Cheap flights from Incheon Intl Airport to Bangkok from $70

If you aren’t able to travel during the month of September, then book flights to Bangkok from Incheon Intl Airport during May instead. Flights to Bangkok in May, while not as cheap as those in September, still average around $168.

On average, the least expensive day to fly to Bangkok from Incheon Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $293. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Incheon Intl Airport to Bangkok on a Friday will generally be more expensive and average around $345. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

According to our data, the cheapest time of day to fly to Bangkok is at noon. momondo users have found flights departing from Incheon Intl Airport to Bangkok at noon for as low as $265. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the morning because they tend to be around $311. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Bangkok from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok 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 from Incheon Intl Airport for as low as $184 on momondo.

There are 3 cabin classes available to choose from on Incheon Intl to Bangkok flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

T'way Air, AIR PREMIA, and Vietnam Airlines are the most popular carriers operating from Incheon Intl to Bangkok

Thai AirAsia X, T'way Air and Korean Air are the top three most popular airlines that fly to Bangkok from Incheon Intl Airport according to our data. Thai AirAsia X is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 15 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

Historically, on average around 21% of flights between Incheon and Bangkok have experienced a delay on any given week. The average delay length over the past 12 months has been 110 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, Thai Airways have had the least number of delays on this route over the last 12 months; with about 6% of their flights experiencing any sort of delay.

45 flights are operational daily from Incheon Intl Airport to Bangkok as of March 2026. The most popular departure time for this route is 9:00AM, with 38% of flights per day taking off in the evening.

As of March 2026, 315 flights take off from Incheon Intl Airport and land in Bangkok each week. The most common flight departure day for this route is Wed, with 15% of weekly flights taking off on this day.