United Airlines Holdings Inc. has reported record revenue, with CEO Scott Kirby stating that the Sunday after Thanksgiving was the most profitable day in the company's history. Kirby expressed optimism about December, predicting it to be the best month ever for the airline, driven by strong international travel demand. Additionally, United Airlines is expanding its operations at Dulles International Airport following a significant investment. In related news, JetBlue Airways has also raised its fourth-quarter revenue forecasts, citing better-than-expected bookings for November and December, particularly following the Thanksgiving holiday. JetBlue's stock rose by 5.6% after the announcement, reflecting the positive outlook on travel demand.