$505 Cheap Finnair flights Istanbul (IST) to Reykjavik (KEF)

View $505 flight on Tue, Oct 14, 2025Opens in a new window

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$505 Cheap Finnair flights Istanbul (IST) to Reykjavik (KEF)

Prices were available within the past 7 days and start at $505 for one-way flights and $1,002 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Finnair
Wed, Oct 15 - Tue, Oct 21
IST
Istanbul
KEF
Reykjavik
$1,002 Roundtrip, found 5 days ago
$1,002
Roundtrip
found 5 days ago
Select Finnair flight, departing Wed, Oct 15 from Istanbul to Reykjavik, returning Tue, Oct 21, priced at $1,002 found 5 days ago
Flights from Istanbul (IST) to Reykjavik (KEF)
Origin airport
Istanbul
Destination airport
Keflavik Intl.
Airlines serving
Air Baltic, British Airways, Finnair, Icelandair, KLM, LOT-Polish Airlines, Lufthansa, Turkish Airlines
Popular airline
Icelandair
Distance
2557 mi

Frequently asked questions

How much is a Finnair flight from Istanbul (IST) to Keflavik Intl. Airport (KEF)?
Set the "Price (lowest to highest)" filter on Expedia to look for cheap Finnair return flights from $1,002 from IST to KEF. Affordable one-way tickets from $505 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from IST to KEF with Finnair?
Look for return or one-way flights to Reykjavik in January or April. You could find lower fares with Finnair during these off-peak travel months.
What is the cheapest time to book flights from Istanbul (IST) to Keflavik Intl. Airport (KEF) with Finnair?
Search for Finnair flights from IST to KEF about one month before you want to go. The cheapest time to reserve an international flight is generally 18 to 29 days ahead of your travel date when you can save 17% versus booking four to five months in advance. Regardless of itinerary or fare class, the best day of the week to book international airfare is usually Sunday. Friday is often the most expensive. Travelers booking on a Sunday can save 17% on average compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Finnair fly nonstop from Istanbul (IST) to Keflavik Intl. Airport (KEF)?
To find out if there's a direct journey from IST to KEF with Finnair or any other airlines, use our "Nonstop" filter when searching for flights.
What is the earliest Finnair flight from IST to KEF?
Search Finnair's earliest flights from IST to KEF by selecting our "Morning" and "Early Morning" filters. Not only will you get to your destination sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Can I change or cancel my Finnair flight from Istanbul (IST) to Keflavik Intl. Airport (KEF)?
Depending on your ticket type, a fee typically applies if you cancel or change your flight more than 24 hours after it's been confirmed. To find flexible plane tickets, select our "Changes included" or "No cancel fee" filter when you search for flights. For more information on changing or canceling your reservation, head to "Trips," select your flight and tick "Manage Booking."

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