AirHint found the following cheapest return flights from Chiang Mai (CNX) to London (LGW) in December 2025 (see full year).
Return flights
| 27 Dec - 13 Jan | Thai VietJet Air | ||
| 15 Dec - 04 Jan | Thai VietJet Air | ||
| 29 Dec - 15 Jan | British Airways | ||
| 27 Dec - 08 Jan | British Airways | ||
| 30 Dec - 15 Jan | British Airways | ||
| 26 Dec - 15 Jan | Qatar Airways |
Also check the deals for one-way flights from Chiang Mai to London in December.
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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