Bangkok AirwaysDepart07:00
Sun, Nov 8USM → CEI
2h 40m · 1 stop
$137one way, per person
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- Cheapest fare
- $137
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 2h 40m
Bangkok Airways · Sun, Nov 8
from $137
Usually 1+ stop
1,150 km
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Cheapest month to fly from Koh Samui to Chiang Rai
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
Bangkok AirwaysBangkok AirwaysDepart06:45
Fri, Nov 6USM → CEI
3h 00m · 1 stop
$184one way, per person
View deal
Plan the rest of your trip to Chiang Rai
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About flights from Koh Samui to Chiang Rai
Koh Samui (USM) and Chiang Rai (CEI) are about 1,150 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 2h 40m. Over the next few months, one-way fares start from $137, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Koh Samui to Chiang Rai?
The cheapest one-way fare we've seen recently is $137 with Bangkok Airways, departing Sunday, November 8, 2026. Over the coming months, the lowest fare in each month ranges from $137 to $197.
What is the cheapest month to fly from Koh Samui to Chiang Rai?
November 2026 currently has the lowest fares, from $137 one way.
Are there direct flights from Koh Samui to Chiang Rai?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Koh Samui to Chiang Rai?
The quickest journey we've seen takes about 2h 40m. Koh Samui and Chiang Rai are around 1,150 km apart.
Which airlines fly from Koh Samui to Chiang Rai?
Recent fares on this route were with Bangkok Airways.
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