Find T'Way Air(TW) flights from Guam to Seoul

At the moment, you can catch a nonstop flight from Guam to Seoul with the following airlines, including: Jin Air Air Seoul Korean Air Air Busan Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

It takes about 4 hours 47 minutes to fly from Guam to Seoul.

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Guam to Seoul is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

Based on Trip.com data in the past 4 weeks, there is 28 flight per week flying from Guam to Seoul. You can check the weekly schedule for popular airlines on this route below: Jin Air: S/M/T/W/T/F/S -- LJ918 (02:51) Korean Air: S/M/T/W/T/F/S -- KE418 (01:05)

The cheapest months to fly from Guam to Seoul is October, when demand for travel is lower.

After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Guam to Seoul on March 25, 2026 with Air Seoul, with prices starting at US$142.

You can land at any one of the following hubs in Seoul, with Antonio B. Won Pat International Airport to Incheon International Airport (GUM-ICN) is by far the most common option on this route: Gimpo International Airport (GMP) Incheon International Airport (ICN).

The time difference between Seoul and Guam is 1h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.