Last updated: August 2026
Quick answer: Jin Air, Air Busan, and Air Seoul — Korea’s three biggest budget airlines — are merging into a single carrier operating under the Jin Air name. Their boards approved the deal on August 21, 2026, and the combined airline is targeted to launch on March 17, 2027, pending a shareholder vote in December and regulatory approval. Nothing changes for travelers right away: existing bookings, mileage, and each airline’s own routes and schedules stay exactly as they are until the merger closes.
What Just Happened With Jin Air, Air Busan and Air Seoul?
On August 21, 2026, the boards of all three low-cost carriers approved a merger agreement that folds Air Busan and Air Seoul into Jin Air, creating a single airline under the Jin Air brand. It’s a consolidation of Korea’s three largest budget carriers into one operator, with the merger ratio set at Jin Air 1 : Air Busan 0.2862684 : Air Seoul 0.7501939, according to Korean business daily Hankyung. All three currently operate independently, with Air Busan based at Gimhae International Airport in Busan and Jin Air and Air Seoul flying largely out of Incheon.
When Will the Merger Take Effect?
Not immediately. The August 21 board approvals only start the process — the deal still needs sign-off from an extraordinary shareholder meeting in December 2026, followed by a regulatory review under Korea’s Aviation Business Act. If that timeline holds, reporting from Money Today puts the combined Jin Air’s launch date at March 17, 2027. Until then, all three airlines continue to operate, book, and fly as separate companies.
Does This Affect My Miles or an Existing Booking?
No — not for a trip booked now or flown before the merger closes. If you already hold a reservation on any of the three carriers, or you book one over the coming months, that ticket, fare, and baggage allowance stay under the airline you booked with. The practical thing to know for planning further out is that once the merger completes in 2027, the three airlines’ schedules, loyalty programs, and branding are expected to consolidate under Jin Air — so if you’re a frequent flyer building up miles on Air Busan or Air Seoul specifically, it’s worth watching for the official transition announcement closer to 2027 rather than assuming today’s mileage program carries over unchanged.
Does This Change How I Should Book a Flight to Korea Right Now?
Not for a 2026 trip. All three carriers keep flying their current routes and schedules independently through the merger process, so booking decisions today should still come down to which airline flies the route, times, and fare you want. It’s worth comparing current fares across carriers✈️ the way you normally would, since none of the three has announced fare or route changes tied to the merger news itself.
Once you land, the Incheon Airport to Seoul guide covers the AREX train, limousine buses, and taxis into the city regardless of which of the three carriers you flew, and our guide to getting around Seoul has the subway and T-money basics for once you’re there. This merger adds to a busy year of change at Incheon — see the Incheon Airport new routes 2026 roundup for the rest, and Jin Air’s new Incheon–Kobe route for what the airline is doing on the network side this year.
Quick Summary: Jin Air–Air Busan–Air Seoul Merger
- Approved: August 21, 2026, by all three airlines’ boards
- Merging into: A single carrier under the Jin Air brand
- Merger ratio: Jin Air 1 : Air Busan 0.2862684 : Air Seoul 0.7501939
- Next step: Extraordinary shareholder meeting in December 2026
- Target launch: March 17, 2027, pending regulatory approval
- Right now: All three airlines keep flying, booking, and honoring miles independently
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