Oahu

Dillingham Airfield

HDH

Oak Harbor

Oak Harbor

ODW

Oak Harbor

Whidbey Island NAS (Ault Field)

NUW

Oakland

Convention Center H/P

JCE

Oakland

Oakland International Airport

OAK

Oakland, MD

Oakland / Coliseum Stat

OBT

Oaktown

Green

OTN

Ocala

Taylor Field

OCF

Ocean City

Municipal

OCE

Ocean Reef

Ocean Reef

OCA

Oceana

NAS

NTU

Oceanic

Oceanic

OCI

Oceanside

Municipal

OCN

Ogallala

Searle Field

OGA

Ogden

Hill Afb

HIF

Ogden

Municipal

OGD

Ogdensburg

Ogdensburg

OGS

Oil City, PA

Splane Memorial

OIL

Okeechobee

County

OBE

Oklahoma City

Downtown Airpark

DWN

Oklahoma City

Tinker AFB

TIK

Oklahoma City

Wiley Post

PWA

Oklahoma City

Will Rogers World Airport

OKC

Okmulgee

Okmulgee

OKM

Olathe, KS

Johnson County Executive

OJC

Olathe, KS

New Century Aircenter Airport

JCI

Old Harbor

Old Harbor SPB

OLH

Old Town

Old Town

OLD

Olean

Municipal

OLE

Olga Bay

Olga Bay SPB

KOY

Olive Branch

Olive Branch Arpt

OLV

Olney

Olney - Noble

OLY

Olney

Olney

ONY

Olympia

Olympia

OLM

Omaha

Eppley Airfield

OMA

Omak

Municipal

OMK

Oneill

Municipal

ONL

Oneonta

Municipal

ONH

Onion Bay

Onion Bay

ONN

Ontario

Ontario International

ONT

Ontario

Intl Heliport

JIO

Ontario, OR

Ontario Municipal Airport

ONO

Opelousas

St Landry Parish

OPL

Orange

The City Heliport

JOR

Orangeburg

Municipal

OGB

Orlando

Orlando Executive

ORL

Orlando

Orlando International

MCO

Orlando

Walt Disney World

DWS

Oroville

Oroville

OVE

Osage Beach

Osage Beach

OSB

Osceola

Municipal

OEO

Oscoda

Wurtsmith AFB

OSC

Oshkosh

Oshkosh

OKS

Oshkosh

Wittman Field

OSH

Oskaloosa

Municipal

OOA

Otto

Vor

OTO

Ottumwa

Industrial

OTM

Ouzinkie

Ouzinkie SPB

KOZ

Owatonna

Owatonna

OWA

Owensboro

Daviess County

OWB

Oxford

University - Oxford

UOX

Oxford

Miami University

OXD

Oxford, CT

Waterbury - oxford

OXC

Ozark

Cairns AAF

OZR

Ozark

Hanchey Army Heliport

HEY

Ozark, AL

Lowe Army Heliport

LOR

Ozona

Ozona Municipal

OZA