Cheapest one-way flights from Chiang Mai to London in December from $214

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

One-Way flights

06 Dec Thai VietJet Air
04 Dec Thai AirAsia
03 Dec Thai VietJet Air
02 Dec Thai VietJet Air
15 Dec Thai VietJet Air
24 Dec Thai VietJet Air
09 Dec Etihad Airways
21 Dec Etihad Airways
18 Dec Etihad Airways
23 Dec Thai VietJet Air

Also check the deals for return 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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