This page does one job: keep an eye on return fares from London to Chiang Mai. You get the cheapest price we have on record, the exact dates it was available on, and how that sits against what the route normally costs.
Prices are re-checked against Skyscanner automatically, and every one shows when it was last confirmed, so nothing here is older than it looks. Not flying from London? We track 26 other departure cities for Chiang Mai, listed at the foot of this page.
London → Chiang Mai
for 6 Sep – 20 Sep 2026
✓ live-checked 4 hours ago
Check live price on Skyscanner →Price history 22 checks recorded for this route
lowest seen £374 · typical £558 · highest £594 · now £556
The cheapest London to Chiang Mai return flight on the radar right now is £556, 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 22 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.
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 £556. The typical price on this route is £558, so anything near £556 is worth booking quickly. Over 22 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 £556 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 £556 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 £556 London to Chiang Mai fare still available?
We last confirmed this £556 fare against live Skyscanner availability 4 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.
Prices like this tend to vanish fast. If it has gone when you look, try the days either side of the dates above, since London to Chiang Mai is often still worth booking within a day or two of the fare we found.