Cheap flights from Koh Samui to Sydney

One-way fares from $299 · USM → SYD · prices found by travellers in the last 48 hours

Compare all dates Sydney → Koh Samui
Cheapest fare
$299

Scoot · Tue, Dec 8

Cheapest month
December

from $299

Direct flights
Not recently

Usually 1+ stop

Quickest trip
9h 45m

7,240 km

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Cheapest month to fly from Koh Samui to Sydney

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 $309
  2. December 2026 Cheapest $299
  3. January 2027 $585
  4. February 2027 $452

Cheapest dates in December 2026

The lowest fares we've seen for each day, cheapest first.

Scoot
Depart08:55 Tue, Dec 8USM → SYD 9h 45m · 1 stop
$299one way, per person
View deal
Scoot
Depart08:55 Thu, Dec 17USM → SYD 10h 50m · 2 stops
$381one way, per person
View deal
See every date in December 2026 →

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About flights from Koh Samui to Sydney

Koh Samui (USM) and Sydney (SYD) are about 7,240 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 9h 45m. Over the next few months, one-way fares start from $299, and December 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 Sydney?

The cheapest one-way fare we've seen recently is $299 with Scoot, departing Tuesday, December 8, 2026. Over the coming months, the lowest fare in each month ranges from $299 to $585.

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

December 2026 currently has the lowest fares, from $299 one way.

Are there direct flights from Koh Samui to Sydney?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Koh Samui to Sydney?

The quickest journey we've seen takes about 9h 45m. Koh Samui and Sydney are around 7,240 km apart.

Which airlines fly from Koh Samui to Sydney?

Recent fares on this route were with Scoot and Bangkok Airways.

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