Did you know you can be denied boarding an international flight even if your passport and visa are perfect? Travel pro Sophia Lee says airlines want to see proof of a return or onward ticket—no ticket, no flight! Even a cheap bus ticket out of the country counts. Her other hacks: only use a carry-on, stuff extra things in a pillowcase, and wear layers to dodge baggage fees. Thailand’s her top pick for solo travelers! #TravelHacks #AirportTips #SoloTravel #TravelSmart #BudgetTravel #Travel