Cheapest return flights from Chiang Mai to London in December from $856

AirHint found the following cheapest return flights from Chiang Mai (CNX) to London (LGW) in December 2025 (see full year).

Return flights

31 Dec - 09 Jan Thai VietJet Air
26 Dec - 03 Jan Thai VietJet Air
28 Dec - 11 Jan Thai VietJet Air
30 Dec - 06 Jan Thai Lion Air
26 Dec - 27 Dec Singapore Airlines

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

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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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