De Havilland Canada publishes a short-field take-off figure for the Twin Otter: 366 metres. The declared take-off run available on runway 12 at Saba is 349 metres. Runway 30 gives you 355. The scheduled aeroplane that serves the island needs more runway than the island has, and it has been flying there for decades.

That gap is the whole subject. The world’s shortest runways are not a geography listicle. They are a licensing story. Every one of these places works because a named regulator has written a specific permission for a specific operator flying a specific type at a specific weight, and almost none of those permissions is published anywhere a reader can find it. The runway length is the part everybody quotes. The paperwork is the part that actually lets the aeroplane land.

What follows comes from the aeronautical information publications and the civil aviation authorities themselves, not from the record books — because on this subject the record books are unusually unreliable, and we will get to that at the end.

Saba: 401 metres, and the sea at both ends

The Dutch Caribbean eAIP gives runway 12/30 at Juancho E. Yrausquin as 401 by 18 metres of concrete, with a slope of 2.05 per cent down on 12 and up on 30. Threshold 12 sits 41 metres above the sea and threshold 30 at 35 metres, on the Flat Point lava promontory, with open water immediately beyond both. The obstacle section of the AIP lists the obstacles at each end as NIL, which is technically correct and somewhat misleading: there is nothing to hit because there is nothing there.

Landing distance available is the full 401 metres each way. Take-off run available is 349 metres from 12 and 355 from 30. The entry also records, plainly, that no runway end safety area is available at either end, and that the aerodrome is VFR only.

Then comes the sentence that explains everything else on this page. The AIP remarks say the airport is only available to fixed-wing aeroplanes with authorisation from the Dutch government that have met the airport qualification requirements, and that the airport is not open to the public. A separate section adds that aircraft operations require the authorisation of the Netherlands Civil Aviation Authority.

Not a rule anyone can read and comply with. A list of approved operators, held by a regulator.

Winair flies the scheduled service with the de Havilland Canada DHC-6 Twin Otter. Other operators have used the Britten-Norman Islander, and getting approved to do so meant filing with both the Netherlands transport inspectorate and the Sint Maarten civil aviation authority. Winair’s Twin Otter fleet instructor, Captain Roger Hodge, described the training pipeline to CNN in 2022 in terms the paperwork does not quite capture.

He also said, of the approach itself, that flying into Saba gets kind of hairy sometimes, but by knowing what to do, we make it look simple and calm.

Flightradar24 flew the Winair Twin Otter into Saba and filmed the whole thing, including the approach over the water to threshold 12.

The arithmetic that makes Saba work

De Havilland Canada publishes real numbers for the wheeled Twin Otter Series 400. Take-off field length to 50 feet at maximum take-off weight, to the SFAR 23 standard, is 455 metres. Landing field length from 50 feet at maximum landing weight is 460 metres. The short-field figures are 366 metres for take-off and 320 metres for landing, with ground rolls of 244 and 169 metres. Maximum take-off weight is 5,670 kg and the cabin seats nineteen.

Line those up against Saba. The landing case is comfortable: 320 metres of STOL landing into 401 metres of LDA. The take-off case is not: 366 metres of STOL take-off into 349 metres of TORA. On the manufacturer’s own published figure, the aeroplane does not fit.

It fits in practice because it does not operate at maximum weight, and because the operator flies to approved performance data rather than to a brochure. De Havilland says as much, in the quietest possible way. On the manufacturer’s spec sheet the STOL take-off figure carries an asterisk, and the asterisk reads: local regulatory approval required.

That is the thesis of this article, printed by the people who build the aeroplane.

Courchevel: 18.66 per cent, and the record books have the unit wrong

The French AIP gives Courchevel’s runway 04/22 as 536 by 40 metres, paved. What makes it extraordinary is the published lengthwise profile, which is not a single slope at all: 0.45 per cent over the first 122 metres, then 18.66 per cent over 280 metres, then 12.5 per cent over the last 134. The upper end sits at 6,583 ft and the lower at 6,371 ft.

Because the strip has a downhill and an uphill end, the AIP removes the choice: arrival on runway 22 is mandatory, departure on runway 04 is mandatory. You land uphill and you take off downhill, every time, whatever the wind is doing. Landing distance available on 22 is 508 metres rather than 536, reduced, the AIP notes, to take account of obstacles in the runway strip.

