The first step toward stress-free flying is learning the Weight For Carry On Luggage Delta travelers should keep in mind, plus the 56 x 35 x 23 cm size limit. Although most flights have no strict weight rule, an overloaded bag is hard to lift and carry. Use packing cubes to organize outfits, wear your bulkiest jacket onboard, and keep chargers and documents in your personal item. Smart packing saves time at the gate and keeps your journey comfortable.