Student organisations in all Nordic countries establish travel agencies.

SSTS, Scandinavian Student Travel Service, was established by the Scandinavian student travel agencies with the objective of purchasing flight seats jointly on behalf of all the companies. The Nordic student travel organisations were:
DIS Rejser (Denmark), Travela (Finland), Univers Reiser (Norway) and SFS Resebyrå (Sweden).
Over the years SSTS developed into a travel organisation specialized in production and wholesale of student and youth tours.  Besides its founders SSTS served other student and youth travel agencies in Europe and the US, and SSTS became a major travel operator, topping with 700,000 sold flight seats in 1973. However, the global oil crisis in 1973/74 changed the picture totally.

SSTS is reorganised into a limited company. The majority shareowner is HYY Group, which is owned by The Student Union of Helsinki University.

SSTS opens a wholesale company in Spain.

SSTS and the Nordic travel agencies are merged into one group with SSTS as the mother company. The group’s name is changed to KILROY.

KILROY acquires the German youth travel agency ARTU.

KILROY establishes own sales company in the Netherlands.

Axcel IndustriInvestor a.s., Copenhagen takes over an equity stake in the mother company, KILROY travels International A/S.

KILROY acquires Benns Rejser A/S in Holstebro, Denmark. The company name of Benns Rejser is later changed to MyPlanet.

The KILROY Group is divided into the 3 business units, KILROY Individual Travel, KILROY Group Travel and MyPlanet.

KILROY acquires the Danish group travel company TEAM TRAVEL, and all group travel activities in MyPlanet and KILROY travels Denmark are merged into the new company KILROY group travel A/S.
KILROY travels Germany - ARTU GmbH is sold.

KILROY acquires the Danish ski group travel operator “Peer Gynt”. 
MyPlanet acquires 1/3 stake of the Australian based Bentours Pty. Ltd.

KILROY stops trading in the Spanish market.

MyPlanet acquires the remaining 2/3 stake of  Bentours Pty. Ltd., Australia.
KILROY divests of the business unit MyPlanet.
KILROY acquires the new ski operator Ski-experten.

KILROY acquires the ski operator Qvistgaard rejser.
HYY Group takes over Axcel IndustriInvestor a.s’ equity stake in KILROY travels International A/S.

KILROY acquires all educational activities from International Education Centre (IEC), Norway.

The ownership structure is changed. A group of Nordic investors acquires 100% of the shares in KILROY travels International A/S.

KILROY acquires all educational activities from IEC Online, Finland.

The name of the parent company of the Group is changed to KILROY International A/S.