** Shares of travel and cruise company Viking Holdings VIK.N fall as much as 10.7% to more than a four-month low of $38.16

** Stock last down 6.4%, set for worst day since August 2024, if losses hold

** "Following a record revenue book month in January, we are seeing that February is a little bit slower. This is probably a reflection of the uncertainties in the world," Viking CFO Leah Talactac says

** VIK beats quarterly revenue and profit estimates

** Shares of the "Big Three" U.S. carriers also down on Tuesday after downbeat forecasts from Delta Air Lines DAL.N and American Airlines AAL.O

** U.S. companies are now concerned about a slowing economy following the chaotic hyper-focus on tariffs since President Donald Trump took office in January

** Including session moves, VIK shares down more than 10% YTD

(Reporting by Ananya Mariam Rajesh in Bengaluru)

((AnanyaMariam.Rajesh@thomsonreuters.com ; X: https://twitter.com/AnanyaMariam;))