Business suite

The current top tier of business class: a lie-flat seat enclosed by a privacy door — Qsuite, Delta One Suites, ANA’s The Room, JAL’s A350 product among them. Suites blurred the old class boundary; several beat the first cabins of a decade ago. The buying nuance is fleet coverage: airlines rarely fit suites across every aircraft, so the same flight number can be a suite one day and an open seat the next. Cabin verification per flight is how you actually buy one.