IAD Airport to Lexington Park MD: Routes, Times & Tips

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The drive from IAD airport to Lexington Park, MD is roughly 93 miles southeast of Washington Dulles International Airport, taking 1.5 to 2.5 hours depending on traffic. Most travelers follow US-50 East to MD-4 South to MD-235 South — a straightforward route that avoids the worst of D.C. congestion. Lexington Park sits in St. Mary's County, adjacent to NAS Patuxent River, making it a frequent destination for military personnel and defense contractors flying into IAD.

• Distance: About 93 miles from IAD to Lexington Park, MD by road (72 miles as the crow flies)
• Drive time: 1.5 hours off-peak; up to 2.5 hours during D.C. rush hour
• Best route: US-50 East → MD-4 South → MD-235 South into Lexington Park
• Rideshare estimate: Typically $90–$130 via Uber or Lyft from IAD
• IAD parking: From $5.99/day at off-site lots — pre-book to lock in your rate
• Closest airport to Lexington Park: IAD is actually farther than DCA or BWI by distance, but often preferred for international arrivals

Before you hit the road, lock in your parking at IAD. Off-site lots near Dulles start at $5.99/day with free shuttles to the terminal — up to 62% cheaper than the on-airport Terminal Lot at $32/day. Compare IAD parking rates starting at $5.99/day on Triply and save before your trip.

How Far Is IAD Airport from Lexington Park, MD?

IAD to Lexington Park, MD is approximately 93 miles by road and about 72 miles as a straight-line flight distance. Washington Dulles International Airport sits in Loudoun County, Virginia — on the western edge of the D.C. metro area. Lexington Park is in St. Mary's County, Maryland, on the western shore of the Chesapeake Bay region.

The route takes you east through Northern Virginia, across the D.C. area via US-50 (Lee Jackson Memorial Highway), and south down the Maryland peninsula. You'll pass through or near Bowie, Upper Marlboro, Prince Frederick, and Solomons before reaching Lexington Park. Most of the drive is on major state highways — no mountain passes or tricky navigation.

How Long Does It Take to Drive from IAD to Lexington Park, MD?

Under light traffic, the drive from IAD to Lexington Park takes about 1 hour 30 minutes to 1 hour 45 minutes. During peak commute hours — especially weekday mornings and evenings around the D.C. Beltway and Route 50 corridor — that time can stretch to 2.5 hours or more.

Here's a realistic breakdown by time of day:

• Early morning (5–7 AM): ~1 hr 30 min — best window for the drive
• Mid-morning (9–11 AM): ~1 hr 45 min — manageable after rush hour clears
• Midday (11 AM–2 PM): ~1 hr 40 min — fairly light on the US-50 corridor
• Afternoon rush (3–7 PM): ~2 to 2.5 hours — avoid if possible; I-495 and Route 50 near Bowie are bottlenecks
• Evening (7 PM onward): ~1 hr 45 min — traffic usually clears by 7:30 PM
• Weekends: Generally 1 hr 30–45 min; beach traffic on MD-4 can add 20–30 min on summer Fridays

Always check real-time traffic on Waze before leaving IAD. The D.C. area is one of the most congested in the country, and conditions change fast — especially around the I-495/US-50 interchange in Prince George's County.

What Is the Best Route to Drive from IAD to Lexington Park, MD?

The most direct and reliable route from IAD to Lexington Park follows US-50 East → MD-4 South → MD-235 South. This avoids the D.C. city core entirely and keeps you on major divided highways most of the way.

Here's the step-by-step driving route:

1. Exit IAD via the Dulles Access Road heading east (free, no tolls)
2. Merge onto VA-267 East (Dulles Toll Road) — tolls apply here
3. Continue onto US-50 East through Fairfax, Chantilly, and into Prince George's County, MD
4. Stay on US-50 East past Bowie toward Annapolis — or take MD-4 South at Upper Marlboro/Bowie to head south
5. Follow MD-4 South through Prince Frederick and Solomons
6. Turn onto MD-235 South into Lexington Park — this road runs directly into town and past the NAS Patuxent River main gate

Toll costs: Expect to pay tolls on the Dulles Toll Road (VA-267) portion of the drive — typically $3–$5 depending on your exit. The Dulles Access Road itself is free for airport users. The MD-4 and MD-235 corridors are toll-free. If you have an E-ZPass, tolls are discounted. If not, bring cash or use the pay-by-plate option on VA-267.

