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 return found recently is $322 with Shandong Airlines, 10 Nov – 16 Nov, found yesterday. The cheapest one-way found recently is $134 with Thai Vietjet Air, 1 Jun 2027, found 4 days ago.
Return
The cheapest return fare on each of 51 departure dates is usually $332 to $370.
Cheapest return found recently
$322
10 Nov – 16 Nov · Shandong Airlines
Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK)
Leaves 3:10 p.m. · Return leaves 3:05 a.m. · 27 h 50 min of travel, both ways together
out 1 stop, back 1 stop
found yesterday
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 7 hours ago
Every nonstop date from Seoul to Bangkok
Found recently, and the cheapest we hold
$322 10 Nov – 16 Novfound yesterdaySee prices for these dates
$285 2 Nov – 11 Novfound 6 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $228 to $285.
At $322, the cheapest return found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 51 departure dates from 24 Oct to 18 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
No. We hold 6-night return fares on 1 other departure date within 3 days of 10 Nov, and it is not cheaper.
Every date we hold
460 fares on 51 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 24 Oct – 24 Oct | $362 | T'way Air | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 26 Oct – 9 Nov | $303 | Vietnam Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 28 Oct – 28 Oct | $333 | Vietjet | Incheon International Airport (ICN) → Don Mueang International Airport (DMK) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 2 Nov – 11 Nov | $285 | Vietnam Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back nonstop | found 6 days ago | See prices for these dates |
| 3 Nov – 7 Nov | $302 | Shandong Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 4 Nov – 19 Nov | $294 | Vietnam Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back nonstop | found 2 days ago | See prices for these dates |
| 8 Nov – 12 Dec | $364 | Vietnam Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 10 Nov – 16 Nov | $322 | Shandong Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 11 Nov – 11 Nov | $336 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 12 Nov – 18 Nov | $348 | Air China | Gimpo International Airport (GMP) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 15 Nov – 23 Nov | $329 | Vietnam Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 16 Nov – 19 Dec | $331 | Shanghai Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 17 Nov – 25 Nov | $322 | Vietnam Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back nonstop | found 6 days ago | See prices for these dates |
| 18 Nov – 26 Nov | $333 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 20 Nov – 25 Nov | $300 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 25 Nov – 25 Nov | $5,089 | All Nippon Airways | Gimpo International Airport (GMP) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 26 Nov – 10 Dec | $334 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 29 Nov – 30 Dec | $353 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 2 Dec – 7 Dec | $332 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 3 Dec – 12 Dec | $328 | Shandong Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 4 Dec – 12 Dec | $355 | Air China | Gimpo International Airport (GMP) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 7 Dec – 7 Dec | $369 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 9 Dec – 15 Dec | $333 | Shanghai Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 15 Dec – 26 Dec | $354 | Vietnam Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 18 Dec – 28 Dec | $351 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 2 stops, back 1 stop | found yesterday | See prices for these dates |
| 20 Dec – 30 Dec | $381 | China Southern Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 21 Dec – 1 Feb 2027 | $331 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 2 stops, back 1 stop | found yesterday | See prices for these dates |
| 24 Dec – 10 Jan 2027 | $408 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 28 Dec – 3 Jan 2027 | $386 | Shandong Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 29 Dec – 4 Jan 2027 | $370 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 3 Jan 2027 – 14 Feb 2027 | $428 | China Southern Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 8 Jan 2027 – 23 Jan 2027 | $396 | Shanghai Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 9 Jan 2027 – 23 Jan 2027 | $365 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 11 Jan 2027 – 23 Jan 2027 | $365 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 12 Jan 2027 – 24 Jan 2027 | $368 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 13 Jan 2027 – 19 Jan 2027 | $369 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 2 stops, back 1 stop | found 3 days ago | See prices for these dates |
