Cheap flights from Bucharest to Koh Samui

Cheapest current fares: $554 in August 2026 on connecting flights.

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Live fares · OTP → USM

Cheapest month-by-month fares

Lowest available fare per calendar month from Bucharest (OTP) to Koh Samui (USM). Refreshed daily.

Bucharest (OTP) → Koh Samui (USM)

  1. August 2026 $554

Frequently asked questions

  • What is the cheapest month to fly from Bucharest to Koh Samui?

    Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Bucharest (OTP) to Koh Samui (USM), with fares starting from $554.

  • What is the lowest current fare from OTP to USM?

    The lowest currently-listed fare from Bucharest (OTP) to Koh Samui (USM) is $554 on 2026-08-18.

  • Is there a direct flight from Bucharest to Koh Samui?

    There is currently no non-stop service from OTP to USM. Most travellers connect through a hub airport. See our route page for current stopover options.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.

Full route page: OTP → USM Cheapest month to fly to Koh Samui All flights from Bucharest All flights to Koh Samui Flights to Thailand Visa-free with Romania passport