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

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.

Corridor profile

Airlines & baggage

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.

Monthly market-low pattern (THB)

Fare trends

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.

Seasonality & best time to book

Bangkok–Seoul fares move with demand. The cheapest windows fall outside school holidays, Songkran and New Year; book 4–8 weeks ahead for normal dates. As a Hajj/Umrah and GCC-labour corridor, fares spike 40–80% during Ramadan and the June–July Hajj season — book 10–14 weeks ahead.

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?

The BKK-ICN route is operated by Thai Airways, Korean Air, Asiana Airlines, T’way Air and Jin Air. Compare baggage, alliances and fares in the table above.

How long and how often is the BKK-ICN flight?

Block time is ~5.5h, with ~56 flights per week across all carriers.

When is BKK-ICN cheapest to book?

The cheapest fare in our cache is ~฿4,129. Book 4–8 weeks ahead; avoid Songkran, school holidays and peak season to save 15–30%.

Is BKK-ICN a Hajj/Umrah route?

Yes. Pilgrims should book via a licensed Hajj agent through the Chularatchamontri Office; Umrah visas are issued via the Nusuk platform.

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Related

• BKK airport
• ICN airport