Mitsubishi Heavy Industries built one business jet, the MU-300 Diamond: a swept-wing light jet with a flat cabin floor and a toilet at the rear. About a hundred were built before Beechcraft took over the design and turned it into the Beechjet 400, the line that ended with the Hawker 400XP.
The Mitsubishi MU-300 is out of production, still flies with a few operators and appears in European charter only now and then. With each request for it we search for a free aircraft and price a jet with the same cabin, or a Citation CJ2, in the same reply.
The Japanese light jet from which the Beechjet 400 and Hawker 400XP were developed, with the same cabin and a toilet at the rear. Very few remain in European charter, so we quote its younger relatives alongside.
With its swept wing the Diamond was faster than the early straight-wing Citations, and its flat floor without a dropped aisle made the cabin feel larger than its height suggests. From the first Diamond to the last Hawker the cabin stayed the same: 4.72 m long, 1.50 m wide and 1.45 m high.
| Model | Passengers | Range | Cruise speed | Cabin height | Baggage | Hourly rate |
|---|---|---|---|---|---|---|
| MU-300 Diamond | 4-8 | 2,074 km | 796 km/h | 1.45 m | 1.59 m³ | EUR 3,200 |
The other business aircraft of Mitsubishi, the high-wing MU-2 twin turboprop, is also out of production and is not in our catalogue.
Four club seats face each other, a side divan adds places, and the toilet sits at the rear with room for hand luggage beside it. The floor is flat, though adults have to stoop. In cruise the cabin is held below the pressure of 1,800 m.

The Mitsubishi jet suits legs of up to about two hours, such as London Farnborough - Geneva in 1:32 h or Paris Le Bourget - Nice in 1:27 h. With a full cabin and a headwind it flies less far than the manufacturer's figure, so the operator checks legs over about 1,500 km case by case.
AOPA Pilot magazine advises against basing the type on runways shorter than about 1,500 m, which matters at several popular airports:
Because so few Mitsubishi Diamonds remain, the realistic choice is a younger jet of the same line or a Citation CJ2, all at the same hourly rate:
| Model | Passengers | Range | Cruise speed | Cabin height | Baggage | Hourly rate |
|---|---|---|---|---|---|---|
| Hawker 400XP | 5-8 | 2,469 km | 833 km/h | 1.45 m | 1.59 m³ | EUR 3,200 |
| Nextant 400XT | 5-8 | 3,710 km | 852 km/h | 1.45 m | 1.59 m³ | EUR 3,200 |
| Citation CJ2 | 6-8 | 2,987 km | 765 km/h | 1.45 m | 1.84 m³ | EUR 3,200 |
On Paris Le Bourget - Lisbon, at the edge of the Diamond's comfortable reach, the Hawker 400XP takes 2:27 h from EUR 12,500 and the Nextant 400XT 2:22 h from EUR 13,000. The Nextant flies Hamburg - Lisbon non-stop in 3:19 h.

