| Code | Description |
|---|
| 09Q | Swift Air, LLC d/b/a Eastern Air Lines d/b/a Eastern (2018 - ) |
| 09Q | Swift Air, LLC (2006 - 2017) |
| 0IQ | Lynx Aviation d/b/a Frontier Airlines (2007 - 2007) |
| 0JQ | Vision Airlines (2008 - 2015) |
| 0WQ | Avjet Corporation (2009 - 2021) |
| 16 | PSA Airlines Inc. (2004 - 2015) |
| 1BQ | Eastern Airlines f/k/a Dynamic Airways, LLC (2018 - ) |
| 1BQ | Dynamic Airways, LLC (2010 - 2017) |
| 1TQ | Rhoades Aviation dba Transair (2013 - 2023) |
| 23Q | Sky King Inc. (2015 - 2015) |
| 23Q | Songbird Airways Inc. (2015 - 2017) |
| 27Q | Jet Aviation Flight Services, Inc. (2015 - ) |
| 2HQ | Elite Airways LLC (2016 - ) |
| 2PQ | 21 Air LLC (2016 - ) |
| 37Q | Hillwood Airways, LLC f/k/a ATX Air Services, LLC (2018 - ) |
| 3EQ | Scott Aviation, LLC d/b/a Silver Air (2018 - ) |
| 3FQ | Western Air Charter, Inc. d/b/a Jet Edge (2018 - ) |
| 3K | Tatonduk Outfitters Limited d/b/a Tatonduk Flying Service (1995 - 2004) |
| 3M | Gulfstream Int (2004 - 2011) |
| 3M | Silver Airways (2012 - ) |
| 3Z | Tatonduk Outfitters Limited d/b/a Everts Air Alaska and Everts Air Cargo (2005 - 2013) |
| 5J | Private Jet Expeditions (1993 - 1995) |
| 5J | Cebu Air Inc d/b/a Cebu Pacific Air (2016 - ) |
| 5V | Tatonduk Outfitters Limited d/b/a Everts Air Alaska and Everts Air Cargo (2013 - ) |
| 5X | United Parcel Service (1988 - ) |
| 5Y | Atlas Air Inc. (1993 - ) |
| 8C | Air Transport International (1988 - ) |
| 8N | Flagship Airlines Inc. (1998 - 1998) |
| 9E | Pinnacle Airlines Inc. (2002 - 2013) |
| 9E | Endeavor Air Inc. (2013 - ) |
| 9L | Colgan Air (2002 - 2012) |
| 9N | ANA & JP Express Co. Ltd. (2006 - ) |
| 9N | Trans States Airlines (1991 - 2002) |
| 9R | Rosenbalm Aviation Inc. (1980 - 1991) |
| 9R | Flagship Express Services (1991 - 1991) |
| 9S | Southern Air Inc. (1999 - 2021) |
| AA | American Airlines Inc. (1960 - ) |
| ABX | Airborne Express Inc. (2004 - 2005) |
| ABX | ABX Air Inc (2005 - ) |
| AJQ | Aerodynamics Inc. d/b/a SkyValue d/b/a SkyValue Airways (2016 - 2020) |
| AJQ | Aerodynamics Inc. (2003 - 2016) |
| AP | Aeromexpress (1994 - 1995) |
| AP | Aspen Airways Inc. (1960 - 1991) |
| AQ | Aloha Airlines Inc. (1981 - 2008) |
| AS | Alaska Airlines Inc. (1960 - ) |
| AX | Trans States Airlines (2002 - ) |
| B6 | JetBlue Airways (2000 - ) |
| BE | Braniff International Airlines Inc. (1991 - 1992) |
| BF | Alaska International Air (1980 - 1984) |
| BF | French bee (2018 - ) |
| BF | Markair Inc. (1984 - 1995) |
| BFQ | Buffalo Airways Inc. (1984 - 1996) |
| C5 | CommuteAir LLC dba CommuteAir (2022 - ) |
| C5 | Commutair Aka Champlain Enterprises, Inc. (2005 - 2022) |
| CCQ | Capital Cargo International (1996 - 2004) |
| CDQ | American International Airways Inc. (1991 - 1999) |
| CDQ | Kitty Hawk International (1999 - 2002) |
| CDQ | Connie Kalitta Services (1989 - 1991) |
| CO | Continental Air Lines Inc. (1960 - 2011) |
| CP | Canadian Airlines International Ltd. (1981 - 2001) |
| CP | Compass Airlines (2007 - 2020) |
| CP | Alis Cargo Airlines S.P.A. (2021 - ) |
| CS | Continental Micronesia (1993 - 2010) |
| CTQ | Custom Air Transport (1995 - 2007) |
| DH | Independence Air (2004 - 2005) |
| DH | Discovery Airways Inc. (1990 - 1990) |
| DH | Atlantic Coast Airlines (2002 - 2004) |
| DL | Delta Air Lines Inc. (1960 - ) |
| E0 | EOS Airlines, Inc. (2005 - 2008) |
| E8 | USAfrica Airways Inc. (1994 - 1995) |
| E9 | Boston-Maine Airways (2003 - 2008) |
| E9 | Evelop Airlines SL (2017 - ) |
| EA | Eastern Air Lines Inc. (1960 - 1991) |
| EE | Eastern Airlines Group Inc. (2015 - 2017) |
| EM | Empire Airlines Inc. (1993 - ) |
| ER | Astar USA, LLC (2011 - 2012) |
| ER | DHL Airways (1992 - 2003) |
| ER | Astar Air Cargo Inc. (2003 - 2010) |
| EV | Atlantic Southeast Airlines (1993 - 2011) |
| EV | ExpressJet Airlines LLC d/b/a aha! (2021 - ) |
| EV | ExpressJet Airlines LLC (2019 - 2021) |
| EV | ExpressJet Airlines Inc. (2012 - 2019) |
| EZ | Evergreen International Inc. (1979 - 2013) |
| F2 | Omega Air Holdings d/b/a Focus Air (2005 - 2008) |
| F8 | Freedom Airlines d/b/a HP Expr (2002 - 2010) |
| F9 | Frontier Airlines Inc. (1994 - ) |
| FCQ | Falcon Air Express (1996 - 2015) |
| FDQ | Great American Airways (1986 - 1997) |
| FE | Primaris Airlines Inc. (2003 - 2008) |
| FF | Tower Air Inc. (1983 - 2000) |
| FL | AirTran Airways Corporation (1994 - 2014) |
| FL | Frontier Airlines Inc. (1960 - 1986) |
| FM | Federal Express Corporation (1986 - 1996) |
| FNQ | Fine Airlines Inc. (1992 - 2000) |
| FX | Federal Express Corporation (1996 - ) |
| G4 | Allegiant Air (2000 - ) |
| G7 | GoJet Airlines LLC d/b/a United Express (2005 - ) |
| GCA | Golden Carriage Aire (1960 - 2002) |
| GCA | Global Crossing Airlines, Inc. (2021 - ) |
| GFQ | Gulf And Caribbean Cargo (1998 - ) |
