• The DHC-6-400 Twin Otter has a current list price of $5,900,000 as of Q2 2024, a dramatic rise from its $680,000 price tag in 1972.
• Viking Air’s DHC-6-400 can take off in as little as 1,200 ft and land in just 1,050 ft, making it one of the most capable STOL aircraft in commercial aviation today.
• Pre-owned DHC-6-300 Twin Otters average around $1,800,000, offering a significantly lower entry point into Twin Otter operations for budget-conscious buyers.
• The DHC-6-400 features a modern Honeywell Apex IFR digital flight deck, setting it apart from the original Series 100–300 aircraft produced between 1965 and 1988.
• Over 985 Twin Otters have been built as of December 2019 — keep reading to find out why operators in the Arctic, tropics, and mountains still can’t get enough of this legendary aircraft.

The DHC-6 Twin Otter: $5.9M for One of Aviation’s Most Capable STOL Aircraft

Few aircraft have earned a reputation quite like the DHC-6 Twin Otter — a rugged, twin-turboprop workhorse that has been landing on glaciers, jungle strips, and remote island beaches since 1965. At $5,900,000 for a new DHC-6-400 in 2024, this aircraft commands a serious investment, but for the operators who depend on it, the price is justified by performance that very few aircraft on the planet can match.

Viking Air, the Canadian manufacturer that acquired the Twin Otter type certificate and revived production in 2008, has continued to evolve the platform while preserving the core characteristics that made it legendary. Aviation enthusiasts and commercial operators alike can explore current market listings and availability at GlobalAir.com, which tracks active Twin Otter inventory worldwide. Understanding what drives this aircraft’s pricing means digging into both its extraordinary capabilities and the expanding market that continues to demand it.

DHC-6 Twin Otter Pricing Breakdown

The DHC-6 Twin Otter sits in a unique pricing category — it is not a light turboprop, nor is it a full regional airliner. Its price reflects a specialized capability set that operators in remote and extreme environments are willing to pay a premium for.

Current List Price: $5,900,000 as of Q2 2024

The factory list price for a brand-new DHC-6-400 Twin Otter stands at $5,900,000 USD as of Q2 2024. This figure covers the baseline aircraft with Viking Air’s standard configuration, including the Honeywell Apex digital flight deck and Pratt & Whitney Canada PT6A-34 turboprop engines. Optional mission-specific configurations — floatplane conversions, cargo interiors, or medical evacuation setups — will push the final delivery price higher.

How the 2024 Price Compares to Historical Costs

The price evolution of the Twin Otter tells a compelling story about both inflation and sustained demand. In 1972, a new Twin Otter carried a unit cost of just $680,000 USD. By 2017, that figure had climbed to $6,500,000 USD, reflecting over four decades of development, modern avionics integration, and the rising cost of certified aircraft manufacturing. The current 2024 price of $5,900,000 represents a slight market correction from the 2017 peak, yet still reflects a more-than-800% increase over the original price in inflation-adjusted terms.

New vs. Used Twin Otter Market Value

For operators who can’t justify a new-build price, the used market offers meaningful alternatives. Pre-owned DHC-6-300 Twin Otters — the final variant produced under de Havilland Canada before Viking Air restarted the line — are currently averaging around $1,800,000 USD. Financing a $900,000 loan on a Series 300 over 120 months, factoring in approximately $3,750 per month in interest, produces a payment of roughly $45,129 per period. That’s based on 450 annual owner-operated hours and $8 per gallon fuel costs, making it a workable number for regional operators running scheduled island-hopping or charter routes.

Twin Otter DHC-6-400 Performance Specifications

The performance numbers behind the DHC-6-400 are what separate it from nearly every other utility transport in its class. This aircraft doesn’t just fly to remote destinations — it was engineered to make those destinations accessible in the first place.