Guinness World Records lists Courchevel as having the steepest runway at an international airport, with the gradient given as 18.5 degrees. That is a unit error, and a large one. The AIP figure is 18.66 per cent, which is an angle of 10.57 degrees. A genuine 18.5-degree slope would be a gradient of about 33.5 per cent, nearly twice as steep as the real thing. Courchevel is also not an international airport; it is an altiport à usage restreint.

The restriction is written into the AIP and it is absolute: the aerodrome is reserved for propeller aircraft with a maximum certified take-off mass not exceeding 5.7 tonnes, plus helicopters. No airliner in existence clears that bar. Courchevel has no scheduled service because regulation forbids it, not because nobody wanted to sell tickets.

Pilots need either the EU mountain rating under FCL.815 or a valid authorisation to access that specific altiport, issued per site, limited to the class or type trained on, with recency of at least two landings as pilot-in-command in the previous nine months. And for commercial operations the AIP adds a further layer: an authorisation from one named regional office, DSAC Centre-Est, granted for each aircraft type concerned by operations on that one altiport.

He added that pilots should not even begin an approach at Courchevel if there is a tailwind, and that he has reached the point of being quite comfortable flying there but never wants to become complacent.

Lukla: where the qualification is the story

The Civil Aviation Authority of Nepal publishes Tenzing-Hillary Airport as a bituminous-paved runway 06/24 of 527 by 20 metres at an elevation of 2,846 metres, or 9,337 feet, served by four types: the Dornier 228, the DHC-6, the LET L-410 and the Harbin Y-12. The gradient, which everybody quotes as 11.7 per cent, does not appear anywhere in CAAN’s published data that we could reach. It is widely cited; it is not, as far as we can establish, official.

Qué es official, and far more interesting than the viral version, is what it takes to be allowed to fly there. CAAN’s Flight Operation Requirements divide short take-off and landing airfields into three categories, reproduced verbatim in the Nepali accident investigation commission’s report on Tara Air 9N-AET. Category A is below 5,500 feet with a missed approach possible. Category B is below 7,000 feet where a missed approach is critical. Category C covers fields at or above 7,000 feet where the approach is difficult and a missed approach is, in the regulation’s words, not advisable or possible after a certain point during the approach and landing phase.

For a Category C field, a pilot must have completed 100 STOL missions and then an additional 150 missions in Category C airfields. For a multi-engine aeroplane they must also have at least 2,500 hours and have been pilot-in-command for 18 months. Only then may they begin clearing the specific field, which takes ten missions there and a check ride on the eleventh.

The commonly repeated “ten landings under supervision” is therefore real, but it is the last step of a very long staircase rather than the whole requirement. One caveat we owe the reader: the accident report applies these categories to Jomsom. Lukla at 9,337 feet plainly meets the Category C definition, but we did not find a CAAN document that states it in those words.

A full cockpit run from Kathmandu into Lukla in a Dornier 228, one of the four types CAAN lists for the field.

Barra: the only runway with a tide table

Barra has three runways and all of them are sand. The UK AIP gives 07/25 as 799 by 60 metres, 11/29 as 680 by 46 and 15/33 as 846 by 46, surface listed for each as sand, aerodrome elevation five feet.

Those are the physical lengths, and they are the numbers everyone prints. The declared distances are shorter on four of the six directions because four thresholds are displaced to clear marker posts and dunes. Landing distance available on runway 29 is 597 metres — a quarter of a kilometre less than the 846 metres the field is routinely credited with.

Opening hours in the AIP are given as Monday to Saturday 1030 to 1530 and Sunday 1100 to 1215, followed by the qualifier that aerodrome availability is subject to tidal variation. The flight information service section adds that the hours regularly change because of the tide and that pilots should consult Barra FIS.

The warnings section is the finest piece of writing in any AIP we have read. The landing and take-off areas may be considerably ridged by hard sand and contain pools of standing water. The bearing strength, braking action and contamination of the beach is unknown, variable and unpredictable. And then this: pilots should be aware that cockling activities frequently take place between the runway markers and the tide-line, with pedestrian and vehicular activity that from the air may appear to infringe the runway thresholds. A flashing white light on top of the control tower advises the local cocklers that an aircraft movement is imminent, and is in no way to be used as a navigational aid by aircrew.

