What airlines fly to Athens?

Norse Atlantic Airways, Turkish Airlines and United Airlines are the top three most popular airlines that fly to Athens from Ontario according to our data. Norse Atlantic Airways is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Athens. Keep in mind that there are 18 different airlines that fly to Athens on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Athens Eleftherios V.?

British Airways and KLM are the most popular carriers operating from Ontario to Athens Eleftherios V.

When did momondo last update prices for flights from Ontario Airport to Athens Eleftherios V. Airport?

Prices for flights from Ontario Airport to Athens Eleftherios V. Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Ontario Airport to Athens Eleftherios V. Airport?

As of January 2026, there is 1 operator available to choose from for flights from Ontario Airport to Athens Eleftherios V. Airport.

How old do you have to be to fly from Ontario Airport to Athens Eleftherios V. Airport?

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 Athens Eleftherios V. Airport.

What documentation or ID do you need to fly to Athens Eleftherios V. Airport?

The required travel and health documents for your Athens Eleftherios V. Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Athens Eleftherios V. Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$242 Cheap Flights from Ontario to Athens in 2026

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Find the cheapest flights from Ontario to Athens

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:09 pm - 1:05 am

ONT

ATH

23h 56m2 stops

8:20 pm - 10:07 pm

ATH

ONT

35h 47m2 stops

$441British Airways

Wed, Jan 28 - Wed, Feb 11

4:45 pm - 1:35 pm

ONT

ATH

34h 50m2 stops

7:45 am - 10:07 pm

ATH

ONT

24h 22m2 stops

$466British Airways

Fri, Feb 6 - Fri, Feb 13

5:02 pm - 1:05 am

ONT

ATH

23h 03m2 stops

7:25 am - 11:59 pm

ATH

ONT

26h 34m2 stops

$491British Airways

Wed, Mar 18 - Mon, Mar 30

2:39 pm - 1:25 am

ONT

ATH

24h 46m2 stops

7:55 pm - 10:19 pm

ATH

ONT

35h 24m2 stops

$496British Airways

Thu, Mar 5 - Tue, Mar 10

1:53 pm - 1:40 am

ONT

ATH

25h 47m2 stops

6:30 am - 9:59 pm

ATH

ONT

25h 29m2 stops

$502United Airlines

Sat, Feb 21 - Sat, Feb 28

2:39 pm - 11:10 pm

ONT

ATH

22h 31m2 stops

8:10 pm - 10:07 pm

ATH

ONT

34h 57m2 stops

$504British Airways

Mon, Mar 2 - Mon, Mar 16

5:02 pm - 1:20 am

ONT

ATH

23h 18m2 stops

3:10 pm - 11:59 pm

ATH

ONT

42h 49m2 stops

$508British Airways

Sun, Mar 22 - Sun, Mar 29

2:39 pm - 11:10 pm

ONT

ATH

23h 31m2 stops

7:55 am - 10:49 pm

ATH

ONT

24h 54m2 stops

$509British Airways

Mon, Mar 16 - Tue, Mar 31

6:00 am - 3:55 pm

ONT

ATH

23h 55m2 stops

8:00 am - 10:13 pm

ATH

ONT

24h 13m3 stops

$510American Airlines

Sun, Feb 1 - Sun, Feb 8

6:09 am - 12:25 am

ONT

ATH

32h 16m2 stops

10:55 am - 5:41 pm

ATH

ONT

39h 46m2 stops

$513United Airlines

Sun, Mar 1 - Sun, Mar 15

Delta flights from Ontario to Athens

Our best Delta deals on Ontario to Athens flight tickets

Delta

Apr 28

ONT5:55 pmOntario

45h 15m

2 stops

ATH1:10 amAthens Eleftherios V.

May 12

ATH9:10 amAthens Eleftherios V.

19h 05m

1 stop

ONT6:15 pmOntario

$564

Delta

Apr 20

ONT10:15 pmOntario

23h 35m

2 stops

ATH7:50 amAthens Eleftherios V.

May 3

ATH9:10 amAthens Eleftherios V.

19h 18m

1 stop

ONT6:28 pmOntario

$659

Delta

Apr 20

ONT11:53 amOntario

27h 17m

2 stops

ATH1:10 amAthens Eleftherios V.

May 3

ATH9:10 amAthens Eleftherios V.

19h 18m

1 stop

ONT6:28 pmOntario

$744

British Airways flights from Ontario to Athens

Our best British Airways deals on Ontario to Athens flight tickets

British Airways

Jan 28

ONT3:09 pmOntario

23h 56m

2 stops

ATH1:05 amAthens Eleftherios V.

Feb 11

ATH8:20 pmAthens Eleftherios V.

