What airlines fly to Athens?

Norse Atlantic Airways, United Airlines and Turkish 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 33% of people opting to fly with this airline when traveling to Athens. Keep in mind that there are 19 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.?

Delta, United Airlines, 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 May 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.

$365 Cheap Flights from Ontario to Athens in 2026

Q: What is the typical price of a round-trip flight between Ontario and Athens?

Prices are currently low for flights on this route. Typical prices usually range from $1,278 to $681. The lowest price recently found on this route was $820.

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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.

7:05 am - 11:00 am

ONT

ATH

17h 55m

1 stop

12:10 pm - 9:56 pm

ATH

ONT

19h 46m

1 stop

$820KLM

Tue, Aug 18 - Tue, Sep 1

7:20 am - 12:40 am

ONT

ATH

31h 20m

2 stops

6:55 am - 11:06 pm

ATH

ONT

26h 11m

2 stops

$831Iberia

Tue, Sep 15 - Thu, Sep 24

5:45 am - 6:40 pm

ONT

ATH

26h 55m

2 stops

12:10 pm - 10:59 pm

ATH

ONT

44h 49m

2 stops

$832United Airlines

Mon, Sep 14 - Wed, Sep 23

7:13 pm - 10:10 am

ONT

ATH

28h 57m

3 stops

3:25 pm - 10:26 pm

ATH

ONT

41h 01m

2 stops

$833United Airlines

Tue, Sep 15 - Thu, Sep 24

12:33 pm - 7:00 pm

ONT

ATH

20h 27m

2 stops

2:00 pm - 10:58 pm

ATH

ONT

18h 58m

1 stop

$856British Airways

Wed, Aug 19 - Wed, Sep 2

7:00 am - 10:35 am

ONT

ATH

17h 35m

1 stop

6:55 am - 8:01 pm

ATH

ONT

23h 06m

2 stops

$863United Airlines

Tue, Aug 18 - Tue, Sep 1

9:01 am - 2:55 pm

ONT

ATH

19h 54m

2 stops

6:45 am - 7:17 pm

ATH

ONT

22h 32m

2 stops

$869United Airlines

Wed, Aug 19 - Fri, Sep 18

7:05 am - 9:20 am

ONT

ATH

16h 15m

1 stop

9:45 am - 6:01 pm

ATH

ONT

18h 16m

1 stop

$870KLM

Sat, Aug 22 - Tue, Sep 1

7:00 am - 11:00 am

ONT

ATH

18h 00m

1 stop

11:30 am - 10:14 pm

ATH

ONT

20h 44m

1 stop

$874KLM

Sat, Oct 10 - Tue, Oct 20

7:05 am - 10:00 am

ONT

ATH

16h 55m

1 stop

9:45 am - 6:01 pm

ATH

ONT

18h 16m

1 stop

$882Delta

Sun, Aug 30 - Thu, Oct 1

British Airways flights from Ontario to Athens

Our best British Airways deals on Ontario to Athens flight tickets

British Airways

Aug 19

ONT12:33 pmOntario

20h 27m

2 stops

ATH7:00 pmAthens Eleftherios V.

Sep 2

ATH2:00 pmAthens Eleftherios V.

18h 58m

1 stop

ONT10:58 pmOntario

$856

British Airways

Aug 19

ONT7:06 amOntario

18h 39m

1 stop

ATH11:45 amAthens Eleftherios V.

Aug 26

ATH2:00 pmAthens Eleftherios V.

18h 58m

1 stop

ONT10:58 pmOntario

$906

British Airways

Jul 28

ONT5:34 amOntario

20h 11m

1 stop

ATH11:45 amAthens Eleftherios V.

Aug 6

ATH2:05 pmAthens Eleftherios V.

29h 29m

1 stop

ONT9:34 amOntario

$921

KLM flights from Ontario to Athens

Our best KLM deals on Ontario to Athens flight tickets

KLM

Aug 18

ONT7:05 amOntario

17h 55m

1 stop

ATH11:00 amAthens Eleftherios V.

Sep 1

ATH12:10 pmAthens Eleftherios V.

19h 46m

1 stop

ONT9:56 pmOntario

$820

KLM

Aug 22

ONT7:05 amOntario

16h 15m

1 stop

ATH9:20 amAthens Eleftherios V.

Sep 1

ATH9:45 amAthens Eleftherios V.

18h 16m

1 stop

ONT6:01 pmOntario

$870

KLM

Oct 10

ONT7:00 amOntario

18h 00m

1 stop

ATH11:00 amAthens Eleftherios V.

Oct 20

ATH11:30 amAthens Eleftherios V.

20h 44m

1 stop

ONT10:14 pmOntario

$874

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 8/18

7:05 am-11:00 am

1 stop17h 55m

Athens Eleftherios V.

Tue 9/1

12:10 pm-9:56 pm

1 stop19h 46m

$820

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 9/15

7:20 am-12:40 am

2 stops31h 20m

Athens Eleftherios V.

Thu 9/24

6:55 am-11:06 pm

2 stops26h 11m

$831

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 9/14

5:45 am-6:40 pm

2 stops26h 55m

Athens Eleftherios V.

Wed 9/23

12:10 pm-10:59 pm

2 stops44h 49m

$832

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 9/15

7:13 pm-10:10 am

3 stops28h 57m

Athens Eleftherios V.

Thu 9/24

3:25 pm-10:26 pm

2 stops41h 01m

$833

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 8/19

12:33 pm-7:00 pm

2 stops20h 27m

Athens Eleftherios V.

Wed 9/2

2:00 pm-10:58 pm

1 stop18h 58m

$856

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 8/18

7:00 am-10:35 am

1 stop17h 35m

Athens Eleftherios V.

Tue 9/1

6:55 am-8:01 pm

2 stops23h 06m

$863

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 8/19

9:01 am-2:55 pm

2 stops19h 54m

Athens Eleftherios V.

Fri 9/18

6:45 am-7:17 pm

2 stops22h 32m

$869

Quickest round-trip

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sat 8/22

7:05 am-9:20 am

1 stop16h 15m

Athens Eleftherios V.

Tue 9/1

9:45 am-6:01 pm

1 stop18h 16m

$870

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sat 10/10

7:00 am-11:00 am

1 stop18h 00m

Athens Eleftherios V.

Tue 10/20

11:30 am-10:14 pm

1 stop20h 44m

$874

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 8/30

7:05 am-10:00 am

1 stop16h 55m

Athens Eleftherios V.

Thu 10/1

9:45 am-6:01 pm

1 stop18h 16m

$882

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 typical price of a round-trip flight between Ontario and Athens?

What is the cheapest month to fly to Athens?

The cheapest month to fly to Athens from Ontario is in December. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you are unable to visit Athens during the month of December, then departing from Ontario during the month January is also very affordable. Most momondo users find prices during this month for around $0.

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 Tuesday when prices can be found for as low as $595. 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 $715. 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 $617. Flights to Athens are more costly at noon, with an average ticket price of $838. Departure times at noon 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 39% 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 55m
Direct flights	None

The fastest flight from Ontario to Athens takes 16h 55m

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

Search flight deals

Frequently asked questions about flying from Ontario to Athens

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 55m.
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 May 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 $588	Free Cancellation	Rating 7.4 9,737 reviews		Search United Airlines flights

Piraeus

Glyfada

Loutraki

Hydra

Aegina

Skala

Tolo

Marathon

Corinth

Agia Marina

Chalcis

Galaxidi

Porto Cheli

Megalochori

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.