Oddly enough...

There's no "official" definition of a legacy airline. Generally assumed to be one which existed prior to 1978, and did interstate routes, that last to exclude SWA.

There is however an official definition of a "major" airline per the federal government: $1B+ in revenues.

With $3B+, skywest is technically a "major" airline.

Even stranger, I'm pretty sure skywest, unlike SWA, actually did do interstate flights in the 1970's but I assume they were 135 at the time.


But here at APC, we bin airlines by their business model, ie regionals are mostly FFD with a few traditional commuters thrown in too.