(KFYI News) It was March Madness at Phoenix Sky Harbor International Airport this year.

March 2014 was the busiest month in the history of the airport with over 4 million passengers.  It was a 3.2 percent increase over March of 2013 and the first time in the airport's history that it has seen over 4 million passengers in a  single month.

Spring training, students on spring break and the weather brought visitors to the Valley in record numbers.  Hotels and resorts saw a 2.9 percent increase in occupancy in March this year compared to last.  Tourists spent over $19 billion every year in the state.