The cheapest Luxembourg to Bangkok return flight on the radar right now is €418, flying with China Southern via one or more connections. It covers departures in November 2026, and every dated link below opens that exact LUX–BKK search on Skyscanner. At 30% under the €594 we normally record here, it is one of the strongest LUX–BKK fares in our index. Across 81 recorded checks it has ranged between €418 and €672. Our sampling points to November 2026 as the cheapest month to fly Luxembourg to Bangkok.
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 Luxembourg? We track 64 other departure cities for Bangkok, listed at the foot of this page.
Fares move quickly. If this Luxembourg to Bangkok 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.