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

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

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

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

What popular places can I visit in Ontario?

Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

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

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 Athens to Ontario looking right now?

One-way fares from Athens to Ontario are currently lower than usual. Average one-way flight prices are about $730, which is 24% below the typical average for this route.

What is the time difference between Athens and Ontario?

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

What car rental options are available at Ontario Airport (ONT)?

Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates averaging $60 for economy cars. Top options include: • Fox • Europcar • Thrifty • Alamo • Dollar

How much is a round-trip flight from Athens to Ontario?

Round-trip flights from Athens to Ontario typically range from $1,563 to $1,567. The lowest price found in the past 5 days was $1,090, on United Airlines.

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

United Airlines ($1,090) and Delta ($1,100) are the cheapest airlines to fly round-trip from Athens to Ontario according to KAYAK data over the last 5 days.

$663 CHEAP FLIGHTS from Athens to Ontario (ATH - ONT)

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

Cheapest round-trip

$1,090

Typical prices: $1,563-$1,567

United Airlines

Mon 4/23Fri 4/27

ATH - ONT • 2 stops

Cheapest one-way

$663

Typical prices: $879-$1,050

Multiple Airlines

Sat 12/8

ATH - ONT • 3 stops

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We hope you love your trip to Ontario!

Flight Deals

Cheap Flights from Athens to Ontario (ATH-ONT)

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 Athens to Ontario

Fri, Apr 23 - Tue, Apr 27

6:40 am - 8:20 pmATH Athens Eleftherios V.-ONT Ontario

23h 40m2 stops Frankfurt am Main Denver Intl

6:00 am - 8:10 amONT Ontario-ATH Athens Eleftherios V.

40h 10m2 stops Houston George Bush Intcntl Newark

$1,090United Airlines

Thu, Dec 3 - Thu, Dec 10

6:45 am - 8:38 pmATH Athens Eleftherios V.-ONT Ontario

23h 53m2 stops Frankfurt am Main San Francisco

5:45 am - 11:55 amONT Ontario-ATH Athens Eleftherios V.

20h 10m2 stops Houston George Bush Intcntl Montreal Pierre Elliott Trudeau Intl

$1,092United Airlines

Mon, Nov 23 - Fri, Dec 4

6:45 am - 5:56 pmATH Athens Eleftherios V.-ONT Ontario

21h 11m2 stops Frankfurt am Main San Francisco

11:20 am - 6:25 pmONT Ontario-ATH Athens Eleftherios V.

21h 05m2 stops San Francisco Munich Franz Josef Strauss

$1,093United Airlines

Wed, Nov 25 - Thu, Jan 28

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

23h 30m2 stops Frankfurt am Main San Francisco

6:37 pm - 1:30 amONT Ontario-ATH Athens Eleftherios V.

20h 53m2 stops San Francisco Munich Franz Josef Strauss

$1,095United Airlines

Sun, Nov 22 - Sun, Jan 31

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

23h 30m2 stops Frankfurt am Main San Francisco

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

19h 10m2 stops San Francisco Frankfurt am Main

$1,098United Airlines

Wed, Nov 18 - Sun, Nov 22

6:10 am - 5:16 pmATH Athens Eleftherios V.-ONT Ontario

21h 06m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

12:18 pm - 4:35 pmONT Ontario-ATH Athens Eleftherios V.

18h 17m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

$1,100Delta

Fri, Apr 23 - Tue, Apr 27

12:35 pm - 10:31 pmATH Athens Eleftherios V.-ONT Ontario

19h 56m1 stop Chicago O'Hare Intl

1:00 pm - 11:05 pmONT Ontario-ATH Athens Eleftherios V.

24h 05m2 stops Denver Intl Munich Franz Josef Strauss

$1,104United Airlines

Fri, Apr 23 - Tue, Apr 27

12:35 pm - 10:31 pmATH Athens Eleftherios V.-ONT Ontario

19h 56m1 stop Chicago O'Hare Intl

1:00 pm - 11:05 pmONT Ontario-ATH Athens Eleftherios V.

24h 05m2 stops Denver Intl Munich Franz Josef Strauss

$1,107United Airlines

Fri, Apr 23 - Tue, Apr 27

12:35 pm - 10:31 pmATH Athens Eleftherios V.-ONT Ontario

19h 56m1 stop Chicago O'Hare Intl

1:00 pm - 11:05 pmONT Ontario-ATH Athens Eleftherios V.

24h 05m2 stops Denver Intl Munich Franz Josef Strauss

$1,112United Airlines

Mon, Dec 21 - Mon, Jan 25

6:45 am - 10:53 pmATH Athens Eleftherios V.-ONT Ontario

26h 08m2 stops Frankfurt am Main San Francisco

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

19h 10m2 stops San Francisco Frankfurt am Main

$1,134United Airlines

Recent last minute flight deals from Athens to Ontario

Fri, Nov 6 - Fri, Jan 8

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

26h 33m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

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

24h 30m2 stops Salt Lake City Amsterdam Schiphol

$1,283Delta

Fri, Nov 6 - Tue, Jan 5

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

26h 33m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

1:07 pm - 1:20 amONT Ontario-ATH Athens Eleftherios V.

