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

Delta, Air Canada, and United Airlines are the most popular carriers operating from Ontario to Greece

What airlines fly to Greece?

Turkish Airlines, United Airlines and Lufthansa are the top three most popular airlines that fly to Greece from Ontario according to our data. Turkish Airlines is the first choice among our users, with 28% of people opting to fly with this airline when traveling to Greece. Keep in mind that there are 19 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 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.

$379 Cheap Flights from Ontario to Greece in 2026/27

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.

6:35 pm - 11:00 amONT Ontario-ATH Athens Eleftherios V.

30h 25m3 stops San Francisco Boston Logan Intl Montreal Pierre Elliott Trudeau Intl

6:45 am - 8:32 pmATH Athens Eleftherios V.-ONT Ontario

23h 47m2 stops Frankfurt am Main Denver Intl

$835United Airlines

Tue, Mar 2 - Fri, Mar 5

7:00 am - 4:35 pmONT Ontario-ATH Athens Eleftherios V.

23h 35m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

6:10 am - 4:12 pmATH Athens Eleftherios V.-ONT Ontario

20h 02m2 stops Amsterdam Schiphol Salt Lake City

$841Delta

Sun, Feb 7 - Tue, Feb 16

6:30 am - 11:00 amONT Ontario-ATH Athens Eleftherios V.

42h 30m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

6:45 am - 8:32 pmATH Athens Eleftherios V.-ONT Ontario

23h 47m2 stops Frankfurt am Main Denver Intl

$841United Airlines

Tue, Mar 2 - Fri, Mar 5

6:00 am - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

24h 30m2 stops San Francisco Frankfurt am Main

6:45 am - 8:20 pmATH Athens Eleftherios V.-ONT Ontario

23h 35m2 stops Frankfurt am Main Denver Intl

$850United Airlines

Tue, Mar 2 - Fri, Mar 5

6:35 pm - 9:20 pmONT Ontario-ATH Athens Eleftherios V.

40h 45m2 stops San Francisco Frankfurt am Main

1:00 pm - 12:42 pmATH Athens Eleftherios V.-ONT Ontario

33h 42m2 stops Montreal Pierre Elliott Trudeau Intl Denver Intl

$855United Airlines

Tue, Mar 2 - Fri, Mar 5

12:00 pm - 4:35 pmONT Ontario-ATH Athens Eleftherios V.

18h 35m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

5:55 am - 4:12 pmATH Athens Eleftherios V.-ONT Ontario

20h 17m2 stops Amsterdam Schiphol Salt Lake City

$891KLM

Sun, Jan 24 - Sun, Jan 31

12:00 pm - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

18h 30m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

6:10 am - 4:12 pmATH Athens Eleftherios V.-ONT Ontario

20h 02m2 stops Amsterdam Schiphol Salt Lake City

$891KLM

Sat, Feb 6 - Tue, Feb 16

12:00 pm - 4:35 pmONT Ontario-ATH Athens Eleftherios V.

18h 35m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

6:10 am - 4:12 pmATH Athens Eleftherios V.-ONT Ontario

20h 02m2 stops Amsterdam Schiphol Salt Lake City

$891KLM

Thu, Jan 21 - Thu, Feb 4

12:00 pm - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

18h 30m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

6:10 am - 4:12 pmATH Athens Eleftherios V.-ONT Ontario

20h 02m2 stops Amsterdam Schiphol Salt Lake City

$891Delta

Fri, Feb 5 - Tue, Feb 16

2:08 pm - 7:55 pmONT Ontario-ATH Athens Eleftherios V.

19h 47m2 stops Dallas/Fort Worth London Heathrow

7:30 am - 9:59 pmATH Athens Eleftherios V.-ONT Ontario

24h 29m2 stops London Heathrow Phoenix Sky Harbor Intl

$892British Airways

Sun, Apr 11 - Fri, Apr 23

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United Airlines flights from Ontario to Greece

Our best United Airlines deals on Ontario to Greece flight tickets

United Airlines

Mar 2

ONT6:35 pmOntario

30h 25m

3 stops

ATH11:00 amAthens Eleftherios V.

