Commercial Fixed Wing
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 10
Distraction; Situational Awareness; Workload
ATC Issue All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued New Clearance; Air Traffic Control Provided Assistance; Flight Crew Returned To Clearance
Airport; Environment - Non Weather Related; Human Factors
Aircraft X was on an approach to Runway XX. ZZZ [Approach] changed Aircraft X to an approach to Runway XXL to help a help another aircraft turn ahead of them for a [Runway] XY approach. Aircraft X turned out the West. I saw the aircraft turning out to the West and fly through the final for Runway XXL and Runway XXR outside of my airspace. Aircraft X then turned back East toward the airport. I was launching airplanes and trying to be an extra set of eyes for LCE [Local Control East] who was very busy at the time being combined with [XYZ position]. Aircraft X then checked on to my frequency for Runway XXL and I cleared them to land Runway XXL. They appeared to still be SE toward Runway XXL. As I noticed they may be lined up for the incorrect runway ZZZ Approach called and asked me check as well. I informed the pilot they were lined up for the wrong runway and they chose to go around on about a 3 mile final.Some of my focus was on aiding the traffic for LCE. If we had more staffing we could have had a [XYZ] Controller aiding with that.
Tower Controller reported an aircraft lined up for the wrong runway during approach.