Helsinki (HEL) to Istanbul (IST): 1,326 miles (2,133 km) great-circle, about 3h 10m nonstop by our estimate. Cheapest fare observed: $198 round-trip on Pegasus Airlines, nonstop, departing May 2, 2026.
$198 round-trip, Pegasus Airlines PC1312, departing 2026-05-02 at 15:45, returning 2026-05-09. The recorded itinerary left on a Saturday, returning on a Saturday 7 nights later; the fare was observed 7 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $198, it ranked 6th of the 30 round-trip fares we recorded from HEL (median $288). That is 14.9 cents per great-circle mile (round-trip price over one-way distance), below the HEL median of 28.7 cents across 30 round-trip routes.
Routes from HEL of similar length: Sochi (1,322 mi) at $557 and Nice (1,367 mi) at $261.
Pegasus Airlines had the cheapest fare on 5 of 30 HEL routes. It is the 13th longest of the 30 routes we track from HEL.
Of 117 departure airports with a fare to Istanbul, Helsinki (HEL) ranked 27th at $198. Lowest: $60 from Antalya (AYT); highest: $1639 from Wellington (WLG); 29 nonstop. Cheapest-fare airlines (routes): Pegasus Airlines (13), Qatar (7), WestJet (6), Wizz Air (6), Gulf Air (5) and Turkish (5), plus 51 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Europe/Helsinki, Europe/Istanbul; flight time is our estimate.