I am not sure of history...but it seems like Northwest is bringing that term more into play...MKE, BOS, IND...
Northwest does not have a Boston focus city.
Does anyone know which airline started the phrase focus city?
No idea who started it, but the airline that has the biggest focus city network is American Airlines. Their focus cities operations in Boston, New York City LaGuardia, New York City JFK
, and Los Angeles are practically hubs. They also have focus cities in Raleigh/Durham, Austin, San Jose, and Fort Lauderdale/Hollywood, the most of any carrier.