Cheap flights from Athens to Kos from £39

The cheapest month to fly to Kos from Athens is in February. Flight prices, which tend to average around £77, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Kos from Athens during December instead. Flights to Kos in December, while not as cheap as those in February, still average around £86.

According to our data, Friday is the cheapest day to fly to Kos from Athens. The lowest ticket price found for a Friday departure recently was £143. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Kos is Monday, with ticket prices averaging around £186.

Our most recent data shows that the best time of day to fly to Kos is in the afternoon. Flights from Athens to Kos during this time can be as low as £146. In the evening is when there is more demand to fly to Kos, so prices are often more expensive at around £186 per ticket.

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 £115 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kos from Athens for as low as £99 on momondo.

There is only 1 cabin class 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 19% 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 73 minutes.

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

Wednesday is statistically the day of the week that experiences the fewest 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 fewest delays on this route over the last 12 months, with about 15% of their flights experiencing any sort of delay.

As of October 2026, there are 4 flights per day flying from Athens to Kos. The most common time of day flights depart is 16:00, with 40% of flights taking off at midday.

The number of flights available between Athens and Kos is 30 per week as of October 2026. The most frequent departure day is Wed, with 27% of weekly flights leaving on this day.