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Cheap flights from Sydney to Koh Samui from $325

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
27 Jan — 3 Feb1
1 adult

Cheap flight deals from Sydney to Koh Samui

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Koh Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 22 January 2025.

Round-trip from

$934

One-way from

$325

Popular in

December

Cheapest in

August

Average price

$1,632
6/3-19/3
  • 6/3-19/3
  • 5 total stops
  • 69h 55m total
  • Sydney to Koh Samui
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Scoot
  • Scoot
  • 6/3
  • 1 total stop
  • 32h 25m total
  • Sydney to Koh Samui
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($406 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($90 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2025
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Find flight deals from Sydney to Koh Samui

Cheapest flights from Sydney to Koh Samui
Explore the most affordable flight options available from Sydney to Koh Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 January 2025.

Thu 6/315:10SYD - USM
2 stops31h 20mMultiple Airlines
Wed 19/318:15USM - SYD
3 stops38h 35mMultiple Airlines
Deal found 21/1$934
Thu 3/720:45SYD - USM
1 stop24h 45mScoot
Fri 18/709:00USM - SYD
1 stop31h 30mScoot
Deal found 21/1$995
Sat 3/515:00SYD - USM
1 stop20h 05mSingapore Airlines
Sat 10/519:25USM - SYD
1 stop12h 00mSingapore Airlines
Deal found 20/1$1,131
Sat 10/510:15SYD - USM
2 stops25h 00mPhilippine Airlines
Mon 2/610:05USM - SYD
2 stops18h 55mPhilippine Airlines
Deal found 20/1$1,736
Fri 24/108:45SYD - USM
2 stops16h 10mCathay Pacific
Sat 1/207:55USM - SYD
2 stops24h 05mCathay Pacific
Deal found 20/1$3,074
Thu 26/606:10SYD - USM
2 stops18h 00mQantas Airways
Sun 6/716:25USM - SYD
1 stop11h 40mQantas Airways
Deal found 20/1$5,166

Find flights from Sydney to Koh Samui within your budget

Customise your flight search to find flights from Sydney to Koh 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 22 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SydneyKoh Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 6/3

15:10-18:30

2 stops31h 20m

Ko Samui

Wed 19/3

18:15-12:50

3 stops38h 35m

$934

SydneyKoh Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 3/7

20:45-18:30

1 stop24h 45m

Ko Samui

Fri 18/7

09:00-19:30

1 stop31h 30m

$995

SydneyKoh Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 3/5

15:00-08:05

1 stop20h 05m

Ko Samui

Sat 10/5

19:25-10:25

1 stop12h 00m

$1,131

SydneyKoh Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 26/6

06:10-21:10

2 stops18h 00m

Ko Samui

Sun 6/7

13:30-07:05

1 stop14h 35m

$5,200

SydneyKoh Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 19/7

20:45-18:30

1 stop24h 45m

$344

SydneyKoh Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 19/7

12:50-13:45

2 stops27h 55m

$438

Flights are sorted by cheapest return flights first.

Deals found on 21/1

Best time to book a flight from Sydney to Koh Samui

Have a flexible travel schedule? Discover the best time to fly to Koh Samui from Sydney 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.

Travel insights for flights from Sydney to Koh Samui

Get recent, data-driven insights about flights from Sydney to Koh Samui including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Sydney to Koh Samui?

Use this chart to determine the optimal time to book a return flight from Sydney to Koh Samui. Price data was last updated on 17 January 2025.

Booking 23 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sydney to Koh Samui. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Sydney to Koh Samui?

Currently, August is the cheapest month in which you can book a flight from Sydney to Koh Samui (average of $533). Flying from Sydney to Koh 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 SYD to USM?

Find hourly flight availability from Sydney to Koh Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 January 2025.

It’s optimal to fly from Sydney to Koh Samui in the evening. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the morning.

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

Use this chart to determine the cheapest time to fly return from Sydney to Koh Samui. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Sydney to Koh Samui flight should consider departing on Tuesday at midday when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Koh Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Koh Samui when rainfall is around 58.0 mm.

