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Jeju to Seoul in December 2026 CJU → GMP, ICN

Jeju International Airport (CJU) → Gimpo International Airport (GMP), Incheon International Airport (ICN)

For departures in December 2026, the cheapest return found recently is $67 with Jeju Air, 11 Dec – 20 Dec, found 4 days ago. The cheapest one-way found recently is $23 with Eastar Jet, 15 Dec, found yesterday.

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

$67

11 Dec – 20 Dec · Jeju Air

Jeju International Airport (CJU) → Gimpo International Airport (GMP)

out nonstop, back nonstop

found 4 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
11 Dec – 20 Dec$67Jeju Airout nonstop, back nonstopfound 4 days agoSee prices for these dates
19 Dec – 19 Dec$70Jeju Airout nonstop, back nonstopfound 4 days agoSee prices for these dates

Every date we hold

2 departure dates

11 Dec – 20 Dec: $67, found 4 days ago19 Dec – 19 Dec: $70, found 4 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
11 Dec – 20 Dec$67Jeju AirJeju International Airport (CJU) → Gimpo International Airport (GMP)out nonstop, back nonstopfound 4 days agoSee prices for these dates
19 Dec – 19 Dec$70Jeju AirJeju International Airport (CJU) → Gimpo International Airport (GMP)out nonstop, back nonstopfound 4 days agoSee prices for these dates

Which month looks cheapest?

October 2026 is the cheapest month — from $46.

October 2026From $46Cheapest seen4 departure dates22 Oct – 26 Oct · found 4 days agoSee prices for these dates
December 2026From $672 departure dates11 Dec – 20 Dec · found 4 days agoSee prices for these dates
April 2027From $1831 departure date10 Apr 2027 – 17 Apr 2027 · found yesterdaySee prices for these dates
May 2027From $1981 departure date22 May 2027 – 29 May 2027 · found todaySee prices for these dates
June 2027From $2181 departure date11 Jun 2027 – 25 Jun 2027 · found 2 days agoSee prices for these dates
August 2027From $2321 departure date12 Aug 2027 – 14 Aug 2027 · found 4 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 13 departure dates is usually $22 to $32. Across all 60 departure dates we hold on this route, it is usually $33 to $88. Of the 9 months with enough one-way fares to compare, December 2026 is usually the cheapest.

Cheapest one-way found recently

$23

15 Dec · Eastar Jet

Jeju International Airport (CJU) → Gimpo International Airport (GMP)

nonstop

found yesterday

Open this tripCheck today's price

Cheapest we hold, of any age

$21

3 Dec · Air Seoul

Jeju International Airport (CJU) → Gimpo International Airport (GMP)

nonstop

found 5 days ago

Open this tripCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
3 Dec$21Air Seoulnonstopfound 5 days agoOpen this trip
2 Dec$21Eastar Jetnonstopfound 2 days agoOpen this trip
8 Dec$22Jeju Airnonstopfound 5 days agoOpen this trip
17 Dec$22Jeju Airnonstopfound 5 days agoOpen this trip
1 Dec$23Jin Airnonstopfound 2 days agoOpen this trip

Every date we hold

13 departure dates

1 Dec: $23, found 2 days ago2 Dec: $21, found 2 days ago3 Dec: $21, found 5 days ago4 Dec: $30, found 5 days ago8 Dec: $22, found 5 days ago9 Dec: $24, found yesterday14 Dec: $42, found 2 days ago15 Dec: $23, found yesterday16 Dec: $24, found 2 days ago17 Dec: $22, found 5 days ago19 Dec: $32, found 4 days ago20 Dec: $50, found 6 days ago28 Dec: $68, found 5 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec$23Jin AirJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound 2 days agoOpen this trip
2 Dec$21Eastar JetJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound 2 days agoOpen this trip
3 Dec$21Air SeoulJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound 5 days agoOpen this trip
4 Dec$30Air SeoulJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound 5 days agoOpen this trip
8 Dec$22Jeju AirJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound 5 days agoOpen this trip
9 Dec$24Jeju AirJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound yesterdayOpen this trip
14 Dec$42Eastar JetJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound 2 days agoOpen this trip
15 Dec$23Eastar JetJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound yesterdayOpen this trip
16 Dec$24Eastar JetJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound 2 days agoOpen this trip
17 Dec$22Jeju AirJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound 5 days agoOpen this trip
19 Dec$32Jeju AirJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound 4 days agoOpen this trip
20 Dec$50T'way AirJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound 6 days agoOpen this trip
28 Dec$68Jeju AirJeju International Airport (CJU) → Gimpo International Airport (GMP)nonstopfound 5 days agoOpen this trip

Which month looks cheapest?

December 2026 is the cheapest month — from $21.

October 2026From $233 departure dates22 Oct · found 4 days agoOpen this trip
November 2026From $3014 departure dates3 Nov · found 5 days agoOpen this tripEvery date in November 2026
December 2026From $21Cheapest seen13 departure dates3 Dec · found 5 days agoOpen this trip
January 2027From $253 departure dates7 Jan 2027 · found yesterdayOpen this trip
February 2027From $213 departure dates2 Feb 2027 · found yesterdayOpen this trip
March 2027From $372 departure dates17 Mar 2027 · found 3 days agoOpen this trip
April 2027From $886 departure dates7 Apr 2027 · found 4 days agoOpen this trip
May 2027From $884 departure dates26 May 2027 · found 6 days agoOpen this trip
June 2027From $855 departure dates9 Jun 2027 · found yesterdayOpen this trip
July 2027From $885 departure dates12 Jul 2027 · found 6 days agoOpen this trip
August 2027From $892 departure dates25 Aug 2027 · found yesterdayOpen 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