Cheap flights from Koh Samui to Bangkok from $50 USM → BKK, DMK

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $103 to $163.

At $198, the cheapest return found recently is above that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

Yes. Among 0-night return fares leaving within 3 days of 17 Nov, 14 Nov – 14 Nov costs $137: $61 less than the cheapest found recently.

Bangkok Airways · Koh Samui Airport (USM) → Suvarnabhumi Airport (BKK) · out nonstop, back nonstop · found 4 days ago

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Every date we hold

263 fares on 55 departure dates

Which month looks cheapest?

November 2026 is the cheapest month — from $103.

Found recently, and the cheapest we hold

It is also the cheapest one-way we hold, of any age.

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $38 to $80.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

No. We hold one-way fares on 6 other departure dates within 3 days of 19 Nov, and none is cheaper.

Every date we hold

266 fares on 106 departure dates

Which month looks cheapest?

November 2026 is the cheapest month — from $50.

Return

Fares 30 to 59 days before departure were typically 7% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

The cheapest fares were 0 to 6 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Koh Samui to Bangkok?

The cheapest return found recently is $198 with Bangkok Airways, 17 Nov to 17 Nov, found 2 days ago. The cheapest return we hold, of any age, is $103 with Bangkok Airways, 14 Nov to 17 Nov, found 4 days ago. The cheapest return fare on each of 55 departure dates is usually $225 to $286.

How much is a one-way flight from Koh Samui to Bangkok?

The cheapest one-way found recently is $50 with Bangkok Airways, 19 Nov, found 2 days ago. The cheapest one-way fare on each of 106 departure dates is usually $90 to $137.

What is the cheapest month to fly from Koh Samui to Bangkok?

November 2026 is the cheapest month for a return, from $103, 14 Nov to 17 Nov, found 4 days ago. It is the cheapest month for a one-way too, from $50, 19 Nov, found 2 days ago.

Every date in November 2026

How far ahead should I book a flight from Koh Samui to Bangkok?

In 49 days of prices between 24 Sept and 11 Nov, return fares 30 to 59 days before departure were typically 7% lower than 0 to 6 days before departure. One-way fares were cheapest 0 to 6 days before departure.

Is there a direct flight from Koh Samui to Bangkok?

Yes, the cheapest nonstop return found recently is $198 with Bangkok Airways, 17 Nov to 17 Nov, found 2 days ago. The cheapest nonstop one-way found recently is $50 with Bangkok Airways, 19 Nov, found 2 days ago.

How long is the flight from Koh Samui to Bangkok?

The cheapest nonstop one-way found recently, with Bangkok Airways on 19 Nov, takes 1 h 35 min from Koh Samui Airport (USM) to Don Mueang International Airport (DMK).

Which airlines have the cheapest flights from Koh Samui to Bangkok?

Between 13 Nov and 1 Aug 2027, Bangkok Airways has the cheapest return on all 55 departure dates we hold. Between 13 Nov and 31 Oct 2027, Bangkok Airways has the cheapest one-way on all 106 departure dates we hold.