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Seoul to Busan flights in December 2026 from $28 GMP, ICN → PUS

Gimpo International Airport (GMP), Incheon International Airport (ICN) → Gimhae International Airport (PUS)

For departures in December 2026, the cheapest return found recently is $68 with Air Busan, 8 Dec – 21 Dec, found 2 days ago. The cheapest one-way found recently is $28 with Jeju Air, 8 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

$68

8 Dec – 21 Dec · Air Busan

Gimpo International Airport (GMP) → Gimhae International Airport (PUS)

out nonstop, back nonstop

found 2 days ago

See prices for these datesCheck today's price

It is also the cheapest return we hold, of any age.

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
8 Dec – 21 Dec$68Air Busanout nonstop, back nonstopfound 2 days agoSee prices for these dates
11 Dec – 20 Dec$103Eastar Jetout nonstop, back nonstopfound 5 days agoSee prices for these dates

Every date we hold

2 departure dates

8 Dec – 21 Dec: $68, found 2 days ago11 Dec – 20 Dec: $103, found 5 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
8 Dec – 21 Dec$68Air BusanGimpo International Airport (GMP) → Gimhae International Airport (PUS)out nonstop, back nonstopfound 2 days agoSee prices for these dates
11 Dec – 20 Dec$103Eastar JetGimpo International Airport (GMP) → Gimhae International Airport (PUS)out nonstop, back nonstopfound 5 days agoSee prices for these dates

Which month looks cheapest?

January 2027 is the cheapest month — from $61.

November 2026From $667 departure dates23 Nov – 27 Nov · found 6 days agoSee prices for these datesEvery date in November 2026
December 2026From $682 departure dates8 Dec – 21 Dec · found 2 days agoSee prices for these dates
January 2027From $61Cheapest seen5 departure dates13 Jan 2027 – 15 Jan 2027 · found 2 days agoSee prices for these dates
February 2027From $973 departure dates21 Feb 2027 – 7 Mar 2027 · found 2 days agoSee prices for these datesEvery date in February 2027
March 2027From $813 departure dates10 Mar 2027 – 14 Mar 2027 · found 5 days agoSee prices for these datesEvery date in March 2027
April 2027From $1525 departure dates26 Apr 2027 – 28 Apr 2027 · found 4 days agoSee prices for these dates
May 2027From $1684 departure dates24 May 2027 – 25 May 2027 · found 5 days agoSee prices for these dates
June 2027From $1773 departure dates11 Jun 2027 – 14 Jun 2027 · found 6 days agoSee prices for these dates
July 2027From $1683 departure dates12 Jul 2027 – 21 Jul 2027 · found 5 days agoSee prices for these dates
September 2027From $1773 departure dates22 Sept 2027 – 25 Sept 2027 · found 6 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 9 departure dates is usually $29 to $45. Across all 54 departure dates we hold on this route, it is usually $33 to $86. Of the 7 months with enough one-way fares to compare, December 2026 is usually the cheapest.

Cheapest one-way found recently

$28

8 Dec · Jeju Air

Gimpo International Airport (GMP) → Gimhae International Airport (PUS)

nonstop

found 2 days ago

Open this tripCheck today's price

It is also the cheapest one-way we hold, of any age.

FareTell may earn a commission when you book through a partner.

The cheapest dates in December 2026

DatesFromAirlineStopsFound
8 Dec$28Jeju Airnonstopfound 2 days agoOpen this trip
14 Dec$29Jeju Airnonstopfound 4 days agoOpen this trip
17 Dec$29Jeju Airnonstopfound 3 days agoOpen this trip
23 Dec$29Air Busannonstopfound 2 days agoOpen this trip
30 Dec$30Jeju Airnonstopfound 3 days agoOpen this trip

Every date we hold

9 departure dates

4 Dec: $55, found 6 days ago8 Dec: $28, found 2 days ago13 Dec: $45, found 5 days ago14 Dec: $29, found 4 days ago17 Dec: $29, found 3 days ago19 Dec: $53, found 3 days ago20 Dec: $32, found 2 days ago23 Dec: $29, found 2 days ago30 Dec: $30, found 3 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
4 Dec$55Eastar JetGimpo International Airport (GMP) → Gimhae International Airport (PUS)nonstopfound 6 days agoOpen this trip
8 Dec$28Jeju AirGimpo International Airport (GMP) → Gimhae International Airport (PUS)nonstopfound 2 days agoOpen this trip
13 Dec$45Air BusanGimpo International Airport (GMP) → Gimhae International Airport (PUS)nonstopfound 5 days agoOpen this trip
14 Dec$29Jeju AirGimpo International Airport (GMP) → Gimhae International Airport (PUS)nonstopfound 4 days agoOpen this trip
17 Dec$29Jeju AirGimpo International Airport (GMP) → Gimhae International Airport (PUS)nonstopfound 3 days agoOpen this trip
19 Dec$53Air BusanGimpo International Airport (GMP) → Gimhae International Airport (PUS)nonstopfound 3 days agoOpen this trip
20 Dec$32Air BusanGimpo International Airport (GMP) → Gimhae International Airport (PUS)nonstopfound 2 days agoOpen this trip
23 Dec$29Air BusanGimpo International Airport (GMP) → Gimhae International Airport (PUS)nonstopfound 2 days agoOpen this trip
30 Dec$30Jeju AirGimpo International Airport (GMP) → Gimhae International Airport (PUS)nonstopfound 3 days agoOpen this trip

Which month looks cheapest?

December 2026 is the cheapest month — from $28.

November 2026From $305 departure dates17 Nov · found 3 days agoOpen this tripEvery date in November 2026
December 2026From $28Cheapest seen9 departure dates8 Dec · found 2 days agoOpen this trip
January 2027From $292 departure dates6 Jan 2027 · found 3 days agoOpen this trip
February 2027From $337 departure dates16 Feb 2027 · found 3 days agoOpen this tripEvery date in February 2027
March 2027From $2911 departure dates11 Mar 2027 · found 2 days agoOpen this tripEvery date in March 2027
April 2027From $856 departure dates8 Apr 2027 · found 5 days agoOpen this trip
May 2027From $766 departure dates6 May 2027 · found 7 days agoOpen this trip
June 2027From $842 departure dates1 Jun 2027 · found 6 days agoOpen this trip
July 2027From $853 departure dates14 Jul 2027 · found 2 days agoOpen this trip
August 2027From $1031 departure date13 Aug 2027 · found 2 days agoOpen this trip
October 2027From $782 departure dates21 Oct 2027 · found 6 days agoOpen this trip

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