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

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

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 37% 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.

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 April 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.

$366 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 $1,259 to $725. The lowest price recently found on this route was $814.

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0 bags

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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.

7:00 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 4 - 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 1 - Thu, Oct 15

10:29 am - 6:05 pm

ONT

ATH

21h 36m

2 stops

8:00 pm - 9:08 pm

ATH

ONT

35h 08m

2 stops

$847British Airways

Tue, Sep 1 - Thu, Oct 15

4:59 pm - 2:10 am

ONT

ATH

23h 11m

2 stops

8:00 pm - 6:57 pm

ATH

ONT

32h 57m

2 stops

$863British Airways

Tue, Sep 22 - Tue, Oct 6

7:00 am - 10:35 am

ONT

ATH

17h 35m

1 stop

12:35 pm - 10:26 pm

ATH

ONT

19h 51m

1 stop

$874United Airlines

Thu, Oct 8 - Thu, Oct 15

6:30 am - 10:35 am

ONT

ATH

18h 05m

1 stop

12:50 pm - 10:26 pm

ATH

ONT

19h 36m

2 stops

$876United Airlines

Sun, Aug 9 - Sun, Nov 22

1:31 pm - 7:05 pm

ONT

ATH

19h 34m

2 stops

7:50 pm - 9:35 pm

ATH

ONT

34h 45m

2 stops

$877British Airways

Mon, Oct 5 - Thu, Oct 29

4:59 pm - 2:10 am

ONT

ATH

23h 11m

2 stops

3:15 pm - 5:48 pm

ATH

ONT

36h 33m

2 stops

$878British Airways

Mon, Sep 14 - Thu, Sep 24

7:06 am - 11:45 am

ONT

ATH

18h 39m

1 stop

2:00 pm - 5:48 pm

ATH

ONT

37h 48m

2 stops

$879British Airways

Wed, Aug 19 - Thu, Sep 10

7:00 am - 10:00 am

ONT

ATH

17h 00m

1 stop

9:45 am - 6:01 pm

ATH

ONT

18h 16m

1 stop

$882Delta

Mon, Sep 21 - Fri, Oct 2

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British Airways flights from Ontario to Athens

Our best British Airways deals on Ontario to Athens flight tickets

British Airways

Sep 1

ONT10:29 amOntario

21h 36m

2 stops

ATH6:05 pmAthens Eleftherios V.

Oct 15

ATH8:00 pmAthens Eleftherios V.

35h 08m

2 stops

ONT9:08 pmOntario

$847

British Airways

Sep 21

ONT4:59 pmOntario

23h 11m

2 stops

ATH2:10 amAthens Eleftherios V.

Oct 1

ATH8:00 pmAthens Eleftherios V.

32h 57m

2 stops

ONT6:57 pmOntario

$862

British Airways

Sep 22

ONT4:59 pmOntario

23h 11m

2 stops

ATH2:10 amAthens Eleftherios V.

Oct 6

ATH8:00 pmAthens Eleftherios V.

32h 57m

2 stops

ONT6:57 pmOntario

$863

Delta flights from Ontario to Athens

Our best Delta deals on Ontario to Athens flight tickets

Delta

Sep 21

ONT7:00 amOntario

17h 00m

1 stop

ATH10:00 amAthens Eleftherios V.

Oct 2

ATH9:45 amAthens Eleftherios V.

18h 16m

1 stop

ONT6:01 pmOntario

$882

Delta

Jul 26

ONT7:05 amOntario

17h 55m

1 stop

ATH11:00 amAthens Eleftherios V.

Aug 7

ATH9:45 amAthens Eleftherios V.

18h 38m

1 stop

ONT6:23 pmOntario

$1,004

Delta

Jul 26

ONT7:05 amOntario

17h 55m

1 stop

ATH11:00 amAthens Eleftherios V.

Aug 4

ATH1:10 pmAthens Eleftherios V.

20h 34m

2 stops

ONT11:44 pmOntario

$1,009

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 10/4

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

Tue 9/1

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

Tue 9/1

10:29 am-6:05 pm

2 stops21h 36m

Athens Eleftherios V.

Thu 10/15

8:00 pm-9:08 pm

2 stops35h 08m

$847

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 9/22

4:59 pm-2:10 am

2 stops23h 11m

Athens Eleftherios V.

Tue 10/6

8:00 pm-6:57 pm

2 stops32h 57m

$863

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 10/8

7:00 am-10:35 am

1 stop17h 35m

Athens Eleftherios V.

Thu 10/15

12:35 pm-10:26 pm

1 stop19h 51m

$874

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 8/9

6:30 am-10:35 am

1 stop18h 05m

Athens Eleftherios V.

Sun 11/22

12:50 pm-10:26 pm

2 stops19h 36m

$876

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 10/5

1:31 pm-7:05 pm

2 stops19h 34m

Athens Eleftherios V.

Thu 10/29

7:50 pm-9:35 pm

2 stops34h 45m

$877

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 9/14

4:59 pm-2:10 am

2 stops23h 11m

Athens Eleftherios V.

Thu 9/24

3:15 pm-5:48 pm

2 stops36h 33m

$878

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 8/19

7:06 am-11:45 am

1 stop18h 39m

Athens Eleftherios V.

Thu 9/10

2:00 pm-5:48 pm

2 stops37h 48m

$879

Quickest round-trip

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 9/21

7:00 am-10:00 am

1 stop17h 00m

Athens Eleftherios V.

Fri 10/2

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 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 $614. 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 Friday because tickets tend to average around $695. 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 afternoon when flights can be purchased for as low as $674. 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 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

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 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 April 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 9,604 reviews		Search United Airlines flights

Piraeus

Glyfada

Hydra

Marathon

Aegina

Skala

Loutraki

Tolo

Corinth

Agia Marina

Chalcis

Porto Cheli

Galaxidi

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.