In 2026, the Sunday after Thanksgiving remains the single worst day of the year for both road traffic and airport congestion. While Saturday is also a very busy "return-home" day, Sunday is the "peak of peaks" as the vast majority of students, workers, and families attempt to return home before Monday morning. According to 2025 and 2026 travel data, the worst congestion window on Sunday is between 11:00 AM and 8:00 PM, particularly on major interstate corridors. Airports also see record-breaking volumes on this day, often surpassing 3 million passengers in the U.S. alone. If you must travel on this weekend, Saturday is the statistically better choice; while still busy, the traffic is more spread out. For the smoothest possible experience, travel experts suggest leaving before 10:00 AM on Saturday or waiting until the Monday afternoon or Tuesday after the holiday to avoid the "Sunday squeeze" that often turns 4-hour drives into 8-hour marathons.