ASL Aviation Holdings

When a white Boeing 737 with a large cargo door touches down at night in Liège, Cologne or East Midlands, there is a good chance it belongs to ASL Aviation Holdings. The group from Swords near Dublin hardly shows itself, but through its subsidiaries it operates a large share of express cargo flights in Europe. The two most important are called ASL Airlines Ireland and ASL Airlines Belgium – and behind both lies an eventful history that spotters still know from Air Contractors and TNT Airways.

A group that flies in the background

ASL Aviation Holdings is a holding company, not an airline. It has neither its own airline code nor its own flight numbers. The flying is done by subsidiaries, each of which holds its own operating certificate in its country: ASL Airlines Ireland, Belgium, France, UK and Australia. Joint ventures in Thailand (K-Mile Asia) and India (Quikjet Airlines), leasing companies and engineering businesses come on top.

Most of the business revolves around express cargo. Parcel carriers and online retailers rent aircraft, crew, maintenance and insurance from ASL as a package – in the industry this is called ACMI or wet lease. How this model works is explained in the article Wet lease explained. The group website names UPS, Amazon, DHL and FedEx as customers.

The figures come from the group’s 2026 statements. Since 2019, the entire group has belonged to the European financial investor STAR Capital. Before that, the Belgian shipping company Compagnie Maritime Belge held 51 percent and 3P Air Freighters 49 percent.

From Air Bridge Carriers to ASL Airlines Ireland

The Irish subsidiary is the oldest part of the European business – and it did not begin in Ireland at all. In 1972, the cargo airline Air Bridge Carriers was founded at England’s East Midlands Airport. From 1992 it was called Hunting Cargo Airlines, and in 1997 flight operations moved to Ireland. A year later, the Hunting group sold the airline, and it became Air Contractors – a name many spotters still have in mind today.

Under that name, the company flew cargo flights across Europe for almost two decades. In 2008, the group took over the French Europe Airpost and operated as ASL Aviation Group. In 2015 came the unified brand: Air Contractors became ASL Airlines Ireland.

Today the airline is based at the group headquarters in Swords and, according to available information, has its focus in Dublin, Shannon, East Midlands and Paris Charles de Gaulle. At Shannon Airport, it operates its own maintenance hangar. You recognize its radio traffic by the ICAO code ABR and the callsign CONTRACT – both still date from the Air Contractors era.

The Irish subsidiary’s fleet is the most varied in the group. Besides the Boeing 737-800BCF and other 737 freighters, it flies the Airbus A300-600F – a type that is slowly becoming rare in Europe. For short feeder flights it uses ATR 72 freighters, and on longer routes also converted A330 freighters. The exact number per type changes constantly because aircraft move between subsidiaries; if in doubt, check current numbers in a fleet database (as of October 2026).

From TNT Airways to ASL Airlines Belgium

The second big subsidiary has a completely different origin. In 1999, TNT Airways began operations in Liège, the in-house airline of the Dutch parcel carrier TNT Express. Liège became the company’s European hub; at first BAe 146-300s and Airbus A300s flew there, and from 2003 Boeing 737-300s as well.

The turning point came in 2016. FedEx took over TNT Express – but under the EU rules on ownership and control, an airline in European ownership could not simply go to a US group. TNT therefore sold its flight operations to ASL: TNT Airways in Liège and the Spanish Pan Air in Madrid. At the same time, both sides agreed on a multi-year contract so that ASL would continue to fly for the combined FedEx-TNT network. The Liège hub itself stayed with FedEx. TNT Airways became ASL Airlines Belgium, and Pan Air became ASL Airlines Spain, which, however, ceased flight operations as early as 2018.

Today ASL Airlines Belgium flies from Liège and Paris Charles de Gaulle. According to its own website, the fleet comprises around 30 aircraft, from the Boeing 737-400SF and 737-800BCF to the Boeing 747-400F and -400ERF. Besides the European networks for express customers, the airline also offers long-haul cargo, including to China, Japan and the USA. On its website, it most recently reports weekly rotations between Liège and the Chinese cargo airport Ezhou, as well as cooperation with Japan Airlines and Nippon Cargo Airlines.

For long-haul, the group bought two 747-400ERFs with the registrations OE-IFB and OE-IFD in August 2026, which it had previously leased. Both are operated by ASL Airlines Belgium. For you as a spotter, that means: the jumbos remain part of the Liège picture for now.

The other subsidiaries at a glance

Besides Ireland and Belgium, other flight operations belong to the group. They are of varying relevance for spotters in central Europe.

ASL Airlines France is the only European subsidiary with significant passenger service. As Europe Airpost, it flew mail for La Poste at night and charter flights during the day – a pattern it continued under its new name. Today it connects French airports with North Africa and flies charters across Europe.

The group continues to grow in Australia. The subsidiary there flew ten aircraft in 2026, including BAe 146-300s in the quiet QT freighter version. In May 2026, it conditionally agreed to take over Airwork’s cargo business in New Zealand and Australia; in August, the group announced it would expand the Australian fleet with further 737-800BCFs.

One chapter is just about to close: ASL held a stake in the South African low-cost airline FlySafair. In February 2026, the group announced it would sell this stake to the investment group Harith.

Identifying ASL jets in the field

For spotters, ASL is a classic identification puzzle. Many aircraft are simply white, bearing only the titles “ASL Airlines” or a customer’s colors. The registration helps only to a degree, because part of the Belgian fleet is entered in the Austrian register. These clues will still lead you reliably to the answer:

How to tell cargo versions apart by doors, windows and antennas is shown in the article Identifying cargo aircraft. And if you want to find a specific aircraft again, the guide Tracking an aircraft by registration helps. The basics of live tracking are provided by the article Flight tracking with ADS-B.

Where to see ASL aircraft

The best address is Liège Airport. ASL Airlines Belgium is based there, and besides the 737 freighters, the 747s also come by regularly. Where to stand at the fence is described in the spot guide to the spotter spot in Liège.

For the Irish subsidiary, Dublin Airport is worthwhile, with the well-known vantage point The Mound. In England, East Midlands Airport is interesting – not only because it all began there in 1972, but because it is one of the most important cargo hubs in Britain. The East Midlands Aeropark lies right at the airfield.

In Germany, you meet ASL jets mainly at airports with night cargo, such as Cologne/Bonn or Leipzig/Halle. Which customers ASL serves there at any time changes with the contracts. Many movements fall in the late evening and early morning, depending on the airport’s night flight rules – a look at the tracker is worthwhile before every trip.

ASL compared with other cargo groups

ASL does not stand alone. The Lithuanian-Irish Avia Solutions Group also works with ACMI airlines but relies more on passenger jets of the A320 family. DHL Aviation, by contrast, is the airline division of a parcel carrier itself – with European Air Transport Leipzig as its best-known subsidiary. The German Zeitfracht Group combines air cargo with logistics on the ground.

The difference from ASL: the Irish group owns no parcel carrier of its own but sells flying capacity to several customers at once – sometimes even to competitors. That is exactly why ASL jets show up in so many different networks.

Conclusion

ASL Aviation Holdings is one of the big names in European express cargo, even if hardly any passenger knows it. Under the roof in Swords are two airlines with spotter history: the former Air Contractors as ASL Airlines Ireland and the former TNT Airways as ASL Airlines Belgium. Subsidiaries in France, Great Britain and Australia as well as stakes in Asia come on top.

For you as a spotter, one thing counts above all: only callsign, ICAO code and registration reveal who is really flying. Once you have internalized that, you will quickly place the white freighters in Liège, Dublin or Cologne/Bonn correctly – and enjoy types that disappeared elsewhere long ago.