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$369+ Cheap flights to Ko Samui

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 26/4. Fares are subject to change and may not be available on all flights or dates of travel.
— USM
10 May — 17 May1
1 adult
1 adult, Economy, 0 bags

Flights to Ko Samui in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Ko Samui
Explore the most affordable flight options available to Ko Samui. Find the lowest fares based on data from user searches, with prices last updated on 10 April 2026.

Tue 12/513:00
SYD
-
USM
2 stops34h 25m
Multiple Airlines
Wed 20/508:00
USM
-
SYD
2 stops24h 45m
Multiple Airlines
Deal found 6/4$696
Thu 21/520:40
SYD
-
USM
2 stops24h 20m
Multiple Airlines
Thu 28/509:15
USM
-
SYD
2 stops31h 05m
Multiple Airlines
Deal found 6/4$716
Thu 11/613:00
SYD
-
USM
2 stops32h 00m
Multiple Airlines
Sun 21/612:30
USM
-
SYD
2 stops27h 50m
Multiple Airlines
Deal found 5/4$721
Tue 5/513:00
SYD
-
USM
2 stops32h 00m
Multiple Airlines
Wed 3/617:55
USM
-
SYD
2 stops22h 25m
Multiple Airlines
Deal found 8/4$724
Tue 12/513:00
SYD
-
USM
1 stop21h 45m
Scoot
Wed 20/519:45
USM
-
SYD
1 stop20h 40m
Scoot
Deal found 6/4$746
Sat 9/520:35
SYD
-
USM
2 stops24h 25m
Multiple Airlines
Wed 20/508:00
USM
-
SYD
2 stops32h 25m
Multiple Airlines
Deal found 6/4$760
Fri 12/613:00
SYD
-
USM
2 stops25h 55m
Multiple Airlines
Sun 21/611:25
USM
-
SYD
2 stops28h 55m
Multiple Airlines
Deal found 5/4$761
Sat 16/513:00
SYD
-
USM
2 stops34h 25m
Multiple Airlines
Sat 23/508:00
USM
-
SYD
2 stops32h 20m
Multiple Airlines
Deal found 9/4$765
Thu 7/513:00
SYD
-
USM
2 stops34h 25m
Multiple Airlines
Thu 14/508:00
USM
-
SYD
2 stops24h 45m
Multiple Airlines
Deal found 9/4$771
Sat 23/513:00
SYD
-
USM
2 stops34h 25m
Multiple Airlines
Sat 30/512:10
USM
-
SYD
2 stops28h 10m
Multiple Airlines
Deal found 8/4$777

Find flight deals to Ko Samui

Find the latest flights to Ko Samui in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 10 April 2026.

Return from

$696

One-way from

$309

Popular in

December

Cheapest in

October

Average price

$1,154
12/5-20/5
  • 12/5-20/5
  • 4 total stops
  • 59h 10m total
  • Sydney to Ko Samui
Search Deals
Scoot
  • Scoot
  • 15/7
  • 1 total stop
  • 31h 20m total
  • Sydney to Ko Samui
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($201 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average return price).
Search Deals
Average for return flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Ko Samui that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 10 April 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

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 21/5

20:40-18:00

2 stops24h 20m

Ko Samui

Thu 28/5

09:15-19:20

2 stops31h 05m

$717

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 11/6

13:00-18:00

2 stops32h 00m

Ko Samui

Sun 21/6

12:30-19:20

2 stops27h 50m

$721

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 11/6

13:00-18:50

1 stop32h 50m

Ko Samui

Sun 21/6

08:40-19:20

1 stop31h 40m

$853

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 18/9

20:35-07:45

1 stop14h 10m

Ko Samui

Fri 2/10

19:45-19:20

1 stop20h 35m

$1,029

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 18/9

13:00-07:45

1 stop21h 45m

Ko Samui

Fri 2/10

19:00-19:20

3 stops45h 20m

$1,046

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 17/5

20:35-17:20

1 stop23h 45m

Ko Samui

Wed 20/5

19:45-19:25

1 stop20h 40m

$1,186
Fastest return journey

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 21/6

09:50-20:50

1 stop14h 00m

Ko Samui

Sun 28/6

13:30-05:10

1 stop12h 40m

$1,488

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 17/5

09:50-21:35

1 stop14h 45m

Ko Samui

Wed 20/5

13:30-10:55

2 stops18h 25m

$1,549

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 3/8

14:45-18:15

1 stop30h 30m

Ko Samui

Tue 25/8

13:30-09:20

2 stops16h 50m

$1,561

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 8/6

07:25-21:10

1 stop16h 45m

Ko Samui

Mon 15/6

17:25-10:25

2 stops14h 00m

$1,582

Flights are sorted by cheapest return flights first.

