Mae Hong Son has no train — fly from Chiang Mai into the tiny MHS airport in about 35 minutes (fastest, but limited and haze-prone), or drive / take a van the northern route via Pai (the 1,864-curve loop) or the southern route via Mae Sariang. Compare cost, time and comfort, with motion-sickness tips before you set off.
The first thing to get straight before you plan anything: Mae Hong Son has no train line, and almost everyone starts from Chiang Mai. From there you have two very different main options. The first is to fly from Chiang Mai Airport (CNX) into Mae Hong Son Airport (MHS) — a small turboprop hop of just about 35 minutes, the fastest and most comfortable way, though flights are limited, fares vary and it's weather-sensitive. The second is to drive or take a bus, which is part of the appeal here — the mountain road that forms the famous "Mae Hong Son loop" with its roughly 1,864 curves. You can take either the northern route via Pai or the southern route via Mae Sariang. Before you book, decide whether you value the time saved or the journey itself, then pick the option below that matches you.
Mae Hong Son Airport (MHS) is a small mountain airport with turboprop flights from Chiang Mai (CNX), about 35 minutes in the air — cutting out the 6–8 hours of mountain curves entirely. It's the fastest and most comfortable route, but there are only a few flights a day, fares vary with the season, and they can be delayed or cancelled in the haze season.
The road from Chiang Mai is an experience in itself, part of the 1,864-curve Mae Hong Son loop. You choose between two routes: the northern one via Pai (shorter at ~245 km but the twistiest) or the southern one via Mae Sariang (longer at ~350 km but with fewer tight bends). Either way it's about 6–8 hours. Carsick travellers should prepare, but you get the scenery and towns along the way.
Mae Hong Son has no train, so the main options are flying from Chiang Mai, or driving / taking a bus via Pai or Mae Sariang — read this before you book.
People often ask whether there's a train to Mae Hong Son and how often flights get cancelled, so let's be clear on both.
Mae Hong Son is a mountain province with no railway at all. Chiang Mai is the only practical gateway — whether you arrive by train or plane from Bangkok, you'll still continue by flight to MHS or by road from Chiang Mai. And because the airport sits in a valley, weather and haze genuinely affect the flights. Here's the straight version of both.
There's no train to Mae Hong Son; the nearest station is Chiang Mai. If you like rail travel, take the Bangkok–Chiang Mai sleeper (leaves in the evening, gets in around dawn, saving a night's hotel), then continue by flight to MHS or by road. Think of the train as the Bangkok–Chiang Mai leg, with the flight or drive finishing the trip to Mae Hong Son.
Mae Hong Son's airport handles small turboprops in a valley. Most of the year flights run to schedule, but in the burning/haze season (roughly Mar–Apr), when visibility drops from forest-fire and agricultural smoke, delays and cancellations become more likely. Fly in the morning, book a changeable ticket, and keep a road backup.
Whether you fly or take the train from Bangkok, the leg into Mae Hong Son is always a flight to MHS or a drive from Chiang Mai (the Pai route ~245 km or the Mae Sariang route ~350 km). Plan your connection time carefully, especially if you reach Chiang Mai in the evening.
If you're stitching together a trip from Bangkok up north, look at the bigger picture of getting around Thailand (trains, domestic flights, buses) and then plan the Chiang Mai–Mae Hong Son leg to connect smoothly.
Mae Hong Son is a remote mountain province with little public transport and sights spread far apart — a world away from a big city with Grab on tap. Sort these four things first and the trip runs smoothly from the moment you leave Chiang Mai.
Both the Pai and Mae Sariang routes are mountain roads. If you're going by road and get carsick easily, take a travel-sickness tablet about 30 minutes before departure, grab a seat near the front, look far ahead at the horizon, skip a heavy meal, and break the trip up. If you're very prone to it, flying from Chiang Mai is by far the easiest on the stomach.
CNX–MHS flights are limited to a few a day, and bus departures are far less frequent than the Chiang Mai–Pai run. Book ahead, especially in the cool season, and if you're flying in the haze season (Mar–Apr), keep a road option as a backup in case your flight is cancelled.
Once you arrive, Grab is essentially unavailable, and sights like Pang Ung, Ban Rak Thai, Tham Lod and the Su Tong Pae bamboo bridge are out of town and need a vehicle. Most people rent a car or motorbike, or hire a driver / join a tour. Think this through before you arrive.
Cool-season nights (Nov–Feb) up in the mountains get genuinely cold, especially at Pang Ung at dawn, so pack a warm jacket. Set up an eSIM to use from the moment you land — coverage is fine in town but patchy at some hill spots — and book your stay ahead, especially in the cool season when rooms sell out fast.