The cheapest Istanbul to Bishkek return flight on the radar right now is €210, flying with Pegasus Airlines + AJet non-stop. It covers departures in March 2027, and every dated link below opens that exact IST–FRU search on Skyscanner. Across 11 recorded checks it has ranged between €204 and €222. Our sampling points to March 2027 as the cheapest month to fly Istanbul to Bishkek.
Prices are re-checked against Skyscanner automatically, and every one shows when it was last confirmed, so nothing here is older than it looks. Not flying from Istanbul? We track 21 other departure cities for Bishkek, listed at the foot of this page.
Prices like this tend to vanish fast. If it has gone when you look, try the days either side of the dates above, since Istanbul to Bishkek is often still worth booking within a day or two of the fare we found.