| 15 Jan 2027 – 21 Jan 2027 | $395 | Shanghai Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 16 Jan 2027 – 30 Jan 2027 | $369 | Shandong Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 18 Jan 2027 – 29 Jan 2027 | $365 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 20 Jan 2027 – 27 Jan 2027 | $349 | Cathay Pacific | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 7 hours ago | See prices for these dates |
| 21 Jan 2027 – 24 Jan 2027 | $366 | Cathay Pacific | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 25 Jan 2027 – 1 Feb 2027 | $328 | Shandong Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 28 Jan 2027 – 4 Feb 2027 | $582 | Air China | Gimpo International Airport (GMP) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 5 Feb 2027 – 19 Feb 2027 | $413 | Shandong Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 8 Feb 2027 – 22 Feb 2027 | $334 | Shandong Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 11 Feb 2027 – 18 Mar 2027 | $379 | China Eastern | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 2 stops, back 1 stop | found 5 days ago | See prices for these dates |
| 15 Feb 2027 – 25 Feb 2027 | $297 | Shandong Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 18 Feb 2027 – 25 Feb 2027 | $629 | Air China | Gimpo International Airport (GMP) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 27 Feb 2027 – 20 Mar 2027 | $362 | Shandong Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 2 Mar 2027 – 11 Mar 2027 | $352 | Shandong Airlines | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 18 Mar 2027 – 3 Apr 2027 | $659 | Air China | Gimpo International Airport (GMP) → Suvarnabhumi Airport (BKK) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $285.
Airlines on the cheapest dates: China Eastern, Shandong Airlines, Vietnam Airlines, Air China, Shanghai Airlines, China Southern Airlines, Cathay Pacific, T'way Air.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$134
1 Jun 2027 · Thai Vietjet Air
Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK)
Leaves 10:10 a.m. · 5 h 50 min trip
nonstop
found 4 days ago
Cheapest nonstop one-way
$134
1 Jun 2027 · Thai Vietjet Air
Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK)
Leaves 10:10 a.m. · 5 h 50 min trip
nonstop
found 4 days ago
Found recently, and the cheapest we hold
$134 1 Jun 2027found 4 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $81 to $164.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 2 departure dates and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 1 Jun 2027 to compare.
Every date we hold
13 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 1 Jun 2027 | $134 | Thai Vietjet Air | Incheon International Airport (ICN) → Suvarnabhumi Airport (BKK) | nonstop | found 4 days ago | Open this trip |
| 1 Jul 2027 | $228 | Korean Air | Gimpo International Airport (GMP) → Suvarnabhumi Airport (BKK) | 2 stops | found 5 days ago | Open this trip |
Which month looks cheapest?
June 2027 is the cheapest month — from $134.
Airlines on the cheapest dates: Thai Vietjet Air, Korean Air.
Premium cabin fares from Seoul to Bangkok
Return
We looked for premium economy, business and first-class return fares on this route, and hold none found in the last 7 days.
Today's prices for 10 Nov – 16 Nov in another cabin: Premium economy · Business · First
One-way
Business
The lowest business fare we have seen is $449, across 5 departure dates.
15 Nov · ICN → BKK · Shandong Airlines
1 stop · via TNA · 12 h connection
found 4 days ago
That business fare is 3.4 times the economy fare of $134.
Today's prices for 1 Jun 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Seoul to Bangkok?
Return
Fares 180 or more days before departure were typically 17% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $299 | $228 | +21% | 24 |
| 7–13 days | $301 | $228 | +21% | 23 |
| 14–29 days | $285 | $232 | +15% | 25 |
| 30–59 days | $266 | $244 | +7% | 25 |
| 60–89 days | $302 | $243 | +22% | 25 |
| 90–179 days | $310 | $293 | +25% | 25 |
| 180+ days | $248 | $247 | Cheapest seen | 25 |
One-way
Not enough history yet: in 25 days of one-way prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Cheongju → Bangkok
112 km from Seoul
$451
$129 more than flying from Seoul
20 Nov – 1 Dec · CJJ → BKK · out 1 stop, back 3 stops
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 10 Nov – 16 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
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