The Mitsubishi MU-300 is priced from EUR 3,200 per flight hour for the whole aircraft with crew and fuel, the floor for light jets in the block below. The Hawker 400XP, Nextant 400XT and Citation CJ2 start at the same rate.
Short legs carry a large fixed part, because positioning, the minimum charge and airport fees stay the same: Madrid - Palma takes 1:15 h and costs from EUR 8,000, about twice rate times time. On Milan Linate - London Farnborough (1:51 h) the price starts at EUR 10,000.
| Route | Aircraft | Distance | Flight time | Price from |
|---|---|---|---|---|
| Madrid - Palma (PMI) | MU-300 Diamond | 547 km | 1:15 h | EUR 8,000 |
| Geneva - Barcelona (BCN) | MU-300 Diamond | 637 km | 1:22 h | EUR 8,500 |
| Munich - Split (SPU) | MU-300 Diamond | 639 km | 1:23 h | EUR 8,500 |
| Amsterdam - Munich (MUC) | MU-300 Diamond | 664 km | 1:25 h | EUR 8,500 |
| Paris Le Bourget - Nice (NCE) | MU-300 Diamond | 694 km | 1:27 h | EUR 8,500 |
| Hamburg - Zurich (ZRH) | MU-300 Diamond | 694 km | 1:27 h | EUR 8,500 |
| Nice - Ibiza (IBZ) | MU-300 Diamond | 722 km | 1:29 h | EUR 9,000 |
| Zurich - Olbia (OLB) | MU-300 Diamond | 733 km | 1:30 h | EUR 9,000 |
| London Farnborough - Geneva (GVA) | MU-300 Diamond | 753 km | 1:32 h | EUR 9,000 |
| Larnaca - Athens (ATH) | MU-300 Diamond | 930 km | 1:46 h | EUR 9,500 |
| Frankfurt - Rome (CIA) | MU-300 Diamond | 966 km | 1:49 h | EUR 10,000 |
| Milan Linate - London (FAB) | MU-300 Diamond | 984 km | 1:51 h | EUR 10,000 |
| Route | Aircraft | Distance | Flight time | Price from |
|---|---|---|---|---|
| Paris Le Bourget - Lisbon (LIS) | Hawker 400XP | 1,460 km | 2:27 h | EUR 12,500 |
| Paris Le Bourget - Lisbon (LIS) | Nextant 400XT | 1,460 km | 2:22 h | EUR 13,000 |
| Hamburg - Lisbon (LIS) | Nextant 400XT | 2,198 km | 3:19 h | EUR 16,000 |
Added to the table price:
Empty Legs on the Mitsubishi MU-300 are very rare, simply because so few aircraft fly in Europe. Jets of the Hawker 400 family and the Citation CJ series offer them much more often, mainly in summer between business cities, the Riviera and the islands, 40-65 % under a regular charter. Date and route are set by the operator, and a full booking cancels the leg.

For a quote we need:
The offer names the type, the version, the operator and the year of the aircraft. You sign a contract with the price, the payment terms and the cancellation rules.
Few people know that an MU-300, a Beechjet 400 and a Hawker 400XP share one cabin. We use that to widen the search, so you get the same space from the aircraft based closest to you instead of waiting for one of the last Diamonds.
European Private Jets has 14 years in business aviation, 11 people in Cyprus, Nice, Hamburg and Geneva and access to about 6,500 aircraft through operators. Call +357 96407410 or write to private@jets.flights; requests are accepted 24/7.

14 years in business aviation in Europe, with the head office in Cyprus and offices in Nice, Hamburg and Geneva. More than 100 regular clients and 34 partner companies around the world.

Through certified operators we have access to around 6,500 private jets and turboprops. We select an aircraft for a flight of any range and complexity.

Every flight is covered by a clear contract stating the aircraft, times, included services and cancellation terms. We are flexible and always ready to discuss details and make changes.

You can book the flight and sign the contract remotely, without visiting an office. If you prefer, all documents can also be arranged in person at one of our offices.
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No. The MU-300 Diamond was its only business jet, and Beechcraft took over the design. The aircraft still flying are out of production but operated in small numbers.
The cabin is the same. The Hawker 400XP has stronger engines, a higher take-off weight, thrust reversers as standard and more range.
Madrid - Palma costs from EUR 8,000 and London Farnborough - Geneva from EUR 9,000 for the whole aircraft one way. Airport fees, taxes and any positioning are added.
No. The DA42 Twinstar is a four-seat Austrian light twin with diesel engines, covered on the Diamond Aircraft page. The name is a coincidence: the MU-300 is a twin-engine jet from Japan with a pressurised cabin for up to eight.
About 2,070 km according to the manufacturer, less with a full cabin and a headwind. Geneva - Barcelona, Frankfurt - Rome and Larnaca - Athens are well within reach; for Lisbon from Paris we suggest a Hawker 400XP or Nextant.
Very rarely. On the Hawker 400 family and the Citation CJ series they are more common, at 40-65 % below a regular charter.
The aviation expert will answer all your questions about business aviation and private flights. We will help you to compare and choose the best business jet for your flight.