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Cheap flights from Athens to Los Angeles from $592

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 2/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Athens to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:25 am - 8:58 pm
ATH
-
ONT
24h 33m2 stops
United Airlines Logo
6:00 am - 4:35 pm
ONT
-
ATH
24h 35m2 stops
$958United Airlines
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
6:25 am - 8:58 pm
ATH
-
ONT
24h 33m2 stops
United Airlines Logo
6:00 am - 4:35 pm
ONT
-
ATH
24h 35m2 stops
$959United Airlines
Thu, Jan 22 - Mon, Jan 26
KLM Logo
9:10 am - 6:15 pm
ATH
-
ONT
19h 05m1 stop
KLM Logo
7:00 am - 11:00 am
ONT
-
ATH
18h 00m1 stop
$963KLM
Tue, Apr 14 - Thu, Apr 23
United Airlines Logo
12:35 pm - 10:26 pm
ATH
-
ONT
19h 51m1 stop
United Airlines Logo
7:00 am - 10:35 am
ONT
-
ATH
17h 35m1 stop
$964United Airlines
Thu, Apr 16 - Thu, Apr 23
Delta Logo
9:10 am - 6:15 pm
ATH
-
ONT
19h 05m1 stop
Delta Logo
7:00 am - 11:00 am
ONT
-
ATH
18h 00m1 stop
$986Delta
Fri, Apr 17 - Sat, Apr 25
United Airlines Logo
6:55 am - 8:46 pm
ATH
-
ONT
23h 51m2 stops
United Airlines Logo
7:00 am - 10:35 am
ONT
-
ATH
17h 35m1 stop
$1,038United Airlines
Mon, Apr 13 - Thu, Apr 30
KLM Logo
9:10 am - 6:15 pm
ATH
-
ONT
19h 05m1 stop
KLM Logo
7:00 am - 11:00 am
ONT
-
ATH
18h 00m1 stop
$1,053KLM
Wed, Apr 15 - Sun, Apr 19
Iberia Logo
3:55 pm - 10:08 am
ATH
-
ONT
28h 13m2 stops
Iberia Logo
10:58 am - 3:15 pm
ONT
-
ATH
18h 17m2 stops
$1,056Iberia
Mon, Jan 26 - Mon, Feb 9
KLM Logo
9:10 am - 6:15 pm
ATH
-
ONT
19h 05m1 stop
KLM Logo
7:00 am - 11:00 am
ONT
-
ATH
18h 00m1 stop
$1,172KLM
Wed, Apr 15 - Mon, Apr 20
Air Serbia Logo
4:20 am - 10:09 pm
ATH
-
ONT
27h 49m2 stops
Air Serbia Logo
11:25 pm - 3:30 am
ONT
-
ATH
42h 05m2 stops
$1,183Air Serbia
Tue, May 5 - Mon, May 11

United Airlines flights from Athens to Ontario

Our best United Airlines deals on Athens to Ontario flight tickets
United Airlines
Jan 22
ATH6:25 amAthens Eleftherios V.
24h 33m
2 stops
ONT8:58 pmOntario
Jan 26
ONT6:00 amOntario
24h 35m
2 stops
ATH4:35 pmAthens Eleftherios V.
$958
Find similar
United Airlines
Jan 22
ATH6:25 amAthens Eleftherios V.
24h 33m
2 stops
ONT8:58 pmOntario
Jan 26
ONT6:00 amOntario
24h 35m
2 stops
ATH4:35 pmAthens Eleftherios V.
$959
Find similar
United Airlines
Apr 16
ATH12:35 pmAthens Eleftherios V.
19h 51m
1 stop
ONT10:26 pmOntario
Apr 23
ONT7:00 amOntario
17h 35m
1 stop
ATH10:35 amAthens Eleftherios V.
$964
Find similar

KLM flights from Athens to Ontario

Our best KLM deals on Athens to Ontario flight tickets
KLM
Apr 14
ATH9:10 amAthens Eleftherios V.
19h 05m
1 stop
ONT6:15 pmOntario
Apr 23
ONT7:00 amOntario
18h 00m
1 stop
ATH11:00 amAthens Eleftherios V.
$963
Find similar
KLM
Apr 15
ATH9:10 amAthens Eleftherios V.
19h 05m
1 stop
ONT6:15 pmOntario
Apr 19
ONT7:00 amOntario
18h 00m
1 stop
ATH11:00 amAthens Eleftherios V.
$1,053
Find similar
KLM
Apr 15
ATH9:10 amAthens Eleftherios V.
19h 05m
1 stop
ONT6:15 pmOntario
Apr 20
ONT7:00 amOntario
18h 00m
1 stop
ATH11:00 amAthens Eleftherios V.
$1,172
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Athens to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 17, 2025.
Use the filters below to find and compare flights from Athens to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Thu 1/22

6:25 am-8:58 pm

2 stops24h 33m

Ontario

Mon 1/26

6:00 am-4:35 pm

2 stops24h 35m

$958

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Thu 1/22

6:25 am-8:58 pm

2 stops24h 33m

Ontario

Mon 1/26

6:00 am-4:35 pm

2 stops24h 35m

$959

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Tue 4/14

9:10 am-6:15 pm

1 stop19h 05m

Ontario

Thu 4/23

7:00 am-11:00 am

1 stop18h 00m

$963

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Thu 4/16

12:35 pm-10:26 pm

1 stop19h 51m

Ontario

Thu 4/23

7:00 am-10:35 am

1 stop17h 35m

$964

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Fri 4/17

9:10 am-6:15 pm

1 stop19h 05m

Ontario

Sat 4/25

7:00 am-11:00 am

1 stop18h 00m

$986

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Mon 4/13

6:55 am-8:46 pm

2 stops23h 51m

Ontario

Thu 4/30

7:00 am-10:35 am

1 stop17h 35m

$1,038

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Wed 4/15

9:10 am-6:15 pm

1 stop19h 05m

Ontario

Sun 4/19

7:00 am-11:00 am

1 stop18h 00m

$1,053

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Mon 1/26

3:55 pm-10:08 am

2 stops28h 13m

Ontario

Mon 2/9

10:58 am-3:15 pm

2 stops18h 17m

$1,056

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Wed 4/15

9:10 am-6:15 pm

1 stop19h 05m

Ontario

Mon 4/20

7:00 am-11:00 am

1 stop18h 00m

$1,172

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

Tue 5/5

4:20 am-10:09 pm

2 stops27h 49m

Ontario

Mon 5/11

11:25 pm-3:30 am

2 stops42h 05m

$1,183

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

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.

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

Fastest flight time

19h 51m

Direct flights

None
The fastest flight from Athens to Ontario takes 19h 51m
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 19h 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?

  • 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?

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 AirlinesPriceFrom $913Free CancellationRating
7.4
9,092 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.

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