The cheapest Madrid to Chiang Mai return flight on the radar right now is €695, flying with Etihad Airways via one or more connections. It covers departures in November 2026, and every dated link below opens that exact MAD–CNX search on Skyscanner. The price we usually record on this route is €563. Across 29 recorded checks it has ranged between €468 and €865. Our sampling points to November 2026 as the cheapest month to fly Madrid to Chiang Mai.
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 Madrid? We track 38 other departure cities for Chiang Mai, listed at the foot of this page.
Fares move quickly. If this Madrid to Chiang Mai 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.