| 1501 | DEGX | MISSISSIPPI POWER COMPANY | | | SCAC4 |
| 1502 | DEHE | Dehé | | F | TRAFFIC |
| 1503 | DEHK | D E H TRUCKING INC | | | SCAC4 |
| 1504 | DEHL | DOUBLE EAGLE HOLDINGS LTD | | | SCAC4 |
| 1505 | DEHN | DEEHAN'S LEASING CORP | | | SCAC1 |
| 1506 | DEHS | DEHESA EXPRESS | | | SCAC4 |
| 1507 | DEHX | Dwight E. Hamlin | 7/1930 | | NAKINA |
| 1508 | DEHX | Dwight E. Hamlin (Dwight Hamlin, Inc.) | 7/1923 | | NAKINA |
| 1509 | DEHX | Dwight E. Hamlin | 8/1920 | | NAKINA |
| 1510 | DEHX | DWIGHT E. HAMLIN | | | PWRC |
| 1511 | DEI | Ecoair International | IATA: 9H, Founded in 1999. in 2002 it was integrated into Khalifa Group, the parent of Khalifa Airways. | DZ | AVCODES |
| 1512 | DEI | Ecoair | | | ICAO1 |
| 1513 | DEIA | DMG EXPRESS INC SA DE CV | | | SCAC4 |
| 1514 | DEIB | DEICKE BROTHERS TRUCKIN INC | | | SCAC4 |
| 1515 | DEIC | DEIULEMAR COMPAGNIA DI NAVIGAZIONE | | | SCAC4 |
| 1516 | DEID | E. I. DUPONT DE NEMOURS & CO. | | | PWRC |
| 1517 | DEID | DEI TRANSPORTATION | | | SCAC4 |
| 1518 | DEIE | DONAL ENTERPRISES INC | | | SCAC4 |
| 1519 | DEIH | DHR ENTERPRISES INC | | | SCAC4 |
| 1520 | DEII | DEFFENBAUGH INDUSTRIES INC | | | SCAC4 |
| 1521 | DEIK | DEIKE, AUGUST, TRANSFER, INC | | | SCAC1 |
| 1522 | DEIK | DANIEL EXPRESS INC | | | SCAC4 |
| 1523 | DEIL | DILTS ENTERPRISES INC | | | SCAC4 |
| 1524 | DEIN | DOMMER, ELROY INC | | | SCAC4 |
| 1525 | DEIO | DETAIL DISTRIBUTION INC | | | SCAC4 |
| 1526 | DEIR | DICOM EXPRESS INC | | | SCAC4 |
| 1527 | DEIT | DEITER BROS FUEL CO INC | | | SCAC4 |
| 1528 | DEIV | DAVENPORT, ED INC | | | SCAC4 |
| 1529 | DEIW | DANTOR | | | SCAC4 |
| 1530 | DEIY | DEI TREADING INC | | | SCAC4 |
| 1531 | DEJ | Delta Jet, S.A. | Callsign: Delta Jet, | E | AVCODES |
| 1532 | DEJ | Dana Executive Jets | Callsign: Danajet, | UAE | AVCODES |
| 1533 | DEJC | DEJAN CARRIER INC | | | SCAC4 |
| 1534 | DEJG | DE JESUS FLORES GARCIA, MARIA TERES | | | SCAC4 |
| 1535 | DEJK | D & J TRUCKING INC | | | SCAC4 |
| 1536 | DEJN | DE JONG TRANSPORT | | | SCAC4 |
| 1537 | DEJO | DEJNOS TRUCKING INC | | | SCAC4 |
| 1538 | DEJQ | DIETER, JOE & SONS INC | | | SCAC4 |
| 1539 | DEJS | DEMIRJIAN, MIKE TRUCKING SERVICE IN | | | SCAC4 |
| 1540 | DEK | AviaStar | Callsign: Dek Aero, | BY | AVCODES |
| 1541 | DEKA | DECKER, M E TRANSPORTATION INC | | | SCAC4 |
| 1542 | DEKB | DEKBRANDS | | | SCAC4 |
| 1543 | DEKI | DE KONING INNOVATIONS | | | SCAC4 |
| 1544 | DEKK | DEKE TRUCKING INC | | | SCAC4 |
| 1545 | DEKL | DEKALB TRANSPORTATION INC | | | SCAC4 |
| 1546 | DEKO | DEMCO EXPRESS | | | SCAC4 |
| 1547 | DEKT | DECKER TRANSPORT COMPANY, INCORPORATED | | | SCAC1 |
| 1548 | DEKT | DECKER TRANSPORT COMPANY INCORPORAT | | | SCAC4 |
| 1549 | DEKU | FORVARD TRANS SERVICE LTD | | RUS | BIC |
| 1550 | DEL | Carib Aviation Limited | IATA: 6C, Callsign: Red Tail, IATA designator changed to 3Q | AG | AVCODES |
| 1551 | DEL | Delta Air Regionalflugverkhr GmbH | IATA: DI, Callsign: Bodensse, Merge into form Deutsche BA | D | AVCODES |
