$41 Cheap Flights from Kos (KGS) to Athens (ATH)

View $41 flight on Thu, Apr 2, 2026Opens in a new window

Popular airlines from Kos (KGS-Kos Island Intl.) to Athens Intl. Airport (ATH)

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Cheap Flights from Kos to Athens (KGS-ATH)

Prices were available within the past 7 days and start at $41 for one-way flights and $96 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

SKY express
Sat, Apr 25 - Mon, Apr 27
KGS
Kos
ATH
Athens
$96 Roundtrip, found 5 days ago
$96
Roundtrip
found 5 days ago
Select SKY express flight, departing Sat, Apr 25 from Kos to Athens, returning Mon, Apr 27, priced at $96 found 5 days ago
SKY express
Sat, May 9 - Sun, May 10
KGS
Kos
ATH
Athens
$102 Roundtrip, just found
$102
Roundtrip
just found
Select SKY express flight, departing Sat, May 9 from Kos to Athens, returning Sun, May 10, priced at $102 just found
SKY express
Sat, May 16 - Sat, May 23
KGS
Kos
ATH
Athens
$102 Roundtrip, found 1 day ago
$102
Roundtrip
found 1 day ago
Select SKY express flight, departing Sat, May 16 from Kos to Athens, returning Sat, May 23, priced at $102 found 1 day ago
SKY express
Sat, May 23 - Wed, Jun 3
KGS
Kos
ATH
Athens
$111 Roundtrip, found 3 days ago
$111
Roundtrip
found 3 days ago
Select SKY express flight, departing Sat, May 23 from Kos to Athens, returning Wed, Jun 3, priced at $111 found 3 days ago
SKY express
Fri, Apr 10 - Fri, Apr 17
KGS
Kos
ATH
Athens
$118 Roundtrip, found 3 days ago
$118
Roundtrip
found 3 days ago
Select SKY express flight, departing Fri, Apr 10 from Kos to Athens, returning Fri, Apr 17, priced at $118 found 3 days ago
SKY express
Sat, Apr 11 - Mon, Apr 13
KGS
Kos
ATH
Athens
$119 Roundtrip, found 5 days ago
$119
Roundtrip
found 5 days ago
Select SKY express flight, departing Sat, Apr 11 from Kos to Athens, returning Mon, Apr 13, priced at $119 found 5 days ago
SKY express
Sat, May 16 - Sat, May 23
KGS
Kos
ATH
Athens
$120 Roundtrip, found 1 day ago
$120
Roundtrip
found 1 day ago
Select SKY express flight, departing Sat, May 16 from Kos to Athens, returning Sat, May 23, priced at $120 found 1 day ago
SKY express
Mon, May 11 - Mon, May 18
KGS
Kos
ATH
Athens
$123 Roundtrip, found 3 days ago
$123
Roundtrip
found 3 days ago
Select SKY express flight, departing Mon, May 11 from Kos to Athens, returning Mon, May 18, priced at $123 found 3 days ago
Aegean
Sat, May 23 - Wed, May 27
KGS
Kos
ATH
Athens
$141 Roundtrip, found 1 day ago
$141
Roundtrip
found 1 day ago
Select Aegean flight, departing Sat, May 23 from Kos to Athens, returning Wed, May 27, priced at $141 found 1 day ago
Involatus
Sat, May 9 - Sun, May 10
KGS
Kos
ATH
Athens
$262 Roundtrip, just found
$262
Roundtrip
just found
Select Involatus flight, departing Sat, May 9 from Kos to Athens, returning Sun, May 10, priced at $262 just found

Find the cheapest month to fly from Kos (KGS) to Athens (ATH)

January is typically the cheapest month to fly

From $75 - $178 per traveler.

Frequently asked questions

How much does a flight from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos) cost?
You can find cheap one-way flights from $41 and cheap return flights from $96 Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos) with Expedia. One-way flights typically cost between $53 and $251, and return flights often range between $126 and $352. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
The cheapest month to fly from KGS to ATH is April when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
2 airlines operate nonstop service from KGS to ATH:

  • Sky Express operates around 20 direct flights from KGS to ATH every week
  • Aegean operates around 8 direct flights from KGS to ATH every week

What is the cheapest airline that flies from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
Sky Express is one of the cheapest airlines offering nonstop flights from Kos Island Intl. (KGS) to Eleftherios Venizelos (ATH), with round-trip tickets starting from around $127. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
To find a cheap flight from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
The best airline to fly with from Kos (KGS) to Athens (ATH) will differ from traveler to traveler. If you like to fly early, Sky Express offers early morning flights. If price is the most important factor, Olympic typically offers the lowest fares. Olympic offers the most daily flights from KGS to ATH, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
There are approximately 3 nonstop flights per day from Kos Island Intl. (KGS) to Eleftherios Venizelos (ATH). For more options, look at flights that include layovers.
What is the earliest flight from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
The earliest flight from Kos Island International Airport (KGS) to Eleftherios Venizelos Airport (ATH) typically departs at around 6:00 AM. This seasonal service is operated by Aegean Airlines, making it a great choice for travelers eager to explore Athens early in the day. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
The most popular departure times for flights from Kos Island International Airport (KGS) to Eleftherios Venizelos Airport (ATH) are in the evening, from 6pm to 9pm. About 30% of passengers prefer this time window. Major carriers, including Aegean Airlines and Olympic Air, offer flights during this window. This timing is favored as it allows travelers to enjoy their day in Kos before heading to Athens.
How long does it take to fly from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
Direct flights from KGS to ATH usually take about 1 hour, traveling roughly 190 miles. If you opt for a connecting flight, expect to add around 6 hours to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
Business class seats are offered on the KGS to ATH route with Aegean.
How much is a business class flight from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
A non-stop, one-way business class flight from Kos (KGS) to Athens (ATH) is usually around $261 - $297 per adult in economy/coach class. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos) flight with Expedia?
It's easy to earn miles on a Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Athens from Kos Island Intl. (KGS)?
If you're planning to travel to Athens from Kos Island Intl. (KGS), you can fly into Eleftherios Venizelos (ATH) Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos) at the last minute?
Typically, booking a last minute flight from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos) flight and hotel package?
Securing a Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos) Athens Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos)?
If you booked your Kos (KGS-Kos Island Intl.) to Athens (ATH-Eleftherios Venizelos) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Kos Island Intl.
Destination airport
Eleftherios Venizelos
Airlines serving
Aegean, Involatus, SKY express
Roundtrip price
$96
Distance
189 mi
Average flight time
1 hour 5 mins

Book with confidence

Kos to Athens Flights

The cheapest times to fly from Kos to Athens

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 Kos to Athens are during the month of April. You can find some of the cheapest flights from Kos to Athens with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Kos to Athens

Sunday is one of the best days to book for cheap flights from Kos to Athens: 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 Kos to Athens

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 Kos to Athens in 2026. You can also book with separate airlines for your outbound and return journeys, from $41 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 Kos to Athens 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 Kos to Athens 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.

 

Kos to Athens Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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