⚡ Fare recorded April 25, 2026 · Prices change daily

Bangkok to Koh Samui flights

Bangkok (DMK) to Koh Samui (USM): 304 miles (489 km) great-circle, about 1h 05m nonstop by our estimate. Cheapest fare observed: $193 round-trip on Bangkok Airways, nonstop, departing June 6, 2026.

PGBangkok AirwaysPG455
Depart
DMK
Bangkok, Thailand
18:15
2026-06-06
✈
Arrive
USM
Koh Samui, Thailand
Returns 06:55
2026-06-12
Stops
non-stop
Distance
304 mi
Est. nonstop time
1h 05m
Trip type
Round-trip
$193
Round-trip · per person
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About this flight

When did the cheapest Bangkok to Koh Samui fare fly?

$193 round-trip, Bangkok Airways PG455, departing 2026-06-06 at 18:15, returning 2026-06-12. The recorded itinerary left on a Saturday, returning on a Friday 6 nights later; the fare was observed 42 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.

Route facts

How far is Bangkok from Koh Samui?

  • Distance: 304 miles (489 km) great-circle, heading south.
  • Estimated nonstop flight time: about 1h 05m.
  • Departure airport: Don Mueang International Airport (DMK), Bangkok, Thailand, UTC+7 on June 6, 2026.
  • Arrival: Samui Airport (USM), Thailand, UTC+7 on June 6, 2026.
  • Time difference: none on the recorded date.
  • Route type: domestic, within Thailand.
  • Arrival airport elevation: 64 ft.
  • Recorded itinerary: Bangkok Airways PG455, non-stop, round-trip, 6 days between departure and return.
Fare comparison

How does the Bangkok to Koh Samui fare compare with other routes from DMK?

At $193, it ranked 9th of the 30 round-trip fares we recorded from DMK (median $322). That is 63.5 cents per great-circle mile (round-trip price over one-way distance), above the DMK median of 25.1 cents across 30 round-trip routes.

Routes from DMK of similar length: Surat Thani (345 mi) at $79 and Phu Quoc (345 mi) at $138.

DMK to USM is the only one of 30 DMK routes where Bangkok Airways priced cheapest. It is the 30th longest of the 30 routes we track from DMK.

Other ways in

What did other cities pay to fly to Koh Samui?

Of 5 departure airports with a fare to Koh Samui, Bangkok (DMK) ranked 3rd at $193. Lowest: $171 from Phuket (HKT); highest: $413 from Bali (DPS); 4 nonstop. Cheapest-fare airlines (routes): Bangkok Airways (3), AirAsia (1) and Scoot (1).

Sources

Where do these numbers come from?

Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Bangkok, Asia/Bangkok; flight time is our estimate.

FAQ

Bangkok to Koh Samui flight questions

How far is Bangkok from Koh Samui by plane?

+
Bangkok is about 304 miles (489 km) from Koh Samui on a great-circle line from Don Mueang International Airport (DMK) to Samui Airport (USM), heading south. It is the 30th longest of the 30 routes we track from DMK. The recorded itinerary was nonstop.

How long is the flight from Bangkok to Koh Samui?

+
About 1h 05m nonstop by our estimate for 304 miles (500 mph cruise plus 30 minutes, not a timetable). The recorded Bangkok Airways fare was nonstop. 5 airports in our feed had a fare to Koh Samui; this one ranked 3rd, and 4 of the 5 were nonstop.

What is the time difference between Bangkok and Koh Samui?

+
On June 6, 2026, Bangkok was on UTC+7 (Asia/Bangkok) and Koh Samui on UTC+7 (Asia/Bangkok), so the two cities shared the same clock time: noon in Bangkok was 12:00 in Koh Samui. Neither Asia/Bangkok nor Asia/Bangkok shifts for daylight saving, so the gap holds all year.

How much is a flight from Bangkok to Koh Samui?

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As observed on April 25, 2026: $193 per person round-trip on Bangkok Airways flight PG455, departing June 6, 2026, returning June 12, 2026, nonstop. At $193, it ranked 9th of the 30 round-trip fares we recorded from DMK (median $322). That is 63.5 cents per great-circle mile (round-trip price over one-way distance), above the DMK median of 25.1 cents across 30 round-trip routes. Prices change daily, so check the live fare.

Is there a nonstop flight from Bangkok to Koh Samui?

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Yes, the cheapest recorded fare was a nonstop Bangkok Airways flight, PG455, on June 6, 2026. Into Koh Samui, 4 of the 5 recorded fares were nonstop. From DMK, 16 of 30 were. Routes from DMK of similar length: Surat Thani (345 mi) at $79 and Phu Quoc (345 mi) at $138.

Which airports serve flights from Bangkok to Koh Samui?

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It departs Don Mueang International Airport (DMK) in Bangkok, Thailand, and arrives at Samui Airport (USM) in Koh Samui, Thailand. A domestic Thailand flight. DMK to USM is the only one of 30 DMK routes where Bangkok Airways priced cheapest.

Where else near Koh Samui can you fly from Bangkok?

Surat Thani (URT) $79Krabi (KBV) $92Phuket (HKT) $72Phu Quoc (PQC) $138Ho Chi Minh City (SGN) $209Kuala Lumpur (KUL) $178All flights from Bangkok →

Other cities with flights to Koh Samui

From Phuket (HKT) $171From Singapore (SIN) $369From Bali (DPS) $413

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