I live in airline base and I'd only call one other airline guy a close friend. Everyone else is from church, kid's soccer, Scouts. Especially if you commute, you probably will have zero airline friends.
I'll say it was a little lonely the first year or two after leaving the AF cocoon. Nobody I met (except one sheriff's deputy) could remotely relate to my last decade+. But, the longer I'm out, the less I can relate to my active time and the more I relate to my civilian friends. Now that I'm not dealing with deployments, PCSs, MPF, and the latest OPR drama, I relate more to my civilian friend's preteen problems, their public school gripes, their IRA strategies, and that spot in their yard where grass just will not grow. None of those things are airline-related, so they're easy to build relationships around.
I assume you're a reasonably well adjusted officer. You'll do fine.