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?

Only Economy Class is available on flights from Ontario to Athens.

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

One-stop flights from Ontario to Athens most commonly connect through: • Atlanta Hartsfield-Jackson (ATL) - 70% of one-stop connections • Dallas/Fort Worth (DFW) - 23% of one-stop connections • Chicago O'Hare Intl (ORD) - 7% 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 42% on flights from Ontario to Athens. Sunday is the cheapest departure day at $746 round-trip on average, while Monday is the most expensive at $1,279, a difference of $533. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

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 $468, which is 23% 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 17m, compared with 19h 15m via Dallas/Fort Worth (DFW) and 19h 16m via Chicago O'Hare Intl (ORD).

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: • Record go • Centauro • 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 $746 to $998, with an average of $796 over the past 12 months. Anything below $746 counts as a good deal.

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

KLM ($841) and United Airlines ($850) 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. 70% 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 $971. 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 02m over the past 3 months.

$379 CHEAP FLIGHTS from Ontario to Athens (ONT - ATH)

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

Cheapest round-trip

$787

Typical prices: $746-$998

Multiple Airlines

Sun 11/11Sun 11/18

ONT - ATH • 2 stops

Cheapest one-way

$379

Typical prices: $482-$719

British Airways

Sat 1/13

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 • 38% price drop

April

Most popular

Good to know

Top layover airports

Atlanta Hartsfield-Jackson (ATL)

Cheapest • Avg $971 (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!

Cheap Flights from Ontario to Athens (ONT-ATH)

Cheap flights from Ontario to Athens with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Round-trip

One-way

Last minute

Wed, Nov 11 - Wed, Nov 18

11:52 am - 6:05 amONT Ontario-ATH Athens Eleftherios V.

32h 13m2 stops Denver Intl Istanbul

10:10 am - 11:51 pmATH Athens Eleftherios V.-ONT Ontario

23h 41m2 stops Istanbul Denver Intl

$787Multiple Airlines

Wed, Jan 13 - Wed, Jan 27

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

$841KLM

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

$850United Airlines

Tue, Jan 12 - Tue, Jan 26

9:45 am - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

20h 45m2 stops San Francisco Frankfurt am Main

7:05 am - 8:01 pmATH Athens Eleftherios V.-ONT Ontario

22h 56m2 stops Zurich San Francisco

$851United Airlines

Thu, Jan 14 - Thu, Jan 28

12:00 pm - 4:35 pmONT Ontario-ATH Athens Eleftherios V.

18h 35m2 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

$891KLM

Fri, Jan 15 - Fri, Jan 22

4:19 pm - 10:00 pmONT Ontario-ATH Athens Eleftherios V.

