SYD - USM

$317 Find Cheap Flights from Sydney to Ko Samui - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$548
Typical prices: $698-$1,051
Scoot
Mon 10/29Sun 11/11
SYD - USM • 1 stop
Cheapest one-way
$317
Typical prices: $291-$635
Scoot
Wed 2/28
SYD - USM • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Sydney and Ko Samui. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
26 weeks
in advance
Our data shows that travelers who book at least 26 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
When to travel
November
Cheapest • 19% price drop
December
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Singapore Changi (SIN)
Cheapest • Avg $875 (round-trip)
Hong Kong Intl (HKG)
Shortest trip • 15h 06m (one-way)
Insights
Insights
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Booking Insights
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sydney to Ko Samui

Thu, Oct 29 - Wed, Nov 11
Scoot Logo
8:05 pm - 5:10 pmSYD  Sydney Kingsford Smith-USM Ko Samui
25h 05m1 stop Singapore Changi
Scoot Logo
6:05 pm - 12:10 pmUSM  Ko Samui-SYD Sydney Kingsford Smith
14h 05m1 stop Singapore Changi
$548Scoot
Mon, Nov 2 - Tue, Nov 17
Scoot Logo
8:05 pm - 10:55 amSYD  Sydney Kingsford Smith-USM Ko Samui
18h 50m1 stop Singapore Changi
Scoot Logo
6:05 pm - 12:10 pmUSM  Ko Samui-SYD Sydney Kingsford Smith
14h 05m1 stop Singapore Changi
$575Scoot
Sat, Oct 24 - Sat, Oct 31
Multiple Airlines Logo
2:00 pm - 3:10 pmSYD  Sydney Kingsford Smith-USM Ko Samui
29h 10m2 stops Singapore Changi Phuket City
Multiple Airlines Logo
8:15 am - 6:50 pmUSM  Ko Samui-SYD Sydney Kingsford Smith
30h 35m2 stops Phuket City Singapore Changi
$614Multiple Airlines
Thu, Oct 29 - Wed, Nov 11
Multiple Airlines Logo
8:05 pm - 6:25 pmSYD  Sydney Kingsford Smith-USM Ko Samui
26h 20m2 stops Singapore Changi Phuket City
Multiple Airlines Logo
6:05 pm - 6:50 pmUSM  Ko Samui-SYD Sydney Kingsford Smith
20h 45m1 stop Singapore Changi
$620Multiple Airlines
Thu, Oct 29 - Wed, Nov 11
Multiple Airlines Logo
8:05 pm - 6:25 pmSYD  Sydney Kingsford Smith-USM Ko Samui
26h 20m2 stops Singapore Changi Phuket City
Multiple Airlines Logo
5:40 pm - 6:50 pmUSM  Ko Samui-SYD Sydney Kingsford Smith
21h 10m2 stops Bangkok Suvarnabhumi Singapore Changi
$626Multiple Airlines
Mon, Nov 2 - Tue, Nov 17
Multiple Airlines Logo
8:05 pm - 5:10 pmSYD  Sydney Kingsford Smith-USM Ko Samui
25h 05m1 stop Singapore Changi
Multiple Airlines Logo
11:10 am - 12:10 pmUSM  Ko Samui-SYD Sydney Kingsford Smith
21h 00m2 stops Phuket City Singapore Changi
$655Multiple Airlines
Sat, Oct 24 - Sat, Oct 31
Multiple Airlines Logo
2:05 pm - 3:10 pmSYD  Sydney Kingsford Smith-USM Ko Samui
29h 05m1 stop Phuket City
Multiple Airlines Logo
6:15 pm - 10:00 amUSM  Ko Samui-SYD Sydney Kingsford Smith
35h 45m2 stops Phuket City Ho Chi Minh City
$699Multiple Airlines
Mon, Nov 2 - Tue, Nov 17
Multiple Airlines Logo
8:05 pm - 8:25 pmSYD  Sydney Kingsford Smith-USM Ko Samui
28h 20m2 stops Singapore Changi Bangkok Suvarnabhumi
Multiple Airlines Logo
7:00 am - 12:10 pmUSM  Ko Samui-SYD Sydney Kingsford Smith
25h 10m2 stops Bangkok Suvarnabhumi Singapore Changi
$709Multiple Airlines
Tue, Oct 13 - Fri, Oct 23
Scoot Logo
2:00 pm - 6:50 pmSYD  Sydney Kingsford Smith-USM Ko Samui
32h 50m1 stop Singapore Changi
Scoot Logo
6:15 pm - 8:20 pmUSM  Ko Samui-SYD Sydney Kingsford Smith
22h 05m1 stop Singapore Changi
$730Scoot
Tue, Oct 13 - Fri, Oct 23
Scoot Logo
2:00 pm - 6:50 pmSYD  Sydney Kingsford Smith-USM Ko Samui
32h 50m1 stop Singapore Changi
Scoot Logo
6:15 pm - 8:20 pmUSM  Ko Samui-SYD Sydney Kingsford Smith
22h 05m1 stop Singapore Changi
$732Scoot
Booking Insights

Price, demand and travel trends for Sydney to Ko Samui flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Sydney to Ko Samui with more confidence.

