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Seoul to Jeju in October 2026 GMP, ICN → CJU

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

For departures in October 2026, the cheapest return found recently is $52 with Air Seoul, 27 Oct – 29 Oct, found yesterday. The cheapest one-way found recently is $17 with Eastar Jet, 21 Oct, found 4 hours ago.

Return

In October 2026, the cheapest return fare on each of 11 departure dates is usually $56 to $78. Across all 82 departure dates we hold on this route, it is usually $60 to $125. Of the 9 months with enough return fares to compare, October 2026 is usually the cheapest.

Cheapest return found recently

$52

27 Oct – 29 Oct · Air Seoul

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

out nonstop, back nonstop

found yesterday

See prices for these datesCheck today's price

Cheapest we hold, of any age

$38

20 Oct – 22 Oct · Eastar Jet

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

out nonstop, back nonstop

found 6 days ago

See prices for these datesCheck today's price

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The cheapest dates in October 2026

DatesFromAirlineStopsFound
20 Oct – 22 Oct$38Eastar Jetout nonstop, back nonstopfound 6 days agoSee prices for these dates
21 Oct – 22 Oct$47T'way Airout nonstop, back nonstopfound 2 days agoSee prices for these dates
27 Oct – 29 Oct$52Air Seoulout nonstop, back nonstopfound yesterdaySee prices for these dates
26 Oct – 29 Oct$60Jeju Airout nonstop, back nonstopfound 3 days agoSee prices for these dates
22 Oct – 29 Oct$65Korean Airout nonstop, back nonstopfound yesterdaySee prices for these dates

Every date we hold

11 departure dates

20 Oct – 22 Oct: $38, found 6 days ago21 Oct – 22 Oct: $47, found 2 days ago22 Oct – 29 Oct: $65, found yesterday23 Oct – 26 Oct: $102, found yesterday24 Oct – 27 Oct: $73, found 6 days ago26 Oct – 29 Oct: $60, found 3 days ago27 Oct – 29 Oct: $52, found yesterday28 Oct – 30 Oct: $83, found 5 days ago29 Oct – 3 Nov: $73, found today30 Oct – 1 Nov: $125, found 3 days ago31 Oct – 3 Nov: $69, found 6 days agoOct
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
20 Oct – 22 Oct$38Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 6 days agoSee prices for these dates
21 Oct – 22 Oct$47T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 2 days agoSee prices for these dates
22 Oct – 29 Oct$65Korean AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound yesterdaySee prices for these dates
23 Oct – 26 Oct$102Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound yesterdaySee prices for these dates
24 Oct – 27 Oct$73Jeju AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 6 days agoSee prices for these dates
26 Oct – 29 Oct$60Jeju AirIncheon International Airport (ICN) → Jeju International Airport (CJU)out nonstop, back nonstopfound 3 days agoSee prices for these dates
27 Oct – 29 Oct$52Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound yesterdaySee prices for these dates
28 Oct – 30 Oct$83Air SeoulGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 5 days agoSee prices for these dates
29 Oct – 3 Nov$73Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound todaySee prices for these dates
30 Oct – 1 Nov$125T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 3 days agoSee prices for these dates
31 Oct – 3 Nov$69Parata AirGimpo International Airport (GMP) → Jeju International Airport (CJU)out nonstop, back nonstopfound 6 days agoSee prices for these dates

Which month looks cheapest?

October 2026 is the cheapest month — from $38.

October 2026From $38Cheapest seen11 departure dates20 Oct – 22 Oct · found 6 days agoSee prices for these dates
November 2026From $4626 departure dates2 Nov – 4 Nov · found todaySee prices for these datesEvery date in November 2026
December 2026From $4815 departure dates1 Dec – 8 Dec · found yesterdaySee prices for these datesEvery date in December 2026
January 2027From $476 departure dates5 Jan 2027 – 7 Jan 2027 · found 4 days agoSee prices for these datesEvery date in January 2027
February 2027From $1211 departure date20 Feb 2027 – 20 Feb 2027 · found yesterdaySee prices for these datesEvery date in February 2027
March 2027From $446 departure dates9 Mar 2027 – 11 Mar 2027 · found 14 hours agoSee prices for these datesEvery date in March 2027
April 2027From $1635 departure dates12 Apr 2027 – 13 Apr 2027 · found 6 days agoSee prices for these dates
May 2027From $1733 departure dates25 May 2027 – 28 May 2027 · found yesterdaySee prices for these dates
June 2027From $1772 departure dates16 Jun 2027 – 23 Jun 2027 · found 3 days agoSee prices for these datesEvery date in June 2027
July 2027From $1763 departure dates5 Jul 2027 – 8 Jul 2027 · found 6 days agoSee prices for these dates
August 2027From $1963 departure dates28 Aug 2027 – 4 Sept 2027 · found 5 days agoSee prices for these dates
September 2027From $2041 departure date8 Sept 2027 – 11 Sept 2027 · found 4 days agoSee prices for these dates

