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

British Airways is the most popular carrier 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 48% 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.

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.

$241 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.

2:39 pm - 1:05 am

ONT

ATH

24h 26m

2 stops

7:45 am - 10:49 pm

ATH

ONT

25h 04m

2 stops

$465British Airways

Wed, Feb 18 - Mon, Feb 23

2:39 pm - 11:10 pm

ONT

ATH

22h 31m

2 stops

8:10 pm - 10:06 am

ATH

ONT

46h 56m

2 stops

$485British Airways

Mon, Mar 2 - Mon, Mar 9

2:39 pm - 9:55 pm

ONT

ATH

21h 16m

2 stops

8:05 pm - 9:07 pm

ATH

ONT

35h 02m

2 stops

$490British Airways

Fri, Feb 27 - Sat, Mar 7

6:37 pm - 1:40 am

ONT

ATH

22h 03m

2 stops

10:55 am - 10:18 pm

ATH

ONT

20h 23m

2 stops

$501United Airlines

Thu, Mar 12 - Wed, Mar 18

6:37 pm - 1:40 am

ONT

ATH

21h 03m

2 stops

6:25 am - 10:18 pm

ATH

ONT

24h 53m

2 stops

$502United Airlines

Mon, Mar 2 - Mon, Mar 16

11:58 pm - 3:05 pm

ONT

ATH

29h 07m

2 stops

7:30 am - 10:29 pm

ATH

ONT

24h 59m

2 stops

$503British Airways

Tue, Feb 17 - Thu, Feb 26

4:45 pm - 11:10 pm

ONT

ATH

20h 25m

2 stops

7:45 am - 10:49 pm

ATH

ONT

25h 04m

2 stops

$507British Airways

Mon, Feb 9 - Mon, Feb 23

1:50 pm - 12:25 am

ONT

ATH

24h 35m

2 stops

6:25 am - 10:18 pm

ATH

ONT

24h 53m

2 stops

$514United Airlines

Fri, Feb 27 - Mon, Mar 9

11:58 pm - 7:30 pm

ONT

ATH

33h 32m

2 stops

7:45 am - 10:49 pm

ATH

ONT

25h 04m

2 stops

$528British Airways

Mon, Feb 16 - Mon, Feb 23

12:22 pm - 2:15 am

ONT

ATH

27h 53m

2 stops

7:30 am - 11:46 pm

ATH

ONT

26h 16m

2 stops

$557British Airways

Sun, Mar 29 - Wed, Apr 8

United Airlines flights from Ontario to Athens

Our best United Airlines deals on Ontario to Athens flight tickets

United Airlines

Mar 2

ONT6:37 pmOntario

21h 03m

2 stops

ATH1:40 amAthens Eleftherios V.

Mar 19

ATH6:25 amAthens Eleftherios V.

25h 32m

2 stops

ONT10:57 pmOntario

$502

United Airlines

Feb 3

ONT1:53 pmOntario

25h 47m

2 stops

ATH1:40 amAthens Eleftherios V.

Feb 11

ATH6:35 amAthens Eleftherios V.

24h 23m

2 stops

ONT8:58 pmOntario

$504

United Airlines

Apr 28

ONT1:27 pmOntario

35h 08m

2 stops

ATH10:35 amAthens Eleftherios V.

May 12

ATH1:10 pmAthens Eleftherios V.

38h 42m

3 stops

ONT5:52 pmOntario

$565

British Airways flights from Ontario to Athens

Our best British Airways deals on Ontario to Athens flight tickets

British Airways

Feb 18

ONT2:39 pmOntario

24h 26m

2 stops

ATH1:05 amAthens Eleftherios V.

Feb 23

ATH7:45 amAthens Eleftherios V.

25h 04m

2 stops

ONT10:49 pmOntario

$465

British Airways

Feb 27

ONT2:39 pmOntario

21h 16m

2 stops

ATH9:55 pmAthens Eleftherios V.

Mar 7

ATH8:05 pmAthens Eleftherios V.

35h 02m

2 stops

ONT9:07 pmOntario

$490

British Airways

Feb 14

ONT11:58 pmOntario

39h 22m

2 stops

ATH1:20 amAthens Eleftherios V.

Feb 26

ATH7:30 amAthens Eleftherios V.

26h 29m

2 stops

ONT11:59 pmOntario

$503

Fly from

Fly to

Route

Depart

Return

Price

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 2/18

2:39 pm-1:05 am

2 stops24h 26m

Athens Eleftherios V.

Mon 2/23

7:45 am-10:49 pm

2 stops25h 04m

$465

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 3/2

2:39 pm-11:10 pm

2 stops22h 31m

Athens Eleftherios V.

Mon 3/9

8:10 pm-10:06 am

2 stops46h 56m

$485

OntarioAthens

ONT - ATH

ONTATH

Ontario

Fri 2/27

2:39 pm-9:55 pm

2 stops21h 16m

Athens Eleftherios V.

Sat 3/7

8:05 pm-9:07 pm

2 stops35h 02m

$490

OntarioAthens

ONT - ATH

ONTATH

Ontario

Thu 3/12

6:37 pm-1:40 am

2 stops22h 03m

Athens Eleftherios V.

Wed 3/18

10:55 am-10:18 pm

2 stops20h 23m

$501

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 3/2

6:37 pm-1:40 am

2 stops21h 03m

Athens Eleftherios V.

Mon 3/16

6:25 am-10:18 pm

2 stops24h 53m

$502

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 2/17

11:58 pm-3:05 pm

2 stops29h 07m

Athens Eleftherios V.

Thu 2/26

7:30 am-10:29 pm

2 stops24h 59m

$503

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 2/9

4:45 pm-11:10 pm

2 stops20h 25m

Athens Eleftherios V.

Mon 2/23

7:45 am-10:49 pm

2 stops25h 04m

$507

OntarioAthens

ONT - ATH

ONTATH

Ontario

Fri 2/27

1:50 pm-12:25 am

2 stops24h 35m

Athens Eleftherios V.

Mon 3/9

6:25 am-10:18 pm

2 stops24h 53m

$514

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 2/16

11:58 pm-7:30 pm

2 stops33h 32m

Athens Eleftherios V.

Mon 2/23

7:45 am-10:49 pm

2 stops25h 04m

$528

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 3/29

12:22 pm-2:15 am

2 stops27h 53m

Athens Eleftherios V.

Wed 4/8

7:30 am-11:46 pm

2 stops26h 16m

$557

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 52% 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	18h 25m
Direct flights	None

The fastest flight from Ontario to Athens takes 18h 25m

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 18h 25m.
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 9,191 reviews		Search United Airlines flights

Piraeus

Glyfada

Marathon

Hydra

Skala

Aegina

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.