The cheapest Istanbul to Algiers return flight on the radar right now is €163, flying with Pegasus Airlines non-stop. It covers departures in October 2026, and every dated link below opens that exact IST–ALG search on Skyscanner. That is roughly 19% below the €200 this route usually costs. Across 98 recorded checks it has ranged between €74 and €398. Our sampling points to October 2026 as the cheapest month to fly Istanbul to Algiers.
Every fare here is re-confirmed against Skyscanner automatically, and each one is stamped with the moment it was last checked, so you can see how fresh it is instead of taking it on trust. Not flying from Istanbul? We track 54 other departure cities for Algiers, listed at the foot of this page.
Fares move quickly. If this Istanbul to Algiers price has gone by the time you search, shift the dates a day or two either side, because the same route is often still cheap just next door.