Showing 1,012 registered airlines with a combined fleet of 8,883 airframes.
| Airline Name | ICAO / IATA | Fleet Size |
|---|---|---|
| WRA Inc | WRR | 0 |
| Wright Air Lines | WRT | 0 |
| Wright Air Service | WRF / 8V | 0 |
| WSI Corporation | XWS | 0 |
| Wyoming Airlines | WYG | 0 |
| Xerox Corporation | XER | 0 |
| XO | XOJ | 8 |
| Xtra Airways | CXP / XP | 3 |
| Young Flying Service | YFS | 0 |
| Zantop International Airlines | ZAN | 0 |