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 41% 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.?

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 August 2025, there are 2 operators 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.

$424 Cheap Flights from Ontario to Athens in 2025

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Find the cheapest flights from Ontario to Athens

Round-trip

One-way

Last minute

Cheap round-trip flights

3:05 pm - 3:50 pmONT-ATH

38h 45m2 stops

7:45 am - 9:57 pmATH-ONT

24h 12m2 stops

$593British Airways

Find Deal

vie., feb. 13 - vie., feb. 27

7:00 am - 1:40 amONT-ATH

32h 40m2 stops

2:20 pm - 9:19 amATH-ONT

28h 59m2 stops

$594United Airlines

Find Deal

mar., feb. 17 - mié., feb. 25

5:40 am - 4:35 pmONT-ATH

24h 55m2 stops

2:05 pm - 9:19 amATH-ONT

29h 14m2 stops

$597United Airlines

Find Deal

lun., feb. 16 - vie., feb. 27

5:40 am - 6:05 pmONT-ATH

26h 25m2 stops

2:05 pm - 9:19 amATH-ONT

29h 14m2 stops

$598United Airlines

Find Deal

jue., feb. 12 - vie., feb. 27

10:00 pm - 8:20 amONT-ATH

24h 20m2 stops

3:30 pm - 10:22 pmATH-ONT

40h 52m2 stops

$620Delta

Find Deal

lun., oct. 13 - mié., oct. 22

10:00 pm - 8:20 amONT-ATH

24h 20m2 stops

1:40 pm - 11:39 pmATH-ONT

43h 59m2 stops

$655Delta

Find Deal

dom., oct. 12 - lun., oct. 20

7:05 am - 10:55 amONT-ATH

17h 50m1 stop

10:30 am - 10:23 pmATH-ONT

21h 53m1 stop

$663KLM

Find Deal

mar., sep. 9 - jue., sep. 18

5:10 am - 2:00 pmONT-ATH

22h 50m3 stops

12:10 pm - 10:30 pmATH-ONT

20h 20m2 stops

$789

Find Deal

mié., sep. 3 - mié., sep. 10

11:05 am - 3:15 pmONT-ATH

18h 10m2 stops

7:35 am - 9:57 pmATH-ONT

24h 22m2 stops

$811

Find Deal

mar., feb. 17 - mar., mar. 3

7:05 am - 10:55 amONT-ATH

17h 50m1 stop

10:30 am - 7:15 pmATH-ONT

18h 45m1 stop

$817KLM

Find Deal

mar., sep. 9 - jue., sep. 25

British Airways flights from Ontario to Athens

Our best British Airways deals on Ontario to Athens flight tickets

British Airways

Feb 13

ONT3:05 pmOntario

38h 45m

2 stops

ATH3:50 pmAthens Eleftherios V.

Feb 27

ATH7:45 amAthens Eleftherios V.

24h 12m

2 stops

ONT9:57 pmOntario

$593

Find similar

British Airways

Dec 5

ONT12:53 pmOntario

20h 22m

2 stops

ATH7:15 pmAthens Eleftherios V.

Dec 19

ATH7:45 amAthens Eleftherios V.

23h 57m

2 stops

ONT9:42 pmOntario

$631

Find similar

British Airways

Dec 5

ONT5:09 pmOntario

18h 46m

2 stops

ATH9:55 pmAthens Eleftherios V.

Dec 19

ATH7:45 amAthens Eleftherios V.

23h 57m

2 stops

ONT9:42 pmOntario

$636

Find similar

United Airlines flights from Ontario to Athens

Our best United Airlines deals on Ontario to Athens flight tickets

United Airlines

Feb 17

ONT7:00 amOntario

32h 40m

2 stops

ATH1:40 amAthens Eleftherios V.

Feb 25

ATH2:20 pmAthens Eleftherios V.

28h 59m

2 stops

ONT9:19 amOntario

$594

Find similar

United Airlines

Feb 16

ONT5:40 amOntario

24h 55m

2 stops

ATH4:35 pmAthens Eleftherios V.

Feb 27

ATH2:05 pmAthens Eleftherios V.

29h 14m

2 stops

ONT9:19 amOntario

$597

Find similar

United Airlines

Feb 12

ONT5:40 amOntario

26h 25m

2 stops

ATH6:05 pmAthens Eleftherios V.

Feb 27

ATH2:05 pmAthens Eleftherios V.

