$780 Cheap Flights from Washington (IAD) to Argostolion (EFL)

View $780 flight on Sat, May 16, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Argostolion (EFL-Kefalonia Island Intl.)

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Cheap Flights from Washington to Argostolion (IAD-EFL)

Prices were available within the past 7 days and start at $780 for one-way flights and $1,109 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, May 10 - Mon, May 25
IAD
Washington
EFL
Kefalonia
$1,109 Roundtrip, found 1 day ago
$1,109
Roundtrip
found 1 day ago
Select United flight, departing Sun, May 10 from Washington to Kefalonia, returning Mon, May 25, priced at $1,109 found 1 day ago
Lufthansa
Sat, May 9 - Mon, May 25
IAD
Washington
EFL
Kefalonia
$1,145 Roundtrip, found 1 day ago
$1,145
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Sat, May 9 from Washington to Kefalonia, returning Mon, May 25, priced at $1,145 found 1 day ago
British Airways
Fri, May 1 - Tue, May 19
IAD
Washington
EFL
Kefalonia
$1,191 Roundtrip, found 1 day ago
$1,191
Roundtrip
found 1 day ago
Select British Airways flight, departing Fri, May 1 from Washington to Kefalonia, returning Tue, May 19, priced at $1,191 found 1 day ago
British Airways
Sat, May 16 - Sat, May 23
IAD
Washington
EFL
Kefalonia
$1,223 Roundtrip, found 1 day ago
$1,223
Roundtrip
found 1 day ago
Select British Airways flight, departing Sat, May 16 from Washington to Kefalonia, returning Sat, May 23, priced at $1,223 found 1 day ago
British Airways
Sat, May 16 - Sat, May 23
IAD
Washington
EFL
Kefalonia
$1,233 Roundtrip, found 1 day ago
$1,233
Roundtrip
found 1 day ago
Select British Airways flight, departing Sat, May 16 from Washington to Kefalonia, returning Sat, May 23, priced at $1,233 found 1 day ago
British Airways
Fri, May 1 - Sat, May 16
IAD
Washington
EFL
Kefalonia
$1,251 Roundtrip, found 1 day ago
$1,251
Roundtrip
found 1 day ago
Select British Airways flight, departing Fri, May 1 from Washington to Kefalonia, returning Sat, May 16, priced at $1,251 found 1 day ago
United
Sat, May 16 - Sat, May 23
IAD
Washington
EFL
Kefalonia
$1,281 Roundtrip, found 1 day ago
$1,281
Roundtrip
found 1 day ago
Select United flight, departing Sat, May 16 from Washington to Kefalonia, returning Sat, May 23, priced at $1,281 found 1 day ago
Air Canada
Mon, May 4 - Mon, May 18
IAD
Washington
EFL
Kefalonia
$1,325 Roundtrip, found 1 day ago
$1,325
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, May 4 from Washington to Kefalonia, returning Mon, May 18, priced at $1,325 found 1 day ago
British Airways
Sat, May 16 - Sat, May 23
IAD
Washington
EFL
Kefalonia
$1,337 Roundtrip, found 1 day ago
$1,337
Roundtrip
found 1 day ago
Select British Airways flight, departing Sat, May 16 from Washington to Kefalonia, returning Sat, May 23, priced at $1,337 found 1 day ago
Finnair
Sat, May 16 - Sat, May 23
IAD
Washington
EFL
Kefalonia
$1,428 Roundtrip, found 1 day ago
$1,428
Roundtrip
found 1 day ago
Select Finnair flight, departing Sat, May 16 from Washington to Kefalonia, returning Sat, May 23, priced at $1,428 found 1 day ago
Flights from Washington (IAD) to Argostolion (EFL)
Origin airport
Washington Dulles Intl.
Destination airport
Kefalonia Island Intl.
Airlines serving
British Airways, Lufthansa
Roundtrip price
$1,108
Distance
4997 mi

Washington to Argostolion Flights

The cheapest times to fly from Washington to Argostolion

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Argostolion are during the month of May. You can find some of the cheapest flights from Washington to Argostolion with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Argostolion

Sunday is one of the best days to book for cheap flights from Washington to Argostolion: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Argostolion

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Argostolion in 2026. You can also book with separate airlines for your outbound and return journeys, from $780 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Argostolion flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Argostolion airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Kefalonia Island Intl. Airport (EFL) cost?
Grab a cheap one-way flight from $780 or cheap return flight from $1,109 from Washington Dulles Intl. Airport (IAD) to Kefalonia Island Intl. Airport (EFL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Kefalonia Island Intl. Airport (EFL)?
May is the least expensive month to fly from IAD to EFL. Planning your trip for the off-season is often the key to landing a great deal.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Kefalonia Island Intl. Airport (EFL)?
To find the cheapest airline flying from IAD to EFL, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Kefalonia Island Intl. Airport (EFL)?
Nonstop flights from Washington Dulles Intl. Airport (IAD) to Kefalonia Island Intl. Airport (EFL) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to EFL?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can change based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Kefalonia Island Intl. Airport (EFL)?
To avoid possible delays on the Washington Dulles Intl. Airport (IAD) to Kefalonia Island Intl. Airport (EFL) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Kefalonia Island Intl. Airport (EFL) last-minute?
Booking your plane ticket from IAD to EFL shortly before your getaway is generally more expensive. However, if there's some wiggle room with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book an IAD to EFL flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAD to EFL flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place will take the hassle out of planning your trip. Simply pick your flights and select from our extensive range of stays, then personalize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Kefalonia Island Intl. Airport (EFL)?
It's usually possible to reschedule or cancel your IAD to EFL flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.