UPDATE 1-Travelport's IPO values Blackstone-backed firm at $1.9 bln
September 11, 2014 at 18:18 PM EDT
Sept 11 (Reuters) - Airline ticketing company Travelport Worldwide Ltd's initial public offering is expected to be priced at $14-$16 per share, valuing the Blackstone Group LP -backed company at $1.9 billion at the top end of the range.