29h 14m

2 stops

ONT9:19 amOntario

$598

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioAthens

ONT - ATH

ONTATH

Ontario

vie. 2/13

3:05 pm-3:50 pm

2 stops38h 45m

Athens Eleftherios V.

vie. 2/27

7:45 am-9:57 pm

2 stops24h 12m

$593

OntarioAthens

ONT - ATH

ONTATH

Ontario

mar. 2/17

7:00 am-1:40 am

2 stops32h 40m

Athens Eleftherios V.

mié. 2/25

2:20 pm-9:19 am

2 stops28h 59m

$594

OntarioAthens

ONT - ATH

ONTATH

Ontario

lun. 2/16

5:40 am-4:35 pm

2 stops24h 55m

Athens Eleftherios V.

vie. 2/27

2:05 pm-9:19 am

2 stops29h 14m

$597

OntarioAthens

ONT - ATH

ONTATH

Ontario

jue. 2/12

5:40 am-6:05 pm

2 stops26h 25m

Athens Eleftherios V.

vie. 2/27

2:05 pm-9:19 am

2 stops29h 14m

$598

OntarioAthens

ONT - ATH

ONTATH

Ontario

lun. 10/13

10:00 pm-8:20 am

2 stops24h 20m

Athens Eleftherios V.

mié. 10/22

3:30 pm-10:22 pm

2 stops40h 52m

$620

OntarioAthens

ONT - ATH

ONTATH

Ontario

dom. 10/12

10:00 pm-8:20 am

2 stops24h 20m

Athens Eleftherios V.

lun. 10/20

1:40 pm-11:39 pm

2 stops43h 59m

$655

OntarioAthens

ONT - ATH

ONTATH

Ontario

mar. 9/9

7:05 am-10:55 am

1 stop17h 50m

Athens Eleftherios V.

jue. 9/18

10:30 am-10:23 pm

1 stop21h 53m

$663

OntarioAthens

ONT - ATH

ONTATH

Ontario

mié. 9/3

5:10 am-2:00 pm

3 stops22h 50m

Athens Eleftherios V.

mié. 9/10

12:10 pm-10:30 pm

2 stops20h 20m

$789

OntarioAthens

ONT - ATH

ONTATH

Ontario

mar. 2/17

11:05 am-3:15 pm

2 stops18h 10m

Athens Eleftherios V.

mar. 3/3

7:35 am-9:57 pm

2 stops24h 22m

$811

OntarioAthens

ONT - ATH

ONTATH

Ontario

mar. 9/9

7:05 am-10:55 am

1 stop17h 50m

Athens Eleftherios V.

jue. 9/25

10:30 am-7:15 pm

1 stop18h 45m

$817

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 month to fly to Athens?

The cheapest month to fly to Athens from Ontario is in February. Flight prices, which tend to average around $601, are often lower during this time because this is during the off-season. If you are unable to visit Athens during the month of February, then departing from Ontario during the month October is also very affordable. Most momondo users find prices during this month for around $653.

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 at noon when flights can be purchased for as low as $717. 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 31% 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

Direct flights	None

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 30m.
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 August 2025, there are 2 operators 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 (66% of total bookings). The next most popular airline is Delta (34%).

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 $550	Free Cancellation	Rating 7.4 8,930 reviews		Search United Airlines flights
Delta	PriceFrom $602	Free Cancellation	Rating 7.9 7,981 reviews		Search Delta flights

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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.

An easier way to manage your Athens trip

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Cheap flights from Ontario to Athens from $424

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Athens departing on 10/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Filter for what you want

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British Airways flights from Ontario to Athens

Our best British Airways deals on Ontario to Athens flight tickets

United Airlines flights from Ontario to Athens

Our best United Airlines deals on Ontario to Athens flight tickets

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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

What is the cheapest month to fly to Athens?

What is the cheapest day to depart on your flight to Athens?

What is the cheapest time of day to depart on your flight to Athens?

Can stopping save me money on Ontario to Athens flights?

You could potentially save up to 31% on your flight if you consider stops on a Ontario to Athens flight.

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.

What airlines fly to Athens?

When to book flights from Ontario to Athens

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

Direct flights

How far is Ontario to Athens Eleftherios V. by plane?

When did momondo last update prices for flights from Ontario Airport to Athens Eleftherios V. Airport?

How many operators does momondo search 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?

What documentation or ID do you need to fly to Athens Eleftherios V. Airport?

What is the most popular airline from Ontario to Athens?

Best airlines flying from Ontario to Athens

Compare and see reviews for airlines that fly from Ontario to Athens with momondo

Traveling to a place near Athens?

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Athens?

Can I find flights from Ontario to Athens with flexible booking policies on momondo?

How can momondo help me find flights from Ontario to Athens?

I’m not ready to book a flight from Ontario to Athens right now. Can momondo alert me if prices change?

An easier way to manage your Athens trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Greece

Fly your favorite airline to Athens

Airlines are sorted and displayed according to clicks in the past 7 days on momondo