Busan to Seoul flights in December 2026 from $23 PUS → GMP, ICN
Gimhae International Airport (PUS) → Gimpo International Airport (GMP), Incheon International Airport (ICN)
For departures in December 2026, the cheapest return found recently is $84 with Eastar Jet, 25 Dec – 14 Jan 2027, found 2 days ago. The cheapest one-way found recently is $23 with Eastar Jet, 1 Dec, found 2 days ago.
Return
We hold return fares on only 2 departure dates in December 2026, too few to say what one usually costs.
Cheapest return found recently
$84
25 Dec – 14 Jan 2027 · Eastar Jet
Gimhae International Airport (PUS) → Gimpo International Airport (GMP)
out nonstop, back nonstop
found 2 days ago
It is also the cheapest return we hold, of any age.
The cheapest dates in December 2026
| Dates | From | Airline | Stops | Found | |
|---|---|---|---|---|---|
| 25 Dec – 14 Jan 2027 | $84 | Eastar Jet | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 22 Dec – 1 Jan 2027 | $96 | Eastar Jet | out nonstop, back nonstop | found 7 days ago | See prices for these dates |
Every date we hold
2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 22 Dec – 1 Jan 2027 | $96 | Eastar Jet | Gimhae International Airport (PUS) → Gimpo International Airport (GMP) | out nonstop, back nonstop | found 7 days ago | See prices for these dates |
| 25 Dec – 14 Jan 2027 | $84 | Eastar Jet | Gimhae International Airport (PUS) → Gimpo International Airport (GMP) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $58.
One-way
In December 2026, the cheapest one-way fare on each of 8 departure dates is usually $24 to $43. Across all 44 departure dates we hold on this route, it is usually $28 to $60. Of the 6 months with enough one-way fares to compare, December 2026 is usually the cheapest.
Cheapest one-way found recently
$23
1 Dec · Eastar Jet
Gimhae International Airport (PUS) → Gimpo International Airport (GMP)
nonstop
found 2 days ago
It is also the cheapest one-way we hold, of any age.
The cheapest dates in December 2026
| Dates | From | Airline | Stops | Found | |
|---|---|---|---|---|---|
| 1 Dec | $23 | Eastar Jet | nonstop | found 2 days ago | Open this trip |
| 3 Dec | $24 | Air Busan | nonstop | found 2 days ago | Open this trip |
| 8 Dec | $24 | Air Busan | nonstop | found 2 days ago | Open this trip |
| 15 Dec | $24 | Air Busan | nonstop | found 2 days ago | Open this trip |
| 11 Dec | $28 | Eastar Jet | nonstop | found 7 days ago | Open this trip |
Every date we hold
8 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 1 Dec | $23 | Eastar Jet | Gimhae International Airport (PUS) → Gimpo International Airport (GMP) | nonstop | found 2 days ago | Open this trip |
| 3 Dec | $24 | Air Busan | Gimhae International Airport (PUS) → Gimpo International Airport (GMP) | nonstop | found 2 days ago | Open this trip |
| 5 Dec | $47 | Eastar Jet | Gimhae International Airport (PUS) → Gimpo International Airport (GMP) | nonstop | found 3 days ago | Open this trip |
| 8 Dec | $24 | Air Busan | Gimhae International Airport (PUS) → Gimpo International Airport (GMP) | nonstop | found 2 days ago | Open this trip |
| 11 Dec | $28 | Eastar Jet | Gimhae International Airport (PUS) → Gimpo International Airport (GMP) | nonstop | found 7 days ago | Open this trip |
| 15 Dec | $24 | Air Busan | Gimhae International Airport (PUS) → Gimpo International Airport (GMP) | nonstop | found 2 days ago | Open this trip |
| 26 Dec | $52 | Eastar Jet | Gimhae International Airport (PUS) → Gimpo International Airport (GMP) | nonstop | found 2 days ago | Open this trip |
| 27 Dec | $41 | Eastar Jet | Gimhae International Airport (PUS) → Gimpo International Airport (GMP) | nonstop | found 2 days ago | Open this trip |
Which month looks cheapest?
December 2026 is the cheapest month — from $23.
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