| 50%Off | Family Plus Membership For 50% Off | 8-6-26 |
| 30%Off | Port Discovery Children's Museum Tickets Up To 30% Off | 7-6-26 |
| 25%Off | With This 25% Coupon, Saving Just Got Much Easier At Port Discovery | 7-6-26 |
| $10Off | Discover Today's Best Port Discovery Deals And Save Up To $10 | 7-6-26 |
| $5Off | Receive An Up To $5 Discount On Admission | 7-6-26 |
| $20Off | $20.25 Off: The Best Port Discovery Children's Museum Code | 6-6-26 |
| $20Off | Save $20 On Whole Site | 7-6-26 |
| 50%Off | Save Up To 50% On Birthday Parties At Port Discovery | 15-6-26 |
| $80Off | Scout Adventures Priced As Low As $80 | 7-6-26 |
| $20Off | Starting From $20 – Get Summer Field Trips At Port Discovery | 7-6-26 |
| $20Off | Low Prices On Summer Field Trips – From $20 | 10-6-26 |
| $20Off | Summer Field Trips Now From $20 At Port Discovery | 8-6-26 |
| $20Off | Find Top Summer Field Trips Deals From $20 At Port Discovery | 11-6-26 |
| $20Off | From $20 – Browse Summer Field Trips At Port Discovery | 14-6-26 |
| $20Off | Summer Field Trips From $20 | 13-6-26 |
| $10Off | From $10 – Browse Indoor Play And Family Fun At Port Discovery | 8-6-26 |
| $10Off | Indoor Play And Family Fun As Low As $10 At Port Discovery | 5-6-26 |
| $10Off | Enjoy Indoor Play And Family Fun From $10 | 10-6-26 |
| $10Off | Great Deals On Indoor Play And Family Fun From $10 | 11-6-26 |
| $7Off | Homeschool Days From $7.5 | Port Discovery | 6-6-26 |
| $7Off | Find Homeschool Days From Just $7.5 | 6-6-26 |
| $7Off | Homeschool Days From $7.5 | 12-6-26 |
| $7Off | Homeschool Days Available From $7.5 | 15-6-26 |
| $7Off | Homeschool Days Starting At $7.5 | 12-6-26 |
| $7Off | Discover Homeschool Days From $7.5 | 10-6-26 |
| $5Off | Indoor Play And Family Fun Priced As Low As $5 | 10-6-26 |
| $5Off | Indoor Play And Family Fun Available Starting At $5 | 11-6-26 |
| $5Off | Best Value: Indoor Play And Family Fun From Just $5 | 13-6-26 |
| $5Off | Indoor Play And Family Fun From $5 | Port Discovery | 14-6-26 |
| $5Off | Calendar And Special Events At Unbeatable Prices – From $5 | 15-6-26 |
| $2Off | Family Memberships From $2 | Port Discovery | 15-6-26 |
| $1Off | All Memberships Purchased Online Are Subject To A $1.50 Processing Fee | 6-6-26 |
| 50%Off | 50% Discount General Admission To Maryland Zoo In August And September Up To 4 Passes | 7-6-26 |
| 10%Off | 10% Discount The Base Package Price For Parties | 8-6-26 |
| $35Off | Visit The Museum To Save Extra With A $35 Discount In-Person | 9-7-26 |
| $25Off | Plan For Play: $25 Off Memberships | 9-7-26 |
| $15Off | $15 Parking Discount Through Port Discovery Partner The Harbor Park Garage | 9-7-26 |
| $5Off | Active Military Families May Receive A $5.00 Discount For Memberships Purchased At The Box Office Military Photo Id Required | 6-6-26 |
| $2Off | $2 Off Storewide At Port Discovery With Code | 5-6-26 |
| $3Off | Visit Port Discovery For $3 Per Person | 5-6-26 |
| $199Off | 4 For $199 Now: Family Membership For | 7-6-26 |
| $500Off | $500 For Contributing Family Membership | 7-6-26 |
| $5Off | Discovery Quest Block Party $5 Tickets | 18-6-26 |
| $15Off | Enjoy $15 Parking When Parking At Port Discovery Partner Garage | 14-6-26 |
| $5Off | $5 First Friday Fun Night | 9-7-26 |
| $10Off | Harbor Park Garage Is Discounted To $10 Pre Sale Is Available Online In Advance | 4-7-26 |
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