Speed, Range, and Ceiling

The DHC-6-400 cruises at 175 knots (201 mph) under normal conditions, with a ferry range of 566 nautical miles (651 statute miles). These numbers aren’t designed for transcontinental efficiency — they’re optimized for short-sector, high-frequency operations where the ability to land matters far more than how fast you got there. The aircraft’s service ceiling supports operations over mountainous terrain, a critical factor for the Himalayan and Alpine operators that form a significant portion of its global customer base. For those interested in learning more about aviation regulations, FAA regulations insights can provide valuable information.

Takeoff and Landing Distances

This is where the Twin Otter genuinely earns its legendary status. The DHC-6-400 achieves a STOL landing distance of just 1,050 ft, with takeoff performance in comparable territory. To put that in perspective, most regional turboprops require runways two to three times that length. This performance opens access to unprepared strips, gravel bars, and remote community airstrips that are physically inaccessible to virtually any other fixed-wing transport capable of carrying a meaningful payload.

Payload Capacity and Weight Limits

The DHC-6-400 is certified for up to 19 passengers in its standard commuter configuration. Its high-wing design keeps the fuselage low to the ground, simplifying cargo loading and unloading without ground support equipment — a critical advantage in locations where jetways and baggage loaders simply don’t exist. The external baggage compartment provides 35 cubic feet of dedicated storage.

Pratt & Whitney PT6A-34 Engine Output

Power comes from two Pratt & Whitney Canada PT6A-34 turboprop engines, each producing 620 shaft horsepower. The PT6A series is arguably the most trusted turboprop engine family in aviation history, renowned for reliability, ease of maintenance, and extraordinary time-between-overhaul intervals. For operators flying in regions where engine reliability is the difference between a successful mission and a serious incident, the PT6A-34 is a foundational reason the Twin Otter remains the preferred platform after six decades of service.

STOL Capabilities That Set the Twin Otter Apart

No other fixed-wing utility transport in production today combines passenger capacity, payload, and short-field performance the way the DHC-6-400 does. The STOL capability isn’t a marketing footnote — it is the entire reason this aircraft exists, and it defines every operational decision from wing design to engine selection.

1,200 ft Takeoff and 1,050 ft Landing: What That Means in Practice

A standard Boeing 737-800 requires roughly 6,500 ft of runway to take off at maximum weight. The DHC-6-400 needs less than a fifth of that. With a takeoff distance of approximately 1,200 ft and a landing distance of just 1,050 ft, the Twin Otter can operate from airstrips that barely qualify as clearings. That’s not an exaggeration — operators in the Maldives regularly land on island strips measuring just over 1,000 ft, and Twin Otter floatplane operators in Canada routinely use open water stretches that would be unthinkable in any other transport category.

The practical implications of this performance extend well beyond passenger convenience. In humanitarian operations, disaster relief, and remote resource extraction, the ability to land where no other aircraft can reach is the difference between a successful mission and no mission at all. Communities in northern Canada, Papua New Guinea, and the Himalayan foothills depend on Twin Otter access for supplies, medical evacuation, and basic connectivity to the outside world.

Aircraft	Takeoff Distance	Landing Distance	Passenger Capacity
DHC-6-400 Twin Otter	~1,200 ft	1,050 ft	19
Cessna 208B Grand Caravan	~2,030 ft	~1,295 ft	14
Pilatus PC-12 NG	~2,644 ft	~2,415 ft	9
Boeing 737-800	~6,500 ft	~5,000 ft	162–189

When you stack the Twin Otter’s numbers against its closest competitors, the gap becomes immediately clear. The Cessna 208B Grand Caravan — the most common single-engine utility turboprop in the world — carries five fewer passengers and still needs nearly twice the runway for takeoff. No twin-engine aircraft carrying 19 passengers comes close to matching the DHC-6-400’s short-field numbers.

