Find the cheapest flights from Seoul to Osaka in 2026. Compare airlines, prices by month, and booking tips to save on your trip.
Route: Seoul (ICN) → Osaka (KIX)
Distance: Direct flights not available
Flight Duration: 4h 30m – 8h
Prices by Month
| Month | Avg Price | Demand |
|---|---|---|
| January | €95 | low |
| February | €105 | low |
| March | €145 | medium |
| April | €285 | high |
| May | €195 | medium |
| June | €165 | medium |
| July | €185 | medium |
| August | €195 | medium |
| September | €155 | low |
| October | €245 | high |
| November | €125 | low |
| December | €175 | medium |
Airlines on This Route
- Korean Air (direct): from €180 — Best for reliable schedules; book 5+ weeks ahead for cheapest fares, especially Thursday departures
- Asiana Airlines (direct): from €175 — Often matches Korean Air prices; check their Korean site for cheaper won-denominated fares
- Jin Air (direct): from €85 — LCC with lowest base prices but watch for hidden fees; only worth it if traveling light
- Japan Airlines (direct): from €195 — JAL often has sales in January-February; their booking site shows more available seats than aggregators
- ANA (direct): from €190 — Part of Star Alliance; check ANA website directly for mistake fares which appear periodically
- Air Seoul (direct): from €75 — Lowest cost option but limited routes; book early as they have smaller aircraft with fewer seats
Booking Strategy
For Seoul-Osaka, book 5-6 weeks in advance for optimal prices. January through March offers the cheapest fares (€80-150 return), while April (cherry blossom) and October (autumn foliage) see prices spike to €250-400. Tuesdays and Wednesdays are consistently 15-25% cheaper than weekend departures. Gimpo (GMP) to Itami (ITM) flights are shorter (~1h 25m) and often cheaper than Incheon (ICN) to Kansai (KIX), making GMP-ITM the budget traveler choice. Use Skyscanner’s ‘everywhere’ search to find mistake fares, then book directly with the airline. Korean Air and Asiana prices are comparable; check both and also the Korean-language versions of airline sites for won prices which can save 10-15%.
Route Tips
- Use Seoul Gimpo (GMP) to Osaka Itami (ITM) route for shorter flights (1h 25m) and often cheaper tickets than the more common Incheon-Kansai route
- Book directly on Korean Air or Asiana Korean websites in won—prices can be 10-15% lower than EUR prices on international sites
- All travelers to Japan need a valid passport; South Korean citizens can enter visa-free for stays up to 90 days
- Kansai International Airport has excellent transit connections: Nankai Line to Namba in 35min, or JR Haruka express to Kyoto in 75min
- Download the ‘Japan Connected-free WiFi’ app before arrival for complimentary internet access at airports and major stations
- Consider a Japan Rail Pass if planning day trips from Osaka—7 days of unlimited JR lines costs around €200 and pays for itself after 2-3 Shinkansen trips
- January-February sees Osaka festivals like Tana Matsuri and plenty of indoor activities; pack layers as temperatures hover around 5-10°C
Frequently Asked Questions
How long is the flight from Seoul to Osaka?
Direct flights from Seoul Incheon (ICN) to Osaka Kansai (KIX) take approximately 2 hours 30 minutes. Flights from Seoul Gimpo (GMP) to Osaka Itami (ITM) are slightly shorter at about 1 hour 25 minutes. If booking connecting flights (typically via Taipei, Hong Kong, or Shanghai), expect 4.5 to 8 hours depending on layover duration. Korean Air and Asiana operate the most frequent direct services with multiple daily departures.
How much does it cost to fly from Seoul to Osaka?
Direct flights range from €75-250 depending on season and airline. Budget carriers like Jin Air and Air Seoul offer fares from €75-120 (carry-on only), while full-service carriers like Korean Air, Asiana, JAL, and ANA charge €150-250 including checked baggage. The cheapest round-trips (€80-120) are available in winter months (January-February), while cherry blossom season (April) and autumn (October) can see prices exceed €300 for last-minute bookings.
Are there direct flights from Seoul to Osaka?
Yes, direct flights are readily available and operate multiple times daily. Korean Air, Asiana Airlines, Japan Airlines, and ANA operate direct services between Seoul Incheon (ICN) and Osaka Kansai (KIX), taking about 2h 30m. For shorter routes, Jin Air and Air Seoul fly between Seoul Gimpo (GMP) and Osaka Itami (ITM) in just 1h 25m. There is no need to take connecting flights unless you find an exceptionally cheap special offer.
What is the cheapest month to fly from Seoul to Osaka?
January offers the cheapest fares with averages around €95, followed by February (€105) and November (€125). These winter months see significantly lower demand as they’re outside Japanese peak seasons. September also offers good value at €155. The most expensive periods are April (cherry blossom, €285 average) and October (autumn foliage, €245), so avoid booking during these months unless necessary.
Which airlines fly from Seoul to Osaka?
Six airlines operate direct flights: Korean Air and Asiana (full-service, ~€175-180), Japan Airlines and ANA (full-service, ~€190-195), and budget carriers Jin Air and Air Seoul (~€75-120). Budget airlines charge extra for checked baggage, while full-service carriers include one 23kg checked bag. Connecting options include China Eastern, China Southern, Hong Kong Airlines, and Tigerair Taiwan, though these rarely offer time or cost savings.
What airport do I fly into in Osaka?
Most international flights arrive at Kansai International Airport (KIX), located on an artificial island in Osaka Bay, about 30km south of central Osaka. From KIX, the Nankai Line rapid train to Namba station takes 35 minutes (¥920/~$6), or limousine buses run hourly to major hotels (¥1,500/~$10). Some budget carriers use Itami Airport (ITMA) in the northern part of the city, closer to central Osaka but handling fewer international routes.
How far in advance should I book Seoul to Osaka flights?
Book 5-6 weeks ahead for the best balance of availability and price. For January-February travel, 4-5 weeks is usually sufficient. Peak seasons (April, October, Golden Week in late April/early May) require 6-8 weeks advance booking as prices rise quickly and cheap seats sell out. Last-minute bookings rarely yield deals on this popular route, and walk-up fares can exceed €400 one-way.
Is it cheaper to fly from Seoul to Osaka on weekdays?
Yes, Tuesday and Wednesday departures are consistently 15-25% cheaper than Friday through Sunday flights. A Tuesday return in January might cost €90 while the same flight on Saturday costs €130. Monday and Thursday fall in the middle. For business travelers heading to Osaka, early morning flights (7-9am) are typically cheaper than midday departures. Use Skyscanner’s flexible date search to compare across the whole month.
Data updated: 2026-03
