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Osaka to Seoul in December 2026 ITM, KIX, UKB → GMP, ICN

Itami Airport (ITM), Kansai International Airport (KIX), Kobe Airport (UKB) → Gimpo International Airport (GMP), Incheon International Airport (ICN)

For departures in December 2026, the cheapest return found recently is $322 with Air Seoul, 25 Dec – 25 Dec, found today. The cheapest one-way found recently is $115 with Jeju Air, 2 Dec, found yesterday.

Return

In December 2026, the cheapest return fare on each of 5 departure dates is usually $222 to $322. Across all 24 departure dates we hold on this route, it is usually $204 to $296. Of the 4 months with enough return fares to compare, December 2026 is usually the most expensive.

Cheapest return found recently

$322

25 Dec – 25 Dec · Air Seoul

Kansai International Airport (KIX) → Incheon International Airport (ICN)

out nonstop, back nonstop

found today

See prices for these datesCheck today's price

Cheapest we hold, of any age

$184

16 Dec – 19 Dec · Peach

Kansai International Airport (KIX) → Incheon International Airport (ICN)

out nonstop, back nonstop

found 6 days ago

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
16 Dec – 19 Dec$184Peachout nonstop, back nonstopfound 6 days agoSee prices for these dates
5 Dec – 12 Dec$222Eastar Jetout nonstop, back nonstopfound 2 days agoSee prices for these dates
30 Dec – 7 Jan 2027$278Jeju Airout nonstop, back nonstopfound 4 days agoSee prices for these dates
25 Dec – 25 Dec$322Air Seoulout nonstop, back nonstopfound todaySee prices for these dates
28 Dec – 28 Dec$335T'way Airout nonstop, back nonstopfound 5 days agoSee prices for these dates

Every date we hold

5 departure dates

5 Dec – 12 Dec: $222, found 2 days ago16 Dec – 19 Dec: $184, found 6 days ago25 Dec – 25 Dec: $322, found today28 Dec – 28 Dec: $335, found 5 days ago30 Dec – 7 Jan 2027: $278, found 4 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
5 Dec – 12 Dec$222Eastar JetKansai International Airport (KIX) → Incheon International Airport (ICN)out nonstop, back nonstopfound 2 days agoSee prices for these dates
16 Dec – 19 Dec$184PeachKansai International Airport (KIX) → Incheon International Airport (ICN)out nonstop, back nonstopfound 6 days agoSee prices for these dates
25 Dec – 25 Dec$322Air SeoulKansai International Airport (KIX) → Incheon International Airport (ICN)out nonstop, back nonstopfound todaySee prices for these dates
28 Dec – 28 Dec$335T'way AirKansai International Airport (KIX) → Incheon International Airport (ICN)out nonstop, back nonstopfound 5 days agoSee prices for these dates
30 Dec – 7 Jan 2027$278Jeju AirKansai International Airport (KIX) → Incheon International Airport (ICN)out nonstop, back nonstopfound 4 days agoSee prices for these dates

Which month looks cheapest?

March 2027 is the cheapest month — from $175.

October 2026From $1823 departure dates21 Oct – 4 Nov · found 5 hours agoSee prices for these dates
November 2026From $1999 departure dates19 Nov – 1 Dec · found 2 days agoSee prices for these datesEvery date in November 2026
December 2026From $1845 departure dates16 Dec – 19 Dec · found 6 days agoSee prices for these dates
January 2027From $1763 departure dates14 Jan 2027 – 24 Jan 2027 · found 5 days agoSee prices for these datesEvery date in January 2027
February 2027From $2731 departure date5 Feb 2027 – 7 Feb 2027 · found 2 days agoSee prices for these dates
March 2027From $175Cheapest seen1 departure date8 Mar 2027 – 11 Mar 2027 · found 4 days agoSee prices for these datesEvery date in March 2027
April 2027From $2942 departure dates10 Apr 2027 – 12 Apr 2027 · found 3 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 11 departure dates is usually $106 to $145. Across all 56 departure dates we hold on this route, it is usually $112 to $155. Of the 6 months with enough one-way fares to compare, December 2026 is usually the cheapest.

Cheapest one-way found recently

$115

2 Dec · Jeju Air

Kansai International Airport (KIX) → Incheon International Airport (ICN)

nonstop

found yesterday

Open this tripCheck today's price

Cheapest we hold, of any age

$34

11 Dec · Eastar Jet

Kansai International Airport (KIX) → Incheon International Airport (ICN)

nonstop

found 6 days ago

Open this tripCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
11 Dec$34Eastar Jetnonstopfound 6 days agoOpen this trip
22 Dec$99Peachnonstopfound 6 days agoOpen this trip
15 Dec$105Peachnonstopfound 5 days agoOpen this trip
21 Dec$107Peachnonstopfound 6 days agoOpen this trip
23 Dec$107Peachnonstopfound 6 days agoOpen this trip

Every date we hold

11 departure dates

2 Dec: $115, found yesterday11 Dec: $34, found 6 days ago12 Dec: $124, found yesterday15 Dec: $105, found 5 days ago18 Dec: $114, found 3 days ago21 Dec: $107, found 6 days ago22 Dec: $99, found 6 days ago23 Dec: $107, found 6 days ago25 Dec: $166, found today29 Dec: $212, found 6 days ago30 Dec: $169, found 6 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
2 Dec$115Jeju AirKansai International Airport (KIX) → Incheon International Airport (ICN)nonstopfound yesterdayOpen this trip
11 Dec$34Eastar JetKansai International Airport (KIX) → Incheon International Airport (ICN)nonstopfound 6 days agoOpen this trip
12 Dec$124Eastar JetKansai International Airport (KIX) → Incheon International Airport (ICN)nonstopfound yesterdayOpen this trip
15 Dec$105PeachKansai International Airport (KIX) → Incheon International Airport (ICN)nonstopfound 5 days agoOpen this trip
18 Dec$114Jeju AirKansai International Airport (KIX) → Gimpo International Airport (GMP)nonstopfound 3 days agoOpen this trip
21 Dec$107PeachKansai International Airport (KIX) → Incheon International Airport (ICN)nonstopfound 6 days agoOpen this trip
22 Dec$99PeachKansai International Airport (KIX) → Incheon International Airport (ICN)nonstopfound 6 days agoOpen this trip
23 Dec$107PeachKansai International Airport (KIX) → Gimpo International Airport (GMP)nonstopfound 6 days agoOpen this trip
25 Dec$166Jeju AirKobe Airport (UKB) → Incheon International Airport (ICN)nonstopfound todayOpen this trip
29 Dec$212T'way AirKobe Airport (UKB) → Incheon International Airport (ICN)nonstopfound 6 days agoOpen this trip
30 Dec$169Jeju AirKansai International Airport (KIX) → Incheon International Airport (ICN)nonstopfound 6 days agoOpen this trip

Which month looks cheapest?

December 2026 is the cheapest month — from $34.

October 2026From $1531 departure date29 Oct · found 2 days agoOpen this trip
December 2026From $34Cheapest seen11 departure dates11 Dec · found 6 days agoOpen this trip
January 2027From $9214 departure dates7 Jan 2027 · found 6 days agoOpen this tripEvery date in January 2027
February 2027From $1592 departure dates12 Feb 2027 · found 3 days agoOpen this trip
March 2027From $10513 departure dates4 Mar 2027 · found 4 days agoOpen this tripEvery date in March 2027
April 2027From $1535 departure dates9 Apr 2027 · found 6 days agoOpen this trip
May 2027From $1524 departure dates11 May 2027 · found yesterdayOpen this trip
June 2027From $1482 departure dates2 Jun 2027 · found todayOpen this trip
July 2027From $1641 departure date9 Jul 2027 · found 4 days agoOpen this trip
September 2027From $1143 departure dates24 Sept 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