Security Travel Tips


Arrive early for a worry free travel experience at BWI Marshall

The Transportation Security Administration (TSA) currently recommends travelers arrive 2 hours before scheduled Domestic Flights and 3 hours for International Flights. More information and travel tips are available from the TSA at

State of the Art Security at BWI Marshall

Photo of Security Checkpoint

TSA uses millimeter wave Advanced Imaging Technology (AIT) and walk-through metal detectors to screen passengers. Millimeter wave AIT safely screens passengers without physical contact for metallic and non-metallic threats, including weapons and explosives, which may be concealed under clothing. Generally, passengers undergoing screening will have the opportunity to decline AIT screening in favor of physical screening. However, some passengers will be required to undergo AIT screening if their boarding pass indicates that they have been selected for enhanced screening, in accordance with TSA regulations, prior to their arrival at the security checkpoint. This will occur in a very limited number of circumstances. The vast majority of passengers will not be affected. See the responses to frequently asked questions.

Safety: Advanced Imaging Technology is safe and meets national health and safety standards. This technology uses non-ionizing radio-frequency energy in the millimeter spectrum with no known adverse health effects. It does not use X-ray technology.

Privacy: TSA has strict privacy standards when using Advanced Imaging Technology to protect your privacy. Advanced imaging technology uses automated target recognition software that eliminates passenger-specific images and instead auto-detects potential threats by indicating their location on a generic outline of a person. The generic outline is identical for all passengers.

BWI Marshall works in close partnership with the Transportation Security Administration (TSA) to ensure safe travel for all BWI Marshall passengers.

For additional information see: TSA Website

Be prepared for increased wait times during peak travel times








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Know the 1 + 1 Rule for your Carry-On Bags

You are allowed 1 carry-on bag and 1 personal item. Your items must fit below the seat in front of you or in an overhead bin. Your carry-on bag should not exceed 22 x 14 x 9 inches / 23 x 36 x 56 centimeters (including handles and wheels). A personal item must be smaller than your carry-on bag (like a small purse, briefcase or laptop). Diaper bags, child safety seats, and medical or mobility devices do not count as your carry-on or personal item. Please check with your respective airline as they may further restrict allowable size. Musical instruments are also considered a carry-on item and must fit in the overhead bin or under the seat in front of you.

In addition, when traveling with a pet, the kennel or container counts as your carry-on and the carry-on pet fee also applies.

3-1-1 For Carry-Ons

3-1-1 for carry-ons: 3 ounce bottle or less (by volume) - 1 quart-sized, clear, plastic, zip-top bag - 1 bag per passenger placed in screening bin. One-quart bag per person limits the total liquid volume each traveler can bring. 3 oz. container size is a security measure.

Consolidate bottles into one bag and X-ray separately to speed screening. Be prepared. Each time TSA searches a carry-on it slows down the line. Practicing 3-1-1 will ensure a faster and easier checkpoint experience. If in doubt, put your liquids in checked luggage.

Declare larger liquids. Medications, baby formula and food, breast milk, and juice are allowed in reasonable quantities exceeding three ounces and are not required to be in the zip-top bag. Declare these items for inspection at the checkpoint.

Come early and be patient. Heavy travel volumes and the enhanced security process may mean longer lines at security checkpoints. TSA working with our partners. TSA works with airlines and airports to anticipate peak traffic and be ready for the traveling public.

There are many items that are prohibited, some in carry-on and some in carry-on and checked baggage. For details about the new security procedures and timesaving tips visit the TSA Website.