Columbia subject headings:
Airlines--Rates--United States.
Airlines--United States.
Airport slot allocation--United States.
Competition--United States.
Strategic alliances (Business)--United States.
Harvard subject headings:
Airlines--Rates--United States
Airlines--United States
Airport slot allocation--United States.
Competition--United States
Strategic alliances (Business)--United States.
Princeton subject headings:
Airlines--Rates--United States.
Airlines--United States.
Airport slot allocation--United States.
Competition--United States.
Strategic alliances (Business)--United States.