What airlines fly to Ontario?

Norse Atlantic Airways, Turkish Airlines and British Airways are the top three most popular airlines that fly to Ontario from Athens according to our data. Norse Atlantic Airways is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

British Airways, American Airlines, and KLM are the most popular carriers operating from Athens Eleftherios V. to Ontario

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

Prices for flights from Athens Eleftherios V. Airport to Ontario Airport were last updated today.

How many operators does momondo search for flights from Athens Eleftherios V. Airport to Ontario Airport?

As of October 2025, there is 1 operator available to choose from for flights from Athens Eleftherios V. Airport to Ontario Airport.

How old do you have to be to fly from Athens Eleftherios V. Airport to Ontario Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Athens Eleftherios V. Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$586 Cheap Flights from Athens to Ontario in 2025/26

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12:50 pm - 11:54 amATH-ONT

33h 04m2 stops

10:47 am - 7:30 pmONT-ATH

22h 43m2 stops

$895American Airlines

Find Deal

Fri, Nov 14 - Tue, Nov 18

2:00 pm - 10:51 pmATH-ONT

18h 51m2 stops

1:45 pm - 4:35 pmONT-ATH

16h 50m2 stops

$927United Airlines

Find Deal

Sun, Nov 23 - Wed, Feb 25

3:25 am - 4:09 pmATH-ONT

22h 44m2 stops

6:00 am - 1:35 pmONT-ATH

21h 35m2 stops

$932Delta

Find Deal

Fri, Nov 14 - Wed, Nov 19

11:25 am - 10:35 pmATH-ONT

44h 10m2 stops

4:15 pm - 11:10 pmONT-ATH

20h 55m2 stops

$935United Airlines

Find Deal

Fri, Mar 27 - Tue, Mar 31

12:20 pm - 11:38 amATH-ONT

32h 18m1 stop

11:55 am - 10:55 pmONT-ATH

25h 00m2 stops

$948Delta

Find Deal

Fri, Mar 27 - Tue, Mar 31

12:20 pm - 11:38 amATH-ONT

32h 18m1 stop

6:45 am - 10:55 pmONT-ATH

30h 10m2 stops

$951Delta

Find Deal

Fri, Mar 27 - Tue, Mar 31

7:30 am - 10:31 pmATH-ONT

25h 01m2 stops

4:59 pm - 9:55 pmONT-ATH

18h 56m2 stops

$1,032British Airways

Find Deal

Thu, Feb 19 - Fri, Feb 20

7:00 pm - 10:37 pmATH-ONT

37h 37m2 stops

6:00 am - 11:10 amONT-ATH

44h 10m2 stops

$1,207Qatar Airways

Find Deal

Fri, Mar 6 - Sun, Mar 15

7:00 pm - 9:37 pmATH-ONT

36h 37m2 stops

6:00 am - 11:10 amONT-ATH

44h 10m2 stops

$1,289Qatar Airways

Find Deal

Sat, Mar 7 - Sun, Mar 15

7:45 am - 10:23 pmATH-ONT

24h 38m2 stops

4:49 pm - 9:55 pmONT-ATH

19h 06m2 stops

$1,470British Airways

Find Deal

Fri, Nov 28 - Fri, Jan 30

United Airlines flights from Athens to Ontario

Our best United Airlines deals on Athens to Ontario flight tickets

United Airlines

Nov 23

ATH2:00 pmAthens Eleftherios V.

18h 51m

2 stops

ONT10:51 pmOntario

Feb 25

ONT1:45 pmOntario

16h 50m

2 stops

ATH4:35 pmAthens Eleftherios V.

$927

Find similar

United Airlines

Mar 27

ATH11:25 amAthens Eleftherios V.

44h 10m

2 stops

ONT10:35 pmOntario

Mar 31

ONT4:15 pmOntario

20h 55m

2 stops

ATH11:10 pmAthens Eleftherios V.

$935

Find similar

United Airlines

Mar 27

ATH11:25 amAthens Eleftherios V.

44h 10m

2 stops

ONT10:35 pmOntario

Mar 31

ONT5:00 amOntario

27h 35m

2 stops

ATH6:35 pmAthens Eleftherios V.

$937

Find similar

Delta flights from Athens to Ontario

Our best Delta deals on Athens to Ontario flight tickets

Delta

Nov 14

ATH3:25 amAthens Eleftherios V.

22h 44m

2 stops

ONT4:09 pmOntario

Nov 19

ONT6:00 amOntario

21h 35m

2 stops

ATH1:35 pmAthens Eleftherios V.

$932

Find similar

Delta

Mar 27

ATH12:20 pmAthens Eleftherios V.

32h 18m

1 stop

ONT11:38 amOntario

Mar 31

ONT11:55 amOntario

25h 00m

2 stops

ATH10:55 pmAthens Eleftherios V.

$948

Find similar

Delta

Mar 27

ATH12:20 pmAthens Eleftherios V.

32h 18m

1 stop

ONT11:38 amOntario

Mar 31

ONT6:45 amOntario

30h 10m

2 stops

ATH10:55 pmAthens Eleftherios V.

