Answer:

sfo

Answer	Crossword Clue
SFO	Airport code near Millbrae, California
SFO	CA airport
SFO	Hub NW of LAX

SFO	Calif. airport
SFO	It's in the same state as LAX
SFO	Destination NW of LAX
SFO	LAX counterpart
SFO	Bay Area air hub
SFO	N. California air hub
SFO	It's about 350 miles NW of LAX
SFO	Bay Area hub: Abbr.

SFO	BART stop
SFO	Northern Cal. hub
SFO	UAL's westernmost hub
SFO	Bay Area airport letters
SFO	Calif.'s second-busiest airport
SFO	UAL western hub
SFO	Virgin America hub: Abbr.
SFO	UAL West Coast hub

SFO	Cal.-bound luggage legend
SFO	Airport north of LAX
SFO	It's northwest of LAX
SFO	Airport with a BART stop
SFO	Airport close to SJC and OAK
SFO	Bay area airport letters
SFO	Cal. airport code
SFO	Alternative to OAK

SFO	Airport with a BART terminal
SFO	West Coast airport, for short
SFO	Bay Area airport code
SFO	Bay Area airport, briefly
SFO	Airport accessible via BART
SFO	Facility about 350 miles NW of LAX
SFO	Hub WNW of LAS
SFO	W. Coast airport

SFO	It's nearly 700 mi. south of Sea-Tac
SFO	Bay Area travel letters
SFO	Northern CA airport
SFO	Northern Calif. air hub
SFO	CA's second-busiest airport