Portland (PDX) to Istanbul (IST): 6,180 miles (9,945 km) great-circle, about 12h 50m nonstop by our estimate. Cheapest fare observed: $1061 round-trip on KLM, with 1 stop, departing May 30, 2026.
$1061 round-trip, KLM KL616, departing 2026-05-30 at 13:05, returning 2026-06-10. The recorded itinerary left on a Saturday, returning on a Wednesday 11 nights later; the fare was observed 35 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $1061, it ranked 25th of the 30 round-trip fares we recorded from PDX (median $378). That is 17.2 cents per great-circle mile (round-trip price over one-way distance), below the PDX median of 21.2 cents across 30 round-trip routes.
Routes from PDX of similar length: Almaty (6,174 mi) at $2047 and Hong Kong (6,559 mi) at $1521.
KLM had the cheapest fare on 2 of 30 PDX routes. It is the 4th longest of the 30 routes we track from PDX.
Of 117 departure airports with a fare to Istanbul, Portland (PDX) ranked 93rd at $1061. 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 America/Los_Angeles, Europe/Istanbul; flight time is our estimate.