Route guide

Chiang Mai to Ko Samui (CNX-USM): Nonstop Upgrade & Award Space

Bangkok Airways flies nonstop between Chiang Mai (CNX) and Ko Samui (USM), roughly 14 times a week. With Bangkok Airways operating this route so often, premium seats still turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every CNX to USM departure, so you know which flights have space before you book.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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14
Nonstop flights a week
641 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every CNX to USM departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Chiang Mai to Ko Samui to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each CNX to USM departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See CNX to USM on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Chiang Mai to Ko Samui nonstop

Carriers operating CNX to USM nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • Bangkok Airways
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Frequently asked questions about CNX to USM

How far is Ko Samui from Chiang Mai?
CNX to USM covers about 641 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from CNX to USM?
Bangkok Airways is currently the only airline flying CNX to USM nonstop. 2LNR tracks confirmed upgrade and award space on every Bangkok Airways departure.
How many flights a week are there from CNX to USM?
About 14 nonstop flights a week run between Chiang Mai and Ko Samui in the current schedule, operated by Bangkok Airways. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on CNX to USM?
Open the CNX to USM calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Chiang Mai to Ko Samui route, and 2LNR will notify you when space opens. It's free to start.

Never miss CNX to USM upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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