Washington Dulles International Airport (IAD) (Loudoun County)
Last Updated: December 8, 2025, 01:46 am UTC
Parts of Dulles Airport reside in Fairfax County and Loudoun County, but most of the airport is located on the Loudoun County side.
Air Wisconsin Airlines doing business as United Express.
Chautauqua Airlines doing business as United Express.
ExpressJet Airlines ("JetLink") doing business as Continental Express.
Mesa Airlines ("Air Shuttle") doing business as United Express.
Frequencies
Washington Dulles International Airport (IAD)
Metropolitan Washington Airports Authority
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 407.450 | RM | 023 DPL | IAD MobLnges | Mobile Lounges | FM | Transportation | |
| 453.200 | WPNU915 | RM | 047 DPL | IAD Shuttles | Parking/Employee Shuttle Buses | FM | Transportation |
| 464.925 | WPPS507 | RM | 532 DPL | IAD Shuttles | Parking/Employee Shuttle Buses | FM | Transportation |
Air Traffic Control
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 134.850 | B | CSQ | IAD ATIS | Automatic Terminal Information Service (ATIS) | AM | Aircraft | |
| 135.700 | BM | CSQ | IAD ClearDel | Clearance Delivery | AM | Aircraft | |
| 129.175 | BM | CSQ | IAD De-Icing | De-Icing | AM | Aircraft | |
| 129.525 | BM | CSQ | IAD De-Icing | De-Icing | AM | Aircraft | |
| 122.775 | KUW2 | BM | CSQ | IAD Ops | Dulles Operations | AM | Aircraft |
| 121.900 | BM | CSQ | IAD Grnd-E | Ground - East | AM | Aircraft | |
| 121.725 | BM | CSQ | IAD Grnd-Spr | Ground - Spare | AM | Aircraft | |
| 132.450 | BM | CSQ | IAD Grnd-C | Ground Center (1C/19C) | AM | Aircraft | |
| 121.625 | BM | CSQ | IAD Grnd-W | Ground West (Rwys 1L/19R, 12/30) | AM | Aircraft | |
| 119.125 | KZS5 | BM | CSQ | IAD Ramp-N | Ramp Control - North (Taxilanes A/B) | AM | Aircraft |
| 129.550 | WCF9 | BM | CSQ | IAD Ramp-S | Ramp Control - South (Taxilanes C/D/E during off peak traffic periods) | AM | Aircraft |
| 130.550 | WCF9 | BM | CSQ | IAD Ramp-S | Ramp Control - South (peak alternate, Taxilane E and F/G Ramps) | AM | Aircraft |
| 124.075 | BM | CSQ | IAD Spare | Spare (used for Clearance Delivery and/or Ground West as needed) | AM | Aircraft | |
| 348.600 | BM | CSQ | IAD Twr1/19C | Tower - Center (1C/19C) | AM | Aircraft | |
| 120.250 | BM | CSQ | IAD Twr1-19C | Tower - Center (Runways 1C/19C) | AM | Aircraft | |
| 123.775 | BM | CSQ | Twr Emergency | Tower - Emergency | AM | Aircraft | |
| 120.100 | BM | CSQ | IAD Tower | Tower - Runway 1R/19L | AM | Aircraft | |
| 317.800 | BM | CSQ | IAD Tower | Tower - Runway 1R/19L / Ground - East | AM | Aircraft | |
| 134.425 | BM | CSQ | IAD Tower-W | Tower - West (Rwys 1L/19R, 12/30) | AM | Aircraft | |
| 122.950 | BM | CSQ | IAD UNICOM | UNICOM | AM | Aircraft |
Potomac Consolidated Terminal Radar Approach Control (TRACON) - Shenandoah Area
Aviation - Airlines
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 129.225 | WEP5 | BM | CSQ | IAD American | American | AM | Business |
| 129.325 | WEP5 | BM | CSQ | IAD AmerConn | American Connection/CHQ | AM | Business |
| 129.150 | KXQ3 | BM | CSQ | IAD British | British Airways ("Speedbird") | AM | Business |
| 131.200 | KLU5 | BM | CSQ | IAD Continen | Continental / Continental Express | AM | Business |
| 131.775 | BM | CSQ | IAD Delta | Delta | AM | Business | |
| 131.850 | KHT6 | BM | CSQ | IAD Delta | Delta Airlines | AM | Business |
| 131.925 | WNP7 | BM | CSQ | IAD FedEx | FedEx | AM | Business |
| 136.600 | BM | CSQ | IAD JetBlue | JetBlue | AM | Business | |
| 129.975 | BM | CSQ | IAD Lockheed | Lockheed Martin | AM | Business | |
| 131.575 | BM | CSQ | IADLufthansa | Lufthansa | AM | Business | |
| 129.525 | BM | CSQ | Piedmont | Piedmont Aviation | AM | Business | |
| 130.125 | WHB6 | BM | CSQ | IAD Saudia | Saudia | AM | Business |
| 131.400 | BM | CSQ | IAD Saudia | Saudia | AM | Business | |
