Flights Bangkok to Seoul (BKK-ICN): Airlines, THB Fares | May 2026

Flights Bangkok → Seoul (BKK-ICN) — THB Fares, Airlines, Frequency

Bangkok to Seoul is one of Thailand’s busiest East Asian corridors, and the schedule shows it — around 56 flights a week across five carriers. The route runs heavy with Thai tourists drawn by Korea’s seasons, food and pop culture, alongside students, Thais working in Korea, returning Korean visitors and business travellers.

Block time is about 5.5 hours, comfortable for a day flight. With this much frequency and a mix of full-service and low-cost carriers, BKK-ICN behaves like a competitive, high-choice route — there is almost always a seat, and the question is usually price and timing.

Airlines on this route

Five carriers fly BKK-ICN: Thai Airways, Korean Air and Asiana Airlines on the full-service side, with T’way Air and Jin Air covering the low-cost end. The full-service carriers include baggage and a fuller cabin service; the low-cost carriers price the seat low and sell baggage, meals and seat choice separately. On a five-hour route, the all-in cost once baggage is added is the fair way to compare a low-cost fare against a full-service one.

THB fares

BKK-ICN fares swing with Korea’s seasons — the spring blossom weeks, the autumn colours and the winter holidays are the busiest and dearest. For those peaks, eight to twelve weeks of lead time is sensible. Outside them, the low-cost carriers’ early fares are the cheapest seats, and three to six weeks usually lands a good price in THB. Mid-week departures tend to be softer than weekends.

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About Seoul

Seoul is South Korea’s capital and a city that rewards every season — palaces and old quarters beside dense, modern districts, mountains within the city limits, and a food and shopping culture that draws many Thai visitors back repeatedly. Incheon International Airport, which serves the city, is also a major regional hub for onward travel. For Thai travellers, Seoul is overwhelmingly a destination in its own right, visited for tourism, study or work rather than as a transit point.

FAQ

Which airlines fly Bangkok to Seoul? Direct BKK-ICN flights are operated by Thai Airways, Korean Air, Asiana Airlines, TW, LJ. Compare baggage allowance, fares and schedules in the carrier table above.

How long is the BKK-ICN flight and how often does it run? Block time is about 5.5 hours. The BKK-ICN route runs roughly 56 flights per week across all carriers.

How far ahead should I book BKK-ICN for the best fare? Booking 4-8 weeks ahead for regular dates, and 10-14 weeks for peak periods (Songkran, New Year, Hajj/Umrah season), typically saves 15-30%. See the month-by-month fare heatmap above.

What is the checked baggage allowance on BKK-ICN? It varies by carrier and fare class — full-service carriers on this route usually include 20-30 kg, while low-cost carriers sell it as an add-on. Confirm the current policy on the airline’s site before booking. Migrant workers should check each carrier’s extra-baggage uplift.

What currency is used in Seoul? Seoul uses USD. Compare airfares in THB and budget on-the-ground spending in USD.

Related routes

• BKK airport
• ICN airport