Look for other cheap flights to Ko Samui

$401 Cheap flights to Ko Samui

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Ko Samui departing on 22/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Australia to Ko Samui

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
04:45 - 18:00
PER
-
USM
14h 15m
2 stops
Multiple Airlines Logo
11:25 - 03:45
USM
-
PER
15h 20m
2 stops
$573Multiple Airlines
Tue, 8 Sep - Fri, 18 Sep
Multiple Airlines Logo
07:30 - 18:00
PER
-
USM
11h 30m
1 stop
Multiple Airlines Logo
12:30 - 03:45
USM
-
PER
14h 15m
2 stops
$677Multiple Airlines
Tue, 8 Sep - Fri, 18 Sep
Multiple Airlines Logo
05:35 - 14:40
PER
-
USM
34h 05m
2 stops
Multiple Airlines Logo
11:25 - 04:20
USM
-
PER
15h 55m
2 stops
$684Multiple Airlines
Sat, 5 Sep - Sat, 19 Sep
Scoot Logo
20:05 - 08:00
SYD
-
USM
15h 55m
1 stop
Scoot Logo
08:55 - 18:50
USM
-
SYD
29h 55m
1 stop
$763Scoot
Wed, 28 Oct - Wed, 11 Nov
Scoot Logo
21:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Scoot Logo
19:45 - 18:50
USM
-
SYD
19h 05m
1 stop
$788Scoot
Tue, 20 Oct - Tue, 27 Oct
Scoot Logo
21:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Scoot Logo
08:55 - 18:50
USM
-
SYD
29h 55m
1 stop
$803Scoot
Tue, 20 Oct - Mon, 26 Oct
Scoot Logo
22:35 - 17:10
MEL
-
USM
22h 35m
1 stop
Scoot Logo
12:00 - 21:20
USM
-
MEL
29h 20m
1 stop
$823Scoot
Mon, 16 Nov - Mon, 23 Nov
Qantas Airways Logo
08:10 - 21:05
AVV
-
USM
16h 55m
2 stops
Qantas Airways Logo
13:55 - 20:20
USM
-
AVV
26h 25m
2 stops
$9,675Qantas Airways
Tue, 17 Nov - Thu, 19 Nov
Qantas Airways Logo
06:00 - 20:15
AVV
-
USM
18h 15m
2 stops
Qantas Airways Logo
13:25 - 23:15
USM
-
AVV
29h 50m
2 stops
$9,678Qantas Airways
Tue, 17 Nov - Thu, 19 Nov
Qantas Airways Logo
06:00 - 21:05
AVV
-
USM
19h 05m
2 stops
Qantas Airways Logo
14:05 - 14:05
USM
-
AVV
20h 00m
2 stops
$9,685Qantas Airways
Tue, 17 Nov - Thu, 19 Nov

momondo Fare Finder

 
Locate flights to Ko Samui that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 78,305 searches and data was last updated on 11 June 2026.
Use the filters below to find and compare flights to Ko Samui that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

PerthKo Samui

PER - USM

PERUSM

Perth

Tue 8/9

04:45-18:00

2 stops14h 15m

Ko Samui

Fri 18/9

11:25-03:45

2 stops15h 20m

$573
Fastest return journey

PerthKo Samui

PER - USM

PERUSM

Perth

Tue 8/9

07:30-18:00

1 stop11h 30m

Ko Samui

Fri 18/9

12:30-03:45

2 stops14h 15m

$677

PerthKo Samui

PER - USM

PERUSM

Perth

Sat 5/9

05:35-14:40

2 stops34h 05m

Ko Samui

Sat 19/9

11:25-04:20

2 stops15h 55m

$684

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 28/10

20:05-08:00

1 stop15h 55m

Ko Samui

Wed 11/11

08:55-18:50

1 stop29h 55m

$763

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 20/10

21:35-18:50

1 stop25h 15m

Ko Samui

Tue 27/10

19:45-18:50

1 stop19h 05m

$788

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 20/10

21:35-18:50

1 stop25h 15m

Ko Samui

Mon 26/10

08:55-18:50

1 stop29h 55m

$803

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Mon 16/11

22:35-17:10

1 stop22h 35m

Ko Samui

Mon 23/11

12:00-21:20

1 stop29h 20m

$823

MelbourneKo Samui

AVV - USM

AVVUSM

Melbourne Avalon

Tue 17/11

08:10-21:05

2 stops16h 55m

Ko Samui

Thu 19/11

13:55-20:20

2 stops26h 25m

$9,675

MelbourneKo Samui

AVV - USM

AVVUSM

Melbourne Avalon

Tue 17/11

06:00-20:15

2 stops18h 15m

Ko Samui

Thu 19/11

13:25-23:15

2 stops29h 50m

$9,678

MelbourneKo Samui

AVV - USM

AVVUSM

Melbourne Avalon

Tue 17/11

06:00-21:05

2 stops19h 05m

Ko Samui

Thu 19/11

14:05-14:05

2 stops20h 00m

$9,685

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

See travel insights to Ko Samui from

Ko Samui flights insights and trends

Explore insights for your Ko Samui flight to craft the best travel plan

What is the cheapest month to fly to Ko Samui?