| 131.325 | WQFV843 | BM | CSQ | IAD SWA | Southwest Airlines | AM | Business |
| 129.450 | BM | CSQ | IAD TransSts | Trans States Airlines ("Waterski") | AM | Business | |
| 129.825 | KWT9 | BM | CSQ | IAD US Air | US Airways/US Express | AM | Business |
| 130.375 | KVA2 | BM | CSQ | IAD United | United - Maintenance | AM | Business |
| 130.600 | KVA2 | BM | CSQ | IAD UAL130.6 | United - Operations | AM | Business |
| 131.375 | KVA2 | BM | CSQ | IAD United | United - Operations | AM | Business |
| 130.150 | WPZL616 | BM | CSQ | IAD UnitedEx | United Express (Air Wisconsin, Mesa ["Air Shuttle"], Trans States) | AM | Business |
| 131.075 | KVA2 | BM | CSQ | IAD UnitedEx | United Express - Arrival Operations (Air Wisconsin) | AM | Business |
| 131.650 | WPTA590 | BM | CSQ | IAD UnitedEx | United Express - Departure Operations, Terminal A | AM | Business |
| 130.725 | KVA2 | BM | CSQ | IAD UnitedEx | United Express - Departure Operations, Terminals C and D (Mesa ["Air Shuttle"]) | AM | Business |
| 131.375 | KVA2 | BM | CSQ | IAD UnitedEx | United Express - Systems Maintenance | AM | Business |
Aviation - Fixed Base Operators
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 129.775 | KFU7 | BM | CSQ | ATLANTIC | Atlantic Aviation | AM | Business |
| 131.875 | WDP4 | BM | CSQ | SIGNATURE | Signature Aviation | AM | Business |
Federal
Airline Ground Operations
| Aeronautical Radio (IAD) DMR Motorola Capacity Plus Single Site (TRBO) | Various airlines use this system for ground operations. |
| United Airlines DT3 DMR Tier 3 Capacity Max | Airline operations |
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 460.7875 | WQKA366 | RM | CC 1 TG * SL * |
IAD ARINC | ARINC | DMR | Business |
| 452.225 | WPTT563 | RM | CC 2 TG * SL * |
IAD Alaska | Alaska | DMR | Business |
| 460.800 | WNGA802 | RM | 103.5 PL | IAD All Nippon | All Nippon | FMN | Business |
| 460.875 | WPTS651 | RM | CC 1 TG 1001 SL 1 |
IAD American | American | DMR | Business |
| 463.300 | WQCH425 | RM | 371 DPL | IAD BritAirw | British Airways | FMN | Business |
| 464.800 | WQOA567 | RM | 624 DPL | IADCommutair | Commutair | FMN | Business |
| 460.750 | WNYA554 | RM | 162.2 PL | IAD Delta | Delta | FMN | Business |
| 452.050 | WQQS314 | RM | CC 3 TG * SL * |
IAD Emirates | Emirates | DMR | Business |
| 460.650 | WPTR711 | RM | CC 14 TG * SL * |
IAD JtBl .65 | JetBlue | DMR | Business |
| 464.7625 | WPTR711 | RM | 203.5 PL | IAD JtBl7625 | JetBlue | FMN | Business |
| 464.825 | WQQB969 | RM | 167.9 PL | IAD Lufthans | Lufthansa | FMN | Business |
| 460.7625 | WQFM893 | RM | CC 12 TG * SL * |
IAD Southwest | Southwest | DMR | Business |
| 461.6125 | WQFC372 | RM | 072 DPL | IAD VirgnAtl | Virgin Atlantic | FMN | Business |
Other Services
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 151.1225 | BM | 71.9 PL | IAD BP .1225 | Air BP | FM | Business | |
| 151.805 | KNDT304 | BM | 71.9 PL | IAD BP .805 | Air BP | FM | Business |
| 151.925 | WPUV236 | BM | 71.9 PL | IAD BP .925 | Air BP | FM | Business |
| 461.225 | WPUS568 | BM | 118.8 PL | IAD BP .225 | Air BP | FM | Business |
| 463.3125 | WSDD968 | RM | CC 4 TG 101 SL 1 |
Atlantic Av | Atlantic Aviation | DMR | Business |
| 463.4625 | WSAI946 | RM | CC 5 TG 20170 SL 2 |
Menzies Fuel | Menzies Aviation Fueling - Other Airlines | DMR | Business |
| 463.625 | WSAI946 | RM | CC 6 TG 20167 SL 2 |
Menzies Fuel UA | Menzies Aviation Fueling - United | DMR | Business |
| 463.625 | WSAI946 | RM | CC 6 TG 20166 SL 1 |
MenziesFuel UAEX | Menzies Aviation Fueling - United Express | DMR | Business |
| 154.515 | KBA969 | BM | 114.8 PL | IAD PageAvjt | Page Avjet | FM | Business |
| 452.4625 | RM | CC 2 TG 101 SL 1 |
Signature Av | Signature Aviation | DMR | Business | |
| 452.275 | WQTR336 | RM | CC 1 TG 1 SL 1 |
IAD Swissport 1 | Swissport | DMR | Business |
| 452.275 | WQTR336 | RM | CC 1 TG 2 SL 2 |
IAD Swissport 2 | Swissport | DMR | Business |