| Summary |
| Cockpit | 2 | 2 | 2 | 2 |
| DOC / nm | $ 2.19 | $ 4.30 | — | $ 4.20 |
| Min Crew | 1 | 1 | 2 | 1 |
| Total Seats | 6 | 8 | 21 | 10 |
| Flight Rules | IFR | IFR | IFR | IFR |
| Manufacturer | Piper | Beechcraft | Cessna | Beechcraft |
| Aircraft Name | M600 | KingAir 250 | SkyCourier | KingAir 350i |
| Certification | FAA / EASA | FAA / EASA | In Development | FAA / EASA |
| Max Range (nm) | 1406 | 1420 | 900 | 1560 |
| DOC / nm / Seat | $ 0.55 | $ 0.72 | — | $ 0.53 |
| OEM Verification | VERIFIED | VERIFIED | Un-Verified | VERIFIED |
| Useful Load (lbs) | 2200 | 3760 | — | 5145 |
| Standard Cabin Seats | 4 | 6 | 19 | 8 |
| Direct Operating Cost | $ 603 | $ 1,333 | — | $ 1,311 |
| Flight Deck (Base Spec) | Garmin G3000 | Rockwell Collins Pro Line Fusion | Gyro / Analog | Rockwell Collins Pro Line Fusion |
| Max Cruise Speed (ktas) | 274 | 310 | 200 | 312 |
| Base Aircraft Price (USD) | $3,081,400 | $6,450,000 | $7,375,000 | $7,650,000 |
| Max Cabin Seats | — | 8 | 19 | 9 |
| Cabin |
| Cockpit | 2 | 2 | 2 | 2 |
| Lavatory | No | 1 Flushing | No | Optional |
| Min Crew | 1 | 1 | 2 | 1 |
| Total Seats | 5 | 8 | 21 | 10 |
| Galley Location | MID | — | — | FWD |
| Cabin Pressure (psi) | 5.6 | 6.5 | Un-Pressurized | 6.5 |
| Galley / Refreshment | Refreshment Centre | No | No | Optional |
| Standard Cabin Seats | 4 | 6 | 19 | 8 |
| SL Cabin Altitude (ft) | 12600 | 15293 | — | — |
| Max Cabin Altitude (ft) | 8644 | — | — | — |
| Max Cabin Seats | — | 8 | 19 | 9 |
| Lavatory Location | — | AFT | — | AFT |
| Cargo Door | — | — | Yes | — |
| Engine |
| FADEC | No | Yes | Yes | Yes |
| Model | PT6A-42A | PT6A-52 | PT6A-65SC | PT6A-60A |
| TBO (hrs) | 3600 | 3600 | 6000 | 3600 |
| Horsepower | 600 | 850 | 1100 | 1050 |
| Flat Rating | ISA + 55 | ISA + 37 | — | ISA + 10 |
| No. of Engines | 1 | 1 | 1 | 1 |
| Fuel Capacity (gal) | 260 | 544 | — | 539 |
| Dimensions |
| Length (ft) | 29.7 | 43.8 | 54.9 | 46.7 |
| Wingspan (ft) | 43.2 | 57.9 | 72 | 57.9 |
| Cabin Width (ft) | 4.1 | 4.5 | — | 4.5 |
| Cabin Height (ft) | 4 | 4.8 | — | 4.8 |
| Cabin Length (ft) | 12.3 | 16.7 | — | 19.5 |
| Overall Height (ft) | 11.3 | 14.8 | 19.8 | 14.4 |
| Cabin Volume (cu. ft) | 165 | — | — | — |
| Baggage Volume Int. (cu. ft) | 20 | 55 | — | 71 |
| Cabin Width - Floor (ft) | — | 4.1 | — | 4.1 |
| Cabin Length - Seating (ft) | — | 16.7 | — | 19.5 |