19h 41m2 stops Phoenix Sky Harbor Intl London Heathrow

7:35 am - 11:13 pmATH Athens Eleftherios V.-ONT Ontario

25h 38m2 stops London Heathrow Dallas/Fort Worth

$896British Airways

Mon, Feb 8 - Mon, Feb 22

11:20 am - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

19h 10m2 stops San Francisco Frankfurt am Main

1:30 pm - 11:01 pmATH Athens Eleftherios V.-ONT Ontario

19h 31m2 stops Frankfurt am Main San Francisco

$900United Airlines

Sun, Jan 10 - Sun, Jan 24

11:20 am - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

19h 10m2 stops San Francisco Frankfurt am Main

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

23h 20m2 stops Zurich San Francisco

$901United Airlines

Sat, Jan 30 - Fri, Feb 12

11:20 am - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

19h 10m2 stops San Francisco Frankfurt am Main

6:40 am - 5:35 pmATH Athens Eleftherios V.-ONT Ontario

20h 55m2 stops Munich Franz Josef Strauss San Francisco

$903United Airlines

Tue, Jan 19 - Wed, Feb 3

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

$911KLM

Thu, Oct 15 - Thu, Oct 22

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

$1,114Multiple Airlines

Tue, Oct 20 - Mon, Nov 2

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

17h 35m1 stop Chicago O'Hare Intl

6:55 am - 8:15 pmATH Athens Eleftherios V.-ONT Ontario

23h 20m2 stops Zurich San Francisco

$1,129United Airlines

Tue, Oct 20 - Tue, Oct 27

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

17h 35m1 stop Chicago O'Hare Intl

6:40 am - 8:51 pmATH Athens Eleftherios V.-ONT Ontario

23h 11m2 stops Munich Franz Josef Strauss Denver Intl

$1,149United Airlines

Sun, Oct 18 - Mon, Oct 26

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

17h 35m1 stop Chicago O'Hare Intl

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

33h 08m2 stops Newark Denver Intl

$1,330United Airlines

Tue, Oct 20 - Tue, Oct 27

11:13 am - 8:30 pmONT Ontario-ATH Athens Eleftherios V.

23h 17m2 stops Seattle/Tacoma Intl Istanbul

10:10 am - 10:17 amATH Athens Eleftherios V.-ONT Ontario

33h 07m2 stops Istanbul Seattle/Tacoma Intl

$1,562Multiple Airlines

Sun, Oct 18 - Sat, Oct 24

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

17h 53m1 stop Atlanta Hartsfield-Jackson

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

19h 45m1 stop Atlanta Hartsfield-Jackson

$1,682Multiple Airlines

Sun, Oct 18 - Mon, Oct 26

12:01 pm - 6:05 pmONT Ontario-ATH Athens Eleftherios V.

20h 04m2 stops San Francisco Warsaw Frederic Chopin

8:30 am - 10:35 amATH Athens Eleftherios V.-ONT Ontario

35h 05m3 stops Warsaw Frederic Chopin Miami Denver Intl

$1,706Multiple Airlines

Tue, Oct 20 - Sun, Oct 25

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

17h 35m1 stop Chicago O'Hare Intl

6:40 am - 8:51 pmATH Athens Eleftherios V.-ONT Ontario

23h 11m2 stops Munich Franz Josef Strauss Denver Intl

$1,716United Airlines

Sun, Oct 18 - Mon, Oct 26

8:35 pm - 6:10 pmONT Ontario-ATH Athens Eleftherios V.

35h 35m3 stops Las Vegas Harry Reid Intl Seattle/Tacoma Intl Frankfurt am Main

8:30 am - 10:35 amATH Athens Eleftherios V.-ONT Ontario

35h 05m3 stops Warsaw Frederic Chopin Miami Denver Intl

$1,783Multiple Airlines

Tue, Oct 20 - Sun, Oct 25

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

17h 53m1 stop Atlanta Hartsfield-Jackson

5:55 am - 4:23 pmATH Athens Eleftherios V.-ONT Ontario

19h 28m2 stops Amsterdam Schiphol Salt Lake City

$2,619Multiple Airlines

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?: KLM ($841) and United Airlines ($850) are the cheapest airlines to fly round-trip from Ontario to Athens according to KAYAK data over the last 5 days.

Find deals

High season	April
Cheapest flight	$379

The most popular month to fly with an average 40% increase in travelers.

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?
Only Economy Class is available on flights from Ontario to Athens.
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 $746 to $998, with an average of $796 over the past 12 months. Anything below $746 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 $468, which is 23% 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:

• Record go
• Centauro
• 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?
One-stop flights from Ontario to Athens most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 70% of one-stop connections
• Dallas/Fort Worth (DFW) - 23% of one-stop connections
• Chicago O'Hare Intl (ORD) - 7% 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 42% on flights from Ontario to Athens. Sunday is the cheapest departure day at $746 round-trip on average, while Monday is the most expensive at $1,279, a difference of $533.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
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 17m, compared with 19h 15m via Dallas/Fort Worth (DFW) and 19h 16m via Chicago O'Hare Intl (ORD).
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 Sunday departure and avoid flying on Monday. On this route, Sunday flights average $746, about $533 less than Monday fares (42% 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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Airports

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Direct Flights

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Return flight

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

Car rentals in Athens

Hotels in Athens

Vacations in Athens

ONT - ATH

$379 Find Cheap Flights from Ontario to Athens - Compare and Save

Everything you should know

Cheap Flights from Ontario to Athens (ONT-ATH)

Cheap flights from Ontario to Athens with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

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

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