Wing Design Features That Enable STOL Performance

• High-wing configuration keeps the wing clear of ground obstructions and provides natural lift at lower airspeeds, critical for slow approach speeds on short strips.
• Full-span double-slotted flaps dramatically increase lift coefficient at low speeds, allowing controlled flight at approach speeds well below conventional transport aircraft.
• Large slotted ailerons work in conjunction with the flap system to maintain roll control at the slow airspeeds required for STOL operations.
• Fixed tricycle undercarriage eliminates retraction system weight and complexity, freeing up useful load and reducing maintenance requirements in austere environments.
• Braced strut design provides structural rigidity to the wing without the added weight of a conventional cantilever structure, keeping the aircraft light enough to maximize STOL performance.

Each of these design elements works together as a system rather than in isolation. The high-wing placement combined with the double-slotted flaps allows the DHC-6-400 to generate exceptional lift at approach speeds that would put most other aircraft dangerously close to a stall. It’s an elegant engineering solution that has remained fundamentally unchanged since the original 1965 design — a testament to how well de Havilland Canada got it right the first time.

Viking Air’s engineers understood when they revived the program in 2008 that the aerodynamic fundamentals didn’t need reinvention. The Series 400 upgrades focused on powerplant refinement, avionics modernization, and structural improvements while leaving the wing’s core STOL architecture intact. That decision preserved the performance envelope that operators had trusted for decades.

Real-World Operations: Arctic, Island, and Mountain Environments

The Twin Otter’s operational footprint reads like a geography of the world’s most challenging environments. In the Canadian Arctic, operators like Kenn Borek Air have used Twin Otters on wheel-ski configurations to support polar research stations, landing on sea ice and glaciers at temperatures far below what most aircraft systems are rated for. The PT6A-34 engines are known for reliable cold-weather starts in conditions that would ground other turboprops.

In the Maldives, Trans Maldivian Airways operates one of the world’s largest floatplane fleets — almost entirely Twin Otters — ferrying tourists between Male’s main airport and resort islands scattered across the Indian Ocean atoll chain. In Nepal, operators like Tara Air have used Twin Otters to serve mountain airstrips like Lukla, which sits at 9,337 ft elevation with a runway that drops off a cliff at one end. These aren’t edge cases — they are the core market that has sustained Twin Otter production and demand for six consecutive decades.

DHC-6-400 Cabin and Interior Dimensions

The DHC-6-400’s fuselage was designed for practical versatility rather than passenger comfort in the premium sense. The cabin is functional, accessible, and reconfigurable — exactly what operators in remote and utility roles need from a working aircraft. For a comparison of business jets, explore our article on Gulfstream vs Bombardier.

Passenger Configuration for 19 Occupants

In standard commuter configuration, the DHC-6-400 seats up to 19 passengers in a single-class cabin. The fuselage measures 51 ft 9 in in length, with a wingspan of 65 ft and an exterior height of 19 ft 6 in. The low floor height enabled by the fixed tricycle undercarriage means passengers board without stairs in most configurations — a genuine operational advantage at remote strips without ground support infrastructure. For those interested in aircraft comparisons, check out the Gulfstream vs Bombardier business jets for cost and performance insights.

Cargo and Medical Evacuation Reconfiguration

One of the DHC-6-400’s most commercially valuable features is how quickly and completely the cabin can be reconfigured. Seats can be removed to convert the aircraft into a pure freighter, a combi passenger-cargo configuration, or a dedicated medical evacuation platform with stretcher mounts and medical equipment provisions. The external baggage compartment adds 35 cubic feet of dedicated cargo space that doesn’t compete with the cabin payload. For operators running mixed missions across a single fleet, this flexibility dramatically reduces the number of specialized aircraft types they need to maintain.

Avionics and Modern Upgrades on the Series 400

The DHC-6-400 isn’t just a cosmetically refreshed version of the original 1960s aircraft — it incorporates genuinely modern avionics systems that bring it into compliance with current IFR operating requirements and significantly reduce pilot workload in challenging conditions.

