What I was tring to say is that when you you talk about Major Airlines they are normally talked about as passenger and or cargo.
According to the US DOT the list is:
PASSENGER MAJORS
Alaska Airlines, Inc.
America West Airlines, Inc.
American Airlines, Inc.
American Eagle, Inc.
American Trans Air
Continental Airlines, Inc.
Delta Air Lines, Inc.
Northwest Airlines, Inc.
Southwest Airlines Co.
Trans World Airlines, Inc.
United Air Lines, Inc.
US Airways, Inc.
ALL-CARGO MAJORS
DHL Airways
Federal Express Corp.
United Parcel Service