Which airports can I use when flying from Ontario to Athens?

Flights from Ontario to Athens usually depart from Ontario (ONT) and arrive at Athens Eleftherios V. (ATH).

What cabin classes can I book on flights from Ontario to Athens?

Two cabin classes are available on flights from Ontario to Athens: • Economy Class • Premium Economy Class

Which airports do connecting flights from Ontario to Athens pass through?

Connecting flights from Ontario to Athens most commonly pass through: • Atlanta Hartsfield-Jackson (ATL) - 71% of one-stop connections • Dallas/Fort Worth (DFW) - 29% of one-stop connections

Can I save money by using flexible dates for flights from Ontario to Athens?

Yes. Flexible dates can save you up to 55% on flights from Ontario to Athens. Tuesday is the cheapest departure day at $571 round-trip on average, while Monday is the most expensive at $1,242, a difference of $671. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Athens?

Some of the most popular sights in Athens are Acropolis, Syntagma Square and Parthenon. These are among the most viewed places in Athens on KAYAK.

How long is a flight from Ontario to Athens?

A nonstop flight from Ontario to Athens takes 00m, covering 6,879 miles.

Do I need a passport to fly from Ontario to Athens?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

How are flight prices from Ontario to Athens looking right now?

One-way fares from Ontario to Athens are currently lower than usual. Average one-way flight prices are about $400, which is 34% below the typical average for this route.

How much time can I save by choosing a different layover airport from Ontario to Athens?

Flying via Atlanta Hartsfield-Jackson (ATL) gives the shortest average 1-stop total travel time at 18h 21m, compared with 19h 15m via Dallas/Fort Worth (DFW).

What is the time difference between Ontario and Athens?

Athens is 10 hours ahead of Ontario (Eastern European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Athens Eleftherios V. Airport (ATH)?

Athens Eleftherios V. Airport (ATH) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include: • Centauro • Record go • Europcar • SURPRICE CAR RENTAL • Alamo

How much should I expect to pay for a Ontario to Athens flight?

Round-trip flights from Ontario to Athens range from $653 to $823, with an average of $746 over the past 12 months. Anything below $653 counts as a good deal.

Which airline is the cheapest to fly from Ontario to Athens?

British Airways ($826) and Delta ($842) are the cheapest airlines to fly round-trip from Ontario to Athens according to KAYAK data over the last 5 days.

What’s the most popular layover airport when flying from Ontario to Athens?

Atlanta Hartsfield-Jackson (ATL) is the most popular layover for the Ontario to Athens route. 71% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via ATL.

What is the cheapest layover airport when flying from Ontario to Athens?

Flights via Atlanta Hartsfield-Jackson (ATL) offer the most affordable fares, with an average round-trip price of $829. Based on KAYAK data over the past 3 months.

When flying from Ontario to Athens which airport offers the shortest layover?

Atlanta Hartsfield-Jackson (ATL) had the shortest average connection time for Ontario to Athens layovers at 10h 06m over the past 3 months.

$371 CHEAP FLIGHTS from Ontario to Athens (ONT - ATH)

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$818

Typical prices: $653-$823

KLM, Air France

Wed 3/28Fri 4/6

ONT - ATH • 1 stop

Cheapest one-way

$371

Typical prices: $297-$619

British Airways

Wed 1/31

ONT - ATH • 2 stops

Nonstop flights

Not available

There are currently no direct flights between Ontario and Athens. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

February

Cheapest • 34% price drop

March

Most popular

Good to know

Top layover airports

Atlanta Hartsfield-Jackson (ATL)

Cheapest • Avg $829 (round-trip)

Dallas/Fort Worth (DFW)

Shortest trip • 19h 15m (one-way)

Insights

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We hope you love your trip to Athens!

Flight Deals

Cheap Flights from Ontario to Athens (ONT-ATH)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Ontario to Athens

Sun, Mar 28 - Tue, Apr 6

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

18h 00m1 stop Atlanta Hartsfield-Jackson

9:45 am - 10:14 pmATH Athens Eleftherios V.-ONT Ontario

22h 29m1 stop Atlanta Hartsfield-Jackson

$818Multiple Airlines

Wed, Jan 27 - Wed, Feb 3

2:21 pm - 1:00 amONT Ontario-ATH Athens Eleftherios V.

24h 39m2 stops Dallas/Fort Worth London Heathrow

7:55 am - 11:13 pmATH Athens Eleftherios V.-ONT Ontario

25h 18m2 stops London Heathrow Dallas/Fort Worth

$826British Airways

Mon, Feb 1 - Wed, Feb 10

1:24 pm - 11:20 pmONT Ontario-ATH Athens Eleftherios V.

23h 56m2 stops Phoenix Sky Harbor Intl London Heathrow

7:55 am - 11:13 pmATH Athens Eleftherios V.-ONT Ontario

25h 18m2 stops London Heathrow Dallas/Fort Worth

$832British Airways

Wed, Jan 27 - Thu, Feb 4

7:00 am - 1:40 pmONT Ontario-ATH Athens Eleftherios V.

