Serko had assumed in its forecasts that travel volumes would be transacting in a range of 40-70 per cent of pre-Covid levels by this month.
"We are also seeing daily transaction volumes reaching their highest rate since Covid started materially impacting Serko's travel volumes in mid-March 2020, and are pleased to note that some of this uplift is reflective of continued onboarding of new customers in Australasia despite the effects of Covid," Grafton said.
"These positive trends follow ongoing volatility over the past few months as a result of further Covid-related travel restrictions, which saw transaction volumes range from 58 per cent of prior year volumes for the month of December 2020, 40 per cent for January 2021 and 51 per cent for February 2021."
Serko hoped to see these positive trends continue with the vaccination programmes under way in key markets and with travel restrictions progressively lifting.
Shares in the company last traded at $6.30, up 22 cents or 3.6 per cent since Friday's closing level.