| Air Line Pilots Master Executive Council | Delta Airlines | Herndon, VA | 11,572 |
| Air Line Pilots Master Executive Council | United Airlines | Herndon, VA | 10,564 |
| Air Line Pilots Local Executive Council 44 | Delta Airlines | Herndon, VA | 4,364 |
| Air Line Pilots Master Executive Council | Fedex Master Executive Council | Herndon, VA | 3,814 |
| Air Line Pilots Master Executive Council | Jetblue Airways | Herndon, VA | 2,907 |
| Air Line Pilots Local Executive Council 5 | United Airlines | Herndon, VA | 2,287 |
| Air Line Pilots Master Executive Council | Expressjet | Herndon, VA | 2,126 |
| Air Line Pilots Local Executive Council 171 | United Airlines | Herndon, VA | 1,885 |
| Air Line Pilots Master Executive Council | Envoy Air | Herndon, VA | 1,724 |
| Air Line Pilots Local Executive Council 20 | Delta Airlines | Herndon, VA | 1,686 |
| Air Line Pilots Local Executive Council 66 | Delta Airlines | Herndon, VA | 1,668 |
| Air Line Pilots Master Executive Council | Alaska Airlines | Herndon, VA | 1,462 |
| Air Line Pilots Local Executive Council 34 | United Airlines | Herndon, VA | 1,431 |
| Air Line Pilots Local Executive Council 12 | United Airlines | Herndon, VA | 1,372 |
| Air Line Pilots Master Executive Council | Atlantic Southeast | Herdon, VA | 1,328 |
| Air Line Pilots Local Executive Council 1 | Delta Airlines | Herndon, VA | 1,298 |
| Air Line Pilots Local Executive Council 191 | Jetblue Airways | Herndon, VA | 1,167 |
| Air Line Pilots Master Executive Council | Endeavor Air | Herndon, VA | 1,143 |
| Air Line Pilots Local Executive Council 22 | Fedex | Herndon, VA | 1,080 |
| Air Line Pilots Master Executive Council | Spirit | Herndon, VA | 1,039 |
| Air Line Pilots Local Executive Council 11 | United Airlines | Herndon, VA | 1,011 |
| Air Line Pilots Local Executive Council 112 | Atlantic Southeast Airlines | Herndon, VA | 982 |
| Air Line Pilots Local Executive Council 57 | United Airlines | Herndon, VA | 964 |
| Air Line Pilots Local Executive Council 193 | Jetblue Airways | Herndon, VA | 946 |
| Air Line Pilots Local Executive Council 133 | Envoy Air | Herndon, VA | 892 |
| Air Line Pilots Local Executive Council 67 | Alaska Airlines | Herndon, VA | 857 |
| Air Line Pilots Master Executive Council | Mesa | Herndon, VA | 853 |
| Air Line Pilots Local Executive Council 71 | Airtran Airways | Herndon, VA | 792 |
| Air Line Pilots Master Executive Council | Psa | Herndon, VA | 770 |
| Air Line Pilots Local Executive Council 175 | Express Jet | Herndon, VA | 749 |
| Air Line Pilots Local Executive Council 33 | United Airlines | Herndon, VA | 727 |
| Air Line Pilots Master Executive Council | Compass | Herndon, VA | 711 |
| Air Line Pilots Local Executive Council 81 | Delta Airlines | Herndon, VA | 699 |
| Air Line Pilots Local Executive Council 83 | Envoy Air | Herndon, VA | 678 |
| Air Line Pilots Local Executive Council 16 | Delta Airlines | Herndon, VA | 664 |
| Air Line Pilots Master Executive Council | Air Wisconsin | Herndon, VA | 610 |
| Air Line Pilots Master Executive Council | Hawaiian Airlines | Herndon, VA | 573 |
| Air Line Pilots Local Executive Council 65 | Hawaiian Airlines | Herndon, VA | 573 |
| Air Line Pilots Local Executive Council 85 | Mesa Air Group | Herndon, VA | 547 |
| Air Line Pilots Local Executive Council 180 | Express Jet | Herndon, VA | 496 |
| Air Line Pilots Local Executive Council 177 | Express Jet | Herndon, VA | 466 |
| Air Line Pilots Local Executive Council 129 | Endeavor Air | Herndon, VA | 438 |
| Air Line Pilots Local Executive Council 18 | Spirit Local Executive Council | Herndon, VA | 382 |
| Air Line Pilots Local Executive Council 176 | Express Jet | Herndon, VA | 363 |
| Air Line Pilots Local Executive Council 128 | Endeavor Air | Herndon, VA | 360 |
| Air Line Pilots Local Executive Council 157 | Endeavor Air | Herndon, VA | 345 |
| Air Line Pilots Master Executive Council | Trans States | Herndon, VA | 332 |
| Air Line Pilots Local Executive Council 197 | Jetblue Airways | Herndon, VA | 318 |
| Air Line Pilots Local Executive Council 109 | Spirit Local Executive Council | Herndon, VA | 316 |
| Air Line Pilots Master Executive Council | Piedmont Airlines | Herndon, VA | 292 |
| Air Line Pilots Local Executive Council 108 | Delta Airlines | Herndon, VA | 283 |
| Air Line Pilots Local Executive Council 93 | United Airlines | Herndon, VA | 277 |
| Air Line Pilots Local Executive Council 77 | Spirit | Herndon, VA | 277 |
| Air Line Pilots Local Executive Council 59 | Alaska Airlines | Herndon, VA | 265 |
| Air Line Pilots Local Executive Council 69 | Psa | Herndon, VA | 256 |
| Air Line Pilots Local Executive Council 195 | Jetblue Airways | Herndon, VA | 241 |
| Air Line Pilots Master Executive Council | Sun Country | Herndon, VA | 214 |
| Air Line Pilots Local Executive Council 50 | Air Wisconsin | Herndon, VA | 203 |
| Air Line Pilots Local Executive Council 172 | United Airlines | Herndon, VA | 198 |
| Air Line Pilots Local Executive Council 55 | Northwest Airlines | Herndon, VA | 175 |
| Air Line Pilots Local Executive Council 84 | Mesa | Herndon, VA | 170 |
| Air Line Pilots Local Executive Council 152 | Commutair | Herndon, VA | 139 |
| Air Line Pilots Master Executive Council | Commutair | Herndon, VA | 139 |
| Air Line Pilots Local Executive Council 116 | Atlantic Southeast | Herndon, VA | 139 |
| Air Line Pilots Local Executive Council 178 | United Airlines | Herndon, VA | 136 |