$951

Find similar

Fly from

Fly to

Route

Depart

Return

Price

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Fri 11/14

12:50 pm-11:54 am

2 stops33h 04m

Ontario

Tue 11/18

10:47 am-7:30 pm

2 stops22h 43m

$895

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Sun 11/23

2:00 pm-10:51 pm

2 stops18h 51m

Ontario

Wed 2/25

1:45 pm-4:35 pm

2 stops16h 50m

$927

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Fri 11/14

3:25 am-4:09 pm

2 stops22h 44m

Ontario

Wed 11/19

6:00 am-1:35 pm

2 stops21h 35m

$932

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Fri 3/27

11:25 am-10:35 pm

2 stops44h 10m

Ontario

Tue 3/31

4:15 pm-11:10 pm

2 stops20h 55m

$935

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Fri 3/27

12:20 pm-11:38 am

1 stop32h 18m

Ontario

Tue 3/31

11:55 am-10:55 pm

2 stops25h 00m

$948

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Fri 3/27

12:20 pm-11:38 am

1 stop32h 18m

Ontario

Tue 3/31

6:45 am-10:55 pm

2 stops30h 10m

$951

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Thu 2/19

7:30 am-10:31 pm

2 stops25h 01m

Ontario

Fri 2/20

4:59 pm-9:55 pm

2 stops18h 56m

$1,032

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Fri 3/6

7:00 pm-10:37 pm

2 stops37h 37m

Ontario

Sun 3/15

6:00 am-11:10 am

2 stops44h 10m

$1,207

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Sat 3/7

7:00 pm-9:37 pm

2 stops36h 37m

Ontario

Sun 3/15

6:00 am-11:10 am

2 stops44h 10m

$1,289

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Fri 11/28

7:45 am-10:23 pm

2 stops24h 38m

Ontario

Fri 1/30

4:49 pm-9:55 pm

2 stops19h 06m

$1,470

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Athens to Ontario

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

Can stopping save me money on Athens to Ontario flights?

You could potentially save up to 16% on your flight if you consider stops on a Athens to Ontario flight.

When to book flights from Athens to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Athens to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Athens to Ontario (ATH to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Athens to Ontario

Direct flights	None

There are no direct flights from Athens to Ontario. There are no popular flight routes from Athens to Ontario.

Search flight deals

How far is Athens Eleftherios V. to Ontario by plane?
A flight from Athens Eleftherios V. to Ontario will travel around 6871.5 mi. Flights usually cover this in 18h 51m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Athens Eleftherios V. Airport to Ontario Airport?
Prices for flights from Athens Eleftherios V. Airport to Ontario Airport were last updated today.
How many operators does momondo search for flights from Athens Eleftherios V. Airport to Ontario Airport?
As of October 2025, there is 1 operator available to choose from for flights from Athens Eleftherios V. Airport to Ontario Airport.
How old do you have to be to fly from Athens Eleftherios V. Airport to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Athens Eleftherios V. Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Athens to Ontario?
momondo data reveals that the most frequently booked airline on the route from Athens to Ontario is United Airlines, representing 100% of all bookings.

Best airlines flying from Athens to Ontario

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $913	Free Cancellation	Rating 7.4 8,998 reviews		Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Athens to Ontario for you.

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

Yes. momondo allows you to filter the results for Athens to Ontario flights to just show those with flexible booking policies.

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

Once you have performed a search for Athens to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Athens to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.

An easier way to manage your Ontario 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.

Start using Trips

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Flights to New Yorkfrom $49

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Flights to Miamifrom $47

Flights to Chicagofrom $49

Flights to Orlandofrom $47

Flights to Las Vegasfrom $39

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Flights to Washington, D.C.from $40

Flights to Bostonfrom $60

Flights to Atlantafrom $47

Flights to Dallasfrom $49

Flights to Seattlefrom $48

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Flights from Athens Eleftherios V. to New York John F Kennedy Intl

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Flights from Athens Eleftherios V. to Washington, D.C. Dulles Intl

Flights from Athens Eleftherios V. to Boston Logan Intl

Cheap flights from Athens to Los Angeles from $586

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Athens to Los Angeles departing on 4/29. 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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United Airlines flights from Athens to Ontario

Our best United Airlines deals on Athens to Ontario flight tickets

Delta flights from Athens to Ontario

Our best Delta deals on Athens to Ontario flight tickets

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Use the filters below to find and compare flights from Athens to Ontario that are best for you.

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How to get the cheapest flight ticket from Athens to Ontario

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

Can stopping save me money on Athens to Ontario flights?

You could potentially save up to 16% on your flight if you consider stops on a Athens to Ontario flight.

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

British Airways, American Airlines, and KLM are the most popular carriers operating from Athens Eleftherios V. to Ontario

What airlines fly to Ontario?

When to book flights from Athens to Ontario

Cheap Athens to Ontario (ATH to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Athens to Ontario

Direct flights

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

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

How many operators does momondo search for flights from Athens Eleftherios V. Airport to Ontario Airport?

How old do you have to be to fly from Athens Eleftherios V. Airport to Ontario Airport?

What documentation or ID do you need to fly to Ontario Airport?

What is the most popular airline from Athens to Ontario?

Best airlines flying from Athens to Ontario

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

Why use momondo?

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

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

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

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

An easier way to manage your Ontario 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 the United States

Airports servicing California