Carry On Luggage Size Requirements 2025 United Airlines. Summary of united airlines luggage policy united airlines luggage policy. Checked bags on united airlines are allowed to be a maximum size of 30” x 20” x 12” (76 cm x 52 cm x 30 cm) or 62 total inches, which includes wheels and handles.
Checked bags on united airlines are allowed to be a maximum size of 30” x 20” x 12” (76 cm x 52 cm x 30 cm) or 62 total inches, which includes wheels and handles. However, the dimensions for these items are.