Temperature in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Koh Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

Reviews of airlines servicing Koh Samui

Get insights into the airlines that provide service to Koh 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 Koh Samui. Reviews last updated 22 January 2025.
Singapore Airlines
8.1
Very Good
1,328 reviews
Check prices

Crew

8.6

Overall

8.1

Food

7.7

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Singapore Airlines
8.1
Very Good
1,328 reviews
Singapore Airlines
8.1
Very Good
1,328 reviews
Check prices

Crew

8.6

Overall

8.1

Food

7.7

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Qantas Airways
7.5
Good
824 reviews
Singapore Airlines
8.1
Very Good
1,328 reviews
Check prices

Crew

8.6

Overall

8.1

Food

7.7

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Scoot
6.7
Okay
300 reviews
Singapore Airlines
8.1
Very Good
1,328 reviews
Check prices

Crew

8.6

Overall

8.1

Food

7.7

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Related info for your journey

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

  • What are the cheapest airlines flying from Sydney to Koh Samui round-trip?

    According to our current data, Scoot ($995), Singapore Airlines ($1,131), and Qantas Airways ($5,200) offers the cheapest pricing from Sydney to Koh Samui. You may be able to fly from Sydney to Koh Samui for 24% less than the average price by searching for these airlines.

  • Where are the most common stopover locations when flying from Sydney to Koh Samui?

    Sydney to Koh Samui flights have a stopover in Singapore most of the time.

  • What are some popular things to do or see while on a stopover in Singapore?

    Sentosa, Merlion, and Boat Quay are currently the most popular points of interest in Singapore at the moment. Sentosa, Merlion, and Boat Quay can be accessed by travelling approximately 21.6 km, 16.9 km, and 17.3 km, respectively from Singapore Changi. Those landing in Singapore looking to spend some time exploring during their stopover can hire a car for about $174 per day.

  • Where are the least popular stopover locations for Sydney to Koh Samui flights?

    Sydney to Koh Samui flights that have stopovers will least frequently stop in Bangkok.

  • Can I find deals for flights from Sydney to Koh Samui that include hotel bookings?

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

  • How can I find direct flights from Sydney to Koh Samui?

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

  • Can I find deals for business class flights from Sydney to Koh Samui?

    Yes. Cheapflights offers flight deals from Sydney to Koh 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 Sydney to Koh Samui?

    Currently, August is the cheapest month in which you can book a flight from Sydney to Koh Samui (average of $533). Flying from Sydney to Koh 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 Sydney?

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

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Fly from Sydney to Koh Samui on these airlines

Choose from the following airlines for your flight from Sydney to Koh Samui. Flights are based on user searches made on Cheapflights and were last updated on 22 January 2025.
Singapore Airlines flights from Sydney Kingsford Smith to Ko Samui
Bangkok Airways flights from Sydney Kingsford Smith to Ko Samui
Qantas Airways flights from Sydney Kingsford Smith to Ko Samui

Top 5 airlines flying from Sydney to Koh Samui

Discover the top 5 airlines that operate flights from Sydney to Koh 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 22 January 2025.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$706Average$944FlexibilityNo cancel feeOn-timeN/A
Search Scoot flights
Singapore AirlinesCheapest$1,008Average$1,337FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Bangkok AirwaysCheapest$1,230Average$1,378FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Thai AirwaysCheapest$1,231Average$1,487FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
Qantas AirwaysCheapest$1,257Average$1,960FlexibilityNo cancel feeOn-time74%
Search Qantas 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 Sydney to Koh Samui?

Cheapflights makes it easy to find Sydney to Koh Samui flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Sydney to Koh 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 Koh Samui from Sydney.

Can Cheapflights find flights from Sydney to Koh Samui with no change fees?

Certainly. Search results for flights to Koh Samui from Sydney shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Sydney to Koh Samui become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Koh Samui from Sydney today and book when prices fit your budget.

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