13 airports, 1 territories
USA
BLI
Bellingham
FRD
Friday Harbor
GEG
Inland Northwest
OLM
Olympia
ESD
Orcas Island
CLM
Port Angeles
TWD
Port Townsend
PDX
Portland, OR
MFR
Rogue Valley
SEA
Seattle
SHN
Shelton
MVW
Skagit
TIW
Tacoma Narrows