26h 13m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

$1,366Delta

Fri, Nov 6 - Thu, Jan 7

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

26h 33m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

7:00 am - 4:35 pmONT Ontario-ATH Athens Eleftherios V.

23h 35m2 stops Seattle/Tacoma Intl Amsterdam Schiphol

$1,384Delta

Fri, Nov 6 - Thu, Dec 24

6:10 am - 5:12 pmATH Athens Eleftherios V.-ONT Ontario

21h 02m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

7:06 am - 12:40 pmONT Ontario-ATH Athens Eleftherios V.

19h 34m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

$1,399Delta

Sat, Nov 7 - Tue, Jan 5

6:10 am - 5:12 pmATH Athens Eleftherios V.-ONT Ontario

21h 02m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

7:05 am - 4:30 pmONT Ontario-ATH Athens Eleftherios V.

23h 25m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

$1,419Delta

Sat, Nov 7 - Sun, Nov 15

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

24h 11m2 stops Munich Franz Josef Strauss Denver Intl

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

18h 05m2 stops Houston George Bush Intcntl Newark

$1,423United Airlines

Fri, Nov 6 - Tue, Jan 5

6:10 am - 5:12 pmATH Athens Eleftherios V.-ONT Ontario

21h 02m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

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

24h 30m2 stops Salt Lake City Amsterdam Schiphol

$1,467Delta

Fri, Nov 6 - Sun, Nov 15

6:10 am - 4:23 pmATH Athens Eleftherios V.-ONT Ontario

20h 13m2 stops Amsterdam Schiphol Salt Lake City

6:00 am - 9:35 amONT Ontario-ATH Athens Eleftherios V.

17h 35m2 stops Salt Lake City New York John F Kennedy Intl

$1,544KLM

Fri, Nov 6 - Tue, Jan 5

1:20 pm - 1:31 pmATH Athens Eleftherios V.-ONT Ontario

34h 11m2 stops Doha Hamad Intl Dallas/Fort Worth

2:22 pm - 11:10 amONT Ontario-ATH Athens Eleftherios V.

34h 48m2 stops Dallas/Fort Worth Doha Hamad Intl

$1,940Qatar Airways

Fri, Nov 6 - Tue, Jan 5

1:20 pm - 6:17 pmATH Athens Eleftherios V.-ONT Ontario

38h 57m2 stops Doha Hamad Intl Seattle/Tacoma Intl

2:22 pm - 11:10 amONT Ontario-ATH Athens Eleftherios V.

34h 48m2 stops Dallas/Fort Worth Doha Hamad Intl

$2,064Qatar Airways

Booking Insights

Price, demand and travel trends for Athens to Ontario flights

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

Prices

Airlines

How much is a round-trip flight from Athens to Ontario? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Athens to Ontario departing in april.

Find deals

Cheapest flight	$663

One-way flight from Athens to Ontario

When to book flights from Athens to Ontario

Are your dates flexible? Find out the best times to travel from Athens to Ontario 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 Athens to Ontario?
Two cabin classes are available on flights from Athens to Ontario:

• Economy Class
• Premium Economy Class
Do I need a passport to fly from Athens to Ontario?
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 Athens to Ontario looking right now?
One-way fares from Athens to Ontario are currently lower than usual. Average one-way flight prices are about $730, which is 24% below the typical average for this route.
What car rental options are available at Ontario Airport (ONT)?
Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates averaging $60 for economy cars. Top options include:

• Fox
• Europcar
• Thrifty
• Alamo
• Dollar
Which airports can I use when flying from Athens to Ontario?
Flights from Athens to Ontario usually depart from Athens Eleftherios V. (ATH) and arrive at Ontario (ONT).
What is the time difference between Athens and Ontario?
Ontario is 10 hours behind Athens (Pacific Time vs Eastern European Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Ontario?
Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

• Ontario Airport Inn
• Azure Hotel & Suites, Trademark Collection by Wyndham
• Holiday Inn Ontario Airport By IHG

More options for your flight from Athens to Ontario

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ATH - ONT

$663 Find Cheap Flights from Athens to Ontario - Compare and Save

Everything you should know

Cheap Flights from Athens to Ontario (ATH-ONT)

Recent round-trip flight deals from Athens to Ontario

Recent one-way flight deals from Athens to Ontario

Recent last minute flight deals from Athens to Ontario

Price, demand and travel trends for Athens to Ontario flights

How much is a round-trip flight from Athens to Ontario?

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

Key details for Athens to Ontario flights

Cheapest flight

When to book flights from Athens to Ontario

Your Athens to Ontario flight questions, answered

Your guide to booking Athens to Ontario flights

More options for your flight from Athens to Ontario

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

Information on your arrival and departure airports

Cabin class types available on flights from Athens to Ontario

Find direct flights to and from Athens and Ontario

Flights from domestic origins to Ontario

Flights to other popular destinations

Find deals for your return flight