Jeju Air

Jeju Air is a South Korean low-cost carrier named for the holiday island it was built to serve, flying Boeing 737s from Seoul and Busan across Korea and to Japan, China and South East Asia. The network is short-haul and dense, the sort of flying where the seat decision is about legroom and exit speed rather than sleep.

The catch worth knowing is that the fleet runs two different products. Most of the 737s are a single economy cabin at full density; a smaller set carries Bizlite, a genuine two-by-two cabin at the nose with recliner hardware rather than a blocked middle seat. The same route can be flown by either, so the layout for your specific flight is the first thing to check.

The published layouts cover the 737-800 and the 737 MAX 8, each in two fits. The standard version of both is a single three-by-three economy cabin filled wall to wall. The Bizlite version trades the front few economy rows for a small two-by-two cabin with markedly more legroom and a wider chair.

The MAX 8 flies the same maps as the -800 in a newer, quieter airframe, so advice carries across the pair. Whichever type turns up, the split that matters is standard versus Bizlite, not Boeing generation.

Economy is a tight, tidy short-haul cabin: slimline seats, three-by-three, modest recline, catering sold from the cart. On sectors of one to three hours it does the job, and the practical comforts come from position rather than the seat itself.

Bizlite is the exception, and the name rather undersells it: by budget-carrier standards this is a real cabin, with recliners carrying roughly half as much legroom again as the economy rows behind. It is a day product for short sectors, not a bed, but on a full flight the difference in space and calm is immediate.

Check which fit is flying before you pay for anything: the same route can carry a Bizlite jet one day and a single-class one the next, and the seat map for your flight settles it. If the front cabin is there and the sector runs a few hours, it is the rare budget upgrade backed by different hardware rather than a curtain.

In economy on either fit, the over-wing exits are where the legroom lives, and the forward rows are quieter and first off. The rows at the very back sit against the rear galley and lavatories, and on a full holiday-route flight they collect the queue. Middle seats are the same everywhere, so a window or aisle is worth choosing early on anything over an hour or two.