20h 40m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

6:10 am - 10:14 pmATH Athens Eleftherios V.-ONT Ontario

26h 04m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$838Multiple Airlines

Wed, Jan 6 - Tue, Mar 9

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

23h 30m2 stops Seattle/Tacoma Intl Amsterdam Schiphol

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

20h 02m2 stops Amsterdam Schiphol Salt Lake City

$842Delta

Sun, Jan 17 - Tue, Jan 26

12:45 pm - 7:15 pmONT Ontario-ATH Athens Eleftherios V.

20h 30m2 stops Dallas/Fort Worth London Heathrow

7:40 am - 11:16 pmATH Athens Eleftherios V.-ONT Ontario

25h 36m2 stops London Heathrow Chicago O'Hare Intl

$851American Airlines

Tue, Mar 2 - Fri, Mar 5

6:00 am - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

24h 30m2 stops San Francisco Frankfurt am Main

6:45 am - 8:20 pmATH Athens Eleftherios V.-ONT Ontario

23h 35m2 stops Frankfurt am Main Denver Intl

$852United Airlines

Tue, Mar 2 - Fri, Mar 5

6:00 am - 9:20 pmONT Ontario-ATH Athens Eleftherios V.

29h 20m2 stops San Francisco Frankfurt am Main

12:25 pm - 12:33 pmATH Athens Eleftherios V.-ONT Ontario

34h 08m2 stops Newark Denver Intl

$854United Airlines

Sat, Jan 16 - Wed, Jan 27

1:00 pm - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

41h 30m2 stops Denver Intl Frankfurt am Main

7:05 am - 8:20 pmATH Athens Eleftherios V.-ONT Ontario

23h 15m3 stops Zurich Newark Denver Intl

$857United Airlines

Sun, Jan 17 - Mon, Jan 25

7:00 am - 1:40 pmONT Ontario-ATH Athens Eleftherios V.

20h 40m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

2:40 pm - 4:12 pmATH Athens Eleftherios V.-ONT Ontario

35h 32m2 stops Paris Charles de Gaulle Salt Lake City

$858Delta

Recent last minute flight deals from Ontario to Athens

Mon, Oct 5 - Mon, Oct 12

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

17h 35m1 stop Chicago O'Hare Intl

12:35 pm - 10:49 pmATH Athens Eleftherios V.-ONT Ontario

20h 14m1 stop Chicago O'Hare Intl

$1,033United Airlines

Tue, Oct 6 - Thu, Oct 15

7:07 am - 11:00 amONT Ontario-ATH Athens Eleftherios V.

17h 53m1 stop Atlanta Hartsfield-Jackson

9:45 am - 6:22 pmATH Athens Eleftherios V.-ONT Ontario

18h 37m1 stop Atlanta Hartsfield-Jackson

$1,069Delta

Tue, Oct 6 - Thu, Oct 15

7:07 am - 11:00 amONT Ontario-ATH Athens Eleftherios V.

17h 53m1 stop Atlanta Hartsfield-Jackson

6:00 am - 10:43 pmATH Athens Eleftherios V.-ONT Ontario

26h 43m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

$1,073Delta

Sun, Oct 4 - Fri, Jan 8

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

17h 35m1 stop Chicago O'Hare Intl

6:40 am - 5:47 pmATH Athens Eleftherios V.-ONT Ontario

21h 07m2 stops Munich Franz Josef Strauss San Francisco

$1,074United Airlines

Tue, Oct 6 - Tue, Dec 8

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

17h 35m1 stop Chicago O'Hare Intl

6:45 am - 9:11 pmATH Athens Eleftherios V.-ONT Ontario

24h 26m2 stops Frankfurt am Main Denver Intl

$1,076United Airlines

Mon, Oct 5 - Tue, Jan 12

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

16h 15m1 stop Atlanta Hartsfield-Jackson

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

20h 02m2 stops Amsterdam Schiphol Salt Lake City

$1,077KLM

Mon, Oct 5 - Fri, Dec 11

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

17h 35m1 stop Chicago O'Hare Intl

6:40 am - 9:11 pmATH Athens Eleftherios V.-ONT Ontario

24h 31m2 stops Munich Franz Josef Strauss Denver Intl

$1,078United Airlines

Mon, Oct 5 - Mon, Dec 7

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

17h 55m1 stop Atlanta Hartsfield-Jackson

5:55 am - 4:22 pmATH Athens Eleftherios V.-ONT Ontario

20h 27m2 stops Amsterdam Schiphol Salt Lake City

$1,127KLM

Wed, Oct 7 - Tue, Dec 8

7:07 am - 11:00 amONT Ontario-ATH Athens Eleftherios V.

