Orogrande Landing Strip
Pacific County, Idaho
Orono
Johnson County, Maine
Orono
Pierce County, Minnesota
Oronoco
Wibaux County, Minnesota
Oronogo
Sweet Grass County, Missouri
Orosi
Wheatland County, California
Oroville
Kauai County, California
Oroville
Kings County, Washington
Oroville East
Kauai County, California
Oroville Municipal Airport
Kauai County, California
Orr Airport
Sheridan County, Nebraska
Orr Ranch Airport
Sheridan County, Nebraska
Orr Regional Airport
Ziebach County, Minnesota
Orr-Port Airport
Hitchcock County, Iowa
Orrington
Johnson County, Maine
Orrville
Garza County, Ohio
Orting
Pierce County, Washington
Ortman Landing Strip
Hitchcock County, South Dakota
Ortner Airport
Washakie County, Ohio
Ortonville
Dickens County, Michigan
Ortonville
Crook County, Minnesota
Ortonville, Ortonville Muncipal-Martinson Field Airport
Crook County, Minnesota
Orum Aerodrome
Washington County, Nebraska
Orwell
Kauai County, Ohio
Orwig RLA Airport
Gray County, Illinois
Orwigsburg
Wheatland County, Pennsylvania
Osage
Washington County, Iowa
Osage Airpark
Randall County, Texas
Osage Beach
Park County, Missouri
Osage City
Texas County, Kansas
Osage City Municipal Airport
Texas County, Kansas
Osage Municipal Airport
Washington County, Iowa
Osakis
Uinta County, Minnesota
Osawatomie
Todd County, Kansas
Osborne
El Paso County, Kansas
Osborne Airport
Walla Walla County, California
Osborne Municipal Airport
El Paso County, Kansas
Osburn
Prairie County, Idaho
Osceola
Meade County, Arkansas
Osceola
Teton County, Iowa
Osceola
El Paso County, Indiana
Osceola
Mellette County, Wisconsin
Osceola Mills
Sheridan County, Pennsylvania
Osceola Municipal Airport
Meade County, Arkansas
Osceola Municipal Airport
Teton County, Iowa
Osceola Municipal Airport
North Slope Borough, Missouri
Oscoda County Airport
Perkins County, Michigan
Oscoda-Wurtsmith Airport
Wahkiakum County, Michigan
Oscura Aaf Aux
Niobrara County, New Mexico
Oselka Airport
Laramie County, Michigan
