By flight odyssey
You’ve seen it. Someone forcing a bag into a metal sizer. Same bag. Different day. Suddenly not allowed.
Carry-on rules are not just measurements. They depend on: • Airline policy • Aircraft type • How full the flight is • How strict staff are that day
Airlines separate bags into: • Carry-on → overhead bin • Personal item → under the seat Some fares include both. Some include only a personal item.
Cheap tickets often include personal item only. Bring a roller bag? You may pay at the gate. Always check this first.
Some airlines weigh carry-ons. More common when: • Low-cost carrier • Full flight • Smaller aircraft • Heavy-luggage routes
Under-seat space varies by: • Aircraft • Seat location • Bulkhead & exit rows Barely-legal bags struggle here.
Rules tighten when: • Flight is full • Fare is low-cost • Airport is strict • Bag looks oversized
Rollers: easy, but risky on basic fares Backpacks: flexible, easy to overfill Duffels: forgiving, but dangerous when heavy Shape control is key.
👉 Use this guide before every flight and stop paying surprise baggage fees. Swipe Up!