http://www.preflightparking.com/Coupon.aspx?LocCD=BWI

PreFlight Airport Parking (BWI)
1200 Stoney Run RD, District 5, Maryland, 21076-1442
(410) 694-9777

Deal via citysquares.com. Please refer to https://citysquares.com/b/preflight-airport-parking-bwi-3824590