Solent Sky tells the aviation story Southampton can genuinely claim: seaplanes, flying boats, and the Supermarine Spitfire. The collection is compact but strong, with aircraft and displays tied to the Solent's role in British aviation rather than a generic air-museum narrative.
It is especially good if you are interested in the Spitfire, which was designed and first flown locally. The museum pairs well with Southampton's maritime history, showing that the city's transport story was never only about ships.