$694 Cheap Thai Airways International flights Melbourne (MEL) to Samui Intl. Airport (USM)

View $694 flight on Sat, Oct 4, 2025Opens in a new window

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$694 Cheap Thai Airways International flights Melbourne (MEL) to Samui Intl. Airport (USM)

Prices were available within the past 7 days and start at $694 for one-way flights and $1,147 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thai Airways International
Sat, Sep 13 - Sat, Sep 20
MEL
Melbourne
USM
Koh Samui
$1,147 Roundtrip, found 1 day ago
$1,147
Roundtrip
found 1 day ago
Select Thai Airways International flight, departing Sat, Sep 13 from Melbourne to Koh Samui, returning Sat, Sep 20, priced at $1,147 found 1 day ago
Flights from Melbourne (MEL) to Samui Intl. Airport (USM)
Origin airport
Tullamarine
Destination airport
Samui Intl. Airport
Distance
4358 mi

Frequently asked questions

How much is a Thai Airways International flight from Tullamarine Airport (MEL) to Ko Samui Airport (USM)?
Scoring cheap one-way Thai Airways International flights from MEL to USM from $694 on Expedia couldn't be simpler — just filter by "Price (lowest to highest)." Alternatively, check out our affordable return fares from $1,147 for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from MEL to USM with Thai Airways International?
October is one of the most affordable months to jet away to Koh Samui with Thai Airways International. You could also find excellent prices on return and one-way fares in September.
What is the cheapest time to book flights from Tullamarine Airport (MEL) to Ko Samui Airport (USM) with Thai Airways International?
Look for Thai Airways International flights from MEL to USM about one month before you want to go. The cheapest time to book an international flight is usually 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. No matter your fare class and itinerary, the best day of the week to book international airfare is usually Sunday. Friday can be the most expensive. Passengers booking on a Sunday can save an average of 17% compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Thai Airways International fly nonstop from Tullamarine Airport (MEL) to Ko Samui Airport (USM)?
Simply enter your dates, press search and select "Nonstop" on Expedia to browse any direct flights from MEL to USM with Thai Airways International or other airlines.
What is the earliest Thai Airways International flight from MEL to USM?
Filter your results by "Early Morning" and "Morning" to browse the earliest flights from MEL to USM. Heading off early means you're 20% less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Thai Airways International fly into in Koh Samui?
Ko Samui Airport (USM) is the primary Koh Samui gateway for Thai Airways International flights from Tullamarine Airport (MEL).
Why fly with Thai Airways International from MEL to USM?
Offering top-tier customer service, Thai Airways International is a favorite of many travelers flying from MEL to USM. Plus, as a Thai Royal Orchid Plus and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Thai Airways International flight from Tullamarine Airport (MEL) to Ko Samui Airport (USM)?
Depending on the ticket type you purchased, a fee will generally apply if you modify or cancel your flight more than 24 hours after it's been confirmed. To find tickets with more flexibility, select our "No cancel fee" or "Changes included" filter while looking for flights. For more details on changing or canceling your reservation, go to "Trips," select your flight and click on "Manage Booking."

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*Available to One Key members.