What airlines fly to Athens?

United Airlines, Turkish Airlines and Lufthansa 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.?

United Airlines and Delta 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.

$320 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.

12:33 pm - 7:55 pm

ONT

ATH

21h 22m

2 stops

2:00 pm - 9:34 am

ATH

ONT

29h 34m

1 stop

$762British Airways

Sun, Aug 16 - Tue, Sep 1

7:05 am - 11:45 am

ONT

ATH

18h 40m

1 stop

2:00 pm - 9:34 am

ATH

ONT

29h 34m

1 stop

$764British Airways

Sun, Aug 16 - Tue, Sep 1

6:00 am - 10:00 am

ONT

ATH

42h 00m

2 stops

12:10 pm - 12:12 pm

ATH

ONT

34h 02m

2 stops

$776United Airlines

Sun, Aug 16 - Tue, Sep 1

7:05 am - 11:45 am

ONT

ATH

18h 40m

1 stop

2:00 pm - 10:59 pm

ATH

ONT

18h 59m

1 stop

$777British Airways

Tue, Aug 11 - Tue, Sep 1

7:05 am - 11:45 am

ONT

ATH

18h 40m

1 stop

2:00 pm - 10:59 pm

ATH

ONT

18h 59m

1 stop

$780Iberia

Sun, Aug 16 - Tue, Sep 1

7:00 am - 10:35 am

ONT

ATH

17h 35m

1 stop

12:35 pm - 10:59 pm

ATH

ONT

20h 24m

1 stop

$781United Airlines

Sun, Aug 23 - Thu, Sep 10

7:05 am - 11:45 am

ONT

ATH

18h 40m

1 stop

2:00 pm - 10:59 pm

ATH

ONT

18h 59m

1 stop

$782Iberia

Sun, Aug 16 - Tue, Sep 1

7:00 am - 10:35 am

ONT

ATH

17h 35m

1 stop

6:00 am - 8:01 pm

ATH

ONT

24h 01m

2 stops

$786United Airlines

Mon, Aug 24 - Tue, Sep 8

1:50 pm - 11:10 am

ONT

ATH

35h 20m

3 stops

12:35 pm - 10:35 pm

ATH

ONT

20h 00m

1 stop

$790United Airlines

Sun, Jul 19 - Fri, Sep 4

1:50 pm - 10:35 am

ONT

ATH

34h 45m

2 stops

12:35 pm - 10:35 pm

ATH

ONT

20h 00m

1 stop

$792United Airlines

Tue, Jul 21 - Fri, Sep 4

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Iberia flights from Ontario to Athens

Our best Iberia deals on Ontario to Athens flight tickets

Iberia

Aug 16

ONT7:05 amOntario

18h 40m

1 stop

ATH11:45 amAthens Eleftherios V.

Sep 1

ATH2:00 pmAthens Eleftherios V.

18h 59m

1 stop

ONT10:59 pmOntario

$780

Iberia

Aug 16

ONT7:05 amOntario

18h 40m

1 stop

ATH11:45 amAthens Eleftherios V.

Sep 1

ATH2:00 pmAthens Eleftherios V.

18h 59m

1 stop

ONT10:59 pmOntario

$782

Iberia

Jul 7

ONT7:00 amOntario

18h 45m

1 stop

ATH11:45 amAthens Eleftherios V.

Sep 1

ATH2:00 pmAthens Eleftherios V.

18h 59m

1 stop

ONT10:59 pmOntario

$846

KLM flights from Ontario to Athens

Our best KLM deals on Ontario to Athens flight tickets

KLM

Oct 14

ONT7:00 amOntario

18h 00m

1 stop

ATH11:00 amAthens Eleftherios V.

Oct 23

ATH9:45 amAthens Eleftherios V.

22h 29m

1 stop

ONT10:14 pmOntario

$819

KLM

Jul 26

ONT7:05 amOntario

17h 55m

1 stop

ATH11:00 amAthens Eleftherios V.

Aug 20

ATH12:10 pmAthens Eleftherios V.

19h 42m

1 stop

ONT9:52 pmOntario

$842

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 8/16

12:33 pm-7:55 pm

2 stops21h 22m

Athens Eleftherios V.

Tue 9/1

2:00 pm-9:34 am

1 stop29h 34m

$762

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 8/16

7:05 am-11:45 am

1 stop18h 40m

Athens Eleftherios V.

Tue 9/1

2:00 pm-9:34 am

1 stop29h 34m

$764

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 8/16

6:00 am-10:00 am

2 stops42h 00m

Athens Eleftherios V.

Tue 9/1

12:10 pm-12:12 pm

2 stops34h 02m

$776

Quickest round-trip

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 8/11

7:05 am-11:45 am

1 stop18h 40m

Athens Eleftherios V.

Tue 9/1

2:00 pm-10:59 pm

1 stop18h 59m

$777

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 8/16

7:05 am-11:45 am

1 stop18h 40m

Athens Eleftherios V.

Tue 9/1

2:00 pm-10:59 pm

1 stop18h 59m

$780

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 8/23

7:00 am-10:35 am

1 stop17h 35m

Athens Eleftherios V.

Thu 9/10

12:35 pm-10:59 pm

1 stop20h 24m

$781

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 8/16

7:05 am-11:45 am

1 stop18h 40m

Athens Eleftherios V.

Tue 9/1

2:00 pm-10:59 pm

1 stop18h 59m

$782

OntarioAthens

ONT - ATH

ONTATH

Ontario

Mon 8/24

7:00 am-10:35 am

1 stop17h 35m

Athens Eleftherios V.

Tue 9/8

6:00 am-8:01 pm

2 stops24h 01m

$786

OntarioAthens

ONT - ATH

ONTATH

Ontario

Sun 7/19

1:50 pm-11:10 am

3 stops35h 20m

Athens Eleftherios V.

Fri 9/4

12:35 pm-10:35 pm

1 stop20h 00m

$790

OntarioAthens

ONT - ATH

ONTATH

Ontario

Tue 7/21

1:50 pm-10:35 am

2 stops34h 45m

Athens Eleftherios V.

Fri 9/4

12:35 pm-10:35 pm

1 stop20h 00m

$792

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 Tuesday when prices can be found for as low as $489. 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 $780. 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 $539. 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 29% 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 10m
Direct flights	None

The fastest flight from Ontario to Athens takes 16h 10m

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 10m.
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

Corinth

Tolo

Skala

Marathon

Chalcis

Porto Cheli

Agia Marina

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.