Honeywell Apex IFR Digital Flight Deck

The Series 400 standard fit includes the Honeywell Apex IFR digital flight deck, a fully integrated glass cockpit system that replaces the analog steam-gauge instruments found in Series 100–300 aircraft. The Apex system provides integrated navigation, communication, and flight management capability in a format that current-generation pilots are trained on, reducing transition training time and improving situational awareness in the remote, low-visibility environments where Twin Otters routinely operate. For operators holding IFR approvals, this isn’t a luxury upgrade — it’s a regulatory necessity.

How the DHC-6-400 Differs From Earlier Series 100–300 Models

The original DHC-6 series ran from 1965 through 1988, producing 844 aircraft under de Havilland Canada across the Series 100, 200, and 300 variants. When Viking Air restarted production in 2008 with the Series 400, the changes went beyond the flight deck. The Series 400 incorporates updated PT6A-34 engine specifications, improved corrosion protection for maritime and tropical operators, revised landing gear components, and a modernized electrical system. The Series 300 remains the most common variant in the used market — 985 total Twin Otters had been built as of December 2019, with 141 of those being Viking Air Series 400 aircraft — and many operators have pursued STC-approved avionics upgrades to keep older airframes operationally competitive.

Twin Otter Operating Costs

The purchase price of a DHC-6 Twin Otter is only part of the financial picture. For operators running remote routes where aircraft availability is mission-critical, the Twin Otter’s operating economics tell an equally important story — one that justifies the acquisition cost over a realistic operational lifespan.

Fuel Burn and Direct Operating Costs

The DHC-6-400’s two PT6A-34 engines burn fuel at a rate that reflects their turboprop efficiency. Based on 450 annual owner-operated hours and fuel priced at $8 per gallon, the Series 300’s direct operating costs work out to figures that regional operators can realistically budget against ticket revenue on short-sector routes. The aircraft’s 175-knot cruise speed keeps sector times short, which means fuel per trip — not fuel per hour — is the number that matters most for profitability on island-hopping and bush routes.

Direct operating costs for the DHC-6 series cover fuel, engine reserves, airframe maintenance, and landing fees. The Twin Otter’s relatively simple systems architecture — fixed undercarriage, no pressurization, straightforward hydraulics — keeps the direct cost per flight hour lower than more complex turboprop twins. For high-frequency, short-sector operators, that simplicity compounds into meaningful cost savings over a full operating year. For a comprehensive understanding of FAA regulations, which can impact operating costs, visit this resource.

Maintenance Advantages in Remote Operations

The PT6A-34 engine’s exceptional reliability record is well-documented across the global turboprop fleet. Its reverse-flow combustion design provides outstanding time-between-overhaul performance, and its modular construction allows on-wing repairs that would require full engine removal on competing powerplants. For operators based hours away from the nearest certified maintenance facility, this architecture is not a minor convenience — it’s a fundamental operational requirement. Learn more about the de Havilland Canada DHC-6 and its features.

The Twin Otter’s fixed tricycle undercarriage eliminates one of the most maintenance-intensive systems on any retractable-gear aircraft. Combine that with the high-wing design that keeps critical systems away from ground debris and water ingestion during gravel or water operations, and you have an aircraft that was specifically engineered for the kind of environments where spare parts arrive by the same aircraft you’re trying to fix. Viking Air’s global parts and support network has further strengthened the Series 400’s maintainability credentials for operators across six continents.

Who Still Buys the Twin Otter in 2024?

The Twin Otter’s customer base in 2024 spans commercial regional airlines, military and government operators, humanitarian organizations, and specialized charter operators. Trans Maldivian Airways operates the world’s largest Twin Otter floatplane fleet, serving resort islands across the Maldives atoll chain. Kenn Borek Air continues Arctic and Antarctic polar support operations. Military customers across Africa, Asia, and South America rely on the platform for transport, reconnaissance, and parachute operations. What unites these buyers is a shared requirement for short-field performance, operational reliability, and the ability to sustain the aircraft far from major maintenance centers — a combination that no competing aircraft currently delivers at the DHC-6-400’s proven level.

