Selecting luggage that meets airline specifications is an important part of preparing for your flight. Carry On Luggage Air Canada with maximum dimensions of 21.5 × 15.5 × 9 inches, including wheels and handles. A personal article, such as a purse, briefcase, or laptop bag, must fit within 17 × 13 × 6 inches. Oversized baggage may need to be checked, potentially resulting in additional charges. Economy Basic passengers travelling on certain routes have more restrictive allowances, so reviewing the applicable rules beforehand can help ensure a smoother airport experience.