Cheap Flights from Kos (KGS) to Athens International (ATH)

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Travellers and cabin class, 1 Adult, Economy

Compare Kos to Athens International flight deals

Find the cheapest month or even day of the year to fly to Athens International

Book the best Athens International fare with no extra fees

Flight deals Cheapest month Find the best route Route info FAQs Tips and advice

Flight deals from Kos to Athens International

Looking for a cheap last-minute deal or the best return flight from Kos Airport to Athens International Airport? If you want to travel next month, return fares start from £65. Find the lowest prices on one-way and return tickets right here.

Athens.£27 per passenger.Departing Mon, 1 Feb.One-way flight with Aegean Airlines.Outbound direct flight with Aegean Airlines departs from Kos on Mon, 1 Feb, arriving in Athens International.Price includes taxes and charges.From £27, select.

Athens.£29 per passenger.Departing Wed, 13 Jan.One-way flight with SKY express.Outbound direct flight with SKY express departs from Kos on Wed, 13 Jan, arriving in Athens International.Price includes taxes and charges.From £29, select.

Athens.£29 per passenger.Departing Wed, 9 Dec.One-way flight with SKY express.Outbound direct flight with SKY express departs from Kos on Wed, 9 Dec, arriving in Athens International.Price includes taxes and charges.From £29, select.

Athens.£31 per passenger.Departing Tue, 13 Oct.One-way flight with SKY express.Outbound direct flight with SKY express departs from Kos on Tue, 13 Oct, arriving in Athens International.Price includes taxes and charges.From £31, select.

Athens.£32 per passenger.Departing Fri, 4 Jun.One-way flight with SKY express.Outbound direct flight with SKY express departs from Kos on Fri, 4 Jun, arriving in Athens International.Price includes taxes and charges.From £32, select.

Athens.£34 per passenger.Departing Sun, 8 Nov.One-way flight with SKY express.Outbound direct flight with SKY express departs from Kos on Sun, 8 Nov, arriving in Athens International.Price includes taxes and charges.From £34, select.

Athens.£35 per passenger.Departing Wed, 4 Aug.One-way flight with SKY express.Outbound direct flight with SKY express departs from Kos on Wed, 4 Aug, arriving in Athens International.Price includes taxes and charges.From £35, select.

Athens.£35 per passenger.Departing Fri, 7 May.One-way flight with SKY express.Outbound direct flight with SKY express departs from Kos on Fri, 7 May, arriving in Athens International.Price includes taxes and charges.From £35, select.

Athens.£35 per passenger.Departing Sat, 3 Apr.One-way flight with SKY express.Outbound direct flight with SKY express departs from Kos on Sat, 3 Apr, arriving in Athens International.Price includes taxes and charges.From £35, select.

Athens.£35 per passenger.Departing Sun, 7 Mar.One-way flight with SKY express.Outbound direct flight with SKY express departs from Kos on Sun, 7 Mar, arriving in Athens International.Price includes taxes and charges.From £35, select.

Athens.£35 per passenger.Departing Thu, 1 Jul.One-way flight with SKY express.Outbound direct flight with SKY express departs from Kos on Thu, 1 Jul, arriving in Athens International.Price includes taxes and charges.From £35, select.

Athens.£41 per passenger.Departing Wed, 23 Sep.One-way flight with SKY express.Outbound direct flight with SKY express departs from Kos on Wed, 23 Sep, arriving in Athens International.Price includes taxes and charges.From £41, select.

Athens.£55 per passenger.Departing Sat, 4 Sep.One-way flight with Aegean Airlines.Outbound direct flight with Aegean Airlines departs from Kos on Sat, 4 Sep, arriving in Athens International.Price includes taxes and charges.From £55, select.

Find the cheapest month to fly from Kos to Athens International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Kos to Athens International flights are currently cheapest in February.

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Direct flights from Kos to Athens International

Kos to Athens International: Alternative routes

Compare routes from Kos to Athens below. You may find an airport to fly into that's cheaper, faster, or easier than Athens International.

Athens International

13 miles from central Athens

ClosestCheapest

from £27

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Kos to Athens: Flight information

The things to know before you go.

Cheapest flight found	£27
Cheapest month to fly	February
Average flight time	1 hr, 2 mins
Most popular airline	SKY express
Average flights per week	137

Finding cheap flights from Kos to Athens International: Frequently asked questions

How much are return flights from Kos to Athens International?

