Keeping you safe and secure, in the air and on the ground.

Here’s everything you need to know about TSA, Airport Security and U.S. Customs.


For the latest traveler info from the U.S. government, please visit Note that travel information is always subject to change, so check with TSA before every flight.

Liquid Rules:
Every traveler is allowed to bring one small bag of liquids, aerosols, gels, creams and pastes through the checkpoint. These are limited to 3.4 ounces or less per container. Consolidating these containers in the small bag enables TSA officers to screen them quickly.

3-1-1 for carry-ons. Liquids, gels, aerosols, creams and pastes must be 3.4 ounces (100ml) or less per container; must be in 1 quart-sized, clear, plastic, zip-top bag; 1 bag per passenger placed in screening bin. The bag limits the total liquid volume each traveler can bring.

Be prepared. Each time a TSA officer stops to physically screen a carry-on bag, it slows down the line. Practicing the 3-1-1 rule will facilitate the checkpoint experience.

Declare larger liquids. Medications, baby formula/food and breast milk are allowed in reasonable quantities exceeding three ounces, and they don’t have to be in the zip-top bag. Declare these items for inspection at the checkpoint. TSA officers may need to open them for additional screening.

If in doubt, put your liquids, gels, aerosols, creams and pastes in checked baggage.

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Acceptable Forms of ID:
Acceptable IDs for screening purposes include:

  • U.S. passport
  • U.S. passport card
  • DHS trusted traveler cards (Global Entry, NEXUS, SENTRI, FAST)
  • U.S. military ID (active duty or retired military and their dependents, and DoD civilians)
  • Permanent resident card
  • Border crossing card
  • DHS-designated enhanced driver’s license
  • Driver’s licenses or other state photo identity cards issued by Department of Motor Vehicles (or equivalent) for the sole purpose of identification
  • Federally recognized, tribal-issued photo ID
  • HSPD-12 PIV card
  • Airline or airport-issued ID (if issued under a TSA-approved security plan)
  • Foreign government-issued passport
  • Canadian provincial driver’s license or Indian and Northern Affairs Canada card
  • Transportation Worker Identification Credential
  • Note: a weapon permit is not an acceptable form of identification

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DLH now offers TSA Pre✓™

The  TSA Pre✓™ is an expedited screening program that allows travelers to leave on their shoes, light outerwear and belt, keep their laptop in its case and their 3-1-1 compliant liquids/gels bag in a carry-on, in select screening lanes.

The TSA Pre✓™ application process allows U.S. citizens and lawful permanent residents to go through a pre-enrollment process online at and visit an application center to provide biographic information (e.g. name, date of birth, address, etc.), fingerprints, payment and valid required identity and citizenship/immigration documentation. This program requires an application fee of $85 for a five-year membership.

Once approved, travelers will receive a Known Traveler Number and will have the opportunity to utilize TSA Pre✓™ lanes at security checkpoints at more than 150 participating airports and on 12 airlines. At DLH, a TSA Pre✓™ lane is available at the main TSA screening checkpoint.

The application center for the Duluth area is at 1419 Tower Ave., Superior, WI.

For hours of operation and to schedule an appointment, please follow this link:

Airport Security

Security is onsite 24 hours a day, 7 days a week. If you need to report an incident or request help, please call (218) 391-5631.

The security office is located on the second floor of the terminal, Office 213, next to TSA screening entrance.

U.S. Customs

As an international airport, we have in-house U.S. Customs as needed. And as America’s Most Intuitive Airport, getting in and out of Customs at DLH is a streamlined affair.

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