Route brief · SEL → KIX
Seoul → Osaka
$97
−39% vs typical
seasonal median $160 · difference $63
Sep 15 – Sep 22 · 7 nights
Jeju AirNonstop
- Usual monthly lows
- $131–$306
- Board rank
- Stronger than 88%
- Route sample
- 10 observed months
Cached fare — the booking search re-prices live before you pay.
Destination briefKIXOsakaJapan with the volume up — street food, blunt humour, and Kyoto and Nara both under an hour by train.Best windowMar–May · Oct–NovAirportsKansai (KIX) · Itami (ITM)All routes into OsakaWhen this route gets cheap.
Cached-fare history: across 10 months, Sep is the cheapest for SEL → KIX. Best time to be there: Mar–May · Oct–Nov.
Fares bottom out in September around $97 and peak in April near $338 — a $241 spread across the 10 months we track. The cheapest itinerary we are tracking flies Jeju Air nonstop and takes about 2 hours outbound, on a 7-night trip. At $97 for 821 km each way, that works out to about $59 per 1,000 km flown. That is above the $41 typical of short-haul fares here.
Cheapest day in the next 3 months: Sep 15 · $98 (40% below median)
Tap any day → live search
The median cached fare across this calendar is 8% higher than when tracking began on Aug 8 — $157 then versus $169 now, across 5 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $97, on Sep 28.
September 2026
October 2026
Cheapest in Sep · around $97
39% below the $160 typical fare
Cheapest round-trip fare found per month · Seoul → Osaka · cached-price history
Route facts
- Airports
- Incheon (ICN) · Gimpo (GMP) ↔ Kansai (KIX) · Itami (ITM)
- Flight time
- ~2 hours outbound
- Distance
- ~821 km each way
- Typical price
- $160 round-trip (seasonal median)
- Airlines on the board
- Jeju Air
- Itineraries
- Nonstop available
- Best months to visit
- Mar–May · Oct–Nov
SEL → KIX, answered.
Is $97 a good price for Seoul to Osaka?
Yes — the seasonal median for this route is around $160 round-trip. At $97 you're 39% below that, saving about $63, which we rate great for this route.
What is the cheapest month to fly from Seoul to Osaka?
Across 10 months of cached-fare history, Sep comes out cheapest on this route. The best months to actually be in Osaka are Mar–May · Oct–Nov — when those overlap, that's your window.
How far in advance should I book SEL → Osaka?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. What we can measure is which month is cheap: across 10 months of cached fares, Sep comes out lowest on this route. See /guides/what-moves-a-flight-price/ for what does move a fare.
Are there nonstop flights from Seoul to Osaka?
Yes — the current board includes nonstop fares (Jeju Air). The outbound leg runs around 2 hours.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on September 1). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Osaka?
Lock the flight first — then compare stays for Sep 15 – Sep 22 · 7 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next SEL → KIX drop reaches you as soon as we find it.
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