The best price we found for a return flight from Kos to Athens International is £61. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Kos to Athens International?

1 hour and 2 minutes is the average flight time from Kos to Athens International.

Which airlines fly direct from Kos to Athens International?

SKY express, Aegean Airlines and Olympic Air fly direct from Kos to Athens International.

How many flights are there a week from Kos to Athens International?

As of September 2026, there are 137 flights per week flying from Kos to Athens International.

When is the cheapest time to fly from Kos to Athens International?

The cheapest month to fly from Kos to Athens International is usually January.

Which upcoming date is cheapest to fly from Kos Airport to Athens International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Kos Airport to Athens International Airport on Wednesday, 13 January 2027.

Can I get a direct flight from Kos Airport to Athens International Airport?

Yes – the average flight time is 1 hour and 2 minutes.

How can I find the best flight deal to Athens International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Athens International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Athens?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Athens is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Kos Airport to Athens International with?

Currently, SKY express offers the cheapest flight tickets to Athens International.

Flying from Kos Airport (KGS) to Athens International Airport (ATH): what you need to know

Book a direct flight from Kos Airport to Athens International Airport and you'll be travelling for an average of 1 hour 5 minutes.
Kos and Athens are both in the UTC+2 timezone. That means there's no time difference to consider.
Flights from KGS to ATH start at 05:00 — the earliest with Aegean Airlines. The last service of the day is at 23:15 with Sky Express. In total, there are 46 weekly Kos Airport to Athens International Airport flights.
Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Make sure you're at the airport on time to catch your KGS to ATH flight.
Be prepared for longer queues in popular months such as July. Arriving up to four hours in advance for international flights and two hours for a domestic departure is a smart move.
Aegean Airlines has direct flights from Kos Airport to Athens International Airport. Book with this popular carrier, then get ready to see the sights in Athens — and maybe even more of Greece if time allows.
The airline that passengers book most often on this route is Aegean Airlines.
With an impressive 87.25% of services arriving as scheduled, Aegean Airlines is the most punctual carrier for KGS to ATH flights.
We make it a piece of cake to book a flight with a stopover. To see your options for tickets from Kos Airport to Athens International Airport, uncheck 'Direct flights only.' Then, choose a flight offering a stop long enough to explore the city of your choice. Stopovers between KGS and ATH include:
- Thessaloniki Airport
- Rhodes Airport
- Kalymnos Airport

Handy information about Kos Airport (KGS)

Of all flights departing from Kos Airport, 79% land on schedule at their destination.
Kos Airport is around 26 kms (16 miles) from central Kos. If you're driving, ride-sharing or catching a taxi from the centre, it'll take 30 minutes or so to get there, depending on the traffic.
The trip when using public transport takes about 40 minutes.
Get your journey off to a leisurely start by staying near KGS. Whether you're boarding an early flight from Kos Airport to Athens International Airport or want to avoid feeling rushed, these hotels have you covered:

Arriving at Athens International Airport (ATH)

Book a hotel near ATH if you have a late Kos Airport to Athens International Airport flight. Pick one of these accommodation options and avoid the hassle of a long transfer:
Go where the road takes you with a Athens International Airport rental car. Pick up a set of wheels from Centauro, Green Motion or Surprice and discover more of Athens and beyond.
Secure the lowest price by booking your vehicle from Athens International Airport about three weeks before your departure date.

When to fly to Athens International Airport (ATH)

August is the most popular month for flights from Kos Airport to Athens International Airport. To steer clear of the crowds, go to Athens in March.
When booking your flight from Kos Airport to Athens International Airport, consider the type of weather you enjoy. July is the warmest month in Athens, with temperatures ranging from 22ºC to 37ºC.
Search for cheap tickets from KGS to ATH in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between 4ºC and 14ºC on average.

Explore more of Greece

Thessaloniki is just one of the many places in Greece waiting to be explored once you've taken in the sights of Athens. Around 306 kms (190 miles) away to the north, its best attractions include Church of Agia Sofia, Archaeological Museum of Thessaloniki and Alexander the Great Statue.
If you're eager to discover another major stop in Greece, consider Larisa, about 209 kms (130 miles) north-west of Athens. Larissa Ancient Ruins, Municipal Art Gallery of Larissa and The Church Of St. George are among the biggest draws.