- Cheapest from
- Sydney
- Cheapest month
- January
- Direct flights
- Not recently
$401 · Scoot
January 2027
Usually 1+ stop
Flights to Koh Samui from each city
Lowest one-way fare per person over the coming months, in AUD. Choose a city to see every month and date.
Plan the rest of your trip to Koh Samui
Where to stay, what to do and getting around, from our travel partners.
Getting around
About flights to Koh Samui
We compare the lowest fares to Koh Samui (USM) from 2 cities across Australia and New Zealand, using prices travellers found in the last 48 hours. Right now the cheapest way there is from Sydney, from $401 one way, and January 2027 is looking like the cheapest month to go.
Fares move quickly, so if you spot a good price it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
What's the cheapest city to fly to Koh Samui from?
Sydney currently has the cheapest fares, from $401 one way in January 2027. Next cheapest: Melbourne ($518).
When is the cheapest time to fly to Koh Samui?
January 2027 has the lowest fares from the most cities right now. Open a city's route page to see every month.
Can I fly direct to Koh Samui?
We haven't seen direct fares from Australia and New Zealand recently, so most trips include at least one stop.