St. Louis Lambert International Airport experienced severe congestion on Sunday, with traveler lines extending nearly to the nearby I-70 highway. The surge in passenger volume was largely attributed to delegates departing from the Seventh-day Adventists’ General Conference. Southwest Airlines was reportedly understaffed during this period, resulting in check-in lines lasting several hours and causing numerous missed flights. The situation led to widespread delays and frustration among passengers. By Monday, the airport saw a reduction in lines. Separately, passengers on an American Airlines flight from Philadelphia to Hartford reported being stranded overnight at the airport for nearly 24 hours without clear communication from the airline.