Cheap flights from London to Chiang Mai from £221

The month of May is, on average, the cheapest month to fly to Chiang Mai from London, with most prices found around £555. If you aren’t able to travel during the month of May, then book flights to Chiang Mai from London during November instead. Flights to Chiang Mai in November, while not as cheap as those in May, still average around £560.

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 £757 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 £677 on momondo.

You could potentially save up to 41% on your flight if you consider stops on a London to Chiang Mai flight.

As of July 2026, prices for London to Chiang Mai flights are approximately 13% cheaper when compared to flights at the same time last year.

Air China, China Eastern, and SWISS 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 37% 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.

Bangkok (BKK) 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 20m.

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