I looked into this recently when I was booking a JetBlue flight with a friend who’s active duty, and we were both curious about seat upgrades for military passengers. From what we experienced, JetBlue doesn’t guarantee free seat upgrades just for military status, but they do offer some flexibility and perks depending on availability. We called 8 4 4-7 3 4-0 8 1 3 to ask directly, and the agent explained our options clearly, including paid upgrades to Even More Space seats. They also helped us adjust the booking when plans shifted. Calling made everything much clearer and saved us a lot of guesswork compared to trying to figure it out online.