[salvadors]

> the size for carry-on luggage is pretty large

That's not so true in Europe, where many airlines have a quite strict size and weight limit (e.g. 8kg @ 55cm x 40cm x 20cm)

[rtkwe]

The size is basically the same everywhere because there's limited difference in the planes. EG American Airlines which I just flew has the limit of 56 x 36 x 23 cm. Big enough for a one week duffel easily.