There are most likely no direct flights on the Istanbul — Kos route
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Istanbul to Kos. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
In different months, ticket prices from Istanbul to Kos vary: minimum — $112 (October 2026), maximum — $149 (July 2027). Typically, the flight costs $130–$279.
A non-stop flight is the most convenient and comfortable way to fly from Istanbul to Kos, despite the fact that sometimes flights with transfers can cost significantly less.
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Answers to questions about the route that travelers are most interested in.
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Flight costs from Istanbul to Kos climb toward the middle of the period, then start to drop. By choosing the right dates, you can save noticeably.
Prices rise from October 2026 to July 2027 (+32%), then decline from September 2026 to October 2026 (13%). The cheapest tickets are in September 2026–October 2026 (averaging $121), while the priciest are in October 2026–July 2027 ($131).
For savings, plan your flight for September 2026–October 2026 — you could save up to 7%. Try to avoid October 2026–July 2027 when possible: prices are at their highest then.
Price spread on this route is 11.4%. Costs depend heavily on the season, so flexibility in choosing your departure month is especially valuable here.
There are most likely no direct flights on the Istanbul — Kos route
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There appear to be no non-stop flights from Istanbul to Kos at this time.... Well, or something went wrong on our side and we couldn't find anything
starting at $127
starting at $134
The Istanbul — Kos route is served by multiple airlines, including Aegean Airlines and Wizz Air. This is convenient for those who want the best balance of price, schedule, and travel conditions. Tickets start from $127, and depending on season and promotions, even better deals may appear. With our service, you can easily compare available options and book tickets that match your plans. The variety of carriers allows flexible choices and comfortable travel without overpaying.
The cheapest flight ticket from Istanbul to Kos according to data for the last 48 hours costs $127
Often the best time to buy tickets from Istanbul to Kos is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Istanbul to Kos can be found flying in these months: October, September, July.
The fastest flights from Istanbul to Kos start from 4 hours 15 minutes in the air.
The following airlines operate direct flights on the route Istanbul — Kos:
The cheapest one-way flight from Istanbul to Kos departs on 11/05/2026, is operated by Aegean Airlines and costs $127
The cheapest roundtrip flight from Istanbul to Kos departs on 06/05/2027, is operated by Sky Express and costs $243
Fastest flight from Istanbul to Kos takes 4h 15m
There are no direct flights on this route.
The distance between Istanbul and Kos is 488km (303 miles). The time difference between Istanbul and Kos is 1h
We couldn't find any special offers for flights from Istanbul to Kos
