Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Australia to Ko Samui from $255

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
21 Jul — 28 Jul1
1 adult

Cheap flight deals from Australia to Ko Samui

Keep the following information in mind while searching for Australia to Ko Samui flight deals. Data was last updated 16 July 2025.

Round-trip from

$578

One-way from

$255

Popular in

December

Cheapest in

August

Average price

$1,060
16/9-24/9
  • 16/9-24/9
  • 3 total stops
  • 51h 00m total
  • Australia to Ko Samui
Search Deals
Scoot
  • Scoot
  • 27/10
  • 1 total stop
  • 11h 30m total
  • Australia to Ko Samui
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($323 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($64 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Australia to Ko Samui

Cheapest flights from Australia to Ko Samui
Explore the most affordable flight options available from Australia to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 July 2025.

Tue 16/921:55PER - USM
1 stop19h 50mMultiple Airlines
Wed 24/912:30USM - PER
2 stops31h 10mMultiple Airlines
Deal found 15/7$578
Fri 17/1021:55PER - USM
1 stop14h 15mScoot
Sat 25/1008:45USM - PER
1 stop10h 55mScoot
Deal found 15/7$624
Mon 25/813:00MEL - USM
1 stop30h 45mScoot
Sun 31/808:45USM - MEL
1 stop32h 30mScoot
Deal found 16/7$732
Fri 29/812:50SYD - USM
1 stop32h 40mScoot
Fri 5/919:25USM - SYD
1 stop21h 05mScoot
Deal found 15/7$748
Sat 15/1122:30MEL - USM
1 stop13h 30mMultiple Airlines
Mon 15/1215:05USM - MEL
2 stops26h 15mMultiple Airlines
Deal found 14/7$761
Thu 28/812:50SYD - USM
1 stop22h 00mMultiple Airlines
Thu 4/912:30USM - SYD
2 stops16h 20mMultiple Airlines
Deal found 14/7$763
Thu 28/808:35NTL - USM
2 stops36h 55mMultiple Airlines
Thu 4/919:25USM - NTL
2 stops45h 40mMultiple Airlines
Deal found 14/7$927
Thu 28/806:45CNS - USM
2 stops28h 05mMultiple Airlines
Thu 4/919:25USM - CNS
2 stops19h 50mMultiple Airlines
Deal found 14/7$940
Thu 28/816:40AVV - USM
2 stops18h 10mMultiple Airlines
Thu 4/919:25USM - AVV
2 stops21h 50mMultiple Airlines
Deal found 14/7$986
Fri 29/823:30BNE - USM
2 stops23h 55mMultiple Airlines
Fri 5/912:30USM - BNE
3 stops28h 25mMultiple Airlines
Deal found 15/7$1,092
Sat 9/809:15ADL - USM
2 stops34h 00mMultiple Airlines
Mon 11/808:00USM - ADL
3 stops34h 15mMultiple Airlines
Deal found 15/7$1,150
Thu 28/814:45BNE - USM
1 stop20h 05mSingapore Airlines
Thu 4/912:05USM - BNE
1 stop25h 35mSingapore Airlines
Deal found 13/7$1,416

Cheapflights Fare Finder

Customise your flight search to find flights from Australia to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 16 July 2025.
Use the filters below to find and compare flights from Australia to Ko Samui that are best for you.

Fly from

Australia

Fly to

Ko Samui

Route

Depart

Return

Price

PerthKo Samui

PER - USM

PERUSM

Perth

Tue 16/9

21:55-16:45

1 stop19h 50m

Ko Samui

Wed 24/9

12:30-20:40

2 stops31h 10m

$578

PerthKo Samui

PER - USM

PERUSM

Perth

Fri 17/10

21:55-11:10

1 stop14h 15m

Ko Samui

Sat 25/10

08:45-20:40

1 stop10h 55m

$624

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Mon 25/8

13:00-16:45

1 stop30h 45m

Ko Samui

Sun 31/8

08:45-20:15

1 stop32h 30m

$732

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 29/8

12:50-18:30

1 stop32h 40m

Ko Samui

Fri 5/9

19:25-19:30

1 stop21h 05m

$748

MelbourneKo Samui

MEL - USM

MELUSM

Melbourne

Sat 15/11

22:30-08:00

1 stop13h 30m

Ko Samui

Mon 15/12

15:05-21:20

2 stops26h 15m

$761

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 28/8

12:50-07:50

1 stop22h 00m

Ko Samui

Thu 4/9

12:30-07:50

2 stops16h 20m

$763

NewcastleKo Samui

NTL - USM

NTLUSM

Newcastle Williamtown

Thu 28/8

08:35-18:30

2 stops36h 55m

Ko Samui

Thu 4/9

19:25-20:05

2 stops45h 40m

$927

CairnsKo Samui

CNS - USM

CNSUSM

Cairns

Thu 28/8

06:45-07:50

2 stops28h 05m

Ko Samui

Thu 4/9

19:25-18:15

2 stops19h 50m

$940

MelbourneKo Samui

AVV - USM

AVVUSM

Melbourne Avalon

Thu 28/8

16:40-07:50

2 stops18h 10m

Ko Samui

Thu 4/9

19:25-20:15

2 stops21h 50m

$986

BrisbaneKo Samui

BNE - USM

BNEUSM

Brisbane

Fri 29/8

23:30-20:25

2 stops23h 55m

Ko Samui

Fri 5/9

12:30-19:55

3 stops28h 25m

$1,092

Flights are sorted by cheapest return flights first.

