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Cheap Flights from Kos to Istanbul

Compare Kos to Istanbul flight deals

Find the cheapest month or even day of the year to fly to Istanbul

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Flight deals from Kos to Istanbul

Looking for a cheap last-minute deal or the best return flight from Kos Airport to Istanbul? If you want to travel next month, return fares start from R 4,012. Find the lowest prices on one-way and return tickets right here.
Istanbul.R 1,515 per passenger.Departing Wed, 10 Jun.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from Kos on Wed, 10 Jun, arriving in Istanbul.Price includes taxes and charges.From R 1,515, select.
Istanbul.R 1,625 per passenger.Departing Wed, 15 Apr.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from Kos on Wed, 15 Apr, arriving in Istanbul Sabiha.Price includes taxes and charges.From R 1,625, select.
Istanbul.R 1,955 per passenger.Departing Sat, 16 May.One-way flight with SKY express.Outbound indirect flight with SKY express, departs from Kos on Sat, 16 May, arriving in Istanbul.Price includes taxes and charges.From R 1,955, select.
Istanbul.R 2,243 per passenger.Departing Wed, 5 Aug.One-way flight with SKY express.Outbound indirect flight with SKY express, departs from Kos on Wed, 5 Aug, arriving in Istanbul.Price includes taxes and charges.From R 2,243, select.
Istanbul.R 2,244 per passenger.Departing Mon, 13 Jul.One-way flight with SKY express.Outbound indirect flight with SKY express, departs from Kos on Mon, 13 Jul, arriving in Istanbul.Price includes taxes and charges.From R 2,244, select.
Istanbul.R 2,328 per passenger.Departing Mon, 7 Sep.One-way flight with Aegean Airlines.Outbound indirect flight with Aegean Airlines, departs from Kos on Mon, 7 Sep, arriving in Istanbul.Price includes taxes and charges.From R 2,328, select.

Find the cheapest month to fly from Kos to Istanbul

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Kos to Istanbul flights are currently cheapest in June.
Apr
from R 1,625
May
from R 1,955
Jun
from R 1,515
Jul
from R 2,244
Aug
from R 2,243
Sep
from R 2,328
Oct
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Nov
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Dec
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Jan
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Feb
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Mar
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Alternative Kos to Istanbul routes

Looking for the cheapest, fastest or easiest route from Kos to Istanbul? You could fly into the following airports instead.

Istanbul Sabiha

30km from central Istanbul
Closest
from R 1,625
Search flights

Istanbul

34km from central Istanbul
Cheapest
from R 1,515
Search flights

Kos to Istanbul: Flight information

The things to know before you go.
Cheapest flight foundR 1,515
Cheapest month to flyJune

Finding cheap flights from Kos to Istanbul: Frequently asked questions

There are 2 airports in Istanbul: Istanbul Sabiha and Istanbul.
The best price we found for a return flight from Kos to Istanbul is R 3,892. 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.
Currently, there are no airlines that fly direct from Kos to Istanbul. But we found flights with one or more stops from R 3,892.
As of April 2026, there are no flights flying from Kos to Istanbul.
The cheapest month to fly from Kos to Istanbul is usually April.
If you're flying from Kos Airport, the cheapest airport near Istanbul is Istanbul – which is 34.4 km away from the centre of Istanbul. We've found flights into this airport from R 3,892.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Kos Airport to Istanbul on Wednesday, 22 April 2026.
No airlines currently offer direct flights between Kos Airport and Istanbul. Most routes have one or more stops.
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 Istanbul 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.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Istanbul is around 40 days in advance, so don’t leave your flight to the last minute.
In April, the average temperature is usually around 12°C. August is typically the warmest month in Istanbul, when it usually averages around 27°C. You can expect the least rain in August. The coldest month is January, with temperatures averaging 4°C. The rainiest month is December.
Currently, Ryanair offers the cheapest flight tickets to Istanbul.

Travelling from Kos Airport (KGS) to Istanbul: what you need to know

  • To avoid missing your KGS to Istanbul flight, allow plenty of time to navigate the airport and find your gate. Turning up two hours before international departures and one hour before domestic flights is the standard rule.

  • Stopovers are the ideal opportunity to break up your journey and maybe even tick a new city off your list. When browsing for plane tickets from KGS to Istanbul, uncheck the 'Direct flights only' box to see where you can stop along the way. Popular options include:

    • Leonardo da Vinci-Fiumicino Airport (FCO)

    • Eleftherios Venizelos International Airport (ATH)

    • Vienna International Airport (VIE)

  • 89.58% of flights departing from Kos Airport land at their destination on schedule. Given its strong on-time stats, delays are unlikely when taking off from KGS.