Frequently Asked Questions

• What is the current list price of the DHC-6-400 Twin Otter?
• How short of a runway does the DHC-6 Twin Otter need?
• How many passengers can the DHC-6-400 carry?
• What engines power the DHC-6-400 Twin Otter?
• Is the DHC-6 Twin Otter still in production?

What is the current list price of the DHC-6-400 Twin Otter?

The current list price of the DHC-6-400 Twin Otter is $5,900,000 USD as of Q2 2024. This is the baseline factory price from Viking Air for a standard configuration aircraft. Mission-specific modifications — floatplane conversions, specialized interiors, or military fit-outs — will increase the final delivery price beyond this figure. For those interested in a comparison, check out the cost and performance of Gulfstream vs. Bombardier business jets.

How short of a runway does the DHC-6 Twin Otter need?

The DHC-6-400 Twin Otter has a STOL landing distance of 1,050 ft and a takeoff distance of approximately 1,200 ft. These figures apply under standard conditions and represent some of the best short-field performance available in any twin-engine transport aircraft currently in production.

How many passengers can the DHC-6-400 carry?

The DHC-6-400 is certified to carry up to 19 passengers in its standard commuter configuration. This makes it the largest STOL-capable twin turboprop transport currently in production by a significant margin over single-engine alternatives in the utility category.

The cabin can also be reconfigured for cargo-only operations, combi passenger-freight layouts, or medical evacuation missions with stretcher provisions. This flexibility allows operators to run mixed-mission fleets from a single aircraft type, reducing overall fleet complexity and training overhead.

What engines power the DHC-6-400 Twin Otter?

The DHC-6-400 is powered by two Pratt & Whitney Canada PT6A-34 turboprop engines, each rated at 620 shaft horsepower. The PT6A series is one of the most widely operated turboprop engine families in aviation history, valued for its cold-weather reliability, long time-between-overhaul intervals, and extensive global maintenance network.

Is the DHC-6 Twin Otter still in production?

Yes. Viking Air restarted Twin Otter production in 2008 with the DHC-6-400, and the aircraft remains in active production today. The original de Havilland Canada production run spanned from 1965 to 1988, covering the Series 100, 200, and 300 variants. Viking Air has produced 141 Series 400 aircraft as of December 2019, contributing to a total fleet of 985 Twin Otters built across both production eras.

Variant	Production Period	Units Built	Approximate Price
DHC-6 Series 100	1965–1969	115	N/A
DHC-6 Series 200	1968–1973	115	N/A
DHC-6 Series 300	1969–1988	614	~$680,000 (1972) / ~$1,800,000 (used today)
DHC-6 Series 400	2008–present	141+ (as of Dec 2019)	$6,500,000 (2017) / $5,900,000 (2024)

The sustained production run across two manufacturers and six decades is a remarkable achievement in aviation history. Very few utility aircraft types have remained in continuous or near-continuous production for this long, and fewer still have done so without fundamental redesign. The Twin Otter’s longevity reflects the enduring demand for an aircraft that solves a genuinely difficult problem — reliable, high-capacity access to places that no other fixed-wing transport can reach.

For buyers evaluating the used market, the Series 300 represents the best combination of availability and proven performance, with a well-established global support ecosystem and a deep pool of type-rated pilots and mechanics. The Series 400 commands a significant premium over used Series 300 pricing, but delivers the Honeywell Apex glass cockpit, updated PT6A-34 specifications, and the confidence of a factory-new airframe with full manufacturer support from Viking Air.

Whether you’re evaluating a new DHC-6-400 at $5,900,000 or researching the used market where Series 300 aircraft trade around $1,800,000, GlobalAir.com remains the most comprehensive resource for tracking current Twin Otter listings, market conditions, and availability across the global fleet. For those interested in comparing business jets, you might find this comparison of Gulfstream vs Bombardier jets insightful.