Alternative route during heavy traffic: Some drivers use I-66 East to I-495 South (Capital Beltway), then pick up MD-4 South. This adds mileage but can bypass US-50 slowdowns near Bowie. Check Waze before committing — the Beltway has its own congestion patterns.

How Much Does It Cost to Get from IAD to Lexington Park, MD?

The cost of getting from IAD to Lexington Park varies significantly by transportation mode. Here's a realistic comparison based on current data:

Driving your own car is usually the most economical choice, especially for trips of 3 or more days. At $5.99/day for off-site IAD parking, a week-long trip costs under $42 in parking — far less than a round-trip Uber at $90–$130 each way. For long-term parking tips, see our guide to Dulles airport long-term parking rates and best lots.

Gas cost estimate: At 93 miles each way, a typical sedan getting 30 mpg uses about 3.1 gallons per leg. At current fuel prices around $3.20–$3.60/gallon, expect to spend roughly $10–$12 in gas each way.

What Are My Transportation Options from IAD to Lexington Park, MD?

There is no direct public transit from IAD to Lexington Park, MD. The town is rural and not served by commuter rail or intercity bus routes that connect to IAD. Here are your realistic options:

Rental Car from IAD

Renting a car at IAD is one of the most practical options for travelers heading to Lexington Park. The IAD rental car center is connected to the terminal and serves all major agencies. Book in advance for the best daily rates. Note that one-way drop-off fees near Lexington Park can add cost — confirm with your agency before booking.

Rideshare (Uber or Lyft)

Uber and Lyft both operate at IAD with designated pickup zones. Expect to pay $90–$130 for a standard UberX from IAD to Lexington Park. Surge pricing during peak evening hours or after large flight arrivals can push that higher. Rideshare works best for one-time trips when you don't want to deal with parking or rental logistics.

Washington Flyer Taxi

The Washington Flyer taxi service operates exclusively from IAD. Fares are metered. A trip to Lexington Park — approximately 93 miles — will typically cost $120–$160 or more. This is generally the most expensive option but offers a no-app, no-surge experience.

Private Car or Driving Your Own Vehicle

For most Lexington Park–area travelers, driving your own car and parking at IAD is the cheapest long-term solution. Off-site lots near Dulles start at $5.99/day with free shuttle service to the terminal. This gives you flexibility on your schedule and avoids the unpredictability of rideshare pricing.

Note on Bus Service

There is no Megabus or intercity bus route connecting IAD directly to Lexington Park, MD. Some search results confuse Lexington Park, MD with Lexington, VA — a completely different destination. No scheduled bus service runs the IAD-to-Lexington Park route as of April 2026.

Which Airport Is Closest to Lexington Park, MD — IAD, DCA, or BWI?

By driving distance, DCA (Reagan National Airport) is typically the closest airport to Lexington Park, MD, followed by BWI, then IAD. Here's a quick comparison:

• DCA (Reagan National): ~70–75 miles from Lexington Park; approximately 1 hr 15 min under light traffic
• BWI (Baltimore/Washington International): ~80–85 miles from Lexington Park; approximately 1 hr 25 min under light traffic
• IAD (Washington Dulles): ~93 miles from Lexington Park; approximately 1 hr 30–45 min under light traffic

So why do many Lexington Park travelers still use IAD? Three reasons. First, IAD is the Washington region's primary international gateway — if your flight originates overseas, you're almost certainly landing at Dulles. Second, IAD has a wider domestic network than DCA for connecting flights. Third, parking at IAD is significantly cheaper than parking at DCA, where off-site options are more limited.

