From €158 return per person · cheapest departure 12 Feb
In short: The cheapest return flight from Frankfurt am Main to Istanbul we found costs €158 per person (departure 12 Feb, Lufthansa, nonstop, 3 h 10 min). Prices by departure week range from €158 to €283; the typical price is €173. Source: Google Flights, updated 25 October 2026.
When is it cheapest to fly?
Cheapest: departure 12 Feb · €158 return, per person Most expensive: 25 Dec · €283. Booking the cheapest week saves up to 44 %. Cheapest return fare per person for a departure each week (trips of 7–7 days), economy class. Prices from Google Flights, read weekly; they change daily.
Cheapest departure
💰12 Feb – 19 Feb€158Lufthansa · nonstop · 3 h 10 min · return, per person