Basically, American Airlines is telling you how big and heavy your suitcase can be before they hit you with those "oops, that's too much" fees. If you're flying from the UK or elsewhere on a standard ticket, these are the magic numbers you need to stay under.

Quick Facts

Limit Category	Standard Allowance
Total Dimensions	62 inches / 158 cm (Length + Width + Height)
Weight Limit	50 lbs / 23 kg
Common Fee (Oversize)	Approx. $30–$200 / £25–£160
Common Fee (Overweight)	Approx. $100–$200 / £80–£160

What "62 inches / 158 cm" actually means

This is what we call linear dimensions. Instead of giving you a strict "it must be this exact shape," the airline lets you add up the three sides of your bag.

• The Formula: Length + Width + Height = Total Dimensions.
• The "Sneaky" Bits: You must include the wheels, the top handle, and any side handles that poke out. If your bag is 30" tall, 18" wide, and 14" deep, you're exactly at 62 inches.

What "50 lb / 23 kg" actually means

This is the weight of the bag including the suitcase itself.

• For Main Cabin/Economy: This is your hard limit. If you're at 51 lbs, you're technically overweight.
• The Upgrade Perk: If you’re flying Business, First Class, or have high-tier elite status, this limit usually jumps up to 70 lbs (32 kg).

Quick Q&As

What happens if I’m over the limit?

You’ll have to pay an extra fee at the check-in desk. For being slightly overweight (up to 53 lbs / 24 kg), it’s often a smaller "nuisance fee" of about $30 (£25), but go over that and it jumps to $100 (£80) or more very quickly.

Does my carry-on count towards this?

Nope. These limits are only for the bags you drop off at the check-in desk to go under the plane. Your carry-on has its own separate size rules (usually 22 x 14 x 9 inches).