Don’t make a run for it, and don’t panic. In extreme situations, principal transportation hubs will have already been alerted to keep you from leaving the country.
Avoid the temptation to give yourself up without thinking this through. Come up with a plan and inform other people who can help you after booking with bail and other things.
The warrant is not going to disappear, so it is best not to ignore it. Bear in mind that there is no expiration day for an arrest warrant.
Do not overreact. Having a Pennsylvania warrant doesn’t automatically mean you are going to spend even one night in jail. It could be that a fine needs to be paid or a new court date scheduled.
Retain an Pennsylvania attorney. Even though this will cost you money, the guidance you get will be indispensable as your case proceeds. A legal representative can help you determine how best to give up to the police if that is the plan you need to take. It is useful to get your bail worked out ahead of time so that you can leave jail as quickly as possible.