How much is a round-trip flight from Sydney to Ko Samui?

Round-trip flights from Sydney to Ko Samui start at $548. Prices are below average for this route right now, with typical round-trip fares ranging from $698 to $1,051. The lowest price found in the past 5 days was $548 on Scoot.

What's the cheapest day of the week to fly from Sydney to Ko Samui?

Monday is the cheapest day of the week to fly from Sydney to Ko Samui, it is 10% cheaper than the average day. Saturday is the most expensive day with flight prices 10% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • November is the cheapest month to fly from Sydney to Ko Samui at $712 round-trip.
  • December ($1,340) and January ($993) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 88% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Sydney to Ko Samui the cheapest?

Flights from Sydney to Ko Samui are cheapest 26 weeks before departure. Booking in this window typically costs about 29% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Sydney to Ko Samui flights

Low season

March

Cheapest flight

$317
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 52% increase in price.
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 round-trip price

Your Sydney to Ko Samui flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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.

  • Which airports can I use when flying from Sydney to Ko Samui?

    Flights from Sydney to Ko Samui usually depart from Sydney Kingsford Smith (SYD) and arrive at Ko Samui (USM).

  • What cabin classes can I book on flights from Sydney to Ko Samui?

    Two cabin classes are available on flights from Sydney to Ko Samui:

    • Economy Class
    • Business Class

  • Which airports do connecting flights from Sydney to Ko Samui pass through?

    One-stop flights from Sydney to Ko Samui most commonly connect through:

    • Singapore Changi (SIN) - 85% of one-stop connections
    • Bangkok Suvarnabhumi (BKK) - 15% of one-stop connections
    • Hong Kong Intl (HKG) - 0% of one-stop connections

    Singapore Changi (SIN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Sydney to Ko Samui?

    Yes. Being flexible with your travel dates can save you up to 18% on the Sydney to Ko Samui route. Monday is the cheapest departure day at $801 round-trip on average, while Saturday is the most expensive at $972, a difference of $171. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Ko Samui?

    Some of the most popular sights in Ko Samui are Lamai Beach, Chaweng Beach and Fishermans Village. These are among the most viewed places in Ko Samui on KAYAK.

  • How expensive are last-minute Sydney to Ko Samui flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 3% above the route average of $881. Book 26 weeks before departure for the lowest fares.

  • How long is a flight from Sydney to Ko Samui?

    A nonstop flight from Sydney to Ko Samui takes 0h 00m, covering 4,495 miles.

  • Do I need a passport to fly from Sydney to Ko Samui?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Sydney to Ko Samui changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $548 to $5,403. That means the highest observed fare was about 10x higher than the lowest one.

  • How are flight prices from Sydney to Ko Samui looking right now?

    One-way fares from Sydney to Ko Samui are currently higher than usual. Average one-way flight prices are about $686, which is 56% above the typical average for this route.

  • How much time can I save by choosing a different layover airport from Sydney to Ko Samui?

    Flying via Singapore Changi (SIN) gives the shortest average 1-stop total travel time at 14h 34m, compared with 15h 06m via Hong Kong Intl (HKG) and 16h 48m via Bangkok Suvarnabhumi (BKK).

  • What is the time difference between Sydney and Ko Samui?

    Ko Samui is 3 hours behind Sydney (Indochina Time vs Eastern Australia Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Ko Samui Airport (USM)?

    Ko Samui Airport (USM) hosts 5 major car rental companies, with daily rates starting from around $14 for economy cars. Top options include:
    · Drive Car Rental
    · Alamo
    · Sixt
    · Enterprise Rent-A-Car
    · Hertz

  • How much should I expect to pay for a Sydney to Ko Samui flight?

    Round-trip flights from Sydney to Ko Samui range from $698 to $1,051, with an average of $881 over the past 12 months. Anything below $698 counts as a good deal.

Your guide to booking Sydney to Ko Samui flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Monday departure instead of Saturday. On this route, Monday flights average $801 - about $171 less than Saturday (18% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 26 weeks before you fly. On this route, that window historically saves about 29% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Sydney to Ko Samui trip for November. Fares historically average $712 round-trip in that month - typically $628 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ko Samui Airport.
    - Ozo Chaweng Samui - Sha Extra Plus
    - Avani Chaweng Samui Hotel & Beach Club - Adults Only
    - Amari Koh 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.

More options for your flight from Sydney to Ko Samui

Complete your trip to Ko Samui with a hotel stay or car rental

Car rentals in Ko Samui
Hotels in Ko Samui
Vacations in Ko Samui