One-way

In October 2026, the cheapest one-way fare on each of 11 departure dates is usually $18 to $33. Across all 103 departure dates we hold on this route, it is usually $23 to $63. Of the 10 months with enough one-way fares to compare, 1 is usually cheaper than October 2026.

Cheapest one-way found recently

$17

21 Oct · Eastar Jet

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

nonstop

found 4 hours ago

Open this tripCheck today's price

Cheapest we hold, of any age

$14

20 Oct · Eastar Jet

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

nonstop

found 2 days ago

Open this tripCheck today's price

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The cheapest dates in October 2026

DatesFromAirlineStopsFound
20 Oct$14Eastar Jetnonstopfound 2 days agoOpen this trip
21 Oct$17Eastar Jetnonstopfound 4 hours agoOpen this trip
27 Oct$17Korean Airnonstopfound 3 days agoOpen this trip
28 Oct$19Jeju Airnonstopfound 4 days agoOpen this trip
26 Oct$20T'way Airnonstopfound 3 days agoOpen this trip

Every date we hold

11 departure dates

20 Oct: $14, found 2 days ago21 Oct: $17, found 4 hours ago22 Oct: $29, found 5 days ago24 Oct: $35, found 3 days ago25 Oct: $44, found 6 days ago26 Oct: $20, found 3 days ago27 Oct: $17, found 3 days ago28 Oct: $19, found 4 days ago29 Oct: $31, found 6 days ago30 Oct: $56, found 4 days ago31 Oct: $28, found 4 days agoOct
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
20 Oct$14Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 2 days agoOpen this trip
21 Oct$17Eastar JetGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 4 hours agoOpen this trip
22 Oct$29T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 5 days agoOpen this trip
24 Oct$35Jeju AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 3 days agoOpen this trip
25 Oct$44Jeju AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 6 days agoOpen this trip
26 Oct$20T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 3 days agoOpen this trip
27 Oct$17Korean AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 3 days agoOpen this trip
28 Oct$19Jeju AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 4 days agoOpen this trip
29 Oct$31T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 6 days agoOpen this trip
30 Oct$56T'way AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 4 days agoOpen this trip
31 Oct$28Jeju AirGimpo International Airport (GMP) → Jeju International Airport (CJU)nonstopfound 4 days agoOpen this trip

Which month looks cheapest?

October 2026 is the cheapest month — from $14.

October 2026From $14Cheapest seen11 departure dates20 Oct · found 2 days agoOpen this trip
November 2026From $1925 departure dates3 Nov · found todayOpen this tripEvery date in November 2026
December 2026From $2018 departure dates8 Dec · found 5 days agoOpen this tripEvery date in December 2026
January 2027From $2110 departure dates27 Jan 2027 · found 6 days agoOpen this tripEvery date in January 2027
February 2027From $229 departure dates17 Feb 2027 · found todayOpen this tripEvery date in February 2027
March 2027From $268 departure dates16 Mar 2027 · found todayOpen this tripEvery date in March 2027
April 2027From $855 departure dates6 Apr 2027 · found 2 days agoOpen this trip
May 2027From $884 departure dates3 May 2027 · found 4 days agoOpen this trip
June 2027From $837 departure dates16 Jun 2027 · found 4 days agoOpen this tripEvery date in June 2027
July 2027From $884 departure dates12 Jul 2027 · found 6 days agoOpen this trip
August 2027From $1181 departure date12 Aug 2027 · found 2 days agoOpen this trip
September 2027From $881 departure date8 Sept 2027 · found 4 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