Clarity customers will avoid paying a surcharge when booking British Airways and Iberia tickets.
The travel management company has negotiated a waiver with the airlines on their distribution content surcharges.
Chief executive Pat McDonagh said: “Our agreement forms part of a wider commitment to work with British Airways to develop New Distribution Capability (NDC) connectivity which will enhance the booking and traveller experience.”
Clarity is the eighth biggest TMC in the country, with a turnover of £420million and more than 500 staff at its offices in the UK, Ireland and the Netherlands. It is part of the Portman Travel Group.