Air Seoul

Air Seoul is a South Korean low-cost carrier and an Asiana subsidiary, working the short and medium-haul routes out of Seoul Incheon with a strong lean towards Japan and regional Asian leisure destinations. Its mint-green branding is the tell on the tarmac. The model is straightforward budget flying: one cabin, one class, and a fare that buys the seat and little else until you add to it.

The fleet is built around the Airbus A321, a single-aisle narrowbody sized for the busy regional runs Air Seoul flies. Both A321 configurations in the map carry the same single-class economy layout, so the choice between them comes down to seat position rather than any cabin difference. It is a focused, low-complexity fleet that suits a carrier flying a lot of two-to-four-hour sectors.

Every seat on Air Seoul is economy, laid out six-abreast in the standard A321 arrangement with no separate premium section. On sectors of a few hours that keeps things simple: the decision is aisle or window, forward or back, and whether extra legroom is worth the add-on. The product is what you would expect from a regional low-cost carrier, with comfort coming from choosing the right row rather than paying up a class.

Because the whole cabin is one class, the seat that matters is the one with the legroom or the fast exit you want. Forward rows clear the aircraft first on a tight connection at Incheon, and the seats just behind a bulkhead or beside an exit trade some recline for stretch room. Window seats early in the cabin sit ahead of the wing for a clearer view; if noise bothers you, the rows over and behind the wing run louder. On a short hop none of it is make-or-break, but on a four-hour sector the right row earns its keep.