The "better" choice depends on your trip duration and budget. In 2026, carry-on is superior for short trips (under 7 days), as it eliminates baggage fees, saves time at the carousel, and removes the risk of the airline losing your bag. It is the preferred method for "efficient" travelers using capsule wardrobes. However, checking luggage is better for extended travel (over 2 weeks) or for families, as it allows for larger liquid containers, specialized gear (like hiking poles or bulky winter coats), and removes the physical burden of maneuvering a heavy bag through the terminal. With the widespread adoption of AirTags and digital bag tracking in 2026, the anxiety of "lost luggage" has decreased, making checking a bag a much more viable and stress-free option for those who don't want to play "overhead bin Tetris" during the boarding process.