Cessna Conquest II vs Commander 690
Live Market Snapshot
Current asking-price market, aggregated across multiple marketplaces · re-checked on a rolling daily cycle
Cessna Conquest II
- For sale now
- 9
- Model years available
- 1978–1984
Commander 690
- For sale now
- 16
- Median asking
- $785,000
- Range
- $633,250–$1,925,000
- Model years available
- 1974–1983
Live data from AeroGurus, aggregated daily across the used-aircraft market. Figures are current asking prices, not appraisals — confirm with a pre-buy inspection.
Full Specs Comparison
Swipe to see all specs
| Spec / Model | Cessna Conquest II | Commander 690 |
|---|---|---|
|
Median $785,000
|
|
| Price Range | $818,920 – $1,871,000 | $633,250 – $1,925,000 |
| Category | Multi Engine Turboprop | — |
| Model Specifications | ||
| Seats | 11 | 7 |
| Horsepower | 635 HP | 717 HP |
| Cruise Speed | 272 kts (504 km/h) | 283 kts (524 km/h) |
| Range | 1,650 nm (3,056 km) | 1,454 nm (2,693 km) |
| Service Ceiling | 35,000 ft (10,668 m) | 31,000 ft (9,449 m) |
| Max Gross Weight | 9,850 lbs (4,468 kg) | 10,325 lbs (4,683 kg) |
| Useful Load | 3,100 lbs (1,406 kg) | 2,500 lbs (1,134 kg) |
| Fuel Capacity | 475.0 gal (1798 L) | — |
| Fuel Burn | 70.0 GPH (265 L/h) | 70.0 GPH (265 L/h) |
| TBO | 3,500 hrs | — |
| Overhaul Cost | $350,000 | — |
| Annual Fixed | $70,000 | — |
| Hourly Variable | $800 | — |
| Engines | 2 x Turboprop | 2 x Turboprop |
Cost of Ownership
EstimateCessna Conquest II
Fuel$385/hr
Variable$800/hr
Annual Fixed$70,000/yr
Total (200 hrs/yr)
$230,000/yr
Commander 690
Fuel$385/hr
Which Should You Buy: Cessna Conquest II or Commander 690?
Pick the Conquest II if…
- More seats — 11 vs 7.
- Longer range — 1650 nm vs 1454 nm.
Pick the 690 if…
- Budget matters — from $633,250 vs $818,920, you save ~$185,670.
- Faster cruise — 283 kts vs 272 kts.
Auto-generated from current market data and published specs. Confirm with a pre-buy inspection and professional appraisal.
Frequently Asked Questions
Which is better, Cessna Conquest II or Commander 690?
It depends on your mission and budget.
The Conquest II cruises at 272 kts with 1,650 nm range.
The 690 cruises at 283 kts with 1,454 nm range.
Review the specs table above to find which fits your flying profile.
How do prices compare?
Prices vary by year, hours, avionics, and condition. Always get a pre-buy inspection.
What's the difference between Cessna Conquest II and Commander 690?
Conquest II engine: HONEYWELL TPE331-8-401S (635 hp).
Seats: 11 vs 7.
Cruise: 272 vs 283 kts.
Range: 1650 vs 1454 nm.
Which is cheaper to operate per hour?
Conquest II: about $800/hr variable cost.
Variable cost includes fuel, reserves and overhaul accruals. Annual fixed costs (hangar, insurance, annual inspection) add to the total.
Which has more seats and useful load?
Conquest II: 11 seats / 3,100 lb useful load.
690: 7 seats / 2,500 lb useful load.
Useful load = max gross weight minus empty weight; it determines how much fuel plus payload you can carry.
How does maintenance compare — TBO and overhaul cost?
Conquest II: 3,500-hour TBO, overhaul ~$350,000.
Reaching the time-between-overhaul (TBO) triggers a mandatory engine/airframe rebuild that affects resale value.
Disclaimer: All prices and cost estimates are from third-party sources for informational purposes only. Always obtain professional appraisal and inspection before purchase.
Prices re-checked on a rolling cycle — most within a few days · Data: FAA Registry, NTSB · About our data