Cheap flight from Seoul to Chiang Rai from $95

Frequently Asked Questions

• Which airlines offer direct flights from Seoul to Chiang Rai?

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

• When is the best time to book flights from Seoul to Chiang Rai?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seoul to Chiang Rai 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.

• When are flight tickets from Seoul (SEL) to Chiang Rai (CEI) the cheapest?

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

• Which upcoming date is cheapest to fly from Seoul to Chiang Rai on?

  After crunching the numbers on our November flight calendar, it's currently cheapest to fly from Seoul to Chiang Rai on November 25, 2025 with T'Way Air, with prices starting at $91.

• Which airports can I fly to for Chiang Rai from Seoul?

  You can land at any one of the following hubs in Chiang Rai, with Incheon International Airport to Chiang Rai International Airport (ICN-CEI) is by far the most common option on this route: Chiang Rai International Airport (CEI).

• Is there any time difference between Seoul and Chiang Rai?

  The time difference between Chiang Rai and Seoul is 2h.

• How do I change or cancel my ticket from Seoul to Chiang Rai?

  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.