Cheap flights from Athens to Kos from $87

The cheapest month to fly to Kos from Athens is in December. Flight prices, which tend to average around $114, are often lower during this time because this is during the off-season. If you’re not able to fly to Kos in December, then January is your next best option. Flight prices from Athens to Kos during January average around $126.

The cheapest day to depart from Athens to Kos is on a Sunday when prices can be found for as low as $152. On the other hand, Monday is the most expensive day to depart from Athens because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $221.

Flying to Kos from Athens in the evening is the least expensive time of day to depart. momondo users have found prices as low as $169 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $197 on average. Flights to Kos from Athens in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Athens Eleftherios V. to Kos for the best Athens Eleftherios V. - Kos flight prices

You are more likely to see cheaper flights to Kos from Athens when booking weeks ahead of your departure date. In general, you can expect to find flights to Kos for around $152 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kos from Athens for as low as $133 on momondo.

There are 2 cabin classes available to choose from on Athens to Kos flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 20% of flights between Athens and Kos have experienced a delay on any given week. The average delay length over the past 12 months has been 78 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Olympic Air have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

8 flights are operational daily from Athens to Kos as of July 2026. The most popular departure time for this route is 7:00AM, with 43% of flights per day taking off in the afternoon.

The number of flights available between Athens and Kos is 57 per week as of July 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.