Our cheapest offers for flights from London Heathrow to Chiang Mai

Here you can compare cheap flights from London Heathrow (LHR) to Chiang Mai (CNX) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Chiang Mai. Prices and availability may change at any time.

	Outbound	Return	Airlines	Baggage	Price
London Heathrow Chiang Mai	Outbound 05/12/25 1 Stopover (AUH) EY0062, EY0426 14h 15min	Return -	Etihad Airways		£3,334
London Heathrow Chiang Mai	Outbound 08/12/25 2 Stopovers (MCT, BKK) WY0104, WY0817, FD4096 29h 55min	Return 24/12/25 2 Stopovers (BKK, MCT) FD4101, WY0816, WY0101 42h 20min	Oman Air, Thai AirAsia		£652
Best option London Heathrow Chiang Mai	Outbound 22/12/25 1 Stopover (PEK) CA0938, CA0823 18h 25min	Return 10/01/26 1 Stopover (PEK) CA0824, CA0937 25h 45min	Air China		£867
London Heathrow Chiang Mai	Outbound 09/12/25 2 Stopovers (ZRH, BKK) LX0333, LX0180, LX4152 16h 55min	Return 24/12/25 2 Stopovers (BKK, ZRH) LX4151, LX0181, LX0340 18h 30min	Swiss International Air Lines	?	£704
London Heathrow Chiang Mai	Outbound 08/12/25 2 Stopovers (MUC, BKK) LH4193, LH0772, LH4610 27h 15min	Return 24/12/25 2 Stopovers (BKK, ZRH) LX4151, LX0181, LX0340 18h 30min	Lufthansa		£710
London Heathrow Chiang Mai	Outbound 08/12/25 2 Stopovers (MUC, BKK) LH4203, LH0772, PG0219 29h 25min	Return 24/12/25 2 Stopovers (BKK, MUC) LH4611, LH0773, LH4192 19h 20min	Lufthansa, Bangkok Airways		£762
London Heathrow Chiang Mai	Outbound 08/12/25 2 Stopovers (MUC, BKK) LH4197, LH0772, LH4610 18h 10min	Return 27/12/25 2 Stopovers (BKK, VIE) OS8684, OS0006, OS0339 18h 30min	Lufthansa	?	£780
London Heathrow Chiang Mai	Outbound 08/12/25 2 Stopovers (MUC, BKK) LH4197, LH0772, LH4610 18h 10min	Return 24/12/25 2 Stopovers (BKK, ZRH) LX4151, LX0181, LX0340 18h 30min	Lufthansa		£810
London Heathrow Chiang Mai	Outbound 22/12/25 1 Stopover (PEK) CA0856, CA0823 21h 10min	Return 10/01/26 1 Stopover (PEK) CA0824, CA0937 25h 45min	Air China		£860
London Heathrow Chiang Mai	Outbound 08/12/25 2 Stopovers (MUC, BKK) LH2477, LH0772, LH4610 19h 20min	Return 24/12/25 2 Stopovers (BKK, ZRH) LX4151, LX0181, LX0340 18h 30min	Lufthansa	?	£862

Tips and tricks to help you find cheap flights from London Heathrow to Chiang Mai

Important flight information

Flight information: London Heathrow - Chiang Mai

Cheapest outbound flight from	£ 3.333,18
Outbound and return from	£ 651,10
Distance	9025 km
Departure airport	Airport London Heathrow (LHR)
Arrival airport	Airport Chiang Mai (CNX)
Destination country	Flights to Thailand

Alternative routes to Thailand

Flight London Heathrow - Bangkok from £ 339
Flight London Heathrow - Phuket from £ 331
Flight London Heathrow - Koh Samui from £ 750

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