Cheap flights from London to Chiang Mai from £261

The month of November is, on average, the cheapest month to fly to Chiang Mai from London, with most prices found around £518. If you aren’t able to travel during the month of November, then book flights to Chiang Mai from London during May instead. Flights to Chiang Mai in May, while not as cheap as those in November, still average around £547.

You are more likely to see cheaper flights to Chiang Mai from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Chiang Mai for around £762 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chiang Mai from London for as low as £564 on momondo.

You could potentially save up to 1% on your flight if you consider stops on a London to Chiang Mai flight.

As of October 2026, prices for London to Chiang Mai flights are approximately 15% more expensive when compared to flights at the same time last year.

China Eastern, Gulf Air, and Oman Air are the most popular carriers operating from London to Chiang Mai

Thai Airways, Etihad Airways and Air China are the top three most popular airlines that fly to Chiang Mai from London according to our data. Thai Airways is the first choice among our users, with 35% of people opting to fly with this airline when travelling to Chiang Mai. Keep in mind that there are 7 different airlines that fly to Chiang Mai on a routine basis, so you have a few additional options to choose from.

Abu Dhabi (AUH) was the most common stop: 28% of momondo users choosing one-stop flights on this route connected there.

Flights via Shanghai (PVG) offer the lowest average return price of £415.

Flights connecting via Abu Dhabi (AUH) have the shortest average one-way travel time: 14h 24m.

Abu Dhabi (AUH) has the shortest average stopover time for this route: 1h 19m.