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Osaka to Seoul flights in April 2027 from $303 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 April 2027, the cheapest return found recently is $303 with Eastar Jet, 17 Apr 2027 – 22 Apr 2027, found 7 days ago. The cheapest one-way found recently is $320 with Korean Air, 29 Apr 2027, found 2 days ago.

Return

We hold return fares on only 1 departure date in April 2027, too few to say what one usually costs.

Cheapest return found recently

$303

17 Apr 2027 – 22 Apr 2027 · Eastar Jet

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

out nonstop, back nonstop

found 7 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 April 2027

DatesFromAirlineStopsFound
17 Apr 2027 – 22 Apr 2027$303Eastar Jetout nonstop, back nonstopfound 7 days agoSee prices for these dates

Every date we hold

1 departure date

See every date as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
17 Apr 2027 – 22 Apr 2027$303Eastar JetKansai International Airport (KIX) → Incheon International Airport (ICN)out nonstop, back nonstopfound 7 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $158.

November 2026From $2238 departure dates28 Nov – 1 Dec · found 7 days agoSee prices for these datesEvery date in November 2026
December 2026From $158Cheapest seen6 departure dates16 Dec – 19 Dec · found 3 days agoSee prices for these dates
January 2027From $2321 departure date24 Jan 2027 – 27 Jan 2027 · found 8 days agoSee prices for these dates
February 2027From $2121 departure date6 Feb 2027 – 9 Feb 2027 · found 3 days agoSee prices for these dates
March 2027From $2113 departure dates25 Mar 2027 – 27 Mar 2027 · found 2 days agoSee prices for these datesEvery date in March 2027
April 2027From $3031 departure date17 Apr 2027 – 22 Apr 2027 · found 7 days agoSee prices for these dates
August 2027From $3331 departure date22 Aug 2027 – 26 Aug 2027 · found 8 days agoSee prices for these dates

One-way

In April 2027, the cheapest one-way fare on each of 9 departure dates is usually $158 to $178. Across all 44 departure dates we hold on this route, it is usually $115 to $178. Of the 7 months with enough one-way fares to compare, 4 are usually cheaper than April 2027.

Cheapest one-way found recently

$320

29 Apr 2027 · Korean Air

Kobe Airport (UKB) → Incheon International Airport (ICN)

nonstop

found 2 days ago

Open this tripCheck today's price

Cheapest we hold, of any age

$150

21 Apr 2027 · Korean Air

Kobe Airport (UKB) → Incheon International Airport (ICN)

nonstop

found 6 days ago

Open this tripCheck today's price

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The cheapest dates in April 2027

DatesFromAirlineStopsFound
21 Apr 2027$150Korean Airnonstopfound 6 days agoOpen this trip
22 Apr 2027$150Korean Airnonstopfound 5 days agoOpen this trip
13 Apr 2027$158Eastar Jetnonstopfound 7 days agoOpen this trip
23 Apr 2027$168Korean Airnonstopfound 5 days agoOpen this trip
12 Apr 2027$176Korean Airnonstopfound 6 days agoOpen this trip

Every date we hold

9 departure dates

5 Apr 2027: $178, found 3 days ago6 Apr 2027: $178, found 3 days ago10 Apr 2027: $197, found 6 days ago12 Apr 2027: $176, found 6 days ago13 Apr 2027: $158, found 7 days ago21 Apr 2027: $150, found 6 days ago22 Apr 2027: $150, found 5 days ago23 Apr 2027: $168, found 5 days ago29 Apr 2027: $320, found 2 days agoApr
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
5 Apr 2027$178Korean AirKobe Airport (UKB) → Incheon International Airport (ICN)nonstopfound 3 days agoOpen this trip
6 Apr 2027$178Korean AirKobe Airport (UKB) → Incheon International Airport (ICN)nonstopfound 3 days agoOpen this trip
10 Apr 2027$197Korean AirKobe Airport (UKB) → Incheon International Airport (ICN)nonstopfound 6 days agoOpen this trip
12 Apr 2027$176Korean AirKobe Airport (UKB) → Incheon International Airport (ICN)nonstopfound 6 days agoOpen this trip
13 Apr 2027$158Eastar JetKansai International Airport (KIX) → Incheon International Airport (ICN)nonstopfound 7 days agoOpen this trip
21 Apr 2027$150Korean AirKobe Airport (UKB) → Incheon International Airport (ICN)nonstopfound 6 days agoOpen this trip
22 Apr 2027$150Korean AirKobe Airport (UKB) → Incheon International Airport (ICN)nonstopfound 5 days agoOpen this trip
23 Apr 2027$168Korean AirKobe Airport (UKB) → Incheon International Airport (ICN)nonstopfound 5 days agoOpen this trip
29 Apr 2027$320Korean AirKobe Airport (UKB) → Incheon International Airport (ICN)nonstopfound 2 days agoOpen this trip

Which month looks cheapest?

January 2027 is the cheapest month — from $97.

November 2026From $1041 departure date26 Nov · found 7 days agoOpen this tripEvery date in November 2026
December 2026From $993 departure dates10 Dec · found 5 days agoOpen this trip
January 2027From $97Cheapest seen5 departure dates6 Jan 2027 · found 4 days agoOpen this trip
February 2027From $1054 departure dates3 Feb 2027 · found 4 days agoOpen this trip
March 2027From $10512 departure dates10 Mar 2027 · found 2 days agoOpen this tripEvery date in March 2027
April 2027From $1509 departure dates21 Apr 2027 · found 6 days agoOpen this trip
May 2027From $1604 departure dates18 May 2027 · found 6 days agoOpen this trip
June 2027From $1504 departure dates9 Jun 2027 · found 2 days agoOpen this trip
July 2027From $1801 departure date12 Jul 2027 · found 6 days agoOpen this trip
October 2027From $2551 departure date6 Oct 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