$911 Cheap Flights from St. Louis (STL) to Argostolion (EFL)

View $911 flight on Wed, Jun 24, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Argostolion (EFL-Kefalonia Island Intl.)

Cheap Flights from St. Louis to Argostolion (STL-EFL)

Prices were available within the past 7 days and start at $911 for one-way flights and $1,626 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Jun 24 - Thu, Jul 2
STL
St. Louis
EFL
Kefalonia
$1,626 Roundtrip, found 13 hours ago
$1,626
Roundtrip
found 13 hours ago
Select Air Canada flight, departing Wed, Jun 24 from St. Louis to Kefalonia, returning Thu, Jul 2, priced at $1,626 found 13 hours ago
Air Canada
Wed, Jun 24 - Thu, Jul 2
STL
St. Louis
EFL
Kefalonia
$1,631 Roundtrip, found 13 hours ago
$1,631
Roundtrip
found 13 hours ago
Select Air Canada flight, departing Wed, Jun 24 from St. Louis to Kefalonia, returning Thu, Jul 2, priced at $1,631 found 13 hours ago
Air Canada
Wed, Jun 24 - Thu, Jul 2
STL
St. Louis
EFL
Kefalonia
$1,687 Roundtrip, found 13 hours ago
$1,687
Roundtrip
found 13 hours ago
Select Air Canada flight, departing Wed, Jun 24 from St. Louis to Kefalonia, returning Thu, Jul 2, priced at $1,687 found 13 hours ago
United
Wed, Jun 24 - Thu, Jul 2
STL
St. Louis
EFL
Kefalonia
$1,696 Roundtrip, found 13 hours ago
$1,696
Roundtrip
found 13 hours ago
Select United flight, departing Wed, Jun 24 from St. Louis to Kefalonia, returning Thu, Jul 2, priced at $1,696 found 13 hours ago
Air Canada
Wed, Jun 24 - Thu, Jul 2
STL
St. Louis
EFL
Kefalonia
$1,707 Roundtrip, found 13 hours ago
$1,707
Roundtrip
found 13 hours ago
Select Air Canada flight, departing Wed, Jun 24 from St. Louis to Kefalonia, returning Thu, Jul 2, priced at $1,707 found 13 hours ago
Air Canada
Wed, Jun 24 - Thu, Jul 2
STL
St. Louis
EFL
Kefalonia
$1,712 Roundtrip, found 13 hours ago
$1,712
Roundtrip
found 13 hours ago
Select Air Canada flight, departing Wed, Jun 24 from St. Louis to Kefalonia, returning Thu, Jul 2, priced at $1,712 found 13 hours ago
American Airlines
Wed, Jun 24 - Thu, Jul 2
STL
St. Louis
EFL
Kefalonia
$1,735 Roundtrip, found 13 hours ago
$1,735
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Wed, Jun 24 from St. Louis to Kefalonia, returning Thu, Jul 2, priced at $1,735 found 13 hours ago
Austrian Airlines
Wed, Jun 24 - Thu, Jul 2
STL
St. Louis
EFL
Kefalonia
$1,755 Roundtrip, found 13 hours ago
$1,755
Roundtrip
found 13 hours ago
Select Austrian Airlines flight, departing Wed, Jun 24 from St. Louis to Kefalonia, returning Thu, Jul 2, priced at $1,755 found 13 hours ago
Air Canada
Wed, Jun 24 - Thu, Jul 2
STL
St. Louis
EFL
Kefalonia
$1,769 Roundtrip, found 13 hours ago
$1,769
Roundtrip
found 13 hours ago
Select Air Canada flight, departing Wed, Jun 24 from St. Louis to Kefalonia, returning Thu, Jul 2, priced at $1,769 found 13 hours ago
Lufthansa
Wed, Jun 24 - Thu, Jul 2
STL
St. Louis
EFL
Kefalonia
$1,774 Roundtrip, found 13 hours ago
$1,774
Roundtrip
found 13 hours ago
Select Lufthansa flight, departing Wed, Jun 24 from St. Louis to Kefalonia, returning Thu, Jul 2, priced at $1,774 found 13 hours ago
Flights from St. Louis (STL) to Argostolion (EFL)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Kefalonia Island Intl.
Roundtrip price
$1,625
Distance
5551 mi

St. Louis to Argostolion Flights

The cheapest times to fly from St. Louis 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 St. Louis to Argostolion are during the month of June. You can find some of the cheapest flights from St. Louis to Argostolion with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Argostolion

Sunday is one of the best days to book for cheap flights from St. Louis 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 St. Louis 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 St. Louis to Argostolion in 2025. You can also book with separate airlines for your outbound and return journeys, from $911 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 St. Louis 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 St. Louis 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 Lambert-St. Louis Intl. Airport (STL) to Kefalonia Island Intl. Airport (EFL) cost?
Get a cheap one-way flight from $911 or cheap return flight from $1,626 from Lambert-St. Louis Intl. Airport (STL) to Kefalonia Island Intl. Airport (EFL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Kefalonia Island Intl. Airport (EFL)?
The cheapest month to fly from STL to EFL is June, when demand is low. Off-peak months are usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Kefalonia Island Intl. Airport (EFL)?
To find the cheapest airline flying from STL to EFL, use Expedia's filter tool. Tailor 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 discover the cheapest flight right away.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Kefalonia Island Intl. Airport (EFL)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) 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 details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to EFL?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on a number of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Kefalonia Island Intl. Airport (EFL)?
Select a flight from Lambert-St. Louis Intl. Airport (STL) to Kefalonia Island Intl. Airport (EFL) that leaves before 3 PM to reduce the risk of cancellations. Departures after this hour are on average 22% more likely to be canceled.**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 Lambert-St. Louis Intl. Airport (STL) to Kefalonia Island Intl. Airport (EFL) last-minute?
Last-minute bookings from STL to EFL are usually more expensive. To lock in the best rates, start searching for flights as early as possible. That said, if your travel plans are flexible, it's possible to find a cheap ticket right before you leave.
Is it cheaper to book a STL to EFL flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to EFL flight and hotel package with Expedia could result in significant savings. What's more, having everything in one convenient place will take the hassle out of planning your trip. Just secure your flights and select from our extensive range of hotels, then tailor your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Kefalonia Island Intl. Airport (EFL)?
Generally, it's possible to reschedule or cancel your STL to EFL flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.