Southwest Airlines’ decision to ground its Boeing 737 MAX 8 aircraft is impacting flights across the country. Officials at Pittsburgh International Airport say it will experience service reductions this coming summer. Southwest is trimming its summer flight schedules from June 8 through 29. The Pittsburgh routes impacted by the adjustments included suspended non-stop service to Los Angeles, Cancun, and a reduction in service to Las Vegas. It’s unclear what changes will be made beyond June.