Airports in St. Mary's County, Maryland: Private, Municipal, Regional(All)

Airports Serving St. Mary's County, Maryland

St. Mary's County occupies the southernmost tip of western Maryland's coastal peninsula, where the Potomac River meets the Chesapeake Bay, home to approximately 113,000 residents in communities including Leonardtown, the county seat, Lexington Park, California, and Hollywood. The county's economy is dominated by Naval Air Station Patuxent River, which employs thousands of military personnel, government civilians, and defense contractors, creating substantial air travel demand for both business and personal trips. St. Mary's County's southern Maryland location places it at a considerable distance from major commercial airports, requiring drives of 70 minutes or more to reach BWI, DCA, or Dulles.

Ronald Reagan Washington National Airport (DCA)

Reagan National Airport is one of the two primary commercial airports for St. Mary's County residents, located approximately 65 to 75 miles north via Route 5 North and Route 235 to the Capital Beltway and the George Washington Parkway. The drive takes roughly 80 to 100 minutes under normal traffic conditions, though Capital Beltway congestion can extend travel times significantly during rush hours. DCA offers strong domestic service on American Airlines, Delta, United, Southwest, Alaska Airlines, and JetBlue, with particular strength on high-frequency routes to New York, Boston, Chicago, and Atlanta. For St. Mary's County's large defense contractor and military community, DCA's proximity to the Pentagon, Crystal City, and downtown Washington makes it the preferred airport for government and defense business travel.

Baltimore-Washington International Airport (BWI)

BWI is approximately 70 to 80 miles north of St. Mary's County, reachable in roughly 80 to 100 minutes via Route 4 North through Calvert County to the Baltimore-Washington Parkway. BWI handles over 27 million passengers annually with Southwest Airlines operating more than 200 daily departures as the dominant carrier, offering nonstop service to over 80 destinations at fare levels generally lower than DCA. For St. Mary's County residents prioritizing low fares and broad domestic route selection, BWI provides the best value despite the longer drive compared to some DCA routes. The airport also hosts Delta, United, American, JetBlue, Spirit, Frontier, Alaska Airlines, Icelandair, and British Airways, with long-term parking available at $10 per day in satellite lots.

St. Mary's County Regional Airport and NAS Patuxent River

St. Mary's County Regional Airport is a public general aviation facility located near Leonardtown, featuring a 3,100-foot paved runway that serves private pilots, flight training, and limited charter operations. The airport provides local aviation access for the county and supports air taxi services that connect St. Mary's County to Washington, Baltimore, and other regional destinations. Naval Air Station Patuxent River, the dominant aviation facility in the county, serves as the Navy's principal center for research, development, test, and evaluation of naval aircraft and aviation systems. NAS Pax River's operations include some of the most advanced military aircraft testing in the Department of Defense, and while the base is not available for civilian commercial use, its aviation infrastructure and workforce define St. Mary's County's deep connection to the aerospace industry.

Washington Dulles and International Access

Washington Dulles International Airport completes the airport options for St. Marys County, located approximately 85 to 100 miles northwest with a drive time of 100 to 120 minutes via Route 5 North to the Capital Beltway and the Dulles Access Road. Dulles serves as United Airlines primary East Coast international hub, offering nonstop flights to London, Frankfurt, Munich, Tokyo, Dubai, Delhi, Istanbul, Addis Ababa, and dozens of other global destinations. For St. Marys County defense industry community, which includes contractors working with international allied nations and foreign military sales programs, Dulles provides essential connectivity to partner countries. The airport also hosts low-cost domestic carriers including JetBlue, Spirit, and Frontier that can offer competitive fares on routes where DCA and BWI pricing runs high. Despite the two-hour drive, Dulles remains the indispensable airport for St. Marys County residents and defense workers needing global travel connections.

Frequently Asked Questions About Airports Near St. Mary's County, Maryland

Ground Transportation for St. Mary's County Air Travelers

St. Mary's County's southern Maryland peninsula location means that all commercial airport trips involve at least 80 minutes of driving, making ground transportation planning essential. Route 5 North and Route 235 serve as the primary corridors connecting Lexington Park and Leonardtown to the Capital Beltway and DCA, while Route 4 through Calvert County provides the most direct path to BWI via Prince Frederick and Upper Marlboro. Both routes are predominantly two-lane roads through rural stretches, where farm equipment and school bus stops can slow progress, so travelers should build buffer time into their airport trip planning.

Several private transportation companies serve the St. Mary's County to airport corridor, offering sedan and SUV services for defense contractor and government travelers who need reliable, professional airport transfers. Ride-share services from Lexington Park to DCA or BWI typically cost $80 to $120 each way, which can be competitive with airport parking costs for shorter trips. For extended travel, driving and parking at BWI's $10-per-day satellite lots remains the most economical option. Washington Dulles International Airport (IAD), accessible in approximately 100 to 120 minutes via the Capital Beltway, rounds out St. Mary's County's airport options for international travel, offering United Airlines' extensive global hub network for the county's defense community members traveling to international partners and allies.