The month of October is, on average, the cheapest month to fly to Ko Samui from Australia, with most prices found around $821. If you aren’t able to travel during the month of October, then book flights to Ko Samui from Australia during March instead. Flights to Ko Samui in March, while not as cheap as those in October, still average around $835.

How far in advance should I book a flight to Ko Samui?

You are more likely to see cheaper flights to Ko Samui from Australia when booking weeks ahead of your departure date. In general, you can expect to find flights to Ko Samui for around $1,081 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ko Samui from Australia for as low as $911 on momondo.

Cheapest flights to Ko Samui

Find the cheapest flights to Ko Samui from your nearest city or airport
CHEAPEST MONTH TO FLY TO KO SAMUI FROM SYDNEYOctober25% cheaperFlying from Sydney to Ko Samui costs on average just $821 in October
MOST EXPENSIVE MONTH TO FLY TO KO SAMUI FROM SYDNEYDecember38% more expensiveIt costs about $1,504 for flights to Ko Samui from Sydney in December
MOST POPULAR MONTH TO FLY TO KO SAMUI FROM SYDNEYDecember552% more users visitedMore momondo users searched in flights to Ko Samui from Sydney in December than any other month

Cheap Ko Samui flight deals and tips

Summary info about Ko Samui flight prices, duration and airlines

Best One-Way Price

$401

Best Round-Trip Price

$573

Fastest flight time

14h 15m

Popular in

December
The best one-way flight price to Ko Samui from Australia in the last 5 days is $401 (Perth to Ko Samui).
The best round-trip flight price to Ko Samui from Australia in the last 5 days is $573 (Perth to Ko Samui).
The fastest flight to Ko Samui from Australia takes 14h 15m (Perth to Ko Samui).
December has the highest demand for flights to Ko Samui, with a 14% price increase on average.

Frequently asked questions about flying to Ko Samui

What is there to do in Ko Samui when it’s raining?

If you are planning a flight to Ko Samui and are looking to avoid the rain, you should avoid traveling during the months of January, May, and October. These months will typically see 5.1 inches or more of rain, meaning that rain is likely. If you do run into rain while in Ko Samui, there are still things to do and ways to enjoy your trip. Shopping centres like Fishermans Village are very popular destinations for those visiting the Ko Samui area. Fishermans Village is a great place to go if you’re looking to spend some time inside.

When is the best time to plan a beach trip to Ko Samui?

The month of February, March, or April is often the best time to visit Ko Samui to go to the beach due to the weather. Lamai Beach is the most often visited beach in the area. Another popular beach in the area is Chaweng Beach.

How far in advance should I book a flight to Ko Samui?

We recommend purchasing flights from Australia to Ko Samui 59 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to Ko Samui for $1,081. Don’t hesitate to check prices now though, because momondo users recently found tickets for as low as $657.

Is there an alternative airport near Ko Samui?

Surat Thani Airport, Nakhon Si Thammarat Airport or Chumphon Airport can be an alternative airport used for travel to Ko Samui.

Is there a cheaper alternative to flying into Ko Samui?

With an average price of $101 per person, Surat Thani Airport is the cheapest airport to fly into when planning your trip to Ko Samui. This price can fluctuate based on where you are flying from. momondo’s Airport-to-Airport Pricing Tool can help users find the best prices.

What is the absolute cheapest flight to Ko Samui?

The best price found on momondo to Ko Samui was $67/pp from Bangkok, which is 40% cheaper than the average flight price to Ko Samui. To find the cheapest price to Ko Samui from your area, use momondo’s Airport-to-Airport Pricing Tool.

When did momondo last update prices for flights to Ko Samui Airport?

Prices for flights to Ko Samui Airport are updated daily.

How many operators does momondo search for flights to Ko Samui Airport?

How old do you have to be to fly to Ko Samui Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to Ko Samui Airport.

What documentation or ID do you need to fly to Ko Samui Airport?

The travel and health documents you'll need for your trip to Ko Samui Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Ko Samui Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan
Khanom

Why use momondo?

Why should I use momondo to find a flight deal to Ko Samui?

Finding the right flight to Ko Samui is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. These options can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ko Samui quick and easy, saving you time and money.

Can I find flights to Ko Samui with flexible booking policies on momondo?

All flight searches to Ko Samui on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights to Ko Samui?

Once you have performed a search for flights to Ko Samui, momondo helps you find the right flight by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight to Ko Samui right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ko Samui flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Ko Samui trip

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1 adult
Sat 11/7
Sat 18/7

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Popular routes according to searches in the past day on momondo