Prices were available within the past 7 days and start at $270 for one-way flights and $567 for roundtrip, for the period specified. Prices and availability are subject to change.
The cheapest times to fly from Sydney to Samui Intl. Airport
On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sydney to Samui Intl. Airport are during the month of February. You can find some of the cheapest flights from Sydney to Samui Intl. Airport with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Sydney to Samui Intl. Airport
Sunday is one of the best days to book for cheap flights from Sydney to Samui Intl. Airport: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.
How to find cheap round-trip tickets from Sydney to Samui Intl. Airport
Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sydney to Samui Intl. Airport in 2026. You can also book with separate airlines for your outbound and return journeys, from $270 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.
Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sydney to Samui Intl. Airport flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.
You could also save big by booking one of Expedia's vacation packages. Bundling together your Sydney to Samui Intl. Airport airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.
*Terms apply.
Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.
Frequently Asked Questions
How much does a flight from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM) cost?
You can find cheap one-way flights from $270 and cheap return flights $567 Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM) with Expedia. One-way flights typically cost between $275 and $2993, and return flights often range between $803 and $5005. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM) ticket fares go up or down.
*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM)?
October is the cheapest month to fly from Sydney, NSW (SYD) to Samui Intl. Airport (USM), with average round-trip fares around $652. This is about 29% lower than the average price throughout the year, as October often sees a lull in travel after the busy winter holiday season. Other economical months to consider are March and May.
*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM)?
Enter SYD to USM and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM)?
Scoot is one of the cheapest airlines offering connecting flights from Kingsford Smith Intl. (SYD) to Samui Intl. Airport (USM), with round-trip tickets starting from around $598. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM)?
To find a cheap flight from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM)?
For your trip from Sydney, NSW (SYD) to Samui Intl. Airport (USM), October and May are the best months to fly. October offers return flights at around $652, providing a good balance of price and pleasant weather. May is also popular, ensuring you have plenty of options to enjoy the beautiful beaches of Samui.
*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from SYD to USM. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM)?
The most popular departure times for flights from Sydney (SYD) to Samui Intl. Airport (USM) are in the late morning, from 9am to noon. About 34% of passengers prefer this time window. Many major carriers, including Qantas, Thai Airways, and Singapore Airlines, offer flights during this window. This timing is favored as it allows you to enjoy a leisurely morning in Sydney before heading off to your tropical destination.
How long does it take to fly from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM)?
Flying from SYD to USM with a connection usually takes about 13 hours 30 minutes, traveling roughly 4,498 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM)?
Business class seats are offered on the SYD to USM route. Airlines that offer business class service on this route include:
Malaysia Airlines
Bangkok Airways
British Airways
Singapore Airlines
Thai Airways International
Qantas Airways
China Airlines
Cathay Pacific
How do I earn miles on a Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM) flight with Expedia?
It's easy to earn miles on a Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.
*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM) at the last minute?
Typically, booking a last minute flight from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM) flight and hotel package?
Securing a Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM) Koh Samui Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM)?
If you booked your Sydney, NSW (SYD-Kingsford Smith Intl.) to Samui Intl. Airport (USM) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.
Travel information
Origin airport
Sydney Airport
Destination airport
Samui Intl. Airport
Distance
4,497 miles away
Airlines serving
Scoot, Singapore Airlines, Thai Airways International, British Airways, Cathay Pacific, Qantas Airways, Malaysia Airlines, China Airlines, Bangkok Airways, Philippine Airlines, Vietnam Airlines