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Seoul to Jeju flights in December 2026 from $21 GMP, ICN → CJU

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

For departures in December 2026, the cheapest return found recently is $47 with T'way Air, 1 Dec – 1 Dec, found 2 days ago. The cheapest one-way found recently is $21 with Air Seoul, 2 Dec, found 2 days ago.

Return

In December 2026, the cheapest return fare on each of 19 departure dates is usually $53 to $96. Across all 107 departure dates we hold on this route, it is usually $66 to $187. Of the 11 months with enough return fares to compare, 2 are usually cheaper than December 2026.

Cheapest return found recently

$47

1 Dec – 1 Dec · T'way Air

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

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
1 Dec – 1 Dec$47T'way Airout nonstop, back nonstopfound 2 days agoSee prices for these dates
2 Dec – 2 Dec$48T'way Airout nonstop, back nonstopfound 2 days agoSee prices for these dates
5 Dec – 7 Dec$51Jeju Airout nonstop, back nonstopfound 4 days agoSee prices for these dates
7 Dec – 9 Dec$52Air Seoulout nonstop, back nonstopfound 7 days agoSee prices for these dates
14 Dec – 15 Dec$52Jeju Airout nonstop, back nonstopfound 7 days agoSee prices for these dates

Every date we hold

19 departure dates

1 Dec – 1 Dec: $47, found 2 days ago2 Dec – 2 Dec: $48, found 2 days ago3 Dec – 6 Dec: $72, found 6 days ago4 Dec – 7 Dec: $81, found 2 days ago5 Dec – 7 Dec: $51, found 4 days ago7 Dec – 9 Dec: $52, found 7 days ago11 Dec – 13 Dec: $92, found 5 days ago12 Dec – 13 Dec: $69, found 5 days ago13 Dec – 15 Dec: $56, found 2 days ago14 Dec – 15 Dec: $52, found 7 days ago15 Dec – 18 Dec: $54, found 6 days ago18 Dec – 21 Dec: $81, found 2 days ago22 Dec – 1 Jan 2027: $72, found 7 days ago24 Dec – 31 Dec: $123, found 7 days ago25 Dec – 28 Dec: $129, found 4 days ago26 Dec – 27 Dec: $120, found 5 days ago28 Dec – 3 Jan 2027: $105, found 2 days ago29 Dec – 2 Jan 2027: $88, found 6 days ago31 Dec – 7 Jan 2027: $100, found 6 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 1 Dec$47T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 2 days agoSee prices for these dates
2 Dec – 2 Dec$48T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 2 days agoSee prices for these dates
3 Dec – 6 Dec$72Air BusanGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 6 days agoSee prices for these dates
4 Dec – 7 Dec$81T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 2 days agoSee prices for these dates
5 Dec – 7 Dec$51Jeju AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 4 days agoSee prices for these dates
7 Dec – 9 Dec$52Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 7 days agoSee prices for these dates
11 Dec – 13 Dec$92Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 5 days agoSee prices for these dates
12 Dec – 13 Dec$69Jeju AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 5 days agoSee prices for these dates
13 Dec – 15 Dec$56Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 2 days agoSee prices for these dates
14 Dec – 15 Dec$52Jeju AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 7 days agoSee prices for these dates
15 Dec – 18 Dec$54Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 6 days agoSee prices for these dates
18 Dec – 21 Dec$81Jeju AirIncheon International Airport (ICN) → Jeju International Airport (CJU)out nonstop, back nonstopfound 2 days agoSee prices for these dates
22 Dec – 1 Jan 2027$72Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 7 days agoSee prices for these dates
24 Dec – 31 Dec$123Jeju AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 7 days agoSee prices for these dates
25 Dec – 28 Dec$129Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 4 days agoSee prices for these dates
26 Dec – 27 Dec$120Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 5 days agoSee prices for these dates
28 Dec – 3 Jan 2027$105Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 2 days agoSee prices for these dates
29 Dec – 2 Jan 2027$88Air BusanGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 6 days agoSee prices for these dates
31 Dec – 7 Jan 2027$100T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 6 days agoSee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $35.

November 2026From $35Cheapest seen16 departure dates24 Nov – 26 Nov · found 2 days agoSee prices for these datesEvery date in November 2026
December 2026From $4719 departure dates1 Dec – 1 Dec · found 2 days agoSee prices for these dates
January 2027From $438 departure dates25 Jan 2027 – 2 Feb 2027 · found 2 days agoSee prices for these datesEvery date in January 2027
February 2027From $577 departure dates15 Feb 2027 – 18 Feb 2027 · found 6 days agoSee prices for these datesEvery date in February 2027
March 2027From $5718 departure dates1 Mar 2027 – 10 Mar 2027 · found 2 days agoSee prices for these datesEvery date in March 2027
April 2027From $17410 departure dates24 Apr 2027 – 27 Apr 2027 · found 4 days agoSee prices for these datesEvery date in April 2027
May 2027From $1697 departure dates18 May 2027 – 21 May 2027 · found 7 days agoSee prices for these datesEvery date in May 2027
June 2027From $1636 departure dates8 Jun 2027 – 22 Jun 2027 · found 4 days agoSee prices for these dates
July 2027From $1865 departure dates20 Jul 2027 – 24 Jul 2027 · found 5 days agoSee prices for these dates
August 2027From $1876 departure dates30 Aug 2027 – 10 Sept 2027 · found 5 days agoSee prices for these dates
September 2027From $1794 departure dates2 Sept 2027 – 3 Sept 2027 · found 6 days agoSee prices for these dates
October 2027From $2071 departure date5 Oct 2027 – 7 Oct 2027 · found 3 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 25 departure dates is usually $23 to $40. Across all 122 departure dates we hold on this route, it is usually $27 to $88. Of the 10 months with enough one-way fares to compare, 1 is usually cheaper than December 2026.

