🇺🇸Washington, Pennsylvania

• American Airlines AA (ERJ-145, A319, A320, CRJ, Embraer 175, Embraer 170…) · 14 routes: Boston*, Charlotte, Chicago*, Dallas-Fort Worth, Los Angeles, Miami*, New York*, New York*, Philadelphia, Phoenix, Raleigh-durham*, St. Louis*, Washington*, Windsor Locks*
• US Airways US (A319, A320, CRJ, ERJ-145, Embraer 175, ERJ…) · 14 routes: Boston*, Charlotte, Chicago, Dallas-Fort Worth, Los Angeles, Miami, New York, New York*, Philadelphia, Phoenix, Raleigh-durham*, St. Louis*, Washington*, Windsor Locks*
• Southwest Airlines WN (737-700, 737-300, 73C, 717, 737-800, 737-800…) · 13 routes: Atlanta*, Baltimore, Chicago, Dallas-Fort Worth*, Denver, Fort Lauderdale, Fort Myers, Houston, Las Vegas, Nashville, Orlando, Phoenix, Tampa
• Delta Air Lines DL (A320, ERJ, 757-200, MD-88, CRJ-700, A319…) · 10 routes: Atlanta, Cincinnati, Detroit, Memphis, Minneapolis, New York, New York, Orlando*, Paris, Punta Cana
• United Airlines UA (A320, 737-800, A319, 737-700, Dash 8-400, 737-900…) · 8 routes: Chicago, Denver, Houston, Los Angeles, Newark, San Francisco, Toronto*, Washington*
• AirTran Airways FL (717, 737-700, 737-700, 73C) · 5 routes: Atlanta, Baltimore*, Chicago*, Orlando, Tampa
• Air France AF (717, 757-200, MD-88, CRJ-900) · 2 routes: Atlanta*, Paris*
• Frontier Airlines F9 (A320) · 2 routes: Cancun, Punta Cana
• AeroMéxico AM (A320, MD-88) · 1 route: Atlanta*
• Air Canada AC (Dash 8-100) · 1 route: Toronto*
• Alaska Airlines AS (737-800) · 1 route: Los Angeles*
• Alitalia AZ (MD-88) · 1 route: Atlanta*
• JetBlue Airways B6 (Embraer 190) · 1 route: Boston
• KLM Royal Dutch Airlines KL (MD-88, CRJ-900) · 1 route: Atlanta*

Routes and aircraft from OpenFlights (open data; a point-in-time snapshot). * = codeshare. Linked destinations open their own guidebook. Flight numbers are not in the open data — they come from the airline or a paid schedule feed.