** Shares of some U.S. airline cos fall after rallying on Wednesday on President Donald Trump's 90-day pause on tariff plan

** American Airlines AAL.O down 13%, United Airlines UAL.O down 11%, JetBlue JBLU.O down 13%, Southwest Airlines LUV.N down 10%

** Delta Air Lines DAL.N down 11%; at least three brokerages cut PT on stock after co pulled 2025 financial forecast

** Shares of some online travel agencies also fall in afternoon trade

** Booking Holdings BKNG.O down 4%, Tripadvisor TRIP.O down 11% and Expedia EXPE.O down 8%

** Including session losses, S&P 500 Transportation Index .SPLRCTRN down 6.2% YTD

(Reporting by Anshuman Tripathy)

((Anshuman.Tripathy@thomsonreuters.com))