Some ships have a flightdeck that can launch fighter and bomber planes. By request, I have listed the current crop.
Full flightdeck:
IJN CA Mogami 1944, tier D (shipyard) and C
IJN CL Oyodo, tier D (shipyard) and C
IJN CL Agano, tier B
IJN BB Atago, tier S
IJN BB Ise (1943), tier A
SN BB Project 69SE, tier S
MN CL De Grasse, tier B
MN BB Strasbourg, tier C, B and A
RN BB Italia, tier S
Small flightdeck (2 fighters, 3 torpedo bombers, 3 dive bombers, 1 squad):
IJN CA Asama, tier C
IJN SS I54, tier A (shipyard)
IJN SS I400, tier B, A and S
IJN SS Kai-Kou type, tier B and A
MN SS Surcouf, tier S
As always, let me know if I've missed some ships. Cheers folks!