Maintaining it is a job nobody else in commercial aviation has.

He also noted that there had never been an accident, though an aircraft sometimes gets stuck in the loose sand, and that you have to be prepared for anything there — including, on separate occasions, a two-metre dead shark on one runway and a dolphin on another. Annag Bagley, a Loganair pilot born and raised on Barra, put the schedule more simply: the flight schedule naturally takes the tide into account, as one cannot land during high tide, which is why the two daily flights to Glasgow fall within two hours of each other. The flights, she said, are a lifeline for the island.

BBC Scotland at Barra, where the runway markers are posts in the sand and the tide decides the timetable.

St Barth: the rule is the weight, not the seats

Gustaf III Airport on St Barthélemy has 646 metres of concrete, 18 metres wide. Take-off on runway 28 is prohibited outright. Night landings are prohibited on both runways, with a single carve-out for medical evacuation flights, limited to pilots individually authorised by the civil aviation safety directorate and to operators that have signed a night-MEDEVAC protocol with the aerodrome manager.

You will read everywhere that St Barth is limited to aircraft of nineteen seats or fewer. That limit is not in the AIP. What is in the AIP is a pavement strength of 5.7 tonnes and a maximum tyre pressure of 0.9 MPa, plus parking stands defined by reference aircraft — DHC-6 on most of them, PC-12 on others, and code A with a wingspan under 11 metres on the rest. Nineteen seats is the consequence of the weight cap, not the regulation. A nineteen-seat Twin Otter at 5,670 kg only just clears it.

The AIP never mentions the Col de la Tourmente, the ridge the arrival famously dives over. It does something better. The remark for runway 10 records a steep slope of the runway strip upstream of the threshold; the remark for runway 28 records that the strip upstream is partially sandy, which is the polite way of saying the far end is St Jean beach. And a special runway edge marking sits 267 metres past threshold 10.

Four jurisdictions, four completely different legal devices

The thing these airports share is not a length. It is that each one has forced its national regulator to invent a way of restricting who may use it, and every regulator reached for a different tool.

In Europe the binding rule is ORO.FC.105 in Regulation (EU) No 965/2012, which requires an operator to designate as commander only a pilot with adequate knowledge of the aerodromes to be used. The famous Category A, B and C classification is not in the Regulation at all. It lives in the Acceptable Means of Compliance, AMC1 ORO.FC.105, which says the operations manual should describe the method of categorisation and list the aerodromes categorised as B or C. Category C is defined simply as an aerodrome that requires additional considerations to a Category B aerodrome, and before operating to one the commander should be briefed and visit the aerodrome as an observer or undertake instruction in a suitable simulator.

Which means the list of Category C aerodromes in Europe lives inside each operator’s own operations manual. There is no public register. That is a large part of why the public conversation about these airports is driven by cockpit videos rather than by documents.

There is a further wrinkle worth knowing. ORO.FC.105(d) switches the twelve-month aerodrome recency requirement off entirely for performance class B aeroplanes in commercial operations under VFR by day — which describes Saba, Barra and St Barth. Writers who cite the twelve-month rule for those fields are citing a provision that does not apply to them. Their competence regime comes from the operator’s manual and the State’s own aerodrome approval instead.

Europe also writes the exception explicitly. CAT.POL.A.250 says short landing operations require prior approval by the competent authority, and among the conditions is one that reads like a description of this entire article: that the State of the aerodrome has determined a public interest and operational necessity for the operation, either due to the remoteness of the aerodrome or to physical limitations relating to extending the runway. The declared safe area used in the calculation may not exceed 90 metres, and minimum pilot experience, training and special aerodrome familiarisation requirements must be specified and met.

The United States solves the same problem differently. Under 14 CFR 121.445 the Administrator may determine that certain airports are special airports requiring special airport qualifications, and no certificate holder may use a pilot as commander there unless within the preceding twelve calendar months that pilot has made an entry to the airport, o has qualified by using pictorial means acceptable to the Administrator. A video package can substitute for the visit. The European AMC asks for an observer flight or a simulator session.

