The network, based on switching hardware from Aruba, will be deployed by React Technologies over the next two months at Lastminute.com's London head office.
As part of the contract with React, the supplier will provide Lastminute.com with network specification, planning, configuration and installation, as well as training and support.
Matt Hobbs, head of technical services at Lastminute.com, said, "We believe that the introduction of wireless networking will not only prove cost-effective, but also help our people to offer a better service."
Lastminute.com has also announced that it is extending its joint initiative with UK rail retailer TheTrainline to cross-promote hotel and train booking deals.
Under the agreement, customers booking train tickets on TheTrainline will be presented with Lastminute.com hotel offers matching their destination and travel dates. The new functionality will allow them to purchase train tickets and book hotels simultaneously as part of the same transaction.
This facility has been made possible by an XML feed from Lastminute.com to TheTrainline, giving access to the hotel offers available in Lastminute.com's Informix database.