What airlines fly to Ontario?

Lufthansa, Turkish Airlines and United Airlines are the top three most popular airlines that fly to Ontario from Athens according to our data. Lufthansa is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 6 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, Delta, 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 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.

$662 Cheap Flights from Athens to Ontario in 2026/27

Find the cheapest flights from Athens to Los Angeles

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9:45 pm - 7:30 pmATH Athens Eleftherios V.-ONT Ontario

31h 45m3 stops Barcelona-El Prat Lisbon Humberto Delgado San Francisco

6:45 am - 11:55 pmONT Ontario-ATH Athens Eleftherios V.

31h 10m3 stops Denver Intl Reykjavik Keflavik Intl Dublin

$1,032Multiple Airlines

Thu, Nov 12 - Wed, Nov 25

9:45 pm - 7:30 pmATH Athens Eleftherios V.-ONT Ontario

31h 45m3 stops Barcelona-El Prat Lisbon Humberto Delgado San Francisco

6:45 am - 9:00 pmONT Ontario-ATH Athens Eleftherios V.

28h 15m3 stops Denver Intl Reykjavik Keflavik Intl Barcelona-El Prat

$1,072Multiple Airlines

Thu, Nov 12 - Wed, Nov 25

7:05 am - 8:25 pmATH Athens Eleftherios V.-ONT Ontario

23h 20m2 stops Zurich San Francisco

7:00 am - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

23h 30m2 stops Chicago O'Hare Intl Frankfurt am Main

$1,081United Airlines

Thu, Feb 4 - Mon, Feb 8

9:45 pm - 7:30 pmATH Athens Eleftherios V.-ONT Ontario

31h 45m3 stops Barcelona-El Prat Lisbon Humberto Delgado San Francisco

7:30 am - 6:35 pmONT Ontario-ATH Athens Eleftherios V.

25h 05m2 stops Houston George Bush Intcntl Rome Fiumicino

$1,087Multiple Airlines

Thu, Nov 12 - Wed, Nov 25

11:50 am - 12:24 amATH Athens Eleftherios V.-ONT Ontario

22h 34m2 stops Paris Orly San Francisco

8:44 am - 6:35 pmONT Ontario-ATH Athens Eleftherios V.

23h 51m3 stops Las Vegas Harry Reid Intl San Francisco Rome Fiumicino

$1,090Multiple Airlines

Sun, Nov 22 - Tue, Dec 8

6:45 am - 8:38 pmATH Athens Eleftherios V.-ONT Ontario

23h 53m2 stops Frankfurt am Main San Francisco

6:00 am - 11:00 amONT Ontario-ATH Athens Eleftherios V.

19h 00m2 stops San Francisco Montreal Pierre Elliott Trudeau Intl

$1,091United Airlines

Fri, Dec 4 - Thu, Jan 7

6:10 am - 4:24 pmATH Athens Eleftherios V.-ONT Ontario

20h 14m2 stops Amsterdam Schiphol Salt Lake City

7:05 am - 1:40 pmONT Ontario-ATH Athens Eleftherios V.

20h 35m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

$1,093Delta

Thu, Nov 12 - Wed, Nov 25

6:45 am - 8:32 pmATH Athens Eleftherios V.-ONT Ontario

23h 47m2 stops Frankfurt am Main Denver Intl

6:00 am - 11:00 amONT Ontario-ATH Athens Eleftherios V.

19h 00m2 stops San Francisco Montreal Pierre Elliott Trudeau Intl

$1,096United Airlines

Fri, Mar 5 - Sun, Mar 7

7:05 am - 5:35 pmATH Athens Eleftherios V.-ONT Ontario

44h 30m2 stops Zurich San Francisco

6:37 pm - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

35h 53m3 stops San Francisco Boston Logan Intl Frankfurt am Main

$1,097United Airlines

Thu, Feb 4 - Mon, Feb 8

7:05 am - 8:25 pmATH Athens Eleftherios V.-ONT Ontario

23h 20m2 stops Zurich San Francisco

7:00 am - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

23h 30m2 stops Chicago O'Hare Intl Frankfurt am Main

$1,099United Airlines

Thu, Feb 4 - Mon, Feb 8

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Qatar Airways flights from Athens to Ontario

Our best Qatar Airways deals on Athens to Ontario flight tickets

Qatar Airways

Apr 15

ATH8:00 pmAthens Eleftherios V.

27h 18m

2 stops

ONT1:18 pmOntario

Apr 22

ONT12:00 pmOntario

33h 00m

2 stops

ATH7:00 amAthens Eleftherios V.

$1,206

Qatar Airways

Feb 25

ATH7:00 pmAthens Eleftherios V.

33h 42m

2 stops

ONT6:42 pmOntario

Mar 4

ONT2:29 pmOntario

34h 41m

2 stops

ATH11:10 amAthens Eleftherios V.

$1,477

Qatar Airways

Apr 21

ATH8:00 pmAthens Eleftherios V.

