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

United Airlines and KLM are the most popular carriers operating from Ontario to Athens Eleftherios V.

What airlines fly to Athens?

Turkish Airlines, United Airlines and British Airways are the top three most popular airlines that fly to Athens from Ontario according to our data. Turkish Airlines is the first choice among our users, with 28% of people opting to fly with this airline when traveling to Athens. Keep in mind that there are 18 different airlines that fly to Athens on a routine basis, so you have a few additional options to choose from.

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 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.

$381 Cheap Flights from Ontario to Athens in 2026

Find the cheapest flights from Ontario to Athens

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 10:05 amONT Ontario-ATH Athens Eleftherios V.

18h 05m2 stops Houston George Bush Intcntl Newark

1:00 pm - 3:59 pmATH Athens Eleftherios V.-ONT Ontario

36h 59m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$810United Airlines

Wed, Nov 11 - Wed, Nov 25

1:00 pm - 1:30 amONT Ontario-ATH Athens Eleftherios V.

26h 30m2 stops Denver Intl Munich Franz Josef Strauss

1:00 pm - 6:44 pmATH Athens Eleftherios V.-ONT Ontario

39h 44m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$813United Airlines

Sun, Dec 6 - Thu, Dec 10

6:00 am - 10:05 amONT Ontario-ATH Athens Eleftherios V.

18h 05m2 stops Houston George Bush Intcntl Newark

6:45 am - 8:15 pmATH Athens Eleftherios V.-ONT Ontario

23h 30m2 stops Frankfurt am Main San Francisco

$833United Airlines

Wed, Nov 11 - Wed, Nov 18

6:00 am - 10:05 amONT Ontario-ATH Athens Eleftherios V.

18h 05m2 stops Houston George Bush Intcntl Newark

6:40 am - 6:47 pmATH Athens Eleftherios V.-ONT Ontario

22h 07m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$835United Airlines

Tue, Nov 10 - Tue, Nov 24

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

19h 00m2 stops Houston George Bush Intcntl Toronto Pearson Intl

6:45 am - 5:47 pmATH Athens Eleftherios V.-ONT Ontario

21h 02m2 stops Frankfurt am Main San Francisco

$837United Airlines

Wed, Jan 6 - Wed, Jan 20

12:00 pm - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

18h 30m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

6:10 am - 4:12 pmATH Athens Eleftherios V.-ONT Ontario

20h 02m2 stops Amsterdam Schiphol Salt Lake City

$839KLM

Wed, Jan 13 - Wed, Jan 27

7:00 am - 10:35 amONT Ontario-ATH Athens Eleftherios V.

17h 35m1 stop Chicago O'Hare Intl

6:45 am - 8:31 pmATH Athens Eleftherios V.-ONT Ontario

23h 46m2 stops Frankfurt am Main San Francisco

$848United Airlines

Sun, Oct 4 - Tue, Oct 13

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

31h 00m2 stops Salt Lake City Paris Charles de Gaulle

6:00 am - 10:40 pmATH Athens Eleftherios V.-ONT Ontario

26h 40m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

$852Delta

Mon, Sep 7 - Wed, Sep 16

9:01 am - 11:05 pmONT Ontario-ATH Athens Eleftherios V.

28h 04m2 stops San Francisco Munich Franz Josef Strauss

6:00 am - 8:53 pmATH Athens Eleftherios V.-ONT Ontario

24h 53m2 stops Munich Franz Josef Strauss Denver Intl

$856United Airlines

Wed, Sep 9 - Tue, Sep 15

12:17 pm - 1:15 amONT Ontario-ATH Athens Eleftherios V.

26h 58m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

6:00 am - 8:24 pmATH Athens Eleftherios V.-ONT Ontario

24h 24m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$857Delta

Wed, Sep 9 - Wed, Sep 16

Cheap last minute flights

Enter your travel dates to find the best prices.

7:05 am - 11:45 amONT Ontario-ATH Athens Eleftherios V.

