Airports in the United States O-Z:
Ohio:
Youngstown-Warren Regional Airport KYNG, YNG
Rickenbacker International Airport KLCK, LCK
Oklahoma:
Lawton-Fort Sill Regional Airport KLAW, LAW
Oregon:
Rogue Valley International-Medford Airport KMFR, MFR
Southwest Oregon Regional Airport KOTH, OTH
Klamath Falls Airport KLMT, LMT
Pennsylvania:
Lehigh Valley International Airport KABE, ABE
University Park Airport KUNV, SCE
South Carolina:
Florence Regional Airport KFLO, FLO
South Dakota:
Aberdeen Regional Airport KABR, ABR
Pierre Regional Airport KPIR, PIR
Tennessee:
Tri-Cities Regional Airport KTRI, TRI
Texas:
Abilene Regional Airport KABI, ABI
Rick Husband Amarillo International Airport KAMA, AMA
Brownsville/South Padre Island International Airport KBRO, BRO
Easterwood Airport KCLL, CLL
Killeen-Fort Hood Regional Airport KGRK, GRK
Valley International Airport KHRL, HRL
Laredo International Airport KLRD, LRD
Lubbock Preston Smith International Airport KLBB, LBB
McAllen-Miller International Airport KMFE, MFE
Tyler Pounds Regional Airport KTYR, TYR
Waco Regional Airport KACT, ACT
Utah:
St. George Municipal Airport KSGU, SGU
Virginia:
Charlottesville-Albemarle Airport KCHO, CHO
Washington:
Bellingham International Airport KBLI, BLI
Tri-Cities Airport KPSC, PSC
West Virginia:
Tri-State Airport KHTS, HTS
North Central West Virginia Airport KCKB, CKB
Wisconsin:
Outagamie County Regional Airport KATW, ATW
Rhinelander-Oneida County Airport KRHI, RHI
Wyoming:
Yellowstone Regional Airport KCOD, COD
Also missing:
Montana:
Glacier Park International airport: FCA
Butte Regional Airport: FBO