The cheapest round-trip from Brussels to Istanbul is about 143 EUR, usually in October 2026; May 2027 is priciest, so booking the low month saves around 91 EUR (~39%). Typical fare ~160 EUR, from 270 priced fares. Flightmussy live data, updated 2026-06-05.
Cheap flights from Brussels (BRU/CRL) to Istanbul (IST/SAW). Free, no signup, no ads, no tracking. Compare every airline across 12 months of fares on one heatmap — including low-cost carriers Google Flights often deprioritises.
Cheapest round-trip seen: 143 EUR, usually around October 2026. Typical fare ~160 EUR. Across the year prices range roughly 143–234 EUR — about 39% cheaper in the low season than the peak (May 2027). Carriers on this route include AJet, Brussels Airlines, Turkish Airlines.
Based on Flightmussy's live 12-month fare data; prices last updated 2026-06-05. Prices change constantly — search live for current fares.
Share this finding: post on X · image card for Instagram / WhatsApp.
Flightmussy is a free, independent flight search for travellers anywhere in the world. No signup, no ads, no tracking — email is optional, only for route price alerts. Compare fares across every airline and see 12 months of prices at a glance, including the low-cost carriers Google Flights often buries. Book directly with the airline or a trusted partner — we never add a markup.
Flightmussy runs its own 12-month forward fare scans across thousands of routes worldwide and publishes the data openly. Read the cheapest month to fly almost anywhere → — a global study of when fares are lowest — or browse the cheapest destinations from a city: