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Seoul to Osaka flights in December 2026 from $65 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 $156 with Peach, 2 Dec – 9 Dec, found yesterday. The cheapest one-way found recently is $65 with T'way Air, 1 Dec, found 2 days ago.

Return

In December 2026, the cheapest return fare on each of 19 departure dates is usually $188 to $269. Across all 71 departure dates we hold on this route, it is usually $208 to $280. Of the 7 months with enough return fares to compare, 1 is usually cheaper than December 2026.

Cheapest return found recently

$156

2 Dec – 9 Dec · Peach

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

out nonstop, back nonstop

found yesterday

See prices for these datesCheck today's price

Cheapest we hold, of any age

$144

1 Dec – 9 Dec · Peach

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

out nonstop, back nonstop

found 7 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
1 Dec – 9 Dec$144Peachout nonstop, back nonstopfound 7 days agoSee prices for these dates
16 Dec – 18 Dec$144Peachout nonstop, back nonstopfound 6 days agoSee prices for these dates
2 Dec – 9 Dec$156Peachout nonstop, back nonstopfound yesterdaySee prices for these dates
8 Dec – 15 Dec$174Peachout nonstop, back nonstopfound 2 days agoSee prices for these dates
21 Dec – 24 Dec$185Peachout nonstop, back nonstopfound 5 days agoSee prices for these dates

Every date we hold

19 departure dates

1 Dec – 9 Dec: $144, found 7 days ago2 Dec – 9 Dec: $156, found yesterday4 Dec – 9 Dec: $211, found 3 days ago5 Dec – 6 Dec: $281, found 4 days ago8 Dec – 15 Dec: $174, found 2 days ago10 Dec – 14 Dec: $229, found 2 days ago11 Dec – 14 Dec: $267, found 3 days ago14 Dec – 17 Dec: $191, found 3 days ago16 Dec – 18 Dec: $144, found 6 days ago19 Dec – 24 Dec: $270, found 4 days ago20 Dec – 24 Dec: $220, found 4 days ago21 Dec – 24 Dec: $185, found 5 days ago22 Dec – 29 Dec: $274, found 2 days ago23 Dec – 14 Jan 2027: $192, found 3 days ago24 Dec – 29 Dec: $274, found 4 days ago25 Dec – 30 Dec: $285, found 4 days ago26 Dec – 31 Dec: $237, found 5 days ago27 Dec – 31 Dec: $233, found 5 days ago28 Dec – 31 Dec: $235, 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 – 9 Dec$144PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 7 days agoSee prices for these dates
2 Dec – 9 Dec$156PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound yesterdaySee prices for these dates
4 Dec – 9 Dec$211Jeju AirIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 3 days agoSee prices for these dates
5 Dec – 6 Dec$281Asiana AirlinesIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 4 days agoSee prices for these dates
8 Dec – 15 Dec$174PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
10 Dec – 14 Dec$229T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
11 Dec – 14 Dec$267PeachGimpo International Airport (GMP) → Kansai International Airport (KIX)out nonstop, back nonstopfound 3 days agoSee prices for these dates
14 Dec – 17 Dec$191PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 3 days agoSee prices for these dates
16 Dec – 18 Dec$144PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 6 days agoSee prices for these dates
19 Dec – 24 Dec$270PeachGimpo International Airport (GMP) → Kansai International Airport (KIX)out nonstop, back nonstopfound 4 days agoSee prices for these dates
20 Dec – 24 Dec$220PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 4 days agoSee prices for these dates
21 Dec – 24 Dec$185PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 5 days agoSee prices for these dates
22 Dec – 29 Dec$274PeachGimpo International Airport (GMP) → Kansai International Airport (KIX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
23 Dec – 14 Jan 2027$192Jeju AirGimpo International Airport (GMP) → Kansai International Airport (KIX)out nonstop, back nonstopfound 3 days agoSee prices for these dates
24 Dec – 29 Dec$274PeachGimpo International Airport (GMP) → Kansai International Airport (KIX)out nonstop, back nonstopfound 4 days agoSee prices for these dates
25 Dec – 30 Dec$285PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 4 days agoSee prices for these dates
26 Dec – 31 Dec$237Air SeoulIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 5 days agoSee prices for these dates
27 Dec – 31 Dec$233PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 5 days agoSee prices for these dates
28 Dec – 31 Dec$235Air SeoulIncheon International Airport (ICN) → Kansai International Airport (KIX)out nonstop, back nonstopfound 5 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $144.

November 2026From $17111 departure dates30 Nov – 10 Dec · found 3 days agoSee prices for these datesEvery date in November 2026
December 2026From $144Cheapest seen19 departure dates1 Dec – 9 Dec · found 7 days agoSee prices for these dates
January 2027From $18711 departure dates28 Jan 2027 – 1 Feb 2027 · found 4 days agoSee prices for these datesEvery date in January 2027
February 2027From $2259 departure dates15 Feb 2027 – 24 Feb 2027 · found 6 days agoSee prices for these datesEvery date in February 2027
March 2027From $17213 departure dates17 Mar 2027 – 24 Mar 2027 · found 8 days agoSee prices for these datesEvery date in March 2027
April 2027From $2813 departure dates14 Apr 2027 – 29 Apr 2027 · found 2 days agoSee prices for these dates
May 2027From $2754 departure dates12 May 2027 – 18 May 2027 · found 3 days agoSee prices for these dates
June 2027From $3661 departure date2 Jun 2027 – 5 Jun 2027 · found 5 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 12 departure dates is usually $57 to $93. Across all 56 departure dates we hold on this route, it is usually $74 to $135. Of the 7 months with enough one-way fares to compare, December 2026 is usually the cheapest.

Cheapest one-way found recently

$65

1 Dec · T'way Air

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

nonstop

found 2 days ago

Open this tripCheck today's price

Cheapest we hold, of any age

$51

8 Dec · Peach

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
8 Dec$51Peachnonstopfound 5 days agoOpen this trip
15 Dec$52Peachnonstopfound 4 days agoOpen this trip
3 Dec$56Peachnonstopfound 6 days agoOpen this trip
22 Dec$57Peachnonstopfound 5 days agoOpen this trip
10 Dec$59Peachnonstopfound 3 days agoOpen this trip

Every date we hold

12 departure dates

1 Dec: $65, found 2 days ago3 Dec: $56, found 6 days ago8 Dec: $51, found 5 days ago10 Dec: $59, found 3 days ago15 Dec: $52, found 4 days ago18 Dec: $116, found 4 days ago20 Dec: $99, found 4 days ago22 Dec: $57, found 5 days ago24 Dec: $66, found 2 days ago26 Dec: $91, found 4 days ago29 Dec: $73, found 7 days ago31 Dec: $120, found 3 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec$65T'way AirIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 2 days agoOpen this trip
3 Dec$56PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 6 days agoOpen this trip
8 Dec$51PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 5 days agoOpen this trip
10 Dec$59PeachGimpo International Airport (GMP) → Kansai International Airport (KIX)nonstopfound 3 days agoOpen this trip
15 Dec$52PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 4 days agoOpen this trip
18 Dec$116PeachGimpo International Airport (GMP) → Kansai International Airport (KIX)nonstopfound 4 days agoOpen this trip
20 Dec$99PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 4 days agoOpen this trip
22 Dec$57PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 5 days agoOpen this trip
24 Dec$66PeachGimpo International Airport (GMP) → Kansai International Airport (KIX)nonstopfound 2 days agoOpen this trip
26 Dec$91PeachGimpo International Airport (GMP) → Kansai International Airport (KIX)nonstopfound 4 days agoOpen this trip
29 Dec$73PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 7 days agoOpen this trip
31 Dec$120PeachIncheon International Airport (ICN) → Kansai International Airport (KIX)nonstopfound 3 days agoOpen this trip

Which month looks cheapest?

December 2026 is the cheapest month — from $51.

November 2026From $702 departure dates17 Nov · found 2 days agoOpen this tripEvery date in November 2026
December 2026From $51Cheapest seen12 departure dates8 Dec · found 5 days agoOpen this trip
January 2027From $574 departure dates28 Jan 2027 · found 4 days agoOpen this tripEvery date in January 2027
February 2027From $924 departure dates28 Feb 2027 · found 5 days agoOpen this tripEvery date in February 2027
March 2027From $6918 departure dates2 Mar 2027 · found 3 days agoOpen this tripEvery date in March 2027
April 2027From $1414 departure dates23 Apr 2027 · found 5 days agoOpen this trip
May 2027From $1292 departure dates18 May 2027 · found 6 days agoOpen this trip
June 2027From $1265 departure dates16 Jun 2027 · found 3 days agoOpen this trip
July 2027From $1431 departure date30 Jul 2027 · found 3 days agoOpen this trip
October 2027From $884 departure dates26 Oct 2027 · found 2 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