Cheapest one-way found recently

$21

2 Dec · Air Seoul

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

nonstop

found 2 days ago

Open this tripCheck today's price

Cheapest we hold, of any age

$20

15 Dec · Eastar Jet

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

nonstop

found 3 days ago

Open this tripCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
15 Dec$20Eastar Jetnonstopfound 3 days agoOpen this trip
2 Dec$21Air Seoulnonstopfound 2 days agoOpen this trip
1 Dec$23Parata Airnonstopfound 6 days agoOpen this trip
7 Dec$23Eastar Jetnonstopfound 2 days agoOpen this trip
8 Dec$23T'way Airnonstopfound 2 days agoOpen this trip

Every date we hold

25 departure dates

1 Dec: $23, found 6 days ago2 Dec: $21, found 2 days ago3 Dec: $27, found 4 days ago4 Dec: $43, found 2 days ago5 Dec: $26, found 2 days ago6 Dec: $27, found 7 days ago7 Dec: $23, found 2 days ago8 Dec: $23, found 2 days ago9 Dec: $24, found 6 days ago11 Dec: $44, found 4 days ago13 Dec: $29, found 2 days ago15 Dec: $20, found 3 days ago16 Dec: $24, found 2 days ago17 Dec: $29, found 3 days ago18 Dec: $40, found 3 days ago21 Dec: $23, found 3 days ago23 Dec: $28, found 7 days ago24 Dec: $72, found 7 days ago25 Dec: $66, found 7 days ago26 Dec: $40, found 4 days ago27 Dec: $36, found 3 days ago28 Dec: $27, found 4 days ago29 Dec: $23, found 4 days ago30 Dec: $31, found 4 days ago31 Dec: $72, found 2 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec$23Parata AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 6 days agoOpen this trip
2 Dec$21Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 2 days agoOpen this trip
3 Dec$27T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 4 days agoOpen this trip
4 Dec$43Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 2 days agoOpen this trip
5 Dec$26Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 2 days agoOpen this trip
6 Dec$27Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 7 days agoOpen this trip
7 Dec$23Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 2 days agoOpen this trip
8 Dec$23T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 2 days agoOpen this trip
9 Dec$24Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 6 days agoOpen this trip
11 Dec$44Jeju AirIncheon International Airport (ICN) → Jeju International Airport (CJU)nonstopfound 4 days agoOpen this trip
13 Dec$29T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 2 days agoOpen this trip
15 Dec$20Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 3 days agoOpen this trip
16 Dec$24Jeju AirIncheon International Airport (ICN) → Jeju International Airport (CJU)nonstopfound 2 days agoOpen this trip
17 Dec$29Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 3 days agoOpen this trip
18 Dec$40Jeju AirIncheon International Airport (ICN) → Jeju International Airport (CJU)nonstopfound 3 days agoOpen this trip
21 Dec$23Jeju AirIncheon International Airport (ICN) → Jeju International Airport (CJU)nonstopfound 3 days agoOpen this trip
23 Dec$28Jeju AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 7 days agoOpen this trip
24 Dec$72Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 7 days agoOpen this trip
25 Dec$66Parata AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 7 days agoOpen this trip
26 Dec$40Parata AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 4 days agoOpen this trip
27 Dec$36T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 3 days agoOpen this trip
28 Dec$27Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 4 days agoOpen this trip
29 Dec$23Jeju AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 4 days agoOpen this trip
30 Dec$31Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 4 days agoOpen this trip
31 Dec$72T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 2 days agoOpen this trip

Which month looks cheapest?

November 2026 is the cheapest month — from $18.

November 2026From $18Cheapest seen18 departure dates17 Nov · found 2 days agoOpen this tripEvery date in November 2026
December 2026From $2025 departure dates15 Dec · found 3 days agoOpen this trip
January 2027From $2415 departure dates5 Jan 2027 · found 3 days agoOpen this tripEvery date in January 2027
February 2027From $249 departure dates15 Feb 2027 · found 2 days agoOpen this tripEvery date in February 2027
March 2027From $2720 departure dates8 Mar 2027 · found 6 days agoOpen this tripEvery date in March 2027
April 2027From $8811 departure dates7 Apr 2027 · found 6 days agoOpen this tripEvery date in April 2027
May 2027From $888 departure dates20 May 2027 · found 4 days agoOpen this tripEvery date in May 2027
June 2027From $906 departure dates9 Jun 2027 · found 2 days agoOpen this trip
July 2027From $884 departure dates13 Jul 2027 · found 5 days agoOpen this trip
August 2027From $893 departure dates30 Aug 2027 · found 3 days agoOpen this trip
September 2027From $881 departure date6 Sept 2027 · found 5 days agoOpen this trip
October 2027From $882 departure dates6 Oct 2027 · found 5 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