France uses a third device entirely — the per-site altiport authorisation described above, grounded in an arrêté rather than in European law, with St Barthélémy governed by its own restricted-use order dating to 1972 and amended as recently as April 2026. And Germany supplies a fourth: Helgoland-Düne, whose own published conditions simply demand a minimum of 100 hours as pilot-in-command before you may fly there at all.

What the record books get wrong

This is the part of the subject where almost every published list repeats the same errors, so here they are.

Saba’s Guinness entry is wrong twice. It gives the runway as 1,300 feet, where the AIP figure of 401 metres is 1,316 feet, and it places the airport in the Netherlands Antilles — a country dissolved on 10 October 2010, fourteen months before the record date of 12 December 2011. The substance of the claim survives: Saba really is shorter than Helgoland-Düne at 480 m, Lukla and Papa Westray’s main strip at 527 m, St Mary’s at 522 m, Courchevel at 536 m and St Barth at 646 m. But it needs phrasing carefully, because Papa Westray’s runway 06/24 is physically 293 metres with a take-off run available of 252 — shorter than Saba. It is grass, unlit, and not the runway the scheduled service uses. The accurate formulation is “shortest runway in regular scheduled commercial use”.

Paro does not belong on these lists at all. Bhutan’s Department of Air Transport gives its single asphalt runway as 1,964 metres, longer than many European regional airports. Paro is a terrain and approach story, not a short-runway story.

Tioman is published everywhere as 1,006 metres. The Malaysian AIP says 913. It earns a place anyway, as a second clean example of a one-way field: landing on 20, take-off on 02, because of the hills.

Matekane in Lesotho, with its famous cliff, has no verifiable published data. No AIP entry, no authority document, no evidence of scheduled service. Every figure in circulation traces back to listicles and flight-simulator scenery. We are not printing a length for it.

Westray and Papa Westray are not HIAL aerodromes. Both are run by Orkney Islands Council. Only Barra among the three belongs to Highlands and Islands Airports. The 2.74 km Westray to Papa Westray hop is, correctly, the world’s shortest scheduled domestic flight.

And nobody can tell you how much runway a 737 needs, because Boeing does not publish such a number. Its 737 MAX airport planning document says the aeroplane is certified to operate up to its maximum take-off weight and that the airplane flight manual provides field length requirements up to MTOW. What Boeing publishes instead is an ICAO aerodrome reference code that changes with weight: a 737-8 is 3C at 171,000 lb and 4C at 182,200 lb. Any single-number field length you have seen for a 737 was read off a chart at unstated conditions, or invented. The types that do publish discrete figures are the small ones — the Twin Otter above, the Britten-Norman Islander at 371 metres to 50 feet, the Pilatus PC-6 Turbo Porter at 440 metres.

The point

Saba is not remarkable because it is 401 metres long. Plenty of farm strips are shorter. It is remarkable because a nineteen-seat airliner lands there on a published timetable, and that is only possible because a regulator in the Netherlands maintains a list of who is allowed to do it, and an operator maintains performance data that the manufacturer’s own brochure footnotes as needing exactly that approval.

Take the paperwork away and these are not short runways. They are closed ones.

Sources: Dutch Caribbean ANSP eAIP, AD 2 TNCS (2024-08-08); AIP France, carte VAC AD 2 LFLJ and AD 2 TFFJ, AIRAC 01 Oct 2026; UK AIP AD 2 EGPR, EGHE, EGEP and EGEW, AIRAC 01 Oct 2026; Civil Aviation Authority of Nepal, Tenzing-Hillary Airport; Government of Nepal Aircraft Accident Investigation Commission report on Tara Air 9N-AET; Malaysian AIP AD 2 WMBT; Bhutan Department of Air Transport; Gemeinde Helgoland; De Havilland Aircraft of Canada; Britten-Norman; Pilatus; Boeing D6-38A004 Rev K; Commission Regulation (EU) No 965/2012 and AMC1 ORO.FC.105; 14 CFR 121.445; Guinness World Records; CNN Travel; AOPA Pilot; Airline Ratings; HIAL.