| Air Line Pilots Local Executive Council 70 | Psa | Herndon, VA | 135 |
| Air Line Pilots Local Executive Council 100 | Fedex Local Executive Council | Herndon, VA | 135 |
| Air Line Pilots Master Executive Council | Kittyhawk | Herndon, VA | 121 |
| Air Line Pilots Local Executive Council 94 | Usairways | Herndon, VA | 119 |
| Air Line Pilots Local Executive Council 87 | Mesa Air Group | Herndon, VA | 113 |
| Air Line Pilots Master Executive Council | Air Transport International | Herndon, VA | 113 |
| Air Line Pilots Local Executive Council 29 | Piedmont Airlines | Herndon, VA | 104 |
| Air Line Pilots Local Executive Council 121 | Envoy Air | Herndon, VA | 90 |
| Air Line Pilots Local Executive Council 95 | Piedmont Airlines | Herndon, VA | 78 |
| Air Line Pilots Local Executive Council 179 | Express Jet Instructors | Herndon, VA | 52 |
| Air Line Pilots Local Executive Council 111 | Atlantic Southeast | Herndon, VA | 41 |
| Air Line Pilots Local Executive Council 146 | Island Air Local Executive Council | Herndon, VA | 37 |
| Air Line Pilots Master Executive Council | Island Air | Herndon, VA | 37 |
| Air Line Pilots Local Executive Council 36 | Pan American | Herndon, VA | 24 |
| Air Line Pilots Master Executive Council | Usairways | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Aloha Airlines | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Reeve Aleutian Airways | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Trans World Airlines | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Northwest Airlines | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Flying Tiger Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 27 | United Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 32 | Usairways | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 80 | Aloha Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 138 | Us Airways | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 2 | Trans World Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 47 | Delta Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 52 | United Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 150 | United Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 74 | Delta Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 54 | Northwest Airlines | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Republic Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 3 | Trans World Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 78 | Allegheny | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Allegheny | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 53 | Air Wisconsin | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Comair | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 37 | Comair | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Ross Aviation | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 75 | Ross Aviation Executive Council | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 90 | Us Airways | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 28 | Piedmont Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 148 | Us Airways | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Ccair | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 40 | Ccair | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 102 | Hawiian Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 35 | Piedmont Local Executive Council | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 91 | Allegheny | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 86 | Mesa | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 107 | Mesaba Airlines | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Mesaba Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 113 | Atlantic Southeast Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 92 | Allegheny | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 64 | Alaska Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 69 | Psa | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 63 | Alaska Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 130 | Pinnacle Local Executive Council | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 41 | Usairways | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 68 | Jetstreampsa | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 141 | Independence Air | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 17 | Astar Air Cargo | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Markair | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 135 | U S Airways | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | U S Airways Shuttle | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 5 | United Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 155 | American Eagle | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 61 | Psa | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 45 | Comair | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 39 | Trans States | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 106 | Mesaba Airlines | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | America West | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 62 | America West | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 13 | Northwest Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 60 | Skyway Local Executive Council | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Skyway