What airlines fly to Athens?

Norse Atlantic Airways, Turkish Airlines and United 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 46% 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.

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

KLM, Delta, and United Airlines 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 December 2025, 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.

$380 Cheap Flights from Ontario to Athens in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

10:56 am - 1:05 am

ONT

ATH

28h 09m2 stops

8:20 pm - 10:07 pm

ATH

ONT

35h 47m2 stops

$491British Airways

mié., feb. 18 - mié., feb. 25

7:00 am - 4:15 pm

ONT

ATH

23h 15m2 stops

7:30 am - 10:07 pm

ATH

ONT

24h 37m3 stops

$510American Airlines

jue., feb. 12 - jue., feb. 19

8:00 am - 4:35 pm

ONT

ATH

22h 35m2 stops

6:15 am - 8:58 pm

ATH

ONT

24h 43m2 stops

$514United Airlines

mié., ene. 28 - mié., feb. 4

5:02 pm - 12:15 pm

ONT

ATH

34h 13m2 stops

8:05 pm - 10:07 pm

ATH

ONT

36h 02m2 stops

$531British Airways

mié., mar. 18 - mié., abr. 1

5:02 pm - 1:25 am

ONT

ATH

23h 23m2 stops

7:30 am - 10:30 pm

ATH

ONT

25h 00m2 stops

$555British Airways

sáb., mar. 21 - vie., abr. 3

5:15 am - 10:40 am

ONT

ATH

44h 25m3 stops

6:00 am - 5:47 pm

ATH

ONT

21h 47m2 stops

$563United Airlines

sáb., mar. 21 - vie., abr. 3

5:02 pm - 1:20 am

ONT

ATH

23h 18m2 stops

5:40 pm - 4:22 pm

ATH

ONT

32h 42m2 stops

$568British Airways

dom., mar. 22 - mar., mar. 31

5:02 pm - 2:15 am

ONT

ATH

23h 13m2 stops

7:30 am - 9:59 pm

ATH

ONT

24h 29m2 stops

$588British Airways

dom., abr. 5 - vie., abr. 17

5:02 pm - 1:20 am

ONT

ATH

22h 18m2 stops

8:05 pm - 10:07 pm

ATH

ONT

36h 02m2 stops

$591British Airways

dom., feb. 15 - sáb., feb. 21

10:56 am - 7:05 pm

ONT

ATH

22h 09m2 stops

8:45 pm - 4:22 pm

ATH

ONT

53h 37m2 stops

$593British Airways

mar., mar. 31 - lun., abr. 13

British Airways flights from Ontario to Athens

Our best British Airways deals on Ontario to Athens flight tickets

British Airways

Jan 28

ONT3:09 pmOntario

23h 56m

2 stops

ATH1:05 amAthens Eleftherios V.

Feb 4

ATH8:20 pmAthens Eleftherios V.

35h 53m

2 stops

ONT10:13 pmOntario

$491

Find similar

British Airways

Mar 18

ONT5:02 pmOntario

34h 13m

2 stops

ATH12:15 pmAthens Eleftherios V.

Apr 1

ATH8:05 pmAthens Eleftherios V.

36h 02m

2 stops

ONT10:07 pmOntario

$531

Find similar

British Airways

Mar 21

ONT5:02 pmOntario

23h 23m

2 stops

ATH1:25 amAthens Eleftherios V.

Apr 3

ATH7:30 amAthens Eleftherios V.

25h 00m

2 stops

ONT10:30 pmOntario

$555

Find similar

American Airlines flights from Ontario to Athens

Our best American Airlines deals on Ontario to Athens flight tickets

American Airlines

Feb 12

ONT7:00 amOntario

23h 15m

2 stops

ATH4:15 pmAthens Eleftherios V.

Feb 19

ATH7:30 amAthens Eleftherios V.

24h 37m

3 stops

ONT10:07 pmOntario

$510

Find similar

American Airlines

Apr 19

ONT7:30 amOntario

22h 50m

2 stops

ATH4:20 pmAthens Eleftherios V.

May 2

ATH8:15 amAthens Eleftherios V.

25h 31m

2 stops

ONT11:46 pmOntario

$669

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioAthens

ONT - ATH

ONTATH

Ontario

mié. 2/18

10:56 am-1:05 am

2 stops28h 09m

Athens Eleftherios V.

mié. 2/25

8:20 pm-10:07 pm

2 stops35h 47m

$491

OntarioAthens

ONT - ATH

ONTATH

Ontario

jue. 2/12

7:00 am-4:15 pm

2 stops23h 15m

Athens Eleftherios V.

jue. 2/19

7:30 am-10:07 pm

3 stops24h 37m

$510

OntarioAthens

ONT - ATH

ONTATH

Ontario

mié. 1/28

8:00 am-4:35 pm

2 stops22h 35m

Athens Eleftherios V.

mié. 2/4

6:15 am-8:58 pm

2 stops24h 43m

$514

OntarioAthens

ONT - ATH

ONTATH

Ontario

mié. 3/18

5:02 pm-12:15 pm

2 stops34h 13m

Athens Eleftherios V.

mié. 4/1

8:05 pm-10:07 pm

2 stops36h 02m

$531

OntarioAthens

ONT - ATH

ONTATH

Ontario

sáb. 3/21

5:02 pm-1:25 am

2 stops23h 23m

Athens Eleftherios V.

vie. 4/3

7:30 am-10:30 pm

2 stops25h 00m

$555

OntarioAthens

ONT - ATH

ONTATH

Ontario

sáb. 3/21

5:15 am-10:40 am

3 stops44h 25m

Athens Eleftherios V.

vie. 4/3

6:00 am-5:47 pm

2 stops21h 47m

$563

OntarioAthens

ONT - ATH

ONTATH

Ontario

dom. 3/22

5:02 pm-1:20 am

2 stops23h 18m

Athens Eleftherios V.

mar. 3/31

5:40 pm-4:22 pm

2 stops32h 42m

$568

OntarioAthens

ONT - ATH

ONTATH

Ontario

dom. 4/5

5:02 pm-2:15 am

2 stops23h 13m

Athens Eleftherios V.

vie. 4/17

7:30 am-9:59 pm

2 stops24h 29m

$588

OntarioAthens

ONT - ATH

ONTATH

Ontario

dom. 2/15

5:02 pm-1:20 am

2 stops22h 18m

Athens Eleftherios V.

sáb. 2/21

8:05 pm-10:07 pm

2 stops36h 02m

$591

OntarioAthens

ONT - ATH

ONTATH

Ontario

mar. 3/31

10:56 am-7:05 pm

2 stops22h 09m

Athens Eleftherios V.

lun. 4/13

8:45 pm-4:22 pm

2 stops53h 37m

$593

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 6% 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	20h 15m
Direct flights	None

The fastest flight from Ontario to Athens takes 20h 15m

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 20h 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 December 2025, 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 9,124 reviews		Search United Airlines flights

Piraeus

Glyfada

Marathon

Hydra

Aegina

Skala

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.