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 20/03/26 2 Stopovers (PVG, KMG) MU0552, MU5816, MU9639 29h 05min	Return 17/04/26 1 Stopover (PVG) MU0206, MU0551 33h 45min	China Eastern Airlines		£628
Best option London Heathrow Chiang Mai	Outbound 07/02/26 1 Stopover (AUH) EY0062, EY0426 14h 15min	Return 23/02/26 1 Stopover (BKK) TG0113, TG0910 20h 35min	Etihad Airways	?	£828
London Heathrow Chiang Mai Please note: transfer for connecting flight	Outbound 07/02/26 1 Stopover (AUH) EY0062, EY0426 14h 15min	Return 23/02/26 1 Stopover (BKK) FD4097, TG0910 19h 25min	Etihad Airways		£874
London Heathrow Chiang Mai	Outbound 07/02/26 1 Stopover (AUH) EY0062, EY0426 14h 15min	Return 23/02/26 2 Stopovers (BKK, BOM) FD4097, 6E1060, 6E0001 32h 05min	Etihad Airways		£631
London Heathrow Chiang Mai	Outbound 20/03/26 2 Stopovers (PVG, KMG) MU0552, MU5816, MU9639 29h 05min	Return 17/04/26 1 Stopover (PVG) MU0206, MU0551 33h 45min	China Eastern Airlines		£637
London Heathrow Chiang Mai	Outbound 07/02/26 2 Stopovers (SZX, BKK, DMK) ZH0888, ZH0305, SL0514 37h 50min	Return 23/02/26 2 Stopovers (DMK, BKK, AUH) SL0515, EY0405, EY0061 42h 55min	Shenzhen Airlines, Thai Lion Air	?	£674
London Heathrow Chiang Mai	Outbound 07/02/26 1 Stopover (PVG) MU0552, MU0205 34h 20min	Return 23/02/26 2 Stopovers (KMG, PVG) MU9640, MU0747, MU0551 38h 25min	China Eastern Airlines		£737
London Heathrow Chiang Mai	Outbound 07/02/26 1 Stopover (AUH) EY0062, EY0426 14h 15min	Return 23/02/26 2 Stopovers (BKK, BOM) PG0224, AI2338, AI0129 29h 55min	Etihad Airways		£738
London Heathrow Chiang Mai	Outbound 18/03/26 2 Stopovers (VIE, BKK) OS0338, OS0007, OS8683 16h 35min	Return 20/04/26 2 Stopovers (BKK, VIE) OS8680, OS0008, OS0331 18h 20min	Austrian Airlines	?	£782

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 GBP
Outbound and return from	627,99 GBP
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 292 GBP
Flight London Heathrow - Phuket from 331 GBP
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