the.com/economy class

means The cheapest airline cabin tier, where you get a seat, minimal legroom, and the privilege of paying extra for anything that might make the flight bearable.

from "Economy" traces back to Greek oikonomia, "household management" — the art of running a home efficiently and cheaply. Airlines borrowed the word in the mid-20th century when they began splitting cabins into tiers, pairing "economy" with "first class" to signal a no-frills, budget-minded tier as commercial flying expanded beyond the wealthy. The term stuck as air travel democratized, even as the actual space allotted to each economy passenger has, famously, only shrunk since.