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Nonstop flights from Seoul to Bangkok GMP, ICN → BKK, DMK

Gimpo International Airport (GMP), Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK), Don Mueang International Airport (DMK)

The cheapest nonstop return found recently is $376 with THAI Airways, 20 Jan 2027 – 28 Jan 2027, found 8 hours ago.

Nonstop return

The cheapest nonstop return fare on each of 12 departure dates is usually $374 to $420.

Cheapest nonstop return

$376

20 Jan 2027 – 28 Jan 2027 · THAI Airways

Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK)

Leaves 9:35 a.m. · Return leaves 4:55 a.m. · 11 h 5 min of travel, both ways together

out nonstop, back nonstop

found 8 hours ago

See prices for these datesCheck today's price

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Airlines flying it nonstop on the return fares we hold: Thai Vietjet Air (10 departure dates), Asiana Airlines (8 departure dates), T'way Air (8 departure dates), THAI Airways (7 departure dates), Eastar Jet (7 departure dates), Air Premia (6 departure dates), Jeju Air (1 departure date), Jin Air (1 departure date).

On the 21 trips where we hold both on the same dates, nonstop cost a median $59 (19.6%) more than the cheapest fare with stops. Nonstop was cheaper or the same price on 3 of those 21 trips.

Every nonstop date we hold

Nonstop fares on 12 of the 51 departure dates we hold for this route.

2 Nov – 12 Nov: $367, found 4 days ago3 Nov – 8 Nov: $397, found 3 days ago4 Nov – 19 Nov: $353, found 2 days ago10 Nov – 11 Nov: $412, found 3 hours ago16 Nov – 19 Dec: $417, found 4 days ago17 Nov – 27 Nov: $385, found 5 days ago2 Dec – 5 Dec: $429, found 4 days ago3 Dec – 12 Dec: $382, found yesterday28 Dec – 4 Jan 2027: $608, found 6 days ago20 Jan 2027 – 28 Jan 2027: $376, found 8 hours ago15 Feb 2027 – 26 Feb 2027: $365, found 6 days ago27 Feb 2027 – 20 Mar 2027: $435, found 6 days agoNovDecJanFeb
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
2 Nov – 12 Nov$367Thai Vietjet AirIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 4 days agoSee prices for these dates
3 Nov – 8 Nov$397Thai Vietjet AirIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 3 days agoSee prices for these dates
4 Nov – 19 Nov$353AjetIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 2 days agoSee prices for these dates
10 Nov – 11 Nov$412Thai Vietjet AirIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 3 hours agoSee prices for these dates
16 Nov – 19 Dec$417T'way AirIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 4 days agoSee prices for these dates
17 Nov – 27 Nov$385Eastar JetIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 5 days agoSee prices for these dates
2 Dec – 5 Dec$429Eastar JetIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 4 days agoSee prices for these dates
3 Dec – 12 Dec$382T'way AirIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound yesterdaySee prices for these dates
28 Dec – 4 Jan 2027$608Thai Vietjet AirIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 6 days agoSee prices for these dates
20 Jan 2027 – 28 Jan 2027$376THAI AirwaysIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 8 hours agoSee prices for these dates
15 Feb 2027 – 26 Feb 2027$365THAI AirwaysIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 6 days agoSee prices for these dates
27 Feb 2027 – 20 Mar 2027$435THAI AirwaysIncheon International Airport (ICN) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 6 days agoSee prices for these dates

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work