Mar 5

ATH6:45 amAthens Eleftherios V.

23h 47m

2 stops

ONT8:32 pmOntario

$835

United Airlines

Mar 2

ONT6:30 amOntario

42h 30m

2 stops

ATH11:00 amAthens Eleftherios V.

Mar 5

ATH6:45 amAthens Eleftherios V.

23h 47m

2 stops

ONT8:32 pmOntario

$841

United Airlines

Mar 2

ONT6:00 amOntario

24h 30m

2 stops

ATH4:30 pmAthens Eleftherios V.

Mar 5

ATH6:45 amAthens Eleftherios V.

23h 35m

2 stops

ONT8:20 pmOntario

$850

KLM flights from Ontario to Greece

Our best KLM deals on Ontario to Greece flight tickets

KLM

Jan 24

ONT12:00 pmOntario

18h 35m

2 stops

ATH4:35 pmAthens Eleftherios V.

Jan 31

ATH5:55 amAthens Eleftherios V.

20h 17m

2 stops

ONT4:12 pmOntario

$891

KLM

Jan 20

ONT12:00 pmOntario

18h 30m

2 stops

ATH4:30 pmAthens Eleftherios V.

Feb 3

ATH6:10 amAthens Eleftherios V.

20h 02m

2 stops

ONT4:12 pmOntario

$911

KLM

Nov 22

ONT6:00 amOntario

17h 35m

2 stops

ATH9:35 amAthens Eleftherios V.

Dec 8

ATH6:10 amAthens Eleftherios V.

20h 12m

2 stops

ONT4:22 pmOntario

$947

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Tue 3/2

6:35 pm-11:00 am

3 stops30h 25m

Athens Eleftherios V.

Fri 3/5

6:45 am-8:32 pm

2 stops23h 47m

$835

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Sun 2/7

7:00 am-4:35 pm

2 stops23h 35m

Athens Eleftherios V.

Tue 2/16

6:10 am-4:12 pm

2 stops20h 02m

$841

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Tue 3/2

6:30 am-11:00 am

2 stops42h 30m

Athens Eleftherios V.

Fri 3/5

6:45 am-8:32 pm

2 stops23h 47m

$841

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Tue 3/2

6:00 am-4:30 pm

2 stops24h 30m

Athens Eleftherios V.

Fri 3/5

6:45 am-8:20 pm

2 stops23h 35m

$850

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Tue 3/2

6:35 pm-9:20 pm

2 stops40h 45m

Athens Eleftherios V.

Fri 3/5

1:00 pm-12:42 pm

2 stops33h 42m

$855

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Sun 1/24

12:00 pm-4:35 pm

2 stops18h 35m

Athens Eleftherios V.

Sun 1/31

5:55 am-4:12 pm

2 stops20h 17m

$891

Quickest round-trip

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Sat 2/6

12:00 pm-4:30 pm

2 stops18h 30m

Athens Eleftherios V.

Tue 2/16

6:10 am-4:12 pm

2 stops20h 02m

$891

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Thu 1/21

12:00 pm-4:35 pm

2 stops18h 35m

Athens Eleftherios V.

Thu 2/4

6:10 am-4:12 pm

2 stops20h 02m

$891

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Fri 2/5

12:00 pm-4:30 pm

2 stops18h 30m

Athens Eleftherios V.

Tue 2/16

6:10 am-4:12 pm

2 stops20h 02m

$891

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Sun 4/11

2:08 pm-7:55 pm

2 stops19h 47m

Athens Eleftherios V.

Fri 4/23

7:30 am-9:59 pm

2 stops24h 29m

$892

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 32% 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

Best Price Found	$379
Fastest flight time	17h 35m
Direct flights	None

The best one-way flight to Greece from Ontario in the past 72 hours is $379. The best round-trip flight deal from Ontario to Greece found on momondo in the last 72 hours is $835.

The fastest flight from Ontario to Greece takes 17h 35m

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 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.

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.