18h 40m1 stop Dallas/Fort Worth

2:00 pm - 10:59 pmATH Athens Eleftherios V.-ONT Ontario

18h 59m1 stop Dallas/Fort Worth

$956British Airways

Sun, Aug 16 - Tue, Sep 1

7:05 am - 11:45 amONT Ontario-ATH Athens Eleftherios V.

18h 40m1 stop Dallas/Fort Worth

2:00 pm - 10:59 pmATH Athens Eleftherios V.-ONT Ontario

18h 59m1 stop Dallas/Fort Worth

$1,233British Airways

Mon, Aug 17 - Fri, Aug 28

7:05 am - 11:45 amONT Ontario-ATH Athens Eleftherios V.

18h 40m1 stop Dallas/Fort Worth

2:05 pm - 10:59 pmATH Athens Eleftherios V.-ONT Ontario

18h 54m1 stop Dallas/Fort Worth

$1,283British Airways

Thu, Aug 13 - Thu, Aug 20

7:05 am - 11:00 amONT Ontario-ATH Athens Eleftherios V.

17h 55m1 stop Atlanta Hartsfield-Jackson

9:45 am - 6:30 pmATH Athens Eleftherios V.-ONT Ontario

18h 45m1 stop Atlanta Hartsfield-Jackson

$1,303KLM

Sun, Aug 16 - Mon, Aug 24

7:00 am - 6:10 pmONT Ontario-ATH Athens Eleftherios V.

25h 10m2 stops Portland Frankfurt am Main

8:10 am - 10:38 pmATH Athens Eleftherios V.-ONT Ontario

24h 28m2 stops Frankfurt am Main New York John F Kennedy Intl

$1,327Multiple Airlines

Mon, Aug 17 - Fri, Aug 28

7:00 am - 6:10 pmONT Ontario-ATH Athens Eleftherios V.

25h 10m2 stops Portland Frankfurt am Main

8:10 am - 8:24 pmATH Athens Eleftherios V.-ONT Ontario

22h 14m2 stops Frankfurt am Main Portland

$1,468Multiple Airlines

Mon, Aug 17 - Mon, Aug 24

7:05 am - 11:45 amONT Ontario-ATH Athens Eleftherios V.

18h 40m1 stop Dallas/Fort Worth

7:25 am - 10:59 pmATH Athens Eleftherios V.-ONT Ontario

25h 34m2 stops London Heathrow Dallas/Fort Worth

$1,506British Airways

Sun, Aug 16 - Mon, Aug 24

7:05 am - 9:15 amONT Ontario-ATH Athens Eleftherios V.

16h 10m1 stop Atlanta Hartsfield-Jackson

11:30 am - 9:52 pmATH Athens Eleftherios V.-ONT Ontario

20h 22m1 stop Atlanta Hartsfield-Jackson

$1,600Air France

Fri, Aug 14 - Sun, Aug 16

7:05 am - 9:20 amONT Ontario-ATH Athens Eleftherios V.

16h 15m1 stop Atlanta Hartsfield-Jackson

9:45 am - 6:30 pmATH Athens Eleftherios V.-ONT Ontario

18h 45m1 stop Atlanta Hartsfield-Jackson

$1,609KLM

Sat, Aug 15 - Mon, Aug 17

11:59 pm - 3:45 pmONT Ontario-ATH Athens Eleftherios V.

29h 46m2 stops New York John F Kennedy Intl Belgrade Nikola Tesla

4:30 pm - 10:37 pmATH Athens Eleftherios V.-ONT Ontario

40h 07m2 stops Belgrade Nikola Tesla New York John F Kennedy Intl

$1,839Air Serbia

Sun, Aug 16 - Mon, Aug 24

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Delta flights from Ontario to Athens

Our best Delta deals on Ontario to Athens flight tickets

Delta

Sep 7

ONT6:00 amOntario

31h 00m

2 stops

ATH11:00 pmAthens Eleftherios V.

Sep 16

ATH6:00 amAthens Eleftherios V.

26h 40m

2 stops

ONT10:40 pmOntario

$852

Delta

Sep 9

ONT12:17 pmOntario

26h 58m

2 stops

ATH1:15 amAthens Eleftherios V.

