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Cheap flights from Athens to Los Angeles from $418

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 5/21. 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
12:35 pm - 10:31 pm
ATH
-
ONT
19h 56m
1 stop
United Airlines Logo
7:00 am - 10:35 am
ONT
-
ATH
17h 35m
1 stop
$951United Airlines
lun, apr 27 - dom, mag 10
United Airlines Logo
12:35 pm - 10:31 pm
ATH
-
ONT
19h 56m
1 stop
United Airlines Logo
7:00 am - 10:35 am
ONT
-
ATH
17h 35m
1 stop
$954United Airlines
dom, apr 26 - dom, mag 3
United Airlines Logo
6:45 am - 10:31 pm
ATH
-
ONT
25h 46m
2 stops
United Airlines Logo
6:00 am - 10:00 am
ONT
-
ATH
18h 00m
2 stops
$961United Airlines
lun, apr 27 - lun, mag 4
United Airlines Logo
12:35 pm - 10:31 pm
ATH
-
ONT
19h 56m
1 stop
United Airlines Logo
10:37 am - 6:40 pm
ONT
-
ATH
22h 03m
2 stops
$975United Airlines
lun, apr 27 - lun, mag 4
Multiple Airlines Logo
9:45 am - 9:00 pm
ATH
-
ONT
21h 15m
1 stop
Multiple Airlines Logo
7:05 am - 11:00 am
ONT
-
ATH
17h 55m
1 stop
$985Multiple Airlines
lun, apr 27 - dom, mag 10
KLM Logo
9:45 am - 9:00 pm
ATH
-
ONT
21h 15m
1 stop
KLM Logo
7:05 am - 11:00 am
ONT
-
ATH
17h 55m
1 stop
$991KLM
lun, apr 20 - lun, mag 4
United Airlines Logo
12:35 pm - 10:46 pm
ATH
-
ONT
20h 11m
1 stop
United Airlines Logo
6:30 am - 10:35 am
ONT
-
ATH
18h 05m
1 stop
$998United Airlines
mer, lug 8 - ven, ago 7
KLM Logo
9:45 am - 9:00 pm
ATH
-
ONT
21h 15m
1 stop
KLM Logo
7:05 am - 11:00 am
ONT
-
ATH
17h 55m
1 stop
$1,000KLM
ven, apr 17 - dom, apr 26
Delta Logo
9:45 am - 6:33 pm
ATH
-
ONT
18h 48m
1 stop
Delta Logo
10:15 pm - 11:00 am
ONT
-
ATH
26h 45m
1 stop
$1,006Delta
lun, apr 27 - lun, mag 4
British Airways Logo
12:00 pm - 9:28 pm
ATH
-
ONT
19h 28m
1 stop
British Airways Logo
8:15 am - 11:45 am
ONT
-
ATH
17h 30m
1 stop
$1,007British Airways
lun, ago 24 - dom, set 6

British Airways flights from Athens to Ontario

Our best British Airways deals on Athens to Ontario flight tickets
British Airways
Aug 24
ATH12:00 pmAthens Eleftherios V.
19h 28m
1 stop
ONT9:28 pmOntario
Sep 6
ONT8:15 amOntario
17h 30m
1 stop
ATH11:45 amAthens Eleftherios V.
$1,007
British Airways
Jul 8
ATH12:00 pmAthens Eleftherios V.
20h 34m
1 stop
ONT10:34 pmOntario
Jul 15
ONT7:00 amOntario
18h 45m
1 stop
ATH11:45 amAthens Eleftherios V.
$1,072
British Airways
Aug 27
ATH12:00 pmAthens Eleftherios V.
19h 28m
1 stop
ONT9:28 pmOntario
Sep 3
ONT8:15 amOntario
17h 30m
1 stop
ATH11:45 amAthens Eleftherios V.
$1,080

United Airlines flights from Athens to Ontario

Our best United Airlines deals on Athens to Ontario flight tickets
United Airlines
Apr 27
ATH12:35 pmAthens Eleftherios V.
19h 56m
1 stop
ONT10:31 pmOntario
May 10
ONT7:00 amOntario
17h 35m
1 stop
ATH10:35 amAthens Eleftherios V.
$951
United Airlines
Apr 26
ATH12:35 pmAthens Eleftherios V.
19h 56m
1 stop
ONT10:31 pmOntario
May 3
ONT7:00 amOntario
17h 35m
1 stop
ATH10:35 amAthens Eleftherios V.
$954
United Airlines
Apr 27
ATH6:45 amAthens Eleftherios V.
25h 46m
2 stops
ONT10:31 pmOntario
May 4
ONT6:00 amOntario
18h 00m
2 stops
ATH10:00 amAthens Eleftherios V.
$961

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 marzo 15, 2026.
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

Cheapest round-trip

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

lun 4/27

12:35 pm-10:31 pm

1 stop19h 56m

Ontario

dom 5/10

7:00 am-10:35 am

1 stop17h 35m

$951

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

dom 4/26

12:35 pm-10:31 pm

1 stop19h 56m

Ontario

dom 5/3

7:00 am-10:35 am

1 stop17h 35m

$954

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

lun 4/27

6:45 am-10:31 pm

2 stops25h 46m

Ontario

lun 5/4

6:00 am-10:00 am

2 stops18h 00m

$961

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

lun 4/27

12:35 pm-10:31 pm

1 stop19h 56m

Ontario

lun 5/4

10:37 am-6:40 pm

2 stops22h 03m

$975

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

lun 4/27

9:45 am-9:00 pm

1 stop21h 15m

Ontario

dom 5/10

7:05 am-11:00 am

1 stop17h 55m

$985

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

lun 4/20

9:45 am-9:00 pm

1 stop21h 15m

Ontario

lun 5/4

7:05 am-11:00 am

1 stop17h 55m

$991

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

mer 7/8

12:35 pm-10:46 pm

1 stop20h 11m

Ontario

ven 8/7

6:30 am-10:35 am

1 stop18h 05m

$998

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

ven 4/17

9:45 am-9:00 pm

1 stop21h 15m

Ontario

dom 4/26

7:05 am-11:00 am

1 stop17h 55m

$1,000

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

lun 4/27

9:45 am-6:33 pm

1 stop18h 48m

Ontario

lun 5/4

10:15 pm-11:00 am

1 stop26h 45m

$1,006
Quickest round-trip

AthensOntario

ATH - ONT

ATHONT

Athens Eleftherios V.

lun 8/24

12:00 pm-9:28 pm

1 stop19h 28m

Ontario

dom 9/6

8:15 am-11:45 am

1 stop17h 30m

$1,007

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

18h 14m

Direct flights

None
The fastest flight from Athens to Ontario takes 18h 14m
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 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.

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