Gulfstream G450 vs Bombardier Challenger 605
The Gulfstream G450 (~4,350 nm large heavy) and Bombardier Challenger 605 (~4,000 nm large heavy) are large-cabin heavy competitors — the G450 has the Gulfstream cabin and longer range; the 605 has the iconic wide Challenger cabin and lower acquisition cost.
Full Specs Comparison
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| Spec / Model | Gulfstream G450 | Bombardier Challenger 605 |
|---|---|---|
|
|
|
| Price Range | $8,750,000 – $17,800,000 | $12,000,000 |
| Category | Large Cabin Jet | Large Cabin Jet |
| Model Specifications | ||
| Seats | 16 | 12 |
| Cruise Speed | 476 kts (882 km/h) | 450 kts (833 km/h) |
| Range | 4,350 nm (8,056 km) | 4,045 nm (7,491 km) |
| Service Ceiling | 45,000 ft (13,716 m) | 41,000 ft (12,497 m) |
| Max Gross Weight | 74,600 lbs (33,839 kg) | 48,200 lbs (21,864 kg) |
| Useful Load | 22,000 lbs (9,979 kg) | 13,000 lbs (5,897 kg) |
| Fuel Capacity | 4,370.0 gal (16540 L) | 2,850.0 gal (10787 L) |
| Fuel Burn | 340.0 GPH (1287 L/h) | 310.0 GPH (1173 L/h) |
| TBO | 6,000 hrs | 5,000 hrs |
| Overhaul Cost | $700,000 | $600,000 |
| Annual Fixed | $600,000 | $650,000 |
| Hourly Variable | $3,600 | $3,900 |
| Engines | 2 x Turbofan | 2 x Turbofan |
Cost of Ownership
EstimateGulfstream G450
Fuel$1,870/hr
Variable$3,600/hr
Annual Fixed$600,000/yr
Total (200 hrs/yr)
$1,320,000/yr
Bombardier Challenger 605
Fuel$1,705/hr
Variable$3,900/hr
Annual Fixed$650,000/yr
Total (200 hrs/yr)
$1,430,000/yr
Which Should You Buy: Gulfstream G450 or Bombardier Challenger 605?
Bottom line: Choose the G450 for Gulfstream reliability, longer range and the brand's residual- value strength. Choose the Challenger 605 for the widest cabin in the class and typically lower used acquisition cost.
Pick the G450 if…
- Budget matters — from $8,750,000 vs $12,000,000, you save ~$3,250,000.
- Lower operating cost — ~$3600/hr vs $3900/hr.
- More seats — 16 vs 12.
- Faster cruise — 476 kts vs 450 kts.
- Longer range — 4350 nm vs 4045 nm.
- More inventory — 39 listings vs 24.
Pick the Challenger 605 if…
- Newer design — production from 2007 vs 2004.
Auto-generated from current market data and published specs. Confirm with a pre-buy inspection and professional appraisal.
Frequently Asked Questions
Which is better, Gulfstream G450 or Bombardier Challenger 605?
It depends on your mission and budget.
The G450 cruises at 476 kts with 4,350 nm range.
The Challenger 605 cruises at 450 kts with 4,045 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 Gulfstream G450 and Bombardier Challenger 605?
Challenger 605 engine: General Electric CF34-3B.
Seats: 16 vs 12.
Cruise: 476 vs 450 kts.
Range: 4350 vs 4045 nm.
Which is cheaper to operate per hour?
G450: about $3600/hr variable cost.
Challenger 605: about $3900/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?
G450: 16 seats / 22,000 lb useful load.
Challenger 605: 12 seats / 13,000 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?
G450: 6,000-hour TBO, overhaul ~$700,000.
Challenger 605: 5,000-hour TBO, overhaul ~$600,000.
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 updated daily · Data: FAA Registry, NTSB · About our data