Route · ICN → KIX
Flights from Seoul to Osaka
The 859-kilometre hop between Seoul Incheon (ICN) and Osaka Kansai (KIX) is one of the busiest short-haul corridors in Northeast Asia, with a typical block time of around an hour and a half. Korean Air and Asiana Airlines operate the legacy end of the market on narrowbodies such as the A321 and B737, while budget carriers Jeju Air and Eastar Jet fill out frequency with high-density 737 configurations; All Nippon Airways rounds out the mix from the Japanese side. A practical note worth remembering: Kansai Airport sits on an artificial island roughly 50 minutes by Haruka express from central Osaka, so factor that transfer into any tight onward connection. On fares, midweek departures in late January and early February — after the New Year rush subsides — typically represent the softest pricing on this route, while the premium cabins on full-service carriers often show better availability during shoulder-season weekdays than on holiday-adjacent Fridays and Sundays.
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Cheapest dates to fly
Live prices · powered by AviasalesThe calendar below pulls live fares from our search partner for Seoul (ICN) → Osaka (KIX). Use the year view… to spot the cheapest week to fly, the day-of-week patterns most travellers miss, and any shoulder-season dips worth shifting your trip around. Prices refresh every few hours, so what you see is what your booking page should look like a moment later — click any date to jump straight to the fare on Aviasales.
Airlines on this route
5 carriersThe 5 carriers we currently track on the Seoul–Osaka route, from full-service flag carriers to low-cost competitors. Tap any airline for its full profile, baggage… rules, fleet context, and a live fare search pre-filtered to that carrier — useful if you're loyal to a frequent-flyer programme, want to compare onboard product on the same dates, or are weighing a cheaper one-stop against a pricier nonstop.
Flights from Seoul to Osaka
Live schedule · powered by AviasalesBelow is the published weekly schedule for nonstop and one-stop services from Seoul to Osaka — the actual flight numbers, departure and arrival times your… booking page will pull from. Use it to plan around departure preferences (early morning vs late evening), see which carriers fly on which weekdays, or pick a connection that lets you sleep in your own bed before a long-haul leg. Click any row to load it directly in the search.
Airport guides
Quick links into the airport profiles at both ends of the route. Each guide covers terminal layout, the airlines that base hubs at ICN and… KIX, the other routes those airports serve, and the ground-transit options most travellers wish they'd read about before landing — the practical context you only really need to know once you've booked, but want to skim before you do.