17h 53m1 stop Atlanta Hartsfield-Jackson

6:10 am - 4:22 pmATH Athens Eleftherios V.-ONT Ontario

20h 12m2 stops Amsterdam Schiphol Salt Lake City

$1,142KLM

Wed, Oct 7 - Mon, Dec 7

7:07 am - 11:00 amONT Ontario-ATH Athens Eleftherios V.

17h 53m1 stop Atlanta Hartsfield-Jackson

5:55 am - 4:22 pmATH Athens Eleftherios V.-ONT Ontario

20h 27m2 stops Amsterdam Schiphol Salt Lake City

$1,192Multiple Airlines

Booking Insights

Price, demand and travel trends for Ontario to Athens flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Airlines

Layovers

Which airline is the cheapest to fly from Ontario to Athens?: British Airways ($826) and Delta ($842) are the cheapest airlines to fly round-trip from Ontario to Athens according to KAYAK data over the last 5 days.

Find deals

Low season	December
High season	March
Cheapest flight	$371

One-way flight from Ontario to Athens

When to book flights from Ontario to Athens

Are your dates flexible? Find out the best times to travel from Ontario to Athens based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from Ontario to Athens?
Two cabin classes are available on flights from Ontario to Athens:

• Economy Class
• Premium Economy Class
How long is a flight from Ontario to Athens?
A nonstop flight from Ontario to Athens takes 00m, covering 6,879 miles.
Do I need a passport to fly from Ontario to Athens?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How much should I expect to pay for a Ontario to Athens flight?
Round-trip flights from Ontario to Athens range from $653 to $823, with an average of $746 over the past 12 months. Anything below $653 counts as a good deal.
How are flight prices from Ontario to Athens looking right now?
One-way fares from Ontario to Athens are currently lower than usual. Average one-way flight prices are about $400, which is 34% below the typical average for this route.
What car rental options are available at Athens Eleftherios V. Airport (ATH)?
Athens Eleftherios V. Airport (ATH) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include:

• Centauro
• Record go
• Europcar
• SURPRICE CAR RENTAL
• Alamo
Which airports can I use when flying from Ontario to Athens?
Flights from Ontario to Athens usually depart from Ontario (ONT) and arrive at Athens Eleftherios V. (ATH).
Which airports do connecting flights from Ontario to Athens pass through?
Connecting flights from Ontario to Athens most commonly pass through:

• Atlanta Hartsfield-Jackson (ATL) - 71% of one-stop connections
• Dallas/Fort Worth (DFW) - 29% of one-stop connections
Can I save money by using flexible dates for flights from Ontario to Athens?
Yes. Flexible dates can save you up to 55% on flights from Ontario to Athens. Tuesday is the cheapest departure day at $571 round-trip on average, while Monday is the most expensive at $1,242, a difference of $671.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How much time can I save by choosing a different layover airport from Ontario to Athens?
Flying via Atlanta Hartsfield-Jackson (ATL) gives the shortest average 1-stop total travel time at 18h 21m, compared with 19h 15m via Dallas/Fort Worth (DFW).
What is the time difference between Ontario and Athens?
Athens is 10 hours ahead of Ontario (Eastern European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Athens?
Some of the most popular sights in Athens are Acropolis, Syntagma Square and Parthenon. These are among the most viewed places in Athens on KAYAK.

If your dates are flexible, aim for a Tuesday departure and avoid flying on Monday. On this route, Tuesday flights average $571, about $671 less than Monday fares (54% savings) based on the last 12 months.
If you can choose when to travel, plan your Ontario to Athens trip for February. Fares historically average $491 round-trip in that month - typically $751 less than the most expensive month, which is July (based on the last 12 months).

More options for your flight from Ontario to Athens

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Return flight

Complete your trip to Athens with a hotel stay or car rental

Car rentals in Athens

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Vacations in Athens

ONT - ATH

$371 Find Cheap Flights from Ontario to Athens - Compare and Save

Everything you should know

Cheap Flights from Ontario to Athens (ONT-ATH)

Recent round-trip flight deals from Ontario to Athens

Recent one-way flight deals from Ontario to Athens

Recent last minute flight deals from Ontario to Athens

Price, demand and travel trends for Ontario to Athens flights

Which airline is the cheapest to fly from Ontario to Athens?

What’s the most popular layover airport when flying from Ontario to Athens?

What is the cheapest layover airport when flying from Ontario to Athens?

When flying from Ontario to Athens which airport offers the shortest layover?

Key details for Ontario to Athens flights

Low season

High season

Cheapest flight

When to book flights from Ontario to Athens

Your Ontario to Athens flight questions, answered

Your guide to booking Ontario to Athens flights

More options for your flight from Ontario to Athens

Complete your trip to Athens with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Ontario to Athens

Find direct flights to and from Ontario and Athens

Flights from domestic origins to Athens

Flights to other popular destinations

Find deals for your return flight