Deals found on 9/4

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Best time to book a flight to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui 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 to Ko Samui

When is the best time to book a flight to Ko Samui?

Use this chart to determine the optimal time to book a return flight from Sydney to Ko Samui. Price data was last updated on 3 April 2026.

Booking 37 days in advance of your planned departure date is, on average, the best time to get cheap flights to Ko Samui. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 10 April 2026.
Read through reviews of airlines serving Thailand, such as Singapore Airlines,Bangkok Airways, andThai Airways. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,491 reviews
Check prices

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Singapore Airlines
8.2
Very Good
1,491 reviews
Singapore Airlines
8.2
Very Good
1,491 reviews
Check prices

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Bangkok Airways
8.1
Very Good
128 reviews
Singapore Airlines
8.2
Very Good
1,491 reviews
Check prices

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Thai Airways
7.8
Good
396 reviews
Singapore Airlines
8.2
Very Good
1,491 reviews
Check prices

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Qantas Airways
7.5
Good
1,018 reviews
Singapore Airlines
8.2
Very Good
1,491 reviews
Check prices

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Scoot
6.7
Okay
322 reviews
Singapore Airlines
8.2
Very Good
1,491 reviews
Check prices

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

FAQs about flying to Ko Samui

What is good to know if travelling to Koh Samui?

  • Fisherman’s Village is packed with restaurants, shops, market stalls and bars. There is an Irish bar, naturally, called The Irish Times. The Billabong Surf Club flies the Aussie flag.
  • Hua Thanon is a Muslim village on the south coast. While there are some restaurants and a wonderful beach, seeing the fishermen at work and looking at their beautifully decorated boats is the best thing.
  • The bonus to playing a round of golf on Koh Samui are the beautiful views. The Santiburu Samui Country Club on the north coast is an 18-hole, par-72 course. The Royal Samui Golf and Country Club is located next to Chaweng Beach and will be an 18-hole course. It’s nine holes at present. There are views of Lamai, Cheweng and the surrounding islands.
  • Samui Shooting Sport is close to Chaweng about 200 metres from the Tesco Lotus superstore. It’s a great place to let off some steam with, perhaps, an AK-47. Elephant trekking is a gentler option. It’s a great, slow, way to go into Koh Samaui’s jungly heart.
  • From the pier at Bophut beach you can take a boat to Ko Pha Ngan or take a day trip to the Ang Thong National Marine Park, which consists of 42 limestone islands with soaring mountains, sheer cliffs and dense, green forest.
  • Hin Ta and Hin Yai – Grandfather Rock and Grandmother Rock – provide a quirky photo op. The rocks, south of Chaweng beach, are shaped, suggestively, like male and female genitalia.
  • The Muay Thai stadium in Chaweng town is worth a visit to experience this traditional sport.

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

    For a flight to Ko Samui, you will be flying into Ko Samui. Ko Samui (USM) is just 3.3 km from the centre of the city.

  • Can I find cheaper flights to Ko Samui if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ko Samui on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Ko Samui?

    Based on reviews from Cheapflights users, Scoot is rated the highest out of the airlines that fly to Ko Samui.

  • What is the cheapest airport to fly to in Ko Samui?

    Ko Samui is currently the cheapest airport to fly to in Ko Samui. One-way flights to Ko Samui typically cost $76, while return flights cost around $175.

  • How much is a return flight to Ko Samui?

    A return flight to Ko Samui will typically cost around $324, however they can be found for as little as $175.

  • Where does the fastest flight to Ko Samui depart from?

    For those looking to save time traveling to Ko Samui, Perth offers the quickest one-way flight (8 hours 25 minutes).

  • Does Ko Samui have car hire?

    Yes. Those touching down at Ko Samui can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Ko Samui?

    Yes. Ko Samui has hotels nearby for those requiring accommodations. Diamond Pool Villa Samui is the closest property to Ko Samui (0.0 km away from Ko Samui).

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

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