| 1552 | DEL | Carib Aviation Limited | IATA: K7, Callsign: Red Tail, Designator K7* recalled by IATA | AG | AVCODES |
| 1553 | DEL | Delta Air Regionalflugverkhr GmbH | IATA: BO, Callsign: Bravo Oscar, ICAO callsign changed to Delta Air | D | AVCODES |
| 1554 | DEL | Carib Aviation Limited | IATA: 3Q, Callsign: Red Tail, Founded in 1972. Ceased operations on 30 September 2008. IATA designator changed from 6C | AG | AVCODES |
| 1555 | DEL | Delta Air Regionalflugverkhr GmbH | IATA: BO, Callsign: Delta Air, IATA Designator changed to DI. ICAO callsign changed from Bravo Oscar | D | AVCODES |
| 1556 | DEL | Carib Aviation | | | ICAO1 |
| 1557 | DELBUS | Delbus GmbH & Co. KG | | D | TRAFFIC |
| 1558 | DELC | DEL-CO TRANSPORT SERVICES INC | | | SCAC4 |
| 1559 | DELD | DELLES CARRIERS INC | | | SCAC4 |
| 1560 | DELE | DE LEONS TRANSPORT | | | SCAC4 |
| 1561 | DELF | DAYNAS EXPRESS LINE LLC | | | SCAC4 |
| 1562 | DELIJN | | | B | TRAFFIC |
| 1563 | DELK | DIAMOND EXPRESS LLC | | | SCAC4 |
| 1564 | DELM | DUNKSBURG EXPRESS LLC | | | SCAC4 |
| 1565 | DELP | DELRAY PLANTS INC | | | SCAC4 |
| 1566 | DELQ | D & E OIL INC | | | SCAC4 |
| 1567 | DELT | DELTA LINES INC | | | PWRC |
| 1568 | DELT | DELTA TRUCKING INC | | | SCAC4 |
| 1569 | DELT | DELTA GAS COV SRL | | RO | VKM |
| 1570 | DELTA | DeltaRail GmbH | | DE | VKM |
| 1571 | DELTAK | Deltakar | | BG | TRAFFIC |
| 1572 | DELU | AMARAL INDUSTRIES COMMON LAW | | USA | BIC |
| 1573 | DELU | E-LOGISTICS SA | | | SCAC4 |
| 1574 | DELX | DELCORA | | | PWRC |
| 1575 | DEM | Destiladora de Alcoholes Y Mieles, S.A. de C.V. | Callsign: Destila Mieles, | MEX | AVCODES |
| 1576 | DEMB | DEMARCHE LOGISTICS LLC | | | SCAC4 |
| 1577 | DEME | DE MASE TRUCKING CO INC | | | SCAC4 |
| 1578 | DEMG | D E M TRUCKING INC | | | SCAC4 |
| 1579 | DEMJ | DOWN EAST MARKETING INC | | | SCAC4 |
| 1580 | DEML | De MARLIE TRUCKING, INC | | | SCAC1 |
| 1581 | DEMM | DEMARC | | | SCAC4 |
| 1582 | DEMO | DELMAR MOVING & STORAGE INC | | | SCAC4 |
| 1583 | DEMP | DEMARC | | | SCAC4 |
| 1584 | DEMQ | DEMPEWOLF, JOE J TRANSFER & STORAGE | | | SCAC4 |
| 1585 | DEMX | Demeter, Inc. | added 4/1989; 1/1994-7/2005 (not listed) | | NAKINA |
| 1586 | DEMX | Demeter, Inc. | added 4/89; 1/94-7/2000 | | NRHS |
| 1587 | DEMX | DEMETER INC. | | | PWRC |
| 1588 | DEMX | Demeter | | | RSRV |
| 1589 | DEMX | DEMETER INC | | | SCAC4 |
| 1590 | DEMY | DEMARCHE TRANSPORTATION LLC | | | SCAC4 |
| 1591 | DEMY | Demy Schandeler | | L | TRAFFIC |
| 1592 | DEN | Denel Aviation | Callsign: Denel, | ZA | AVCODES |
| 1593 | DEN | Danair A/S | IATA: DX, Callsign: Danish, | DK | AVCODES |
| 1594 | DEN | SAS Danmark A/S | | DK | AVCODES |
| 1595 | DEN | Dampfeisenbahn Niedehein e.V. | | DE | VKM |
| 1596 | DENA | DENALI INTERNATIONAL | | | SCAC4 |
| 1597 | DENC | DEPAOLO ENTERPRISE INC | | | SCAC4 |
| 1598 | DEND | DENMARK TRANSPORT LTD | | | SCAC4 |
| 1599 | DENE | DESIGNS 90S | | | SCAC4 |
| 1600 | DENH | DOORE ENERGY INC | | | SCAC4 |
