I'm flying with Delta from Heathrow to Boston and am looking to buy a 4 wheel case. The description dimensions are 20" x 14" x 10" (51cm x 36cm x 26cm).
Delta state the following:
Baggage may not exceed 45 linear inches (or 114 cm) in combined length, width and height, including any handles and wheels
Baggage must fit easily in the Carry-on Baggage Check (approximately 22" x 14" x 9" or 56 x 35 x 23 cm), which is located near the check-in counters.
Should I be worried about the odd few extra centimetres?