Top 10 Most Expensive Military Planes #4
P-8A Poseidon: $290 million![](//cdn.shopify.com/s/files/1/0264/1659/files/next-button_compact.png?8051)
Boeing's spruced-up military version of its 737 jet will be used by the Navy to conduct anti-submarine warfare and gather intelligence. It can carry torpedoes, missiles, depth charges and other weapons. The P-8A is expected to go into service in 2013.
FULL P-8A SPECS HERE