Yes, Carriers and aircraft move independently, but the rulebook just states, that warships may not move …! It states nowhere, that aircraft can’t move to any seazone. They are not allowed to land on any allied terretorry or aircraftcarrier, but they can of course fly ther and if there is a legal landing spot, land there. The planes are not restricted to not move into the atlantic, they (in most cases) can’t land and therefore can’t stay there.