Master | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 89 | Mesa | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 88 | Mesa | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 115 | Mesa Air Group | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 131 | American Eagle | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 126 | Envoy Air | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 71 | Delta | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 19 | Spirit | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Emery Worldwide | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Polar Air Cargo | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 23 | Polar Air Cargo Local Exec Council | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 38 | Trans States | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 105 | American Eagle | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 10 | Ryan | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 46 | Ryan | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Pan American | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 25 | Champion Air | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Champion Air | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Midwest Airlines | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Midway Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 96 | Ata Airlines Local Exec Council | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 30 | Midwest Airlines Local Exec Council | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 97 | Ata Airlines Local Exec Council | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 98 | Ata Airlines Local Exec Council | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | American Trans Air | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 72 | Atlas Air Local Executive Council | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Atlas Air | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 142 | Atlantic Coast | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Continental | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 170 | Continental | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 173 | United Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 48 | Delta Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 104 | Mesaba | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 26 | Fedex Local Executive Council | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 51 | Air Wisconsin Local | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 79 | Fedex | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 15 | Sun Country | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 43 | Midway Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 143 | Atlantic Coast | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Gemini | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 99 | Fedex | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 117 | Gemini Local | Herdon, VA | 0 |
| Air Line Pilots Local Executive Council 7 | Fedex | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 82 | America West | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Kitty Hawk | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 111 | Kitty Hawk | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 73 | Psa | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 114 | Envoy Air | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 54 | Delta Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 49 | Air Wisconsin Lec 49 | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 180 | | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 118 | Evergreen | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 119 | Capital Cargo | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Evergreen | Herdon, VA | 0 |
| Air Line Pilots Master Executive Council | Capital Cargo | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 45 | Comair | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Airtran Airways | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Colgan Air | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 14 | Fedex | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 127 | Pinnacle Local Executive Council | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 156 | Colgan Air | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 158 | Colgan Air | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 19 | Compass | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 151 | North American | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | North American Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 190 | Air Transport International | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 113 | Atlantic Southeast | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 76 | Airtran Airways | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 153 | Continental Airlines | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 123 | Fedex | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 199 | Jetblue Airways | Herndon, VA | 0 |
| Air Line Pilots Local Executive Council 500 | Fedex | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Astar Air Cargo | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Atlantic Coast | Herndon, VA | 0 |
| Air Line Pilots Master Executive Council | Ryan | Herndon, VA | 0 |