If you're flying domestically and have a choice, DCA edges out IAD on sheer drive time to Lexington Park. But factor in parking costs, airline selection, and flight prices before deciding. For a full parking cost breakdown across all options, our Dulles airport parking rates comparison covers every lot and price tier.

Where Should You Park at IAD If You're Heading to Lexington Park, MD?

If you're driving your own car to IAD and then heading to Lexington Park, choosing the right parking option saves you real money — especially on multi-day trips. IAD offers ~21,500 parking spaces across on-airport and off-site facilities (verified by MWAA).

On-Airport Parking Options

• Economy Lot: $15/day — cheapest on-airport option; free 24/7 shuttle from Curb 2F to the terminal
• Garage 1 & 2: $21/day — covered, connected to terminal via underground walkway with moving sidewalks
• Terminal Lot: $32/day — closest self-park; underground pedestrian walkway directly to terminal
• Valet Parking: $39/day — most convenient; drop off at the terminal door

Off-Site Hotel Parking (Best Value for Lexington Park Travelers)

Off-site hotel lots near IAD offer the best rates — starting at just $5.99/day — with free shuttle service to the terminal. This is where travelers heading to Lexington Park save the most, especially on trips of 3 days or longer.

For travelers with very early or very late flights, the Hyatt Regency Dulles and Crowne Plaza are best — both offer 24/7 shuttle coverage. If your flight departs after 6 AM and you're back by 11 PM, any of the above lots work well. Pre-book your spot through Triply to compare IAD off-site parking rates and secure your space before arrival.

Military travelers heading to NAS Patuxent River should also consider whether a park-and-fly hotel package makes sense. Staying near IAD the night before a morning flight, then driving to Lexington Park on return, can streamline your whole trip. Our Dulles airport parking hotel guide covers the best park, sleep, and fly deals near IAD in detail.

Tips for Driving from IAD to Lexington Park During Rush Hour

The D.C. metro area has some of the worst traffic in the United States. If your flight lands during peak hours, a few smart moves can save you 30–45 minutes on the drive to Lexington Park.

• Leave before 3 PM or after 7 PM on weekdays to avoid the worst of rush hour on US-50 and I-495
• Use Waze or Google Maps in real time — conditions shift fast, and these apps reroute you around accidents on Route 50 and the Beltway
• Consider waiting at IAD if you land during peak hours (3–6 PM). Grab a meal in the terminal, let traffic thin, then drive. The Capital One Lounge is opening soon in the Main Terminal — a comfortable option if you have access
• Avoid summer Fridays on MD-4 — beach-bound traffic from the D.C. area floods MD-4 South toward Calvert County and can add 20–40 minutes to your Lexington Park leg
• Check for incidents on US-50 near Bowie — this stretch is a consistent bottleneck, especially between MD-193 and MD-450
• Fill up on gas near IAD or in the Fairfax/Chantilly area — gas prices tend to be lower in Northern Virginia than along the MD-4 corridor closer to Lexington Park
• TSA PreCheck saves time at IAD before your return flight — enroll at TSA PreCheck to get through security faster and leave IAD on schedule

Travelers heading to NAS Patuxent River specifically: the main gate off MD-235 can have its own queue during morning hours. Factor in gate access time if you're arriving for an early appointment on base.

Plan Your IAD Parking Before the Drive to Lexington Park, MD

The trip from IAD airport to Lexington Park, MD covers roughly 93 miles and takes 1.5 to 2.5 hours depending on traffic. US-50 East to MD-4 South to MD-235 South is the standard route — direct, mostly highway, and easy to navigate. For most travelers, driving your own car and parking at IAD makes far more financial sense than rideshare at $90–$130 each way.

IAD off-site parking starts at $5.99/day — that's a potential saving of over $180 on a week-long trip compared to the Terminal Lot at $32/day. Pre-booking guarantees your spot and locks in the lowest rate. Find and reserve your IAD parking spot on Triply — rates from $5.99/day and free cancellation on most lots.

Complete IAD Airport Parking Guide