Online comparison site Dealchecker says it is on track to hit 250,000 members before the end of this month.
The site has doubled subscriber numbers for its newsletter since January. The newsletter is e-mailed to subscribers weekly and lists 20 of the best deals in the market.
In addition, overall traffic to the site has doubled year-on-year and is likely to hit 500,000 visitors a month in May. Unique visitor numbers reached 450,000 in April.
In the year to date dealchecker.co.uk estimates it has generated travel product sales of more than £35 million for travel partners.
Dealchecker is currently developing cruise and holiday systems for the site with releases scheduled for the next few weeks.