Airlines as a general rule don't want to hire someone who will result in a newspaper article talking about how "Clazzy, a _____ airlines pilot, was arrested for _______." If you have had one arrest and that's it and you keep your nose clean you may be ok. If you've had a couple already it's a tough question. Regardless, you need to not do things that are going to get you arrested if you want to be an airline pilot. You will be reporting that arrest on every job application you fill out, and you will be answering questions about it if interviewed. If you have more than one it will be tough to make it past the computers at a major (I expect one doesn't stop you from getting past hat point at least). You may still be able to go to a regional but the longer a timespan you have showing repeatedly doing things to get you arrested the harder it will be.