Cheapest return flights from London to Chiang Mai in May from $478

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

Return flights

17 May - 23 May Air China
10 May - 23 May Air China
06 May - 19 May Air China
04 May - 18 May Air China
03 May - 12 May Air China
13 May - 21 May China Eastern
03 May - 13 May China Eastern
02 May - 16 May China Eastern
05 May - 19 May China Eastern
18 May - 28 May Air China
27 May - 03 Jun China Eastern
24 May - 16 Jun Air China
18 May - 10 Jun China Eastern
31 May - 14 Jun China Eastern
29 May - 07 Jun China Eastern
31 May - 15 Jun China Eastern
27 May - 24 Jun China Eastern
11 May - 08 Jun China Eastern
27 May - 04 Jun China Eastern
22 May - 07 Jun China Eastern

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

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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.

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