The following airlines serve Fairbanks FAI Airport.
Airline Terminal
Air North, 4N Main Terminal
Alaska Airlines, AS Main Terminal
Condor Flugdienst, DE Main Terminal
Delta Air Lines, DL Main Terminal
Era Aviation, 7H Main Terminal
Frontier Airlines, F9 Main Terminal
JAL, JL Main Terminal
Northwest Airlines, NW Main Terminal

More details on airlines from the Fairbanks Airport website.