On Monday, over 1,300 flights within the United States were cancelled due to the intensification of Hurricane Beryl, which made landfall in Texas. By 8:16 am ET, a total of 1,354 flights had been cancelled and 773 were delayed, according to FlightAware, a flight tracking website. United Airlines topped the list with 405 cancellations, followed by Southwest Airlines with 268. Southwest Airlines announced it was closely monitoring the situation and had proactively adjusted its Monday flight schedule in Houston and southern Texas in response to the hurricane. Both United and Southwest issued travel advisories, noting that Hurricane Beryl was affecting flights at several airports, including Austin, Corpus Christi, Harlingen, and Houston, among others in the region. Beryl, the earliest Category 5 hurricane on record for the season, made landfall near Matagorda, a coastal town in Texas, early in the day, bringing dangerous storm surges, according to the U.S. National Hurricane Centre (NHC). Additionally, the largest ports in Texas ceased operations and vessel traffic on Sunday as Beryl intensified. The Federal Aviation Administration had previously warned on Friday about thunderstorms affecting travel across the country.