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

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

For departures in December 2026, the cheapest return found recently is $120 with T'way Air, 7 Dec – 10 Dec, found 13 hours ago. The cheapest one-way found recently is $77 with T'way Air, 3 Dec, found yesterday.

Return

In December 2026, the cheapest return fare on each of 18 departure dates is usually $181 to $262. Across all 67 departure dates we hold on this route, it is usually $189 to $272. Of the 7 months with enough return fares to compare, 3 are usually cheaper than December 2026.

Cheapest return found recently

$120

7 Dec – 10 Dec · T'way Air

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

out nonstop, back nonstop

found 13 hours 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
7 Dec – 10 Dec$120T'way Airout nonstop, back nonstopfound 13 hours agoSee prices for these dates
8 Dec – 15 Dec$174Air Seoulout nonstop, back nonstopfound todaySee prices for these dates
21 Dec – 23 Dec$175T'way Airout nonstop, back nonstopfound 5 days agoSee prices for these dates
1 Dec – 5 Dec$179Peachout nonstop, back nonstopfound 2 days agoSee prices for these dates
14 Dec – 19 Dec$180Peachout nonstop, back nonstopfound todaySee prices for these dates

Every date we hold

18 departure dates

1 Dec – 5 Dec: $179, found 2 days ago3 Dec – 7 Dec: $190, found yesterday5 Dec – 13 Dec: $231, found yesterday6 Dec – 12 Dec: $260, found 2 days ago7 Dec – 10 Dec: $120, found 13 hours ago8 Dec – 15 Dec: $174, found today10 Dec – 13 Dec: $207, found 4 days ago11 Dec – 25 Dec: $278, found yesterday14 Dec – 19 Dec: $180, found today15 Dec – 22 Dec: $184, found yesterday21 Dec – 23 Dec: $175, found 5 days ago22 Dec – 24 Dec: $224, found yesterday23 Dec – 28 Dec: $305, found 5 days ago27 Dec – 30 Dec: $291, found 5 days ago28 Dec – 30 Dec: $244, found 5 days ago29 Dec – 9 Jan 2027: $245, found yesterday30 Dec – 9 Jan 2027: $262, found 3 days ago31 Dec – 5 Jan 2027: $264, found yesterdayDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 5 Dec$179PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
3 Dec – 7 Dec$190Jeju AirIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound yesterdaySee prices for these dates
5 Dec – 13 Dec$231Jin AirIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound yesterdaySee prices for these dates
6 Dec – 12 Dec$260PeachGimpo International Airport (GMP) → Kansai International Airport (KIX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
7 Dec – 10 Dec$120T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 13 hours agoSee prices for these dates
8 Dec – 15 Dec$174Air SeoulIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound todaySee prices for these dates
10 Dec – 13 Dec$207Air SeoulIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 4 days agoSee prices for these dates
11 Dec – 25 Dec$278T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound yesterdaySee prices for these dates
14 Dec – 19 Dec$180PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound todaySee prices for these dates
15 Dec – 22 Dec$184PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound yesterdaySee prices for these dates
21 Dec – 23 Dec$175T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 5 days agoSee prices for these dates
22 Dec – 24 Dec$224PeachGimpo International Airport (GMP) → Kansai International Airport (KIX)out nonstop, back nonstopfound yesterdaySee prices for these dates
23 Dec – 28 Dec$305T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 5 days agoSee prices for these dates
27 Dec – 30 Dec$291Air SeoulIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 5 days agoSee prices for these dates
28 Dec – 30 Dec$244T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 5 days agoSee prices for these dates
29 Dec – 9 Jan 2027$245Asiana AirlinesIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound yesterdaySee prices for these dates
30 Dec – 9 Jan 2027$262Asiana AirlinesIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 3 days agoSee prices for these dates
31 Dec – 5 Jan 2027$264PeachGimpo International Airport (GMP) → Kansai International Airport (KIX)out nonstop, back nonstopfound yesterdaySee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $120.

October 2026From $1886 departure dates21 Oct – 25 Oct · found 4 days agoSee prices for these dates
November 2026From $16719 departure dates24 Nov – 25 Nov · found 5 days agoSee prices for these datesEvery date in November 2026
December 2026From $120Cheapest seen18 departure dates7 Dec – 10 Dec · found 13 hours agoSee prices for these dates
January 2027From $1755 departure dates28 Jan 2027 – 1 Feb 2027 · found 5 days agoSee prices for these datesEvery date in January 2027
February 2027From $2633 departure dates17 Feb 2027 – 20 Feb 2027 · found 2 days agoSee prices for these dates
March 2027From $1708 departure dates7 Mar 2027 – 10 Mar 2027 · found 4 days agoSee prices for these datesEvery date in March 2027
April 2027From $3631 departure date6 Apr 2027 – 17 Apr 2027 · found 6 days agoSee prices for these dates
May 2027From $3084 departure dates23 May 2027 – 31 May 2027 · found 4 days agoSee prices for these dates
June 2027From $2701 departure date23 Jun 2027 – 30 Jun 2027 · found yesterdaySee prices for these dates
July 2027From $3491 departure date1 Jul 2027 – 4 Jul 2027 · found 6 days agoSee prices for these dates
September 2027From $4971 departure date15 Sept 2027 – 17 Sept 2027 · found 3 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 12 departure dates is usually $76 to $92. Across all 69 departure dates we hold on this route, it is usually $73 to $105. Of the 8 months with enough one-way fares to compare, 4 are usually cheaper than December 2026.

Cheapest one-way found recently

$77

3 Dec · T'way Air

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

nonstop

found yesterday

Open this tripCheck today's price

Cheapest we hold, of any age

$58

15 Dec · T'way Air

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

nonstop

found 5 days ago

Open this tripCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
15 Dec$58T'way Airnonstopfound 5 days agoOpen this trip
8 Dec$64T'way Airnonstopfound 4 days agoOpen this trip
1 Dec$74Peachnonstopfound 5 days agoOpen this trip
3 Dec$77T'way Airnonstopfound yesterdayOpen this trip
23 Dec$83T'way Airnonstopfound 5 days agoOpen this trip

Every date we hold

12 departure dates

1 Dec: $74, found 5 days ago3 Dec: $77, found yesterday5 Dec: $87, found 5 days ago8 Dec: $64, found 4 days ago13 Dec: $92, found 5 hours ago15 Dec: $58, found 5 days ago17 Dec: $92, found 4 days ago18 Dec: $103, found 3 days ago19 Dec: $90, found 5 days ago20 Dec: $109, found 6 days ago23 Dec: $83, found 5 days ago29 Dec: $92, found yesterdayDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec$74PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 5 days agoOpen this trip
3 Dec$77T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound yesterdayOpen this trip
5 Dec$87Eastar JetIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 5 days agoOpen this trip
8 Dec$64T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 4 days agoOpen this trip
13 Dec$92Parata AirIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 5 hours agoOpen this trip
15 Dec$58T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 5 days agoOpen this trip
17 Dec$92Eastar JetIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 4 days agoOpen this trip
18 Dec$103Jeju AirIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 3 days agoOpen this trip
19 Dec$90Eastar JetIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 5 days agoOpen this trip
20 Dec$109Jeju AirGimpo International Airport (GMP) → Kansai International Airport (KIX)nonstopfound 6 days agoOpen this trip
23 Dec$83T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 5 days agoOpen this trip
29 Dec$92T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound yesterdayOpen this trip

Which month looks cheapest?

October 2026 is the cheapest month — from $48.

October 2026From $48Cheapest seen5 departure dates20 Oct · found 4 days agoOpen this trip
November 2026From $578 departure dates17 Nov · found 5 days agoOpen this tripEvery date in November 2026
December 2026From $5812 departure dates15 Dec · found 5 days agoOpen this trip
January 2027From $5911 departure dates28 Jan 2027 · found 5 days agoOpen this tripEvery date in January 2027
February 2027From $696 departure dates18 Feb 2027 · found 4 days agoOpen this trip
March 2027From $5515 departure dates8 Mar 2027 · found 4 days agoOpen this tripEvery date in March 2027
April 2027From $1214 departure dates28 Apr 2027 · found 3 days agoOpen this trip
May 2027From $1202 departure dates11 May 2027 · found yesterdayOpen this trip
June 2027From $1256 departure dates23 Jun 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