BWI Long Term Parking How Many Days: 2026 Cost Guide

BWI Long Term Parking is an on-airport self-park option at Baltimore/Washington International Thurgood Marshall Airport, priced at $11 per day (checked October 2026), with no published maximum stay limit for standard trips. If you're asking bwi long term parking how many days you can leave your car, the answer is: there is no strict daily cap enforced for most travelers, but after roughly 30 days you should contact the BWI official parking office directly. For any trip length, the airport lots Triply sells near BWI run about $6 to $8 per day, roughly 24% to 44% less per day than the on-airport rate. Triply rates are for a 7-day stay booked ahead and change by date.

• Official rate: BWI Long Term Lots charge $11/day, the lowest on-airport rate at BWI, per the Maryland Aviation Administration.
• No strict day cap: Most travelers park for 1–30 days without issue; longer stays require direct coordination with airport parking staff.
• 14-day total cost: $154 at Long Term Lots vs. about $86 at Doubletree Baltimore, a savings of about $68.
• Free shuttle service runs every 10–15 minutes between Long Term Lots and the terminal (every 25 minutes between 1–5 AM).
• ~22,000 spaces across all on-airport facilities; advance reservations are not required for the airport's own lots, but they can fill up during peak travel periods.
• Off-site lots on Triply (Doubletree Baltimore, Country Inn & Suites, The Westin, Sheraton Hotel and Clarion Hotel BWI North) run about $6 to $8/day, cheaper per day than Long Term at any trip length.

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How Much Does BWI Long Term Parking Cost Per Day?

BWI Long Term Lots cost $11 per day as of rates effective July 1, 2024 — the first rate increase since 2009, per the Maryland Aviation Administration (MAA). That makes it the most affordable on-airport option at BWI Marshall Airport, sitting below Express Parking ($14/day), the BWI Rail Station Garage ($12/day), the Daily Garage ($16/day), and the Hourly Garage ($30/day max).

The $11/day rate applies to both Long Term Lot A and Long Term Lot B. There is no weekly rate or multi-day discount — the rate simply accumulates at $11 per calendar day. For a quick comparison of all BWI parking tiers, see our full Baltimore Washington Airport Parking Rates 2026 guide.

Ready to compare BWI long term parking against off-site alternatives before you book? Search BWI parking from about $6/day on Triply and lock in your spot now.

How Many Days Can You Leave Your Car in BWI Long Term Parking?

There is no published hard limit on how many days you can leave a vehicle in BWI Long Term Parking for a standard trip. Most travelers park for anywhere from 1 to 30 days without any issue. The lots are designed for extended-stay travel — business trips, vacations, and international journeys are all common use cases.

For stays beyond 30 days, the BWI parking authority recommends contacting the airport directly. Extended or indefinite parking (beyond typical travel durations) may trigger a review or require special arrangements. Abandoned vehicles are subject to towing under Maryland law, regardless of fees paid.

The key practical answer: bwi long term parking how many days is a function of your budget more than a hard policy ceiling. At $11/day, a 30-day stay costs $330. At that point, an off-site lot (about $185 for 30 days at the Doubletree Baltimore rate) or monthly storage facilities often make more financial sense.

BWI Long Term Parking Cost by Number of Days (1–14 Day Breakdown)

No competitor publishes this table. Here is the full cost breakdown for BWI Long Term Parking at $11/day, compared against Doubletree Baltimore, the lowest-priced airport lot Triply sells at BWI, at about $6/day. The Doubletree column is an estimate (the daily rate times the number of days), so very short or very long stays may price slightly differently.

Based on our analysis, Doubletree Baltimore saves you about 44% per day versus Long Term, whatever the trip length. On a 14-day trip, that's about $68 back in your pocket. On a 30-day trip, you save about $145. Even Sheraton Hotel and Clarion Hotel BWI North, the priciest of the five Triply lots at about $8/day, run about 31% and 24% below BWI's own Long Term Lots.

The savings grow with every day parked. On a 1 to 3 day trip the gap is about $5 to $15, so the convenience of staying on-airport may outweigh it for some travelers. By 5 days the gap is about $24, and by a week it is about $34, so the math favors an off-site lot. Check shuttle hours against your flight time before you choose.

How Does the BWI Long Term Parking Shuttle Work?

The BWI Long Term Parking shuttle is a free service that connects Long Term Lot A and Long Term Lot B directly to the main terminal. Per official BWI airport data, the shuttle runs every 10–15 minutes during normal hours. Between 1 AM and 5 AM, frequency drops to approximately every 25 minutes.

Look for clearly marked shuttle stops inside the lots — signs direct you to the pickup areas. The ride to the terminal is short, typically under 10 minutes depending on traffic and time of day. Budget an extra 15–20 minutes for the shuttle when calculating your arrival time at BWI.

For early morning or late night flights, plan around the reduced 25-minute frequency. If your flight departs before 6 AM, arrive at the lot early enough to account for potential wait time. For more detail on the shuttle system, our BWI Long Term Parking Bus guide covers timing, stop locations, and tips for never missing your ride.

