What airlines fly to Athens?

United Airlines, Norse Atlantic Airways and Turkish Airlines are the top three most popular airlines that fly to Athens from Ontario according to our data. United Airlines is the first choice among our users, with 27% 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.?

British Airways, 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 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.

$369 Cheap Flights from Ontario to Athens in 2026

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

12:10 pm - 10:26 pm

ATH

ONT

44h 16m

2 stops

$799United Airlines

Tue, Oct 6 - Fri, Oct 16

5:00 am - 2:55 pm

ONT

ATH

23h 55m

2 stops

12:10 pm - 8:58 pm

ATH

ONT

42h 48m

2 stops

$801United Airlines

Tue, Sep 15 - Wed, Sep 23

1:52 pm - 10:10 am

ONT

ATH

34h 18m

2 stops

12:10 pm - 10:49 pm

ATH

ONT

44h 39m

2 stops

$802United Airlines

Sat, Oct 10 - Wed, Oct 14

6:32 pm - 8:10 am

ONT

ATH

27h 38m

2 stops

12:10 pm - 10:26 pm

ATH

ONT

44h 16m

2 stops

$803United Airlines

Tue, Oct 6 - Fri, Oct 16

5:00 am - 11:00 am

ONT

ATH

20h 00m

2 stops

1:00 pm - 8:20 pm

ATH

ONT

41h 20m

2 stops

$808Air Canada

Sun, Nov 22 - Tue, Nov 24

7:05 am - 9:20 am

ONT

ATH

16h 15m

1 stop

9:45 am - 6:18 pm

ATH

ONT

18h 33m

1 stop

$814KLM

Mon, Oct 5 - Tue, Oct 20

7:00 am - 10:35 am

ONT

ATH

17h 35m

1 stop

11:45 am - 10:49 pm

ATH

ONT

21h 04m

2 stops

$818United Airlines

Wed, Oct 7 - Wed, Oct 21

6:53 pm - 11:00 am

ONT

ATH

30h 07m

2 stops

1:00 pm - 12:20 pm

ATH

ONT

33h 20m

2 stops

$819United Airlines

Tue, Nov 3 - Thu, Nov 12

7:05 am - 11:00 pm

ONT

ATH

29h 55m

2 stops

3:30 pm - 10:47 am

ATH

ONT

29h 17m

2 stops

$823Delta

Tue, Sep 15 - Wed, Sep 23

5:05 pm - 9:35 am

ONT

ATH

30h 30m

2 stops

11:45 am - 11:27 am

ATH

ONT

33h 42m

2 stops

$824Delta

Sat, Nov 21 - Tue, Nov 24

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KLM flights from Ontario to Athens

Our best KLM deals on Ontario to Athens flight tickets

KLM

Oct 5

ONT7:05 amOntario

16h 15m

1 stop

ATH9:20 amAthens Eleftherios V.

Oct 20

ATH9:45 amAthens Eleftherios V.

18h 33m

1 stop

ONT6:18 pmOntario

$814

KLM

Oct 10

ONT12:00 pmOntario

37h 00m

1 stop

ATH11:00 amAthens Eleftherios V.

Oct 14

ATH1:35 pmAthens Eleftherios V.

20h 13m

2 stops

ONT11:48 pmOntario

$825

KLM

Oct 5

ONT7:05 amOntario

16h 15m

1 stop

ATH9:20 amAthens Eleftherios V.

Oct 18

ATH9:45 amAthens Eleftherios V.

18h 33m

1 stop

ONT6:18 pmOntario

$874

British Airways flights from Ontario to Athens

Our best British Airways deals on Ontario to Athens flight tickets

British Airways

Aug 19

ONT7:06 amOntario

18h 39m

1 stop

ATH11:45 amAthens Eleftherios V.

Sep 3

ATH2:05 pmAthens Eleftherios V.

18h 54m

1 stop

ONT10:59 pmOntario

$857

British Airways

Jul 27

ONT7:00 amOntario

18h 45m

1 stop

ATH11:45 amAthens Eleftherios V.

Aug 12

ATH2:00 pmAthens Eleftherios V.

18h 59m

1 stop

ONT10:59 pmOntario

$905

British Airways

Jul 27

ONT7:00 amOntario

18h 45m

1 stop

ATH11:45 amAthens Eleftherios V.

Aug 12

ATH2:00 pmAthens Eleftherios V.

18h 59m

1 stop

ONT10:59 pmOntario

$920

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 10/6

7:00 am-10:35 am

1 stop17h 35m

Athens Eleftherios V.

Fri 10/16

12:10 pm-10:26 pm

2 stops44h 16m

$799

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 9/15

5:00 am-2:55 pm

2 stops23h 55m

Athens Eleftherios V.

Wed 9/23

12:10 pm-8:58 pm

2 stops42h 48m

$801

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sat 10/10

1:52 pm-10:10 am

2 stops34h 18m

Athens Eleftherios V.

Wed 10/14

12:10 pm-10:49 pm

2 stops44h 39m

$802

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 10/6

6:32 pm-8:10 am

2 stops27h 38m

Athens Eleftherios V.

Fri 10/16

12:10 pm-10:26 pm

2 stops44h 16m

$803

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 11/22

5:00 am-11:00 am

2 stops20h 00m

Athens Eleftherios V.

Tue 11/24

1:00 pm-8:20 pm

2 stops41h 20m

$808

Quickest round-trip

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 10/5

7:05 am-9:20 am

1 stop16h 15m

Athens Eleftherios V.

Tue 10/20

9:45 am-6:18 pm

1 stop18h 33m

$814

OntarioAthens

ONT - ATH

ONTATH

Ontario

Wed 10/7

7:00 am-10:35 am

1 stop17h 35m

Athens Eleftherios V.

Wed 10/21

11:45 am-10:49 pm

2 stops21h 04m

$818

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 11/3

6:53 pm-11:00 am

2 stops30h 07m

Athens Eleftherios V.

Thu 11/12

1:00 pm-12:20 pm

2 stops33h 20m

$819

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 9/15

7:05 am-11:00 pm

2 stops29h 55m

Athens Eleftherios V.

Wed 9/23

3:30 pm-10:47 am

2 stops29h 17m

$823

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sat 11/21

5:05 pm-9:35 am

2 stops30h 30m

Athens Eleftherios V.

Tue 11/24

11:45 am-11:27 am

2 stops33h 42m

$824

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 Sunday when prices can be found for as low as $480. 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 Thursday because tickets tend to average around $777. 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 $557. 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	17h 35m
Direct flights	None

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

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 17h 35m.
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 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.

Piraeus

Glyfada

Loutraki

Hydra

Aegina

Skala

Tolo

Marathon

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.