Originally Posted by BKM76

You might be able to get calls from some airlines without flying in the last 18 months, but you're always going to have to get over the hurdle of not having flown in a year and a half. Show them that you made an effort to ensure you can still fly a plane and you're going to make it 20 times easier on yourself to get past that.

My advice, get a flight review and an IPC, and if you need a few extra flights with a CFI to get those done, then do it. The airlines don't want to step into questionable territory if they don't need to, so your app would likely be thrown to the bottom of the pile if you don't have any flight time recently.