The Bombardier DHC 8-Q400: Choosing the right aircraft
The De Havilland DHC 8-Q400 is one of the most capable regional turboprops ever built, here's where it fits, how it compares and what to check before you buy.
At Danan Aviation Consulting, we help airlines make smart decisions when choosing aircraft that meet their specific needs. Our work in aircraft consulting and maintenance is built to guide you in matching the right airframe to your routes, budget and growth plans. Here we look at the Bombardier De Havilland DHC 8-Q400, one of the most capable regional turboprops ever built, and why it may be the right fit for operators focused on efficiency, capacity and speed.
The De Havilland Dash 8-400 (Q400) was designed to close the gap between turboprops and regional jets. Compared with earlier-generation turboprops it delivers roughly 40% more range and about 30% higher cruise speed, cruising near 360 knots. For airlines looking to expand or upgrade regional service, that combination opens up more route options and shorter block times without taking on the fuel burn of a jet.
Q400 at a glance
| Manufacturer | De Havilland Canada (Bombardier) |
|---|---|
| Typical seating | 74 – 90 passengers |
| Range | ~1,100 – 1,360 nm (2,040 – 2,520 km), by payload |
| Normal cruise | ~360 kts (Mach 0.65) |
| Service ceiling | 25,000 – 27,000 ft |
| Engines | 2 × Pratt & Whitney Canada PW150A |
| Max payload | ~9.6 tonnes |
Figures vary by build standard and configuration. Exact specification for any available airframe is provided on request.
Why operators choose the Q400
Seating up to 90 passengers, the Q400 is the highest-capacity turboprop in regular service. On dense regional routes that extra capacity spreads fixed trip costs across more seats, which is what drives its strong per-seat economics. Three characteristics tend to matter most to the operators we advise:
- Jet-like speed on turboprop fuel. A ~360 kt cruise keeps schedules competitive with regional jets on short sectors while burning materially less fuel, often the single biggest lever on route profitability.
- Capacity that scales with demand. At 74 to 90 seats the Q400 lets an operator grow frequency or upgauge a thin jet route without a wholesale fleet change.
- Quiet cabin. The Active Noise and Vibration Suppression (ANVS) system makes it one of the quieter turboprops in the cabin, which helps on passenger-experience and community-noise grounds alike.
Where the Q400 fits best
No aircraft is right for every network. In our experience the Q400 earns its place on high-frequency, short-to-medium regional routes with real passenger demand, typically 200 to 600 nm sectors feeding a hub or linking secondary cities. On very thin routes, a smaller 50-seat turboprop such as the Dash 8 Q-300 is often the more economical choice because you are not paying to fly empty seats. On longer or higher-demand trunk routes, a narrow-body jet may win. The art is matching gauge to demand, which is exactly the analysis we run with clients before they commit capital.
How the Q400 compares with the Fokker 50
Operators weighing a used Q400 often compare it against the Fokker 50, a dependable older-generation 50-seat turboprop. The two serve different missions:
Speed & range
- DHC 8-Q400: ~360 kt cruise and ~1,100–1,360 nm range, comfortable on medium regional sectors.
- Fokker 50: Slower cruise (~280 kts) and shorter practical range, best on short, lower-demand routes.
Capacity
- DHC 8-Q400: 74–90 seats, the highest-capacity turboprop available.
- Fokker 50: ~50 seats, better matched to thinner markets.
Cost efficiency
- DHC 8-Q400: Lower per-seat fuel and trip cost on routes that can fill the seats, thanks to modern PW150A engines and a larger cabin.
- Fokker 50: Lower total trip cost on thin routes, but higher cost per seat when demand is strong.
The Q400 is not simply "better" than a Fokker 50, it is a bigger, faster aircraft for a different job. Fill its seats and it is hard to beat on cost per seat; run it half-empty and a smaller turboprop will win.
Buying a used Q400: what to check
On the pre-owned market, two Q400s with similar hours can carry very different risk. Before you commit, look closely at PW150A engine condition and hot-section status, propeller and gearbox history, the status of any applicable Airworthiness Directives and Service Bulletins, corrosion and heavy-check history, and how the aircraft's maintenance program maps to yours. If you are bringing a Q400 onto a different program than its previous operator, budget for a bridging check to align the two, and work the pre-purchase due-diligence checklist in full. For a side-by-side with the other turboprop most buyers shortlist, see our Q400 vs ATR 72-600 comparison.