35h 47m

2 stops

ONT10:07 pmOntario

$441

British Airways

Feb 6

ONT4:45 pmOntario

34h 50m

2 stops

ATH1:35 pmAthens Eleftherios V.

Feb 13

ATH7:45 amAthens Eleftherios V.

24h 22m

2 stops

ONT10:07 pmOntario

$466

British Airways

Mar 18

ONT5:02 pmOntario

23h 03m

2 stops

ATH1:05 amAthens Eleftherios V.

Mar 30

ATH7:25 amAthens Eleftherios V.

26h 34m

2 stops

ONT11:59 pmOntario

$491

Fly from

Fly to

Route

Depart

Return

Price

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 1/28

3:09 pm-1:05 am

2 stops23h 56m

Athens Eleftherios V.

Wed 2/11

8:20 pm-10:07 pm

2 stops35h 47m

$441

OntarioAthens

ONT - ATH

ONTATH

Ontario

Fri 2/6

4:45 pm-1:35 pm

2 stops34h 50m

Athens Eleftherios V.

Fri 2/13

7:45 am-10:07 pm

2 stops24h 22m

$466

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 3/18

5:02 pm-1:05 am

2 stops23h 03m

Athens Eleftherios V.

Mon 3/30

7:25 am-11:59 pm

2 stops26h 34m

$491

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 3/5

2:39 pm-1:25 am

2 stops24h 46m

Athens Eleftherios V.

Tue 3/10

7:55 pm-10:19 pm

2 stops35h 24m

$496

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sat 2/21

1:53 pm-1:40 am

2 stops25h 47m

Athens Eleftherios V.

Sat 2/28

6:30 am-9:59 pm

2 stops25h 29m

$502

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 3/2

2:39 pm-11:10 pm

2 stops22h 31m

Athens Eleftherios V.

Mon 3/16

8:10 pm-10:07 pm

2 stops34h 57m

$504

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 3/22

5:02 pm-1:20 am

2 stops23h 18m

Athens Eleftherios V.

Sun 3/29

3:10 pm-11:59 pm

2 stops42h 49m

$508

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 3/16

2:39 pm-11:10 pm

2 stops23h 31m

Athens Eleftherios V.

Tue 3/31

7:55 am-10:49 pm

2 stops24h 54m

$509

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 2/1

6:00 am-3:55 pm

2 stops23h 55m

Athens Eleftherios V.

Sun 2/8

8:00 am-10:13 pm

3 stops24h 13m

$510

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 3/1

6:09 am-12:25 am

2 stops32h 16m

Athens Eleftherios V.

Sun 3/15

10:55 am-5:41 pm

2 stops39h 46m

$513

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 Athens

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 Athens?

The cheapest day to depart on your flight to Athens is on a Monday when prices can be found for as low as $646. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $747. These prices are subject to change though, so be sure to set up a Price Alert for flights to Athens.

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

The cheapest time of day to fly to Athens is in the evening when flights can be purchased for as low as $710. Flights to Athens are more costly in the afternoon, with an average ticket price of $731. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Ontario to Athens flights?

You could potentially save up to 6% on your flight if you consider stops on a Ontario to Athens flight.

When to book flights from Ontario to Athens

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Athens according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Athens (ONT to ATH) flight deals and tips

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

Fastest flight time	16h 15m
Direct flights	None

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

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

Search flight deals

How far is Ontario to Athens Eleftherios V. by plane?
The distance between Ontario and Athens Eleftherios V. is about 6871.5 mi. A reasonable flight in good conditions will take 16h 15m.
When did momondo last update prices for flights from Ontario Airport to Athens Eleftherios V. Airport?
Prices for flights from Ontario Airport to Athens Eleftherios V. Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario Airport to Athens Eleftherios V. Airport?
As of January 2026, there is 1 operator available to choose from for flights from Ontario Airport to Athens Eleftherios V. Airport.
How old do you have to be to fly from Ontario Airport to Athens Eleftherios V. Airport?
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 Athens Eleftherios V. Airport.
What documentation or ID do you need to fly to Athens Eleftherios V. Airport?
The required travel and health documents for your Athens Eleftherios V. Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Athens Eleftherios V. Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Ontario to Athens?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ontario to Athens is United Airlines (100% of total bookings).

Best airlines flying from Ontario to Athens

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $660	Free Cancellation	Rating 7.4 9,139 reviews		Search United Airlines flights

Piraeus

Glyfada

Marathon

Hydra

Aegina

Skala

Loutraki

Tolo

Corinth

Chalcis

Agia Marina

Porto Cheli

Galaxidi

Why use momondo?

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

It is quick and easy to find Ontario to Athens flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Athens that suits you.

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

Flights from Ontario to Athens with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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 Athens from Ontario.

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

Price alerts on flights to Athens from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.