Look for other cheap flights to Ko Samui

$321 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 15/10. 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

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Find the cheapest flights from Australia to Ko Samui

Cheap return flights

Scoot Logo
05:35 - 18:50PER-USM
14h 15m1 stop
Scoot Logo
08:55 - 04:20USM-PER
18h 25m1 stop
$497Scoot
Find Deal
Mon, 27 Oct - Wed, 5 Nov
Scoot Logo
21:55 - 16:45PER-USM
19h 50m1 stop
Scoot Logo
08:55 - 04:20USM-PER
18h 25m1 stop
$498Scoot
Find Deal
Mon, 13 Oct - Sun, 26 Oct
Scoot Logo
21:55 - 07:50PER-USM
10h 55m1 stop
Scoot Logo
08:55 - 04:20USM-PER
18h 25m1 stop
$541Scoot
Find Deal
Thu, 23 Oct - Thu, 30 Oct
 Logo
05:35 - 18:50PER-USM
14h 15m1 stop
 Logo
11:10 - 04:00USM-PER
15h 50m2 stops
Mon, 27 Oct - Wed, 5 Nov
 Logo
21:55 - 07:50PER-USM
10h 55m1 stop
 Logo
07:00 - 16:35USM-PER
32h 35m2 stops
Mon, 13 Oct - Sun, 26 Oct
Singapore Airlines Logo
18:35 - 08:00CNS-USM
16h 25m1 stop
Singapore Airlines Logo
08:55 - 17:20USM-CNS
29h 25m1 stop
$1,278Singapore Airlines
Find Deal
Sun, 1 Mar - Sun, 8 Mar
Singapore Airlines Logo
18:10 - 11:00BNE-USM
19h 50m1 stop
Singapore Airlines Logo
12:00 - 16:55USM-BNE
25h 55m1 stop
$1,361Singapore Airlines
Find Deal
Sat, 1 Nov - Mon, 10 Nov
Qantas Airways Logo
12:35 - 18:15CNS-USM
56h 40m2 stops
Qantas Airways Logo
16:25 - 10:45USM-CNS
39h 20m2 stops
$3,006Qantas Airways
Find Deal
Mon, 29 Dec - Mon, 12 Jan
Qantas Airways Logo
17:00 - 21:05CNS-USM
55h 05m2 stops
Qantas Airways Logo
16:25 - 10:45USM-CNS
39h 20m2 stops
$3,097Qantas Airways
Find Deal
Mon, 29 Dec - Mon, 12 Jan
Delta Logo
12:40 - 21:25AVV-USM
12h 45mdirect
Delta Logo
10:35 - 19:40USM-AVV
5h 05mdirect
$11,594Delta
Find Deal
Fri, 26 Dec - Fri, 2 Jan

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 9 September 2025.
Use the filters below to find and compare flights to Ko Samui that are best for you.

Fly from

Route

Depart

Return

Price

PerthKo Samui

PER - USM

PERUSM

Perth

Mon 27/10

05:35-18:50

1 stop14h 15m

Ko Samui

Wed 5/11

08:55-04:20

1 stop18h 25m

$497

PerthKo Samui

PER - USM

PERUSM

Perth

Mon 13/10

21:55-16:45

1 stop19h 50m

Ko Samui

Sun 26/10

08:55-04:20

1 stop18h 25m

$498

PerthKo Samui

PER - USM

PERUSM

Perth

Thu 23/10

21:55-07:50

1 stop10h 55m

Ko Samui

Thu 30/10

08:55-04:20

1 stop18h 25m

$541

PerthKo Samui

PER - USM

PERUSM

Perth

Mon 27/10

05:35-18:50

1 stop14h 15m

Ko Samui

Wed 5/11

11:10-04:00

2 stops15h 50m

$638

PerthKo Samui

PER - USM

PERUSM

Perth

Mon 13/10

21:55-07:50

1 stop10h 55m

Ko Samui

Sun 26/10

07:00-16:35

2 stops32h 35m

$655

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Sun 1/3

18:35-08:00

1 stop16h 25m

Ko Samui

Sun 8/3

08:55-17:20

1 stop29h 25m

$1,278

BrisbaneKo Samui

BNE - USM

BNEUSM

Brisbane

Sat 1/11

18:10-11:00

1 stop19h 50m

Ko Samui

Mon 10/11

12:00-16:55

1 stop25h 55m

$1,361

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 29/12

12:35-18:15

2 stops56h 40m

Ko Samui

Mon 12/1

16:25-10:45

2 stops39h 20m

$3,006

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Mon 29/12

17:00-21:05

2 stops55h 05m

Ko Samui

Mon 12/1

16:25-10:45

2 stops39h 20m

$3,097

MelbourneKo Samui

AVV - USM

AVVUSM

Melbourne Avalon

Fri 26/12

12:40-21:25

Nonstop12h 45m

Ko Samui

Fri 2/1

10:35-19:40

Nonstop5h 05m

$11,594

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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 August is, on average, the cheapest month to fly to Ko Samui from Australia, with most prices found around $895. If you aren’t able to travel during the month of August, then book flights to Ko Samui from Australia during March instead. Flights to Ko Samui in March, while not as cheap as those in August, still average around $944.

What is the cheapest day to depart on your flight to Ko Samui?

According to our data, Tuesday is the cheapest day to fly to Ko Samui from Australia. The lowest ticket price found for a Tuesday departure recently was $1,119. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Australia to Ko Samui for around $1,285.

What is the cheapest time of day to depart on your flight to Ko Samui?

Our data shows that the cheapest Australia to Ko Samui flights are usually those with departure times in the evening. Our users have found flights to Ko Samui in the evening for as low as $942. Flights in the morning are often more expensive, with an average ticket price of $1,318.

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 $1,116 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 $930 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 SYDNEYAugust20% cheaperFlying from Sydney to Ko Samui costs on average just $895 in August
MOST EXPENSIVE MONTH TO FLY TO KO SAMUI FROM SYDNEYDecember40% more expensiveIt costs about $1,565 for flights to Ko Samui from Sydney in December
MOST POPULAR MONTH TO FLY TO KO SAMUI FROM SYDNEYOctober602% more users visitedMore momondo users searched in flights to Ko Samui from Sydney in October 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

$321

Best Round-Trip Price

$497

Fastest flight time

13h 50m

Popular in

January
The best one-way flight price to Ko Samui from Australia in the last 72 hours is $321 (Perth to Ko Samui).
The best round-trip flight price to Ko Samui from Australia in the last 72 hours is $497 (Perth to Ko Samui).
The fastest flight to Ko Samui from Australia takes 13h 50m (Perth to Ko Samui).
January has the highest demand for flights to Ko Samui, with a 11% 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. Chaweng Beach is the most often visited beach in the area. Another popular beach in the area is Lamai Beach.

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

We recommend purchasing flights from Australia to Ko Samui 48 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 $1,116.

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 $78 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 $58/pp from Bangkok, which is 49% 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 Pha Ngan
Ko Tao
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
Thu 9/10
Thu 16/10

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Popular routes according to searches in the past day on momondo