$825 Cheap Cathay Pacific flights Miami (MIA) to Samui Intl. Airport (USM)

View $825 flight on Mon, Oct 6, 2025Opens in a new window
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$825 Cheap Cathay Pacific flights Miami (MIA) to Samui Intl. Airport (USM)

Prices were available within the past 7 days and start at $825 for one-way flights and $1,998 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cathay Pacific
Mon, Oct 6 - Mon, Oct 20
MIA
Miami
USM
Koh Samui
$1,998 Roundtrip, found 1 day ago
$1,998
Roundtrip
found 1 day ago
Select Cathay Pacific flight, departing Mon, Oct 6 from Miami to Koh Samui, returning Mon, Oct 20, priced at $1,998 found 1 day ago
Flights from Miami (MIA) to Samui Intl. Airport (USM)
Origin airport
Miami Intl.
Destination airport
Samui Intl. Airport
Airlines serving
Air France, British Airways, Cathay Pacific, Finnair, KLM, Lufthansa, Qatar Airways, Swiss International Air Lines, Turkish Airlines
Popular airline
Qatar Airways
Distance
9994 mi

Frequently asked questions

How much is a Cathay Pacific flight from Miami Intl. Airport (MIA) to Ko Samui Airport (USM)?
Grab cheap return Cathay Pacific flights from $1,998 from MIA to USM by filtering your results from "Price (lowest to highest)" on Expedia. Or search for bargains from $825 for a one-way trip.**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 MIA to USM with Cathay Pacific?
October is one of the cheapest months to jet off to Koh Samui with Cathay Pacific. You could also find great deals on return and one-way fares in September.
What is the cheapest time to book flights from Miami Intl. Airport (MIA) to Ko Samui Airport (USM) with Cathay Pacific?
Search for Cathay Pacific flights from MIA to USM about one month before you want to go. The most affordable time to reserve 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 to book international airfare is usually Sunday. Friday can be the most expensive. Travelers 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 Cathay Pacific fly nonstop from Miami Intl. Airport (MIA) to Ko Samui Airport (USM)?
Click on our "Nonstop" filter when browsing for direct Cathay Pacific flights from MIA to USM. You can also compare other airlines offering the same nonstop trip.
What is the earliest Cathay Pacific flight from MIA to USM?
Browse Cathay Pacific's earliest flights from MIA to USM by checking the "Early Morning" and "Morning" filters. Not only will you get to your destination sooner, early departures also experience 20% fewer 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 Cathay Pacific fly into in Koh Samui?
Board a Cathay Pacific flight from Miami Intl. Airport (MIA) to Koh Samui, and you're most likely to come in to Ko Samui Airport (USM). This is the airline's main hub here.
What kind of luggage can I take on a Cathay Pacific flight from Miami Intl. Airport (MIA) to Ko Samui Airport (USM)?
A standard economy ticket with Cathay Pacific from MIA to USM allows 1 cabin bag and a small personal article. Your carry-on allowance is 1 cabin bag up to 33 lb with dimensions no larger than 22 inches x 9 inches x 14 inches. Size and weight limits can differ based on your cabin class and airfare type. To avoid unexpected fees at the terminal, check your Cathay Pacific booking or visit the airline's website before you pack.
Why fly with Cathay Pacific from MIA to USM?
With a 5-star airline rating and top-tier customer service, Cathay Pacific is a favorite for many passengers heading from MIA to USM. What's more, if you're a Marco Polo Club and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can go toward future travel.*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 Cathay Pacific flight from Miami Intl. Airport (MIA) to Ko Samui Airport (USM)?
Depending on the type of ticket you purchased, a fee generally applies if you cancel or change your booking more than 24 hours after it's confirmed. To find tickets with more flexibility, select our "Changes included" or "No cancel fee" filter when looking for flights. To learn more about changing or canceling your reservation, visit "Trips," select your flight and click on "Manage Booking."

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*Available to One Key members.