Security Information


ID Requirements Are Changing for Domestic Flights

Fly often? Find out more about applying for a REAL ID Driver License or ID card.

Starting May 7, 2025, you will need a REAL ID, passport, or other TSA approved document to board a domestic flight. The California Department of Motor Vehicles is now offering REAL ID driver licenses and ID cards. NOTE: All valid California driver licenses or ID cards can be used to board a domestic flight until May 7, 2025.

For a list of acceptable federal IDs, visit

3-1-1 Liquids Rule

Carry-On Bag

3.4 ounces (100 ml) or smaller containers that fit in a one quart-sized, resealable bag may go in carry-on and through checkpoint security.

Bottles of 3.4 ounce sized containers to depict size allowed in carry-on bags.

Checked Bag

Containers that are larger than 3.4 ounces (100ml) regardless of amount inside, must be in checked baggage.

Suitcase and Bottles larger than 3.4 ounce containers to depict what must be checked in baggage.

What’s Allowed

You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes in your carry-on bag and through the checkpoint. These are limited to travel-sized containers that are 3.4 ounces (100 milliliters) or less per item. Placing these items in the small bag and separating from your carry-on baggage facilitates the screening process. Pack items that are in containers larger than 3.4 ounces or 100 milliliters in checked baggage.

Any liquid, aerosol, gel, cream or paste that alarms during screening will require additional screening.

TSA 3-1-1 Liquids Rules

Watch or listen to the following TSA video on the 3-1-1 liquids rules:

Disabilities & Medical Conditions / Passenger Support

To ensure your security, all travelers