AirHint found the following cheapest one-way flights from Seoul (GMP) to Bangkok (BKK) in April 2026 (see full year).
One-Way flights
| 21 Apr | Jeju Air | ||
| 07 Apr | Jeju Air | ||
| 01 Apr | Jeju Air | ||
| 08 Apr | Korean Air | ||
| 27 Apr | Jeju Air | ||
| 26 Apr | Korean Air | ||
| 06 Apr | Jeju Air | ||
| 28 Apr | Korean Air | ||
| 09 Apr | Jeju Air | ||
| 05 Apr | Jeju Air |
Also check the deals for return flights from Seoul to Bangkok in April.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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