| 1 | SKX | Skyways Express AB | IATA: JZ, Callsign: Sky Express, IATA Prefix: 752, Ceased Operations and filed for Bankrupcy on 12 May 2012. Name changed to Avia Express Sweden AB. Name changed from Skyways AB | S | AVCODES |
| 2 | SKX | Skyways AB | IATA: JZ, Callsign: Sky Express, IATA Prefix: 752, Name changed to Skyways Express AB | S | AVCODES |
| 3 | SKX | Salair AB | Callsign: Sky Express, Name changed to Skyways AB. Name changed from AMA-Flyg I Goteborg HB. ICAO designator changed from AAX | S | AVCODES |
| 4 | SKX | Avia Express Sweden AB | IATA: JZ, IATA Prefix: 752, Ceased operations on 22 May 2012. Name changed from Skyways Express AB w.e.f. 01 December 2010. Name changed to Skyways AB | S | AVCODES |
| 5 | SKX | Alliance Air Company LLC | Callsign: Skystorm, | AM | AVCODES |
| 6 | SKX | Sky Airline Peru S.A.C. | IATA: H8, Callsign: Sky Peru, | PE | AVCODES |
| 7 | SKX | Skyways Express | IATA: JZ | | ICAO1 |
| 8 | SKX | Spencer Kellogg & Sons, Inc. | 8/1920-1/1943 | | NAKINA |
| 9 | SKX | General American Transportation Corp. | 1/1945-4/1947 | | NAKINA |
| 10 | SKX | Spencer Kellogg & Sons, Inc. | Apr-38 | | NRHS |
| 11 | SKX | *SPENCER KELLOGG & SONS, INC. | | | PWRC |
| 12 | SKX | *GENERAL AMERICAN TRANSPORTATION CORP. | | | PWRC |
| 13 | SKXE | SKIPPER XPRESS | | | SCAC4 |
| 14 | SKXG | STARMARK TRANSPORT INC | | | SCAC4 |
| 15 | SKXH | SKYLINE TRANSPORTING SERVICES LLC | | | SCAC4 |
| 16 | SKXI | SHOCK TRANSPORT INC | | | SCAC4 |
| 17 | SKXL | SOKIL EXPRESS LINES LTD | | | SCAC4 |
| 18 | SKXM | SPIKE EXPRESS LLC | | | SCAC4 |
| 19 | SKXN | SKEETER EXPRESS INC | | | SCAC4 |
| 20 | SKXS | SKYLINE EXPRESS INC | | | SCAC4 |
| 21 | SKXT | SKURSKI TRANSPORT INC | | | SCAC4 |
| 22 | SKXV | S & K TRANSPORTATION SERVICES LLC | | | SCAC4 |
