Is there a place at the Portland Airport where travelers can store luggage overnight for a few days? If so, is there any contact information (email, phone no.,) you can pass along to provide additional information? Thanks.

Yes, but the answer is dependent on the airline you patronized. The free option is through the airline whom you purchased your ticket. They should have a holding area where they keep their unclaimed luggage. You can store your PURCHASED CHECKED LUGGAGE with them in the same holding area. You will need to provide a valid photo ID, contact info, and a pick up date and time. This is all depending on each airline's discretion and policies. The paid option is through an online service called Luggage Mate or Luggage Home I think. You register on their website, take your luggage to a participating hotel, check your luggage in with the receptionist, then pick up at your designated date and time. After pick up, the App will charge your registered payment method, so it is similar to AirBnB for your luggage through participating hotels in your area. 5his service isn't nationwide, so it may not be available in your airport and surrounding vicinities. I hope this assists you in your journey!

No, theres not. After 9/11, all lockers were removed to keep terrorists from leaving explosive devices in them.