Chiang Mai (CNX) to Koh Samui (USM) flights
One airline flies nonstop from Chiang Mai (CNX) to Koh Samui (USM): Bangkok Airways. The two airports are 641 miles (1,032 km) apart. There are also 5 ways to fly it with one stop, through Bangkok, Bangkok and Utapao and more.
Airlines flying nonstop from CNX to USM
- Bangkok AirwaysNot in an alliance · bookable with 3 programsWho books it
Book CNX to USM with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air France-KLM Flying BlueBooks Bangkok Airways
- Emirates SkywardsBooks Bangkok Airways
- Singapore Airlines KrisFlyerBooks Bangkok Airways
CNX to USM with one stop
5 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Bangkok (DMK)Nok Air, Thai AirAsia and 1 more, then Bangkok AirwaysDD
- Via Bangkok (BKK)Bangkok Airways the whole way
VZ+1 - Via Utapao (UTP)Thai Lion Air, then Bangkok Airways
- Via Krabi (KBV)Bangkok Airways the whole way
- Via Phuket (HKT)Bangkok Airways the whole wayVZ
CNX to USM: common questions
Which airlines fly nonstop from CNX to USM?
Bangkok Airways flies nonstop from Chiang Mai (CNX) to Koh Samui (USM).
How far is Chiang Mai from Koh Samui by plane?
Chiang Mai (CNX) and Koh Samui (USM) are 641 miles (1,032 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book CNX to USM award flights?
3 programs can book at least one of the nonstop airlines: Air France-KLM Flying Blue, Emirates Skywards and Singapore Airlines KrisFlyer. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does CNX to USM cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for CNX to USM with taxes and fees.
Where can I connect between Chiang Mai and Koh Samui?
The most direct connections are through Bangkok (DMK), Bangkok (BKK), Utapao (UTP), Krabi (KBV) and Phuket (HKT). On 3 of them the same airline flies both flights, for example Bangkok Airways through Bangkok.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.