Washington and Northern Virginia
The US 15 corridor is direct by map, but Beltway, Frederick, event, and weekend traffic can materially change the drive.
US 15, regional airports, downtown parking, and battlefield roads
Gettysburg is a road-first destination. Washington, Baltimore, and Harrisburg are the most natural regional approaches; Philadelphia is farther east. Air or rail arrivals still require a final car, bus, shuttle, taxi, or rideshare connection.
Washington, Baltimore, Harrisburg, Philadelphia, US 15, US 30, regional airports, Amtrak connections, downtown parking, and battlefield roads
Harrisburg offers air and Amtrak connections followed by a separate road transfer; confirm onward transportation in advance. Compare the complete road transfer from Washington, Baltimore, Harrisburg, or Philadelphia rather than mileage alone. The lines are planning corridors, not turn-by-turn directions; use live traffic, construction, weather, park conditions, and event notices before departure.
The US 15 corridor is direct by map, but Beltway, Frederick, event, and weekend traffic can materially change the drive.
A practical regional approach through Maryland and Adams County. Compare the airport rental-car handoff with road traffic and hotel parking.
Harrisburg offers the nearest useful Amtrak station and a regional airport, followed by a separate road transfer to Gettysburg.
A longer Pennsylvania drive that can pair with a broader trip, but Gettysburg should not be treated as a casual urban side trip.
Lincoln Square, Baltimore Street, Steinwehr Avenue, restaurants, shops, and several museums can be walked from a well-placed room.
The preserved landscape is broad. Use a personal car, Licensed Battlefield Guide, bus tour, or current NPS program rather than assuming it is one walking park.

The final miles
Check in or leave luggage before sightseeing when arrival time is uncertain. Park roads close according to current National Park Service hours, special events can alter traffic, and dusk is a poor time to learn the Auto Tour. Save the full landscape for daylight and use Lincoln Square for the arrival evening.
Official resources
Check current hours, access, alerts, policies, service, and weather directly before departure.
Keep exploring
Extend the Adams County weekend with Hershey's family attractions, Philadelphia's historic streets, or New Hope's river towns—each a distinct Pennsylvania chapter beyond the battlefield.