Jun 7

10:41 pm - 3:40 pm

ONT

SKG

30h 59m

2 stops

4:25 am - 8:47 pm

SKG

ONT

26h 22m

2 stops

$1,349Air Serbia

Mon, May 25 - Mon, Jun 1

United Airlines flights from Ontario to Greece

Our best United Airlines deals on Ontario to Greece flight tickets

United Airlines

Oct 11

ONT7:00 amOntario

17h 35m

1 stop

ATH10:35 amAthens Eleftherios V.

Oct 20

ATH12:35 pmAthens Eleftherios V.

19h 51m

1 stop

ONT10:26 pmOntario

$814

United Airlines

Oct 11

ONT5:00 amOntario

19h 10m

2 stops

ATH10:10 amAthens Eleftherios V.

Oct 20

ATH12:35 pmAthens Eleftherios V.

19h 51m

1 stop

ONT10:26 pmOntario

$817

United Airlines

Sep 29

ONT5:00 amOntario

19h 10m

2 stops

ATH10:10 amAthens Eleftherios V.

Oct 15

ATH12:35 pmAthens Eleftherios V.

19h 51m

1 stop

ONT10:26 pmOntario

$818

Delta flights from Ontario to Greece

Our best Delta deals on Ontario to Greece flight tickets

Delta

Sep 7

ONT7:00 amOntario

17h 00m

1 stop

ATH10:00 amAthens Eleftherios V.

Sep 25

ATH9:45 amAthens Eleftherios V.

18h 16m

1 stop

ONT6:01 pmOntario

$882

Delta

Oct 1

ONT2:00 pmOntario

23h 00m

2 stops

ATH11:00 pmAthens Eleftherios V.

Oct 16

ATH9:45 amAthens Eleftherios V.

18h 33m

1 stop

ONT6:18 pmOntario

$946

Delta

Oct 1

ONT2:00 pmOntario

23h 00m

2 stops

ATH11:00 pmAthens Eleftherios V.

Oct 16

ATH10:05 amAthens Eleftherios V.

22h 38m

2 stops

ONT10:43 pmOntario

$951

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 8/16

5:00 am-1:25 pm

2 stops22h 25m

Athens Eleftherios V.

Fri 9/4

12:10 pm-8:52 pm

2 stops42h 42m

$803

Quickest round-trip

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 10/11

7:00 am-10:35 am

1 stop17h 35m

Athens Eleftherios V.

Tue 10/20

12:35 pm-10:26 pm

1 stop19h 51m

$814

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 10/11

5:00 am-10:10 am

2 stops19h 10m

Athens Eleftherios V.

Tue 10/20

12:35 pm-10:26 pm

1 stop19h 51m

$817

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 9/29

5:00 am-10:10 am

2 stops19h 10m

Athens Eleftherios V.

Thu 10/15

12:35 pm-10:26 pm

1 stop19h 51m

$818

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sat 8/15

11:59 pm-11:45 am

1 stop25h 46m

Athens Eleftherios V.

Fri 9/4

2:00 pm-6:58 pm

1 stop38h 58m

$821

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 8/16

7:00 am-10:35 am

1 stop17h 35m

Athens Eleftherios V.

Thu 9/3

10:25 am-8:52 pm

2 stops20h 27m

$825

OntarioThessaloniki

ONT - SKG

ONTSKG

Ontario

Mon 9/7

4:54 pm-1:00 pm

2 stops34h 06m

Thessaloniki Makedonia

Thu 9/24

2:30 pm-5:48 pm

2 stops37h 18m

$991

OntarioThessaloniki

ONT - SKG

ONTSKG

Ontario

Fri 5/8

2:08 pm-12:25 pm

2 stops36h 17m

Thessaloniki Makedonia

Thu 5/14

2:30 pm-10:40 pm

2 stops42h 10m

$1,156

OntarioThessaloniki

ONT - SKG

ONTSKG

Ontario

Mon 6/1

10:41 pm-8:45 am

2 stops24h 04m

Thessaloniki Makedonia

Sun 6/7

9:15 pm-8:47 pm

2 stops57h 32m

$1,324

OntarioThessaloniki

ONT - SKG

ONTSKG

Ontario

Mon 5/25

10:41 pm-3:40 pm

2 stops30h 59m

Thessaloniki Makedonia

Mon 6/1

4:25 am-8:47 pm

2 stops26h 22m

$1,349

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

Can stopping save me money on Ontario to Greece flights?

You could potentially save up to 27% 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

Fastest flight time	16h 15m
Direct flights	None

The fastest flight from Ontario to Greece takes 16h 15m

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

Search flight deals

Frequently asked questions about flying from Ontario to Greece

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 April 2026, 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 $588	Free Cancellation	Rating 7.4 9,589 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.