$46 Cheap Flights from Athens (ATH) to Kos (KGS)

View $46 flight on Thu, Jan 15, 2026Opens in a new window

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

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Cheap Flights from Athens to Kos (ATH-KGS)

Prices were available within the past 7 days and start at $46 for one-way flights and $87 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aegean
Thu, Jan 15 - Wed, Jan 21
ATH
Athens
KGS
Kos
$87 Roundtrip, found 14 hours ago
$87
Roundtrip
found 14 hours ago
Select Aegean flight, departing Thu, Jan 15 from Athens to Kos, returning Wed, Jan 21, priced at $87 found 14 hours ago
SKY express
Sat, Sep 6 - Wed, Sep 24
ATH
Athens
KGS
Kos
$92 Roundtrip, found 1 hour ago
$92
Roundtrip
found 1 hour ago
Select SKY express flight, departing Sat, Sep 6 from Athens to Kos, returning Wed, Sep 24, priced at $92 found 1 hour ago
SKY express
Thu, Sep 4 - Wed, Sep 10
ATH
Athens
KGS
Kos
$94 Roundtrip, found 1 day ago
$94
Roundtrip
found 1 day ago
Select SKY express flight, departing Thu, Sep 4 from Athens to Kos, returning Wed, Sep 10, priced at $94 found 1 day ago
Aegean
Thu, Jan 15 - Wed, Jan 21
ATH
Athens
KGS
Kos
$98 Roundtrip, found 14 hours ago
$98
Roundtrip
found 14 hours ago
Select Aegean flight, departing Thu, Jan 15 from Athens to Kos, returning Wed, Jan 21, priced at $98 found 14 hours ago
Aegean
Thu, Jan 15 - Wed, Jan 21
ATH
Athens
KGS
Kos
$99 Roundtrip, found 14 hours ago
$99
Roundtrip
found 14 hours ago
Select Aegean flight, departing Thu, Jan 15 from Athens to Kos, returning Wed, Jan 21, priced at $99 found 14 hours ago
SKY express
Thu, Jan 15 - Wed, Jan 21
ATH
Athens
KGS
Kos
$104 Roundtrip, found 14 hours ago
$104
Roundtrip
found 14 hours ago
Select SKY express flight, departing Thu, Jan 15 from Athens to Kos, returning Wed, Jan 21, priced at $104 found 14 hours ago
Aegean
Mon, Sep 8 - Thu, Sep 11
ATH
Athens
KGS
Kos
$105 Roundtrip, found 1 day ago
$105
Roundtrip
found 1 day ago
Select Aegean flight, departing Mon, Sep 8 from Athens to Kos, returning Thu, Sep 11, priced at $105 found 1 day ago
Aegean
Thu, Jan 15 - Wed, Jan 21
ATH
Athens
KGS
Kos
$110 Roundtrip, found 14 hours ago
$110
Roundtrip
found 14 hours ago
Select Aegean flight, departing Thu, Jan 15 from Athens to Kos, returning Wed, Jan 21, priced at $110 found 14 hours ago
SKY express
Thu, Jan 15 - Wed, Jan 21
ATH
Athens
KGS
Kos
$113 Roundtrip, found 14 hours ago
$113
Roundtrip
found 14 hours ago
Select SKY express flight, departing Thu, Jan 15 from Athens to Kos, returning Wed, Jan 21, priced at $113 found 14 hours ago
Hahn Air Systems
Sun, Aug 31 - Wed, Sep 17
ATH
Athens
KGS
Kos
$191 Roundtrip, found 7 hours ago
$191
Roundtrip
found 7 hours ago
Select Hahn Air Systems flight, departing Sun, Aug 31 from Athens to Kos, returning Wed, Sep 17, priced at $191 found 7 hours ago

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

January is typically the cheapest month to fly

From $75 - $183 per traveler.

Graph displaying average flight prices per month

Alternative airports near Kos

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Leros Island LRS. Average driving time to city center is 8 hours 52 minutes. Flights from $470
LRS
Leros Island
Average driving time to city center8 h 52 min
Flights from $470
Select flight to Kalymnos Island National JKL. Average driving time to city center is 2 hours 50 minutes. Flights from $403
JKL
Kalymnos Island National
Average driving time to city center2 h 50 min
Flights from $403
0
Flights from Athens (ATH) to Kos (KGS)
Origin airport
Eleftherios Venizelos
Destination airport
Kos Island Intl.
Airlines serving
Aegean, Hahn Air Systems, SKY express
Roundtrip price
$87
Distance
189 mi

Athens to Kos Flights

The cheapest times to fly from Athens to Kos

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

 

The best time to book a flight from Athens to Kos

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

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 Athens to Kos in 2025. You can also book with separate airlines for your outbound and return journeys, from $46 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 Athens to Kos 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 Athens to Kos 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 Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS) cost?
Find cheap return fares from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS) starting at $103. Grab your seat and get ready for takeoff. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Sky Express flight leaving ATH on July 28 2025 and touching down at KGS. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from ATH to KGS?
The cheapest flights from ATH to KGS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS)?
Jump on a direct flight with Aegean Airlines and journey straight from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS).
What is the cheapest airline that flies from ATH to KGS?
With tickets starting at $52 for a one-way journey from ATH to KGS, Sky Express is currently the cheapest airline operating this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from ATH on October 8 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS)?
With, on average, 5 nonstop flights that operate from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS) daily, you'll be off on your next adventure in no time.
What are the most popular departure times for flights from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS)?
More people fly between ATH and KGS at 11 AM than at any other time of day. Rather go when it's quieter? Travel outside of rush hours and it's possible you'll save on your ticket as well.
What day of the week has the most flights from ATH to KGS?
If you fly on a Friday, you'll get the greatest range of options for flights from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS).
What is the earliest flight from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS)?
The earliest flight leaving Eleftherios Venizelos Airport (ATH) is at around 7:00AM UTC+2. Board this flight and you'll touch down at Kos Island Intl. Airport (KGS) at approximately 8:05AM UTC+2. The overall travel time is 1h 5m.
How long does it take to fly from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS)?
The average flight duration from ATH to KGS is 1 hour and 2 minutes, covering a distance of 190 mi.
What is the best time to fly from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS)?
To arrive at Kos Island Intl. Airport (KGS) on time, pick a flight that leaves from Eleftherios Venizelos Airport (ATH) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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.
What airports do you fly into for Kos from Eleftherios Venizelos Airport (ATH)?
A direct flight from Eleftherios Venizelos Airport (ATH) will take you straight to one of these airports in Kos:

  • Kos Island Intl. Airport (KGS)
  • Diagoras Airport (RHO)
  • Samos Intl. Airport (SMI)
  • Leros Island Airport (LRS)
  • Astypalaia Island National Airport (JTY)

Is it cheaper to buy a plane ticket from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS) last-minute?
Booking your flight from ATH to KGS shortly before your getaway is typically more expensive. However, if you're flexible with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book an ATH to KGS flight and hotel package?
You can save money by booking an ATH to KGS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've selected your ideal flights and accommodations, consider other add-ons like car rentals, tours and activities.
Can I cancel or change the date of my flight from Eleftherios Venizelos Airport (ATH) to Kos Island Intl. Airport (KGS)?
Typically, it's possible to cancel or reschedule your ATH to KGS flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

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