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, 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 44% 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 November 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.

$265 Cheap Flights from Ontario to Athens in 2025/26

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Find the cheapest flights from Ontario to Athens

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One-way

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Cheap round-trip flights

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4:45 pm - 12:15 pmONT-ATH

33h 30m2 stops

7:35 am - 10:51 pmATH-ONT

25h 16m2 stops

$496British Airways

Find Deal

mié., feb. 11 - mar., feb. 24

6:00 am - 1:40 amONT-ATH

33h 40m2 stops

7:05 am - 10:53 pmATH-ONT

25h 48m2 stops

$502United Airlines

Find Deal

mié., ene. 7 - mié., ene. 14

1:53 pm - 1:40 amONT-ATH

25h 47m2 stops

6:15 am - 5:43 pmATH-ONT

21h 28m3 stops

$504United Airlines

Find Deal

mié., ene. 7 - mié., ene. 14

6:00 am - 4:15 pmONT-ATH

24h 15m2 stops

6:25 am - 10:53 pmATH-ONT

26h 28m2 stops

$510United Airlines

Find Deal

jue., ene. 22 - lun., ene. 26

1:53 pm - 4:35 pmONT-ATH

40h 42m2 stops

6:30 am - 5:41 pmATH-ONT

21h 11m2 stops

$511United Airlines

Find Deal

sáb., feb. 14 - sáb., feb. 28

5:06 pm - 1:25 amONT-ATH

22h 19m2 stops

7:50 pm - 10:07 pmATH-ONT

35h 17m2 stops

$536British Airways

Find Deal

sáb., feb. 14 - dom., mar. 8

1:45 pm - 1:40 amONT-ATH

25h 55m2 stops

6:15 am - 10:25 pmATH-ONT

25h 10m2 stops

$539United Airlines

Find Deal

mié., feb. 25 - mié., mar. 11

1:45 pm - 5:35 pmONT-ATH

17h 50m2 stops

6:25 am - 10:25 pmATH-ONT

25h 00m2 stops

$550United Airlines

Find Deal

jue., feb. 26 - jue., mar. 12

10:30 pm - 1:00 pmONT-ATH

29h 30m2 stops

9:10 am - 9:04 pmATH-ONT

21h 54m1 stop

$587Delta

Find Deal

sáb., mar. 21 - vie., abr. 3

7:00 am - 4:30 pmONT-ATH

23h 30m2 stops

3:30 pm - 11:20 amATH-ONT

29h 50m2 stops

$591Delta

Find Deal

mar., abr. 28 - mar., may. 12

British Airways flights from Ontario to Athens

Our best British Airways deals on Ontario to Athens flight tickets

British Airways

Jan 15

ONT4:45 pmOntario

22h 40m

2 stops

ATH1:25 amAthens Eleftherios V.

Jan 29

ATH7:50 pmAthens Eleftherios V.

36h 23m

2 stops

ONT10:13 pmOntario

$496

Find similar

British Airways

Feb 14

ONT5:06 pmOntario

22h 19m

2 stops

ATH1:25 amAthens Eleftherios V.

Mar 8

ATH7:50 pmAthens Eleftherios V.

35h 17m

2 stops

ONT10:07 pmOntario

$536

Find similar

British Airways

Mar 4

ONT5:06 pmOntario

33h 09m

2 stops

ATH12:15 pmAthens Eleftherios V.

Mar 11

ATH7:50 amAthens Eleftherios V.

23h 29m

2 stops

ONT10:19 pmOntario

$576

Find similar

Iberia flights from Ontario to Athens

Our best Iberia deals on Ontario to Athens flight tickets

Iberia

Nov 26

ONT10:47 amOntario

18h 28m

2 stops

ATH3:15 pmAthens Eleftherios V.

Dec 3

ATH3:55 pmAthens Eleftherios V.

29h 58m

2 stops

ONT11:53 amOntario

$999

Find similar

Iberia

Dec 2

ONT6:10 amOntario

23h 05m

2 stops

ATH3:15 pmAthens Eleftherios V.

Dec 9

ATH3:55 pmAthens Eleftherios V.

40h 33m

2 stops

ONT10:28 pmOntario

$7,658

Find similar

Iberia

Nov 28

ONT7:00 amOntario

31h 35m

2 stops

ATH12:35 amAthens Eleftherios V.

Dec 9

ATH3:55 pmAthens Eleftherios V.

40h 33m

2 stops

ONT10:28 pmOntario

$8,963

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioAthens

ONT - ATH

ONTATH

Ontario

mié. 2/11

4:45 pm-12:15 pm

2 stops33h 30m

Athens Eleftherios V.

mar. 2/24

7:35 am-10:51 pm

2 stops25h 16m

$496

OntarioAthens

ONT - ATH

ONTATH

Ontario

mié. 1/7

6:00 am-1:40 am

2 stops33h 40m

Athens Eleftherios V.

mié. 1/14

7:05 am-10:53 pm

2 stops25h 48m

$502

OntarioAthens

ONT - ATH

ONTATH

Ontario

mié. 1/7

1:53 pm-1:40 am

2 stops25h 47m

Athens Eleftherios V.

mié. 1/14

6:15 am-5:43 pm

3 stops21h 28m

$504

OntarioAthens

ONT - ATH

ONTATH

Ontario

jue. 1/22

6:00 am-4:15 pm

2 stops24h 15m

Athens Eleftherios V.

lun. 1/26

6:25 am-10:53 pm

2 stops26h 28m

$510

OntarioAthens

ONT - ATH

ONTATH

Ontario

sáb. 2/14

1:53 pm-4:35 pm

2 stops40h 42m

Athens Eleftherios V.

sáb. 2/28

6:30 am-5:41 pm

2 stops21h 11m

$511

OntarioAthens

ONT - ATH

ONTATH

Ontario

sáb. 2/14

5:06 pm-1:25 am

2 stops22h 19m

Athens Eleftherios V.

dom. 3/8

7:50 pm-10:07 pm

2 stops35h 17m

$536

OntarioAthens

ONT - ATH

ONTATH

Ontario

mié. 2/25

1:45 pm-1:40 am

2 stops25h 55m

Athens Eleftherios V.

mié. 3/11

6:15 am-10:25 pm

2 stops25h 10m

$539

OntarioAthens

ONT - ATH

ONTATH

Ontario

jue. 2/26

1:45 pm-5:35 pm

2 stops17h 50m

Athens Eleftherios V.

jue. 3/12

6:25 am-10:25 pm

2 stops25h 00m

$550

OntarioAthens

ONT - ATH

ONTATH

Ontario

sáb. 3/21

10:30 pm-1:00 pm

2 stops29h 30m

Athens Eleftherios V.

vie. 4/3

9:10 am-9:04 pm

1 stop21h 54m

$587

OntarioAthens

ONT - ATH

ONTATH

Ontario

mar. 4/28

7:00 am-4:30 pm

2 stops23h 30m

Athens Eleftherios V.

mar. 5/12

3:30 pm-11:20 am

2 stops29h 50m

$591

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 morning, with an average ticket price of $1,002. Departure times in the morning 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	19h 53m
Direct flights	None

The fastest flight from Ontario to Athens takes 19h 53m

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 17h 01m.
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 November 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 $635	Free Cancellation	Rating 7.4 9,046 reviews		Search United Airlines flights

Piraeus

Glyfada

Marathon

Hydra

Aegina

Skala

Loutraki

Tolo

Corinth

Agia Marina

Porto Cheli

Galaxidi

Chalcis

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.