$502 Cheap Cathay Pacific flights Samui Intl. Airport (USM) to Seoul (ICN)

View $502 flight on Thu, Sep 11, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$502 Cheap Cathay Pacific flights Samui Intl. Airport (USM) to Seoul (ICN)

Prices were available within the past 7 days and start at $502 for one-way flights and $704 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cathay Pacific
Sun, Sep 7 - Mon, Sep 22
USM
Koh Samui
ICN
Seoul
$704 Roundtrip, found 2 days ago
$704
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Sun, Sep 7 from Koh Samui to Seoul, returning Mon, Sep 22, priced at $704 found 2 days ago
Flights from Samui Intl. Airport (USM) to Seoul (ICN)
Origin airport
Samui Intl. Airport
Destination airport
Incheon Intl.
Airlines serving
EVA Airways, Scoot, Singapore Airlines, Thai Airways International
Popular airline
EVA Airways
Distance
2532 mi

Frequently asked questions

How much is a Cathay Pacific flight from Ko Samui Airport (USM) to Incheon Intl. Airport (ICN)?
Apply the "Price (lowest to highest)" filter on Expedia to look for cheap Cathay Pacific return flights from $704 from USM to ICN. Affordable one-way fares from $502 are also available.**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 USM to ICN with Cathay Pacific?
Browse for round-trip or one-way flights to Seoul in January or February. You could find cheaper fares with Cathay Pacific during these off-season months.
What is the cheapest time to book flights from Ko Samui Airport (USM) to Incheon Intl. Airport (ICN) with Cathay Pacific?
To find affordable flights from USM to ICN with Cathay Pacific, start your search about one month before your intended departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another useful tip? Booking on Sunday can lead to average savings of 17% compared to Friday (the most expensive day).**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 Ko Samui Airport (USM) to Incheon Intl. Airport (ICN)?
To see if there's a direct route from USM to ICN with Cathay Pacific or another airline, check the "Nonstop" box when browsing for tickets.
What is the earliest Cathay Pacific flight from USM to ICN?
Filter your results by "Morning" and "Early Morning" to find the earliest flights from USM to ICN. Jetting off early means flight cancellations are less likely.**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 Seoul?
Take a Cathay Pacific flight from Ko Samui Airport (USM) to Seoul, and you're most likely to touch down at Incheon Intl. Airport (ICN). This is the airline's primary hub in this city.
What kind of luggage can I take on a Cathay Pacific flight from Ko Samui Airport (USM) to Incheon Intl. Airport (ICN)?
A standard economy ticket with Cathay Pacific from USM to ICN allows 1 cabin bag and a small personal article. Your carry-on luggage allowance is 1 cabin bag up to 33 lb with maximum dimensions of 22 inches x 9 inches x 14 inches. Weight and size limits may vary according to the cabin class you're in and airfare type. To avoid extra fees at the terminal, double-check your Cathay Pacific booking or visit the airline's website before packing.
Why fly with Cathay Pacific from USM to ICN?
Cathay Pacific makes flying from USM to ICN more comfortable with an excellent in-flight experience and top-tier customer service. You even have the chance to collect points with Marco Polo Club. Don't forget to join our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on 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 Ko Samui Airport (USM) to Incheon Intl. Airport (ICN)?
Changes are generally free within 24 hours of making your booking, but your airline may charge you after that time. For further details about modifying your flights, head to your "Trips," select your flight and click on "Manage Booking." If you want the flexibility to adjust your plans without extra charges, apply the "No cancel fee" or "Changes included" filter when planning your next getaway.

Explore a world of travel with Expedia

*Available to One Key members.