Deals found on 15/7

Showing 1-10 of 28 results
1
2
3

Best time to book a flight from Australia to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Australia with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Australia to Ko Samui

What is the cheapest month to book a flight from Australia to Ko Samui?

Currently, August is the cheapest month in which you can book a flight from Australia to Ko Samui (average of $533). Flying from Australia to Ko Samui in December is currently the most expensive (average of $1,051). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from AU to USM?

Find hourly flight availability from Australia to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 July 2025.

When flying from Australia to Ko Samui, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ko Samui. Reviews last updated 16 July 2025.
Get a feel of what it's like to fly with Singapore Airlines, Bangkok Airways, andCathay Pacific from Australia to Ko Samui by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very Good
1,327 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,July 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Singapore Airlines
8.1
Very Good
1,327 reviews
Singapore Airlines
8.1
Very Good
1,327 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,July 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Bangkok Airways
8.0
Very Good
111 reviews
Singapore Airlines
8.1
Very Good
1,327 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,July 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Cathay Pacific
7.6
Good
933 reviews
Singapore Airlines
8.1
Very Good
1,327 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,July 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Qantas Airways
7.5
Good
877 reviews
Singapore Airlines
8.1
Very Good
1,327 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,July 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Scoot
6.7
Okay
305 reviews
Singapore Airlines
8.1
Very Good
1,327 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,July 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

Related info for your journey

Find useful and relevant information for your journey from Australia to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ko Samui from Australia?

    If you book a flight to Ko Samui from Australia, you will be flying to Ko Samui, which is the city’s only airport. Ko Samui (USM) is located 3.3 km from the centre of Ko Samui.

  • What are the cheapest airlines to fly from Australia to Ko Samui one-way?

    To fly one-way, consider booking your trip with Scoot, which is currently one of the cheapest options available, starting at $255. Bangkok Airways flights start at $939 while deals on Singapore Airlines start at $979 one-way.

  • What are the most popular routes from Australia to Ko Samui?

    While some choose either Sydney Kingsford Smith - Ko Samui or Perth - Ko Samui, Melbourne - Ko Samui is the most popular route from Australia to Ko Samui.

  • Can I find deals for flights from Australia to Ko Samui that include hotel bookings?

    Yes. In addition to deals on Australia to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Australia to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Australia to Ko Samui.

  • Can I find deals for business class flights from Australia to Ko Samui?

    Yes. Cheapflights offers flight deals from Australia to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Australia to Ko Samui?

    Currently, August is the cheapest month in which you can book a flight from Australia to Ko Samui (average of $533). Flying from Australia to Ko Samui in December is currently the most expensive (average of $1,051). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Australia to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
Melbourne to Suvarnabhumi flights
Sydney to Suvarnabhumi flights
Melbourne to Don Mueang Intl flights
Sydney to Don Mueang Intl flights
Brisbane to Suvarnabhumi flights
Perth to Suvarnabhumi flights
Melbourne to Phuket City flights
Avalon to Suvarnabhumi flights
Sydney to Phuket City flights
Brisbane to Don Mueang Intl flights
Perth to Phuket City flights
Perth to Don Mueang Intl flights
Brisbane to Phuket City flights
Avalon to Phuket City flights
Sydney to Chiang Mai flights
Melbourne to Ko Samui flights
Adelaide to Suvarnabhumi flights
Sydney to Ko Samui flights
Adelaide to Phuket City flights
Cairns to Suvarnabhumi flights
Coolangatta to Suvarnabhumi flights
Adelaide to Don Mueang Intl flights
Perth to Ko Samui flights
Melbourne to Krabi flights
Melbourne to Chiang Mai flights
Brisbane to Chiang Mai flights
Sydney to Krabi flights
Canberra to Phuket City flights
Darwin to Suvarnabhumi flights
Cairns to Phuket City flights
Brisbane to Ko Samui flights
Perth to Chiang Mai flights
Canberra to Suvarnabhumi flights
Coolangatta to Don Mueang Intl flights
Perth to Krabi flights
Brisbane to Krabi flights
Adelaide to Ko Samui flights
Cairns to Don Mueang Intl flights
Darwin to Phuket City flights
Maroochydore to Suvarnabhumi flights
Coolangatta to Phuket City flights
Townsville to Suvarnabhumi flights
Alice Springs to Suvarnabhumi flights
Canberra to Krabi flights
Adelaide to Krabi flights
Hobart to Suvarnabhumi flights

Top 5 airlines flying from Australia to Ko Samui

Discover the top 5 airlines that operate flights from Australia to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 16 July 2025.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$515Average$830FlexibilityNo cancel feeOn-timeN/A
Search Scoot flights
Singapore AirlinesCheapest$823Average$1,313FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Qantas AirwaysCheapest$1,071Average$2,068FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Bangkok AirwaysCheapest$1,115Average$1,295FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Thai AirwaysCheapest$1,118Average$1,406FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Australia to Ko Samui?

Cheapflights helps you search for flights from Australia to Ko Samui via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Australia to Ko Samui?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ko Samui from Australia.

Can Cheapflights find flights from Australia to Ko Samui with no change fees?

Need flexible booking options for your flight to Ko Samui from Australia? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Australia to Ko Samui become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights