SYD - USM

$390 Find Cheap Flights from Sydney to Ko Samui

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sydney to Ko Samui departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ko Samui

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Ko Samui, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Ko Samui, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
$796
Typical prices: $1,226-$803
Multiple Airlines
Mon 8/6Mon 22/6
SYD - USM • 2 stops
Cheapest one-way flight
$390
Typical prices: $484-$664
Multiple Airlines
Wed 2/9
SYD - USM • 2 stops
Direct flights
Not available
There are currently no direct flights between Sydney and Ko Samui. You’ll need at least 1 connection.
Insights
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Top stopover airports
Cheapest • Avg $1,414 (return)
Shortest trip • 14h 34m (one-way)
Insights
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When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 25% compared to booking last minute.
Insights
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When to travel
Cheapest • 33% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Ko Samui!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Sydney to Ko Samui (SYD-USM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Sydney to Ko Samui that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Sydney to Ko Samui

Mon, 8 Jun - Mon, 22 Jun
Multiple Airlines Logo
13:00 - 20:25
SYD
-
USM
34h 25m
2 stops
Multiple Airlines Logo
15:25 - 11:45
USM
-
SYD
17h 20m
2 stops
$796Multiple Airlines
Mon, 27 Jul - Thu, 27 Aug
Scoot Logo
20:35 - 07:45
SYD
-
USM
14h 10m
1 stop
Scoot Logo
19:45 - 19:20
USM
-
SYD
20h 35m
1 stop
$797Scoot
Tue, 9 Jun - Thu, 18 Jun
Multiple Airlines Logo
20:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Multiple Airlines Logo
12:30 - 19:20
USM
-
SYD
27h 50m
2 stops
$806Multiple Airlines
Tue, 9 Jun - Thu, 18 Jun
Scoot Logo
20:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Scoot Logo
08:40 - 11:45
USM
-
SYD
24h 05m
1 stop
$813Scoot
Tue, 9 Jun - Thu, 18 Jun
Scoot Logo
20:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Scoot Logo
08:40 - 11:45
USM
-
SYD
24h 05m
1 stop
$818Scoot
Thu, 11 Jun - Wed, 24 Jun
Scoot Logo
13:00 - 18:50
SYD
-
USM
32h 50m
1 stop
Scoot Logo
08:40 - 11:45
USM
-
SYD
24h 05m
1 stop
$819Scoot
Tue, 9 Jun - Thu, 18 Jun
Multiple Airlines Logo
13:00 - 18:00
SYD
-
USM
32h 00m
2 stops
Multiple Airlines Logo
12:30 - 19:20
USM
-
SYD
27h 50m
2 stops
$826Multiple Airlines
Tue, 9 Jun - Thu, 18 Jun
Multiple Airlines Logo
20:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Multiple Airlines Logo
12:30 - 19:20
USM
-
SYD
27h 50m
2 stops
$833Multiple Airlines
Tue, 9 Jun - Thu, 18 Jun
Multiple Airlines Logo
13:00 - 20:25
SYD
-
USM
34h 25m
2 stops
Multiple Airlines Logo
12:30 - 19:20
USM
-
SYD
27h 50m
2 stops
$839Multiple Airlines
Mon, 8 Jun - Mon, 22 Jun
Multiple Airlines Logo
13:00 - 11:55
SYD
-
USM
25h 55m
2 stops
Multiple Airlines Logo
19:45 - 19:20
USM
-
SYD
20h 35m
1 stop
$844Multiple Airlines
Booking Insights

KAYAK's insights & trends for Sydney to Ko Samui flights

Get data-powered insights and trends into flights from Sydney to Ko Samui to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Sydney to Ko Samui?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Sydney to Ko Samui departing in June.

What is the cheapest month to fly from Sydney to Ko Samui?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sydney to Ko Samui, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sydney to Ko Samui is October, where tickets cost $670 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $1,429 and $1,305 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Sydney to Ko Samui, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Sydney to Ko Samui, you should book around 4 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$390
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly (43% more expensive on average)
Flight from Sydney to Ko Samui

When to book flights from Sydney to Ko Samui

Are your dates flexible? Find out the best times to travel from Sydney to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Sydney to Ko Samui

  • What is the cabin luggage allowance for Economy flights to Koh Samui (USM) from Sydney (SYD)?

    Your allowable cabin baggage will depend on the airline you book with. For example, Qantas and Thai Airways generally offer a 7 kg carry-on bag plus a small personal item, such as a handbag or laptop bag. Bangkok Airways usually offers a 5 kg carry-on bag and a personal item. Generally speaking, your personal item should be small enough to fit under the seat in front of you.

  • What are the stopover options between Sydney and Koh Samui?

    You’ll generally have at least one stopover before you reach Koh Samui, and some of the most common destinations include Bangkok (BKK), Ho Chi Minh City (SGN), Hong Kong (HKG) and Singapore (SIN). You’ll find plenty of itineraries with carriers like Qantas, Thai Airways and Bangkok Airways that have short stopovers, reducing your overall transit time. However, if you prefer to take a bit of time to stretch your legs between flights, itineraries with longer stops are also available.

  • What is the cheapest flight from Sydney to Ko Samui?

    In the last 3 days, the lowest price for a flight from Sydney to Ko Samui was $390 for a one-way ticket and $796 for a return.

  • Which airports will I be using when flying from Sydney to Ko Samui?

    Sydney airport is called Sydney Kingsford Smith and the only airport in Ko Samui is Ko Samui.

  • Which aircraft models fly most regularly from Sydney to Ko Samui?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sydney to Ko Samui?

    oneworld, and Star Alliance are the airline alliances operating flights between Sydney and Ko Samui, with oneworld being the most commonly used for this route.

  • What is the most popular stopover when flying to Ko Samui from Sydney?

    Singapore is the most popular stopover city among KAYAK users travelling from Sydney to Ko Samui.

  • Which is the best airline for flights from Sydney to Ko Samui, Singapore Airlines or Bangkok Airways?

    The two airlines most popular with KAYAK users for flights from Sydney to Ko Samui are Singapore Airlines and Bangkok Airways. With an average price for the route of $1,314 and an overall rating of 8.2, Singapore Airlines is the most popular choice. Bangkok Airways is also a great choice for the route, with an average price of $1,495 and an overall rating of 8.1.

  • How does KAYAK find such low prices on flights from Sydney to Ko Samui?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sydney to Ko Samui.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sydney to Ko Samui?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ko Samui from Sydney is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sydney to Ko Samui?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Ko Samui with an airline and back to Sydney with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sydney to Ko Samui?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ko Samui from Sydney up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Sydney to Ko Samui

  • Sydney Airport (SYD) is a hub for Australia’s three major airlines – Qantas, Virgin and Jetstar – all of which operate both domestic and international flights. Samui International Airport (USM) features a unique, open-air layout and is a focus city for Bangkok Airways.
  • If you’d like to have a checked bag included in your fare, consider full-service carriers like Qantas, Bangkok Airways and Thai Airways, which generally offer a free 30 kg checked bag to Economy passengers. Note that low-cost carriers like Scoot often don’t include checked baggage in the Basic Economy fare.
  • If you value the additional space and Priority service of Premium Economy, look for flights with Qantas, Bangkok Airways, Singapore Airlines and Thai Airways. Note that some fares are mixed, meaning you may have a Premium Economy seat on one leg but not on another. If you want to enjoy the Premium experience all the way, you can check whether an itinerary is mixed or completely Premium when searching for flights through KAYAK.

Reviews of the top 5 airlines flying from Sydney to Ko Samui

 
See real verified KAYAK customer reviews for airlines flying from Sydney to Ko Samui. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sydney to Ko Samui? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
Singapore AirlinesOverall score based on 1510 reviews
8.3Boarding
8.0Comfort
8.6Crew
7.8Food
8.0Entertainment
Airline reviews

Really great service throughout and the food was really nice. I can highly recommend thank you very much.

10.0 ExcellentPeter, Apr 2026
LHR - BKI
Read more Singapore Airlines reviews

Really great service throughout and the food was really nice. I can highly recommend thank you very much.

It was okay. I feel that Singapore Airlines isn't as good as it used to be but it's still not bad

Overall were very good and I was satisfied w/ all the food and services.

No frills airline with minimal leg room and no entertainment

The flight arrived on time. 2×2 seating meant no one needed to sit in the middle. This was a connectibf flight from Singapore and required going to 3 counters in different levels to check a golf bag

The crew was very courteous and professional. the flight is relatively clean and comfortable.

Wish the underseat compartment don’t have a restriction, can fit a personal item such as backpack fully like most Boeing

Lounge a access was excellent as was the attentiveness and service from the crew as always. The food and drink supplied were of good quality. The entertainment system had a good selection and I liked the mapping system supplied. However the screen wild have been bigger and the operation a little smoother to navigate. The seats were barely comfortable, but adequate.

Crew and service excellent. 2 hour delay for takeoff. SQ app showed flight on time.

Headwind delayed our flight which wasn’t the airlines fault

Excellent airline. Seats were very comfortable with lots of legroom. In flight service was excellent as well

We were pleased with the flight experience. Nothing to complain or shout about. Unfortunately the rating scale in this survey will skew the results and give a false impression of what really happened. For example, we didn’t use the entertainment system yet we are forced to reply. A far more insightful scale would include “not applicable.”

We flew business class this time. The food in their economy class is much better in general. Also only coffee, tea and orange juice is free. Beer can be bought only. Same as economy, so their business class service is poor.

Nice flight, stress-free but why bother serving a meal on a 55 minute flight. From what I saw there was a lot of waste because travellers weren't interesting in eating on this short trip. Get rid of the meal and cut the price.

Generally good. I didn't have any food on the flight so I can't make a judgement. It smelled good.

Efficient, comfortable and clean-very good flight with friendly staff and crew

On a 45 mins flight to Koh Samui from Bangkok we were served delicious shrimp pad thai and hot tea. The flight crew did an awesome job serving a full flight.

Seats are tight and leg room so small. We had deep impressions under kneecap from the seat in front. A sign that Bangkok Airways is fully aware how small it is built is the cutout in the table. Very uncomfortable for people in size 1.80 m or more.

This is my 2nd flight with this airline. Service is very good. I was surprised they served a meal on such a short flight. The airplane landed so smooth that most people were unaware the plane had just landed. About half of the people on board applauded.

The staff were helpful and very pleasant. The food is tasty and there’s plenty of water provided. Flights are well air conditioned.

HAVING ANNOUNCEMENTS FOR PEOPLE TO BOARD ACCORDING TO GROUP IS ESSENTIAL N ENSURING N CUTTING OF QUEUES, EXCEPT FOR PRIORITY CLASS PASSENGERS ON A SEPARATE Q

We still get drinks and a snack. Love the gift bags too.

business class is old but still done very well by the team.

Excellent airline. The plane was clean and the staff were very attentive

Good experience although the boarding gate is at the terminal extension hence need to leave lounge to head over earlier.

Thai Royal First is very good. Easy check in , Private room in the first class lounge and escort from ticketing to the plane. Once on board crew was very polite, food was outstanding, and the ride was smooth as silk. Restrooms were especially clean. Great Experience

I'm not interested in improving the airline. Therefore, I won't explain this in more detail. Next time I'll try a different one.

The flight (boarding) was delayed by 40-50 minutes and there was very crowed. They need to improve on the timeliness & boarding process. (They asked passenger to board in groups, but the 2nd group was standing there waiting for 20 minutes!). However, services from the crew was very good, also the food was good as well. I also found the legroom was quite comfortable.

Need to improve on punctuality. My flight was delayed by 1 hour.

Seats were uncomfortable and the vegetarian meal was awful. Some of the entertainment didn't work.

I never flew with alliance. Kayak is a joke and none of the flights or times were correct. Won’t ever use kayak again

I missed my flight due to unforeseen circumstances It was, however , an excellent price !

Loved the food and beverages available, spacious economy class, excellent entertainment

Very good overall. Highly recommend for all flying to Australia

Helpful staff when I felt unwell. Qantas need to have an audio/music channel so you can listen to various music/.artists

We had bulkhead seats in a A380 in the upper deck in seats 31 D and E. Storage was very limited other than in overhead bin - which is not within reach when in seat. Yet paying same price as others in premium economy who have a lot more storage within arm’s reach. Seems very unfair.

Good check in and helpful staff. Delayed for 1 hour. Took about 45 Mins to get baggage’s at DFW . Food was average ( Hindu meal ) . Overall it was good experience

My experience was great overall. Tanya was particularly friendly and helpful the entire trip. I was very pleased with her customer service skills. The plane was an older aircraft but the entire way was comfortable with barely any turbulence at all. Qantas should speed up its fleet renovation. Totally recommend using this airline.

When I originally booked this flight, I was expecting to travel on Qantas. When the itinerary changed and the long-haul segment was operated by American Airlines, we were disappointed but remained open-minded. Unfortunately, the overall service experience fell far short of expectations. This was a long-haul international flight. Getting up periodically to use the restroom or stretch is inevitable, especially on flights of this duration. However, each time we stood up, we felt as though we were inconveniencing the crew. The tone and body language often suggested that we were in the way or disrupting something simply by moving about the cabin. As a result, I avoided getting up as often as I needed to and was physically very sore upon arrival. Meal service was similarly impersonal. The options were presented in single words “beef or veggie,” “pasta or beef” without any description of what was actually being served. There was little engagement or courtesy beyond that. Even simple expressions of gratitude were often not acknowledged. I am accustomed to no-frills travel and do not expect luxury. What was disappointing was not the absence of extras, but the absence of basic warmth and professionalism. On a long-haul international flight, small moments of courtesy and humanity make a significant difference. In this case, the experience felt transactional and dismissive rather than welcoming. I hope this feedback is taken constructively, as there is a meaningful difference between efficient service and indifferent service.

Qantas is always subpar beyond comfy chairs for a domestic flight

Boarding was not as per sequence Light snacks were not available Window had hair oil stains and water condensation

3 hours delay ,we changed plane after boarding and waiting inside

Apart from the staff at the airport who were amazing the rest of the experience with scoot was disgusting a very basic flight packed and uncomfortable no consideration to a disabled traveller. And even worse from Singapore to Vienna. All about the money. Not even a complementary coffee or juice. From the airline. The staff at the airport didn't look at me as been disabled and no help not even a wheelchair was offered. The food on the plane was cheap and tasteless and expensive no entertainment on plane and WiFi which had to be paid for was intermittent at best.

Uncoordinated boarding, seat comfort is terrible, even toilet is so small that overweight people wouldn't fit in. Baggage scam with additional fees. Stay away from this airline.

Forthright communication to the customers regarding services offered and any fees involved.

Scoot is a no frills budget airline. Do not expect a legacy airline experience.

I have taken more than 50 flights in the past year and this is the worst onboard experience that I've come across. There's always a risk with budget airlines and their creative views of customer service. Having bought a standard seat, we boarded at the assigned seat - we naturally couldn't choose ourselves as that would be extra cost. After take-off, the person in the row in front leans back their seat. As a frequent flyer, I believe this is their right, so I try to lean my seat back as well to have the same space available. However, my standard seat could not lean back, as the row behind was an exit row. As I had paid for a standard seat, not a less space than standard, I moved to the completely free row behind me. This was not allowed, as due to extra legroom, this would cost extra. Subsequently spent the next 30 mins discussing this scenario with the crew. I have no issues with budget airlines and additional charges, but if I pay for a standard seat, I want a standard seat, not one with less space. As you do not offer me a discount for the less space, do not try and charge me a premium, when I find a free seat with more space. It works both ways Scoot.

Finishes were quite worn, including our very scratched up seatback. No entertainment available, and the WiFi (even for “ScootHub”) was very slow. Crew were somewhat friendly.

Food & lower the prices. Look at Air Asia food look better & affordable

Not a frequent user of their website booking. Booked my check-in baggage and only realized that I did not book my check in baggage for return flight. The receipt was not clear in identifying that as well. Was charged exorbitantly at check in counter. Bad taste for sure when it is a business trip and not leisure trip. Baggage was delayed for more than an hour at belt back in SG.

Everything you need to know for your flight from Sydney to Ko Samui

Other airlines flying from Sydney to Ko Samui

Flights from the other most popular airlines that fly from Sydney to Ko Samui according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.