Ever wondered if your flight is on a vintage jet? Turns out, United has the biggest—and oldest—fleet in the US, with some planes pushing 34 years old! Delta actually has the oldest single plane still flying, but their average fleet age is a bit younger. Meanwhile, Southwest keeps it simple with only Boeing 737s, but rising costs are forcing them to ditch perks like free bags. So next time you book, you might be flying on a classic! #TravelTips #AirlineLife #MoneyHacks #Business