27h 18m

2 stops

ONT1:18 pmOntario

Apr 25

ONT2:08 pmOntario

30h 52m

2 stops

ATH7:00 amAthens Eleftherios V.

$1,520

KLM flights from Athens to Ontario

Our best KLM deals on Athens to Ontario flight tickets

KLM

Apr 14

ATH9:45 amAthens Eleftherios V.

18h 37m

1 stop

ONT6:22 pmOntario

Apr 22

ONT7:00 amOntario

18h 00m

1 stop

ATH11:00 amAthens Eleftherios V.

$1,290

KLM

Apr 16

ATH9:45 amAthens Eleftherios V.

18h 37m

1 stop

ONT6:22 pmOntario

Apr 23

ONT7:00 amOntario

18h 00m

1 stop

ATH11:00 amAthens Eleftherios V.

$1,406

KLM

Nov 13

ATH6:10 amAthens Eleftherios V.

20h 14m

2 stops

ONT4:24 pmOntario

Jul 20

ONT7:00 amOntario

18h 00m

1 stop

ATH11:00 amAthens Eleftherios V.

$1,538

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AthensOntario

ATH Athens Eleftherios V. - ONT Ontario

ATHONT

Athens Eleftherios V.

Thu 11/12

9:45 pm-7:30 pm

3 stops31h 45m

Ontario

Wed 11/25

6:45 am-11:55 pm

3 stops31h 10m

$1,032

AthensOntario

ATH Athens Eleftherios V. - ONT Ontario

ATHONT

Athens Eleftherios V.

Thu 11/12

9:45 pm-7:30 pm

3 stops31h 45m

Ontario

Wed 11/25

6:45 am-9:00 pm

3 stops28h 15m

$1,072

AthensOntario

ATH Athens Eleftherios V. - ONT Ontario

ATHONT

Athens Eleftherios V.

Thu 2/4

7:05 am-8:25 pm

2 stops23h 20m

Ontario

Mon 2/8

7:00 am-4:30 pm

2 stops23h 30m

$1,081

AthensOntario

ATH Athens Eleftherios V. - ONT Ontario

ATHONT

Athens Eleftherios V.

Thu 11/12

9:45 pm-7:30 pm

3 stops31h 45m

Ontario

Wed 11/25

7:30 am-6:35 pm

2 stops25h 05m

$1,087

AthensOntario

ATH Athens Eleftherios V. - ONT Ontario

ATHONT

Athens Eleftherios V.

Sun 11/22

11:50 am-12:24 am

2 stops22h 34m

Ontario

Tue 12/8

8:44 am-6:35 pm

3 stops23h 51m

$1,090

AthensOntario

ATH Athens Eleftherios V. - ONT Ontario

ATHONT

Athens Eleftherios V.

Fri 12/4

6:45 am-8:38 pm

2 stops23h 53m

Ontario

Thu 1/7

6:00 am-11:00 am

2 stops19h 00m

$1,091

Quickest round-trip

AthensOntario

ATH Athens Eleftherios V. - ONT Ontario

ATHONT

Athens Eleftherios V.

Thu 11/12

6:10 am-4:24 pm

2 stops20h 14m

Ontario

Wed 11/25

7:05 am-1:40 pm

2 stops20h 35m

$1,093

AthensOntario

ATH Athens Eleftherios V. - ONT Ontario

ATHONT

Athens Eleftherios V.

Fri 3/5

6:45 am-8:32 pm

2 stops23h 47m

Ontario

Sun 3/7

6:00 am-11:00 am

2 stops19h 00m

$1,096

AthensOntario

ATH Athens Eleftherios V. - ONT Ontario

ATHONT

Athens Eleftherios V.

Thu 2/4

7:05 am-5:35 pm

2 stops44h 30m

Ontario

Mon 2/8

6:37 pm-4:30 pm

3 stops35h 53m

$1,097

AthensOntario

ATH Athens Eleftherios V. - ONT Ontario

ATHONT

Athens Eleftherios V.

Thu 2/4

7:05 am-8:25 pm

2 stops23h 20m

Ontario

Mon 2/8

7:00 am-4:30 pm

2 stops23h 30m

$1,099

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 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 57% 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

Best Price Found	$662
Fastest flight time	20h 14m
Direct flights	None

The best one-way flight to Ontario from Athens in the past 72 hours is $662. The best round-trip flight deal from Athens to Ontario found on momondo in the last 72 hours is $1,032.

The fastest flight from Athens to Ontario takes 20h 14m

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

Search flight deals

Frequently asked questions about flying from Athens to Ontario

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 20h 14m, 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 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.

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

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Sun 11/29

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Cheap flights from Athens to Los Angeles from $662

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 12/8. 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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Qatar Airways flights from Athens to Ontario

Our best Qatar Airways deals on Athens to Ontario flight tickets

KLM flights from Athens to Ontario

Our best KLM deals on Athens to Ontario flight tickets

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How to get the cheapest flight ticket from Athens to Ontario

Can stopping save me money on Athens to Ontario flights?

What is the cheapest airline that flies 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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Athens to Ontario

Why use momondo?

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

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

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List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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