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£68 Cheap Flights from Istanbul (IST) to Kos (KGS)

View £68 flight on Tue, 17 Nov 2026Opens in a new window

Popular airlines from Istanbul Airport (IST) to Kos (KGS-Kos Island Intl.)

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Cheap Flights from Istanbul (IST) to Kos (KGS)

Prices were available within the past 7 days and start at £68 for one-way flights and £148 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aegean
Thu, 22 Oct - Sun, 25 Oct
IST
Istanbul
KGS
Kos
£148 Return, found 5 days ago
£148
Return
found 5 days ago
Select Aegean flight, departing Thu, 22 Oct from Istanbul to Kos, returning Sun, 25 Oct, priced at £148 found 5 days ago
Aegean
Thu, 22 Oct - Sun, 25 Oct
IST
Istanbul
KGS
Kos
£149 Return, found 5 days ago
£149
Return
found 5 days ago
Select Aegean flight, departing Thu, 22 Oct from Istanbul to Kos, returning Sun, 25 Oct, priced at £149 found 5 days ago
Aegean
Thu, 22 Oct - Sun, 25 Oct
IST
Istanbul
KGS
Kos
£158 Return, found 5 days ago
£158
Return
found 5 days ago
Select Aegean flight, departing Thu, 22 Oct from Istanbul to Kos, returning Sun, 25 Oct, priced at £158 found 5 days ago
Aegean
Thu, 22 Oct - Sun, 25 Oct
IST
Istanbul
KGS
Kos
£159 Return, found 5 days ago
£159
Return
found 5 days ago
Select Aegean flight, departing Thu, 22 Oct from Istanbul to Kos, returning Sun, 25 Oct, priced at £159 found 5 days ago
Aegean
Thu, 22 Oct - Sun, 25 Oct
IST
Istanbul
KGS
Kos
£160 Return, found 5 days ago
£160
Return
found 5 days ago
Select Aegean flight, departing Thu, 22 Oct from Istanbul to Kos, returning Sun, 25 Oct, priced at £160 found 5 days ago
Aegean
Mon, 24 Aug - Mon, 31 Aug
IST
Istanbul
KGS
Kos
£169 Return, found 3 days ago
£169
Return
found 3 days ago
Select Aegean flight, departing Mon, 24 Aug from Istanbul to Kos, returning Mon, 31 Aug, priced at £169 found 3 days ago
Aegean
Thu, 22 Oct - Sun, 25 Oct
IST
Istanbul
KGS
Kos
£170 Return, found 5 days ago
£170
Return
found 5 days ago
Select Aegean flight, departing Thu, 22 Oct from Istanbul to Kos, returning Sun, 25 Oct, priced at £170 found 5 days ago
Aegean
Thu, 22 Oct - Sun, 25 Oct
IST
Istanbul
KGS
Kos
£171 Return, found 5 days ago
£171
Return
found 5 days ago
Select Aegean flight, departing Thu, 22 Oct from Istanbul to Kos, returning Sun, 25 Oct, priced at £171 found 5 days ago
Aegean
Thu, 22 Oct - Sun, 25 Oct
IST
Istanbul
KGS
Kos
£172 Return, found 5 days ago
£172
Return
found 5 days ago
Select Aegean flight, departing Thu, 22 Oct from Istanbul to Kos, returning Sun, 25 Oct, priced at £172 found 5 days ago
SKY express
Thu, 22 Oct - Sun, 25 Oct
IST
Istanbul
KGS
Kos
£192 Return, found 5 days ago
£192
Return
found 5 days ago
Select SKY express flight, departing Thu, 22 Oct from Istanbul to Kos, returning Sun, 25 Oct, priced at £192 found 5 days ago

Frequently asked questions

How much does a flight from Istanbul (IST) to Kos (KGS-Kos Island Intl.) cost?
You can find one-way and return flights from IST to KGS with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when IST to KGS ticket fares go up or down.
What is the cheapest month to fly from Istanbul (IST) to Kos (KGS-Kos Island Intl.)?
The cheapest months to fly from IST to KGS are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Istanbul (IST) to Kos (KGS)?
Enter IST to KGS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Istanbul (IST) to Kos (KGS-Kos Island Intl.)?
To find a cheap flight from Istanbul (IST) to Kos (KGS-Kos Island Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Istanbul (IST) to Kos (KGS-Kos Island Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Istanbul (IST) to Kos (KGS-Kos Island Intl.)?
There are approximately 9 connecting flights per day from Istanbul (IST) to Kos (KGS-Kos Island Intl.). Some common connection points include Eleftherios Venizelos (ATH), Frederic Chopin (WAW), and Nikos Kazantzakis (HER).
What is the earliest flight from Istanbul (IST) to Kos (KGS)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Istanbul (IST) to Kos (KGS). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Istanbul (IST) to Kos (KGS-Kos Island Intl.)?
You'll typically find the most flights from Istanbul (IST) to Kos (KGS-Kos Island Intl.) on a Saturday, with around 11 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Aegean, LOT-Polish Airlines, and Turkish Airlines. Saturdays offer notably more flight options compared to other days of the week, like Thursday which has around 3 flights.
What are the most popular departure times for flights from Istanbul (IST) to Kos (KGS-Kos Island Intl.)?
The most popular departure times for flights from Istanbul (IST) to Kos (KGS-Kos Island Intl.) are in the afternoon, from 3pm to 6pm. Many major carriers, including Aegean and LOT-Polish Airlines, offer flights during this window. This timing works well because it allows you to have a productive morning before your flight and arrive at your destination in the early evening.
How long does it take to fly from Istanbul (IST) to Kos (KGS-Kos Island Intl.)?
Flying from IST to KGS with a connection usually takes about 4 hours 20 minutes, traveling roughly 515 kilometers. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Istanbul (IST) to Kos (KGS-Kos Island Intl.)?
Yes, you can fly business class between IST and KGS. You can fly business class with Turkish Airlines and Aegean.
How do I earn miles on a Istanbul (IST) to Kos (KGS) flight with Expedia?
It's easy to earn miles on a Istanbul (IST) to Kos (KGS) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Istanbul (IST) to Kos (KGS) at the last minute?
Typically, booking a last minute flight from Istanbul (IST) to Kos (KGS) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Istanbul (IST) to Kos (KGS) flight and hotel package?
Securing a Istanbul (IST) to Kos (KGS) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Istanbul (IST) to Kos (KGS-Kos Island Intl.)?
If you booked your Istanbul (IST) to Kos (KGS-Kos Island Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Istanbul
Destination airport
Kos Island Intl.
Airlines serving
Aegean, SKY express
Return price
£148
Distance
512 km

Book with confidence

Compare flights from Istanbul to Kos easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Istanbul to Kos. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Kos Island Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Istanbul to Kos Island Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Istanbul (IST) to Kos Island Intl. (KGS)

The easiest way to view the best deals on flights from Istanbul to Kos today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Istanbul to Kos Island Intl. start at just £148 and range up to £304.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Istanbul and Kos
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Istanbul to Kos flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Istanbul to Kos Island Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Istanbul to Kos easily and book with confidence

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*Available to Expedia members.