Cheap Flights from St. Marys (KSM) to Samui Intl. Airport (USM)

Popular airlines from St. Marys, AK (KSM) to Samui Intl. Airport (USM)

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Frequently asked questions

How much does a flight from St. Marys Airport (KSM) to Ko Samui Airport (USM) cost?
Lock in a cheap one-way flight or cheap return flight from St. Marys Airport (KSM) to Ko Samui Airport (USM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from St. Marys Airport (KSM) to Ko Samui Airport (USM)?
The cheapest month to fly from KSM to USM is , when there's less demand. Off-peak months are usually when better flight deals are available between these airports.
What is the cheapest airline that flies from St. Marys Airport (KSM) to Ko Samui Airport (USM)?
To find the cheapest airline flying from KSM to USM, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from St. Marys Airport (KSM) to Ko Samui Airport (USM)?
You'll need to take a flight with a layover if you're traveling from St. Marys Airport (KSM) to Ko Samui Airport (USM). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from KSM to USM?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from St. Marys Airport (KSM) to Ko Samui Airport (USM)?
To avoid potential delays on the St. Marys Airport (KSM) to Ko Samui Airport (USM) route, fly before 3 PM. Later departures have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from St. Marys Airport (KSM) to Ko Samui Airport (USM) last-minute?
Booking your ticket from KSM to USM just before your journey is generally more expensive. But if there's some wiggle room with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book a KSM to USM flight and hotel package?
You can save money by booking a KSM to USM flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After choosing your preferred accommodations and flights, consider adding extras including activities, tours and car rentals.
Can I cancel or change the date of my flight from St. Marys Airport (KSM) to Ko Samui Airport (USM)?
In most cases, you're able to cancel or reschedule your KSM to USM flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need further details, visit our Customer Service portal.

Travel information

Origin airport
St. Marys
Destination airport
Samui Intl. Airport
Distance
5850 mi

Book with confidence

St. Marys to Samui Intl. Airport Flights

The cheapest times to fly from St. Marys 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 St. Marys to Samui Intl. Airport are during the month of . You can find some of the cheapest flights from St. Marys to Samui Intl. Airport with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Marys to Samui Intl. Airport

Sunday is one of the best days to book for cheap flights from St. Marys 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 St. Marys 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 St. Marys to Samui Intl. Airport in 2026. You can also book with separate airlines for your outbound and return journeys, from 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 St. Marys 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 St. Marys 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.

 

St. Marys to Samui Intl. Airport Flights
*Available to One Key members.