Sep 16

ATH6:00 amAthens Eleftherios V.

24h 24m

2 stops

ONT8:24 pmOntario

$857

Delta

Sep 12

ONT6:00 pmOntario

43h 00m

2 stops

ATH11:00 pmAthens Eleftherios V.

Oct 5

ATH2:40 pmAthens Eleftherios V.

35h 43m

2 stops

ONT4:23 pmOntario

$878

Iberia flights from Ontario to Athens

Our best Iberia deals on Ontario to Athens flight tickets

Iberia

Sep 7

ONT7:05 amOntario

18h 40m

1 stop

ATH11:45 amAthens Eleftherios V.

Sep 16

ATH4:00 pmAthens Eleftherios V.

41h 36m

2 stops

ONT11:36 pmOntario

$863

Iberia

Aug 25

ONT7:05 amOntario

18h 40m

1 stop

ATH11:45 amAthens Eleftherios V.

Aug 31

ATH8:50 pmAthens Eleftherios V.

36h 09m

2 stops

ONT10:59 pmOntario

$973

Iberia

Aug 25

ONT7:05 amOntario

22h 15m

2 stops

ATH3:20 pmAthens Eleftherios V.

Aug 31

ATH8:50 pmAthens Eleftherios V.

36h 09m

2 stops

ONT10:59 pmOntario

$981

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Wed 11/11

6:00 am-10:05 am

2 stops18h 05m

Athens Eleftherios V.

Wed 11/25

1:00 pm-3:59 pm

2 stops36h 59m

$810

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Sun 12/6

1:00 pm-1:30 am

2 stops26h 30m

Athens Eleftherios V.

Thu 12/10

1:00 pm-6:44 pm

2 stops39h 44m

$813

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Wed 11/11

6:00 am-10:05 am

2 stops18h 05m

Athens Eleftherios V.

Wed 11/18

6:45 am-8:15 pm

2 stops23h 30m

$833

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Tue 11/10

6:00 am-10:05 am

2 stops18h 05m

Athens Eleftherios V.

Tue 11/24

6:40 am-6:47 pm

2 stops22h 07m

$835

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Wed 1/6

6:00 am-11:00 am

2 stops19h 00m

Athens Eleftherios V.

Wed 1/20

6:45 am-5:47 pm

2 stops21h 02m

$837

Quickest round-trip

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Wed 1/13

12:00 pm-4:30 pm

2 stops18h 30m

Athens Eleftherios V.

Wed 1/27

6:10 am-4:12 pm

2 stops20h 02m

$839

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Sun 10/4

7:00 am-10:35 am

1 stop17h 35m

Athens Eleftherios V.

Tue 10/13

6:45 am-8:31 pm

2 stops23h 46m

$848

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Mon 9/7

6:00 am-11:00 pm

2 stops31h 00m

Athens Eleftherios V.

Wed 9/16

6:00 am-10:40 pm

2 stops26h 40m

$852

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Wed 9/9

9:01 am-11:05 pm

2 stops28h 04m

Athens Eleftherios V.

Tue 9/15

6:00 am-8:53 pm

2 stops24h 53m

$856

OntarioAthens

ONT Ontario - ATH Athens Eleftherios V.

ONTATH

Ontario

Wed 9/9

12:17 pm-1:15 am

2 stops26h 58m

Athens Eleftherios V.

Wed 9/16

6:00 am-8:24 pm

2 stops24h 24m

$857

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 day to depart on your flight to Athens?

The cheapest day to depart on your flight to Athens is on a Wednesday when prices can be found for as low as $493. 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 Friday because tickets tend to average around $685. 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 in the evening when flights can be purchased for as low as $495. Flights to Athens are more costly at noon, with an average ticket price of $838. Departure times at noon 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 46% 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

Fastest flight time	17h 35m
Direct flights	None

The fastest flight from Ontario to Athens takes 17h 35m

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

Search flight deals

Frequently asked questions about flying from Ontario to Athens

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 35m.
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 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.

Piraeus

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Corinth

Skala

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Porto Cheli

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Tolo

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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.