Cheapest return flights from London to Chiang Mai in September from $472

AirHint found the following cheapest return flights from London (LGW) to Chiang Mai (CNX) in September 2026 (see full year).

Return flights

20 Sep - 13 Oct Air China
18 Sep - 30 Sep Air China
08 Sep - 22 Sep AirAsia X
12 Sep - 26 Sep China Eastern
16 Sep - 30 Sep Condor
18 Sep - 04 Oct Air China
01 Sep - 30 Sep China Eastern
11 Sep - 24 Sep Condor
11 Sep - 26 Sep AirAsia X
14 Sep - 28 Sep Air China
07 Sep - 20 Sep China Eastern
02 Sep - 09 Sep Condor

Also check the deals for one-way flights from London to Chiang Mai in September.

Powered by

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Chiang Mai

Cheap car rent in Chiang Mai

Feel free to contact us with any feedback or request another flight research.