Cheap flights from Seoul to Bangkok from $126

The month of September is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from Seoul, with most prices found around $156. The month of May is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from Seoul averaging around $169.

The cheapest day to depart on your flight to Bangkok Suvarnabhumi Airport is on a Tuesday when prices can be found for as low as $298. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from Seoul because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $363.

Our most recent data shows that the best time of day to fly to Bangkok Suvarnabhumi Airport is in the evening. Flights from Seoul to Bangkok Suvarnabhumi Airport during this time can be as low as $289. In the morning is when there is more demand to fly to Bangkok Suvarnabhumi Airport, so prices are often more expensive at around $317 per ticket.

Fly from Incheon Intl to Bangkok Suvarnabhumi for the best Seoul - Bangkok Suvarnabhumi flight prices

You are more likely to see cheaper flights to Bangkok Suvarnabhumi Airport from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok Suvarnabhumi Airport for around $223 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok Suvarnabhumi Airport from Seoul for as low as $181 on momondo.

You could potentially save up to 19% on your flight if you consider stops on a Seoul to Bangkok Suvarnabhumi Airport flight.

As of May 2026, prices for Seoul to Bangkok Suvarnabhumi Airport flights are approximately 25% cheaper when compared to flights at the same time last year.

Shandong Airlines, China Eastern, and Air Busan are the most popular carriers operating from Seoul to Bangkok Suvarnabhumi

Thai AirAsia X, T'way Air and Asiana Airlines are the top three most popular airlines that fly to Bangkok Suvarnabhumi Airport from Seoul according to our data. Thai AirAsia X is the first choice among our users, with 27% of people opting to fly with this airline when traveling to Bangkok Suvarnabhumi Airport. Keep in mind that there are 15 different airlines that fly to Bangkok Suvarnabhumi Airport on a routine basis, so you have a few additional options to choose from.

Shanghai (PVG) was the most common stop: 25% of momondo users choosing 1-stop flights on this route connected there.

Flights via Nanjing (NKG) offer the lowest average round-trip price of $185.

Flights connecting via Guangzhou (CAN) have the shortest average one-way travel time: 8h 30m.

Guangzhou (CAN) has the shortest average layover time for this route: 1h 53m.

The number of flights available between Seoul and Bangkok Suvarnabhumi Airport is 28 per day as of May 2026. The most frequent departure time is 9:00AM, with 45% of daily flights leaving at noon.

As of May 2026, there are 202 flights per week flying from Seoul to Bangkok Suvarnabhumi Airport. The most common day of the week flights depart is Wed, with 17% of flights taking off on this day.