suitcase sizes

[Linda51]

We have just purchased two suitcases for hopefully carrying on the aircraft. The cases measure
51 x 33 x 18cm, then the wheels are extra and measure 5cm making the overall height 56 cm.,are these the correct size for carrying on the plane or are they to big. Thanks.

[Buenchico]

Your suitcases conform to the current security regulations. Some airlines have slightly stricter rules. For example, the total height of your suitcases is just 1cm greater than that permitted by Ryanair. However, Ryanair staff don't normally check bag dimensions unless they look considerably bigger than what's officially permitted.

See here for a more detailed answer:
http://www.theanswerbank.co.uk/Travel/Question 597090.html

Chris