How to find the cheapest flights from Kos Airport (KGS) to Istanbul

  • R 1,515 is currently the lowest price for a one-way Kos Airport to Istanbul flight. Return plane tickets start at R 3,892. These fares may change depending on demand.

  • Don't leave things to the last moment. You're more likely to land cheap flights from KGS to Istanbul if you book early. Airlines often have some excellent early bird rates.

  • If you have flexibility with your travel plans, make the most of the 'Whole month' search tool. It'll find the lowest price across each month when looking for a Kos Airport to Istanbul ticket.

  • Save time searching for cheap flights from KGS to Istanbul by setting up a Price Alert. You'll receive an email or notification on the app when a special offer becomes available.

  • Tailor your trip with filters. Pick your preferred departure and arrival times, total journey duration and airlines. You can also sort your results by 'Cheapest,' 'Best' or 'Fastest' flights from Kos Airport to Istanbul.

Airports in Istanbul

Istanbul Ataturk Airport (IST)

  • Istanbul Ataturk Airport (IST) to the centre of Istanbul takes about 50 minutes to reach by car. The centre is roughly 48 kilometres away.

  • It typically takes 1 hour 45 minutes if you're using public transport.

  • Look into staying at a hotel near IST if you're coming in on a late flight from Kos Airport to Istanbul. Choose one of these accommodation options and make arrival day easier:

  • Fast-track your adventure by picking up an Istanbul Ataturk Airport rental car. Grab your wheels from Hit, Avec car rentals or Eren Rent a Car and experience the lesser-explored corners of Istanbul and beyond.

  • Booking your ride from Istanbul Ataturk Airport around two weeks before your flight from KGS to Istanbul can help you lock in the lowest rate.

Sabiha Gokcen International Airport (SAW)

  • Central Istanbul is about 48 kilometres from Sabiha Gokcen International Airport (SAW). Once your flight from Kos Airport to Istanbul has hit the runway and you've navigated your way to arrivals, expect a drive of about 55 minutes.

  • You can expect the journey to take about 1 hour 30 minutes on public transport.

  • After stepping off your KGS to Istanbul flight, kick back at a hotel near SAW. These are some comfortable options that'll help you switch to relaxation mode:

  • No time to waste? The fastest way to get to where you're going is with a Sabiha Gokcen International Airport rental car. Pick up a set of wheels from Essence, Eren Rent a Car or 724 Rent and hit the road in a heartbeat.

  • Get the lowest price by securing your ride from SAW four weeks ahead of time. You'll also have access to a wider range of vehicles.

Best time to go to Istanbul

  • Visit Istanbul during high season if you want a busy atmosphere, but remember that hotel prices are usually higher. Alternatively, book flights from Kos Airport to Istanbul during the off-season when prices are cheaper and it's quieter.

  • The warmest month in Istanbul is August, with temperatures ranging between 20ºC (68ºF) and 30ºC (86ºF). Lock in your Kos Airport to Istanbul plane ticket then if that's your idea of comfortable weather.

  • January has average temperatures of between 2ºC (36ºF) and 11ºC (52ºF). Look for a cheap ticket from KGS to Istanbul around that time if you like travelling in cooler conditions.

More about Istanbul

  • After booking your flight from Kos Airport to Istanbul, choose a hotel that combines comfort with a great location. Make one of these accommodation options your base for exploring Istanbul:

  • There are so many things to discover in this city it can be difficult to know where to start. The Basilica Cistern, Topkapi Palace and Galata Tower are highlights which should be on any well-planned Istanbul itinerary.

Explore more of Türkiye (Turkey)

  • You've done Istanbul, now it's time to discover other corners of Türkiye (Turkey). Journey around 354 kilometres east to Ankara to tick off its top attractions. From Museum of Anatolian Civilizations to Kocatepe Mosque (Kocatepe Camii) and Genclik Park, you'll have a packed itinerary ahead.

  • If you want to check out another well-known destination in Türkiye (Turkey), head for Izmir, roughly 322 kilometres south-west of Istanbul. Kordonboyu, Kadifekale Castle and Alsancak are the start of reasons to visit.

Plan the rest of your trip from Kos to Istanbul

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.