Copa Airlines IAD Terminal operates out of Terminal A at Washington Dulles International Airport (IAD) and offers comprehensive services to travelers flying primarily to Central and South America. Travelers can book tickets online, using the Copa app, by phone, or at manned ticket counters for the airline at Terminal A, where agents assist with reservations and changes. Check-in is available online 24 hours before departure or at airport kiosks and counters, with at least three hours before arrival recommended for international flights. A single carry-on item and one personal item are allowed under Copa's baggage policy, with checked bag provisions by class and destination. Advance arrangements should be made for special items and extra bags. Passengers who need help or have pets can prebook assistance. While Copa does not have a stand-alone lounge at IAD, eligible customers can access United Club lounges through Star Alliance.