This page follows a single route: London (LHR) to Chiang Mai (CNX), return. Below is the lowest fare our radar has found on it, the exact outbound and return dates that price was available on, how it compares with what the route normally costs, and every price we have recorded for it so far.
Prices are re-checked against Skyscanner automatically, so each one carries the moment it was last confirmed. If London is not your airport, the other departure cities we track for Chiang Mai are listed further down.
The cheapest London to Chiang Mai return flight on the radar right now is £558, flying with Air China + Etihad Airways via one or more connections. It covers departures in September 2026, and every dated link below opens that exact LHR–CNX search on Skyscanner. Across 11 recorded checks it has ranged between £374 and £594. Our sampling points to September 2026 as the cheapest month to fly London to Chiang Mai.
Sample dates each links to live Skyscanner prices for those exact dates
✈️ 06/09/2026 – 21/09/2026 ✈️ 04/09/2026 – 18/09/2026 +£5 ✈️ 07/09/2026 – 25/09/2026 +£8 ✈️ 09/09/2026 – 21/09/2026 +£10 ✈️ 01/09/2026 – 14/09/2026 +£12 ✈️ 01/09/2026 – 13/09/2026 +£42 ✈️ 08/09/2026 – 22/09/2026 +£47 ✈️ 03/09/2026 – 20/09/2026 +£68 ✈️ 07/09/2026 – 24/09/2026 +£529 ✈️ 05/09/2026 – 18/09/2026 +£616Price history 11 checks recorded for this route
lowest seen £374 · typical £565 · highest £594 · now £558
London to Chiang Mai flights: common questions
How much is a flight from London to Chiang Mai?
The lowest return fare we currently track from London (LHR) to Chiang Mai (CNX) is £558. The typical price on this route is £565, so anything near £558 is worth booking quickly. Over 11 recorded checks we have seen it as low as £374 and as high as £594.
Which airline flies from London to Chiang Mai at this price?
This £558 fare is with Air China + Etihad Airways, with at least one connection. The live search lists every carrier serving the route, so you can compare schedules before booking.
Is there a direct flight from London to Chiang Mai?
This £558 fare includes at least one connection. If you need a non-stop London to Chiang Mai flight, open the live search and apply the direct filter there.
When is the cheapest time to fly from London to Chiang Mai?
Our price sampling points to September 2026 as the cheapest departure month on this route. The dated links on this page cover September 2026.
Is the £558 London to Chiang Mai fare still available?
We last confirmed this £558 fare against live Skyscanner availability 17 hours ago. Deal fares move within days, so the Check live price button re-runs the exact search and shows today's number rather than a cached one.
How do I book this London to Chiang Mai deal?
Pick a date pair above or press Check live price. That opens the exact LHR–CNX search on Skyscanner, where you book directly with the airline or agent. TravelFree does not sell tickets, adds no booking fee and does not mark the price up.
Every London to Chiang Mai price on this page comes from a real bookable quote and is re-checked automatically. TravelFree takes no commission from you and never marks a fare up.
Fares change fast. If this London to Chiang Mai price has gone by the time you search, try the days either side of the dates listed above – the same route is often still cheap within a day or two of the fare we found.