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

View AU$151 flight on Mon, 31 Aug 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 for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Aegean
Fri, 17 July - Wed, 29 July
IST
Istanbul
KGS
Kos
AU$421 Return, found 6 days ago
AU$421
Return
found 6 days ago
Select Aegean flight, departing Fri, 17 July from Istanbul to Kos, returning Wed, 29 July, priced at AU$421 found 6 days ago
Aegean
Fri, 17 July - Wed, 29 July
IST
Istanbul
KGS
Kos
AU$425 Return, found 6 days ago
AU$425
Return
found 6 days ago
Select Aegean flight, departing Fri, 17 July from Istanbul to Kos, returning Wed, 29 July, priced at AU$425 found 6 days ago
Aegean
Fri, 17 July - Wed, 29 July
IST
Istanbul
KGS
Kos
AU$427 Return, found 6 days ago
AU$427
Return
found 6 days ago
Select Aegean flight, departing Fri, 17 July from Istanbul to Kos, returning Wed, 29 July, priced at AU$427 found 6 days ago
Aegean
Fri, 17 July - Wed, 29 July
IST
Istanbul
KGS
Kos
AU$431 Return, found 6 days ago
AU$431
Return
found 6 days ago
Select Aegean flight, departing Fri, 17 July from Istanbul to Kos, returning Wed, 29 July, priced at AU$431 found 6 days ago
Aegean
Fri, 17 July - Wed, 29 July
IST
Istanbul
KGS
Kos
AU$455 Return, found 6 days ago
AU$455
Return
found 6 days ago
Select Aegean flight, departing Fri, 17 July from Istanbul to Kos, returning Wed, 29 July, priced at AU$455 found 6 days ago
Aegean
Fri, 17 July - Wed, 29 July
IST
Istanbul
KGS
Kos
AU$460 Return, found 6 days ago
AU$460
Return
found 6 days ago
Select Aegean flight, departing Fri, 17 July from Istanbul to Kos, returning Wed, 29 July, priced at AU$460 found 6 days ago
Aegean
Fri, 17 July - Wed, 29 July
IST
Istanbul
KGS
Kos
AU$462 Return, found 6 days ago
AU$462
Return
found 6 days ago
Select Aegean flight, departing Fri, 17 July from Istanbul to Kos, returning Wed, 29 July, priced at AU$462 found 6 days ago
Aegean
Fri, 17 July - Wed, 29 July
IST
Istanbul
KGS
Kos
AU$463 Return, found 6 days ago
AU$463
Return
found 6 days ago
Select Aegean flight, departing Fri, 17 July from Istanbul to Kos, returning Wed, 29 July, priced at AU$463 found 6 days ago
Aegean
Fri, 17 July - Wed, 29 July
IST
Istanbul
KGS
Kos
AU$466 Return, found 6 days ago
AU$466
Return
found 6 days ago
Select Aegean flight, departing Fri, 17 July from Istanbul to Kos, returning Wed, 29 July, priced at AU$466 found 6 days ago
SKY express
Fri, 17 July - Wed, 29 July
IST
Istanbul
KGS
Kos
AU$798 Return, found 6 days ago
AU$798
Return
found 6 days ago
Select SKY express flight, departing Fri, 17 July from Istanbul to Kos, returning Wed, 29 July, priced at AU$798 found 6 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)?
To find a cheap flight from Istanbul (IST) to Kos (KGS), 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-Kos Island Intl.)?
The earliest flight from Istanbul (IST) to Kos (KGS-Kos Island Intl.) typically departs at around 1:35 AM local time. This route is operated by Turkish Airlines and Aegean. This is a seasonal service, active only in October. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select 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.)?
There are no nonstop flights from Istanbul (IST) to Kos (KGS-Kos Island Intl.). For flights with one stop, you can expect the journey to typically take around 3 hours 48 minutes. Flights with two or more stops usually take longer, averaging about 15 hours. The distance between these two destinations is approximately 515 kilometres. Keep in mind that actual flight times can vary based on factors like layover duration, routing, and wind conditions.
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.
What airports do you fly into for Kos (KGS) from Istanbul (IST)?
If you're planning to travel to Kos from Istanbul Airport (IST), you can fly directly into Kos Island Intl. (KGS). Some flights may connect through major hubs like Frederic Chopin (WAW) or Nikos Kazantzakis (HER) before reaching Kos. Compare routes and airports on Expedia to find the best flight options for your travel plans.
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)?
If you booked your Istanbul (IST) to Kos (KGS) 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.
Return price
AU$420
Distance
512 km

Book with confidence

Your quick guide to flights from Istanbul to Kos

Pick up great flights from Istanbul to Kos

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Istanbul to Kos. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Istanbul to Kos that take around hours.

Find cheap flights from Istanbul to Kos

From the great flight deals with prices currently ranging from AU$421 to AU$798, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Istanbul to Kos around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Kos is normally in July.

Reasons to book your flight from Istanbul to Kos with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Istanbul to Kos across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Kos right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Istanbul to Kos

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*Available to Expedia members.