Long Term Lot A vs. Lot B: What's the Difference?

Both Long Term Lot A and Long Term Lot B charge the same rate of $11/day and offer the same free shuttle service to the terminal. The primary differences are location and layout. Both lots are accessed via MD Route 170 (Aviation Boulevard) off Interstate 195, the primary airport access road.

In practice, most travelers will find one lot full during peak periods and be directed to the other. BWI's on-airport facilities span roughly 22,000 total spaces across all facilities. Both Long Term lots are included in that count. During summer travel season, holiday weekends (Thanksgiving, July 4th), and spring break, both lots can fill up, so arriving early or booking an off-site lot ahead is smart.

Neither lot currently offers covered parking. Both are open-air, self-park facilities. None of the lots Triply sells near BWI lists covered parking either, so if covered parking matters to you, particularly for longer trips where weather exposure is a factor, the airport's Daily Garage ($16/day) is covered.

Is BWI Long Term Parking Cheaper Than Off-Airport Alternatives?

No. Every airport lot Triply sells near BWI costs less per day than the on-airport Long Term Lots, for trips of any length. Here's how the rates compare side by side:

Shuttle service differs by lot. Doubletree Baltimore runs every 15 minutes from 5 AM to midnight, close to the on-airport Long Term shuttle, and every 30 minutes overnight. The Westin and Sheraton Hotel run every 30 minutes around the clock, with pickups on demand: call the hotel once you have your luggage. Country Inn & Suites and Clarion Hotel BWI North have gaps in service, so match your flight time to their hours.

For current promotions, our BWI Long Term Parking Coupon guide is a good place to look. Also check our Airport Parking Near BWI roundup for a full map of nearby options.

How Do You Pay for BWI Long Term Parking?

BWI Long Term Lots accept multiple payment methods at the exit lanes. Per official airport data, accepted forms of payment include cash, Visa, Mastercard, American Express, Discover, and contactless payment. You can also pay online in advance if you book through a third-party platform.

The standard process is pay-on-exit: you take a ticket when you enter, then pay at the exit kiosk when you return. Keep your ticket safe — a lost ticket may result in being charged the maximum daily rate for each day parked. For a detailed walkthrough of the payment process and online pre-pay options, see our BWI Long Term Parking Pay Online guide.

Advance reservations are not required for BWI's on-airport Long Term Lots. They operate on a first-come, first-served basis. However, during peak travel periods, lots can fill up. Booking a lot through Triply in advance holds your space, with free cancellation with a full refund up to 24 hours before check-in.

Tips for Saving Money on Extended BWI Airport Parking

Whether you're parking for 5 days or 21 days, these strategies will reduce your total cost at BWI Marshall Airport.

• Book an off-site lot in advance: Doubletree Baltimore is about $6/day, Country Inn & Suites and The Westin about $7/day, and Sheraton Hotel and Clarion Hotel BWI North about $8/day. All come with free cancellation with a full refund up to 24 hours before check-in. A 7-day trip at Doubletree Baltimore is about $43, versus $77 at on-airport Long Term.
• Match the shuttle to your flight: Doubletree Baltimore, The Westin and Sheraton Hotel run 24 hours. Country Inn & Suites has no shuttle noon to 4 PM or midnight to 4:30 AM, and Clarion Hotel BWI North has none 10 AM to 5 PM or 11 PM to 4 AM.
• Think about covered parking for long trips: none of the lots Triply sells near BWI lists it, while the airport's Daily Garage ($16/day) is covered. Sun, rain, and bird damage are real concerns over 10–14 days.
• Arrive early during peak seasons: Summer, Thanksgiving, and July 4th are peak periods at BWI. Both Long Term Lots can fill up. Book ahead or arrive with a backup plan.
• You don't need a room: The Westin and Sheraton Hotel say no hotel stay is required to park, and guests parking at Doubletree Baltimore can use the hotel's Wi-Fi, restrooms and waiting lounge.
• Plan your security time: The BWI Long Term shuttle adds 15–20 minutes to your airport arrival. TSA PreCheck enrollment can offset that time at the security checkpoint.
• Check traffic before you leave: I-195 and MD Route 170 can back up during rush hour. Check real-time traffic on Waze before heading out so you don't miss your shuttle window.
• Consider the new A/B Connector: BWI's $520 million Concourse A/B Connector opened January 9, 2026, the largest capital project in BWI history. Terminal navigation is faster now, which slightly reduces the buffer time you need after the shuttle.

Understanding bwi long term parking how many days makes sense financially is the key to choosing the right option. For trips of 1–3 days, the on-airport Long Term Lots at $11/day are convenient and reasonable. Off-site lots are cheaper from day one, though: with Doubletree Baltimore you save about $24 on 5 days, about $34 on a week, and up to about $145 on 30 days.

Ready to find the best BWI parking rate for your specific trip length? Compare BWI off-site parking lots from about $6/day on Triply and reserve your spot before you fly.

Compare BWI parking rates. The airport lots Triply sells near Baltimore/Washington International cost about 24% to 44% less per day than the $11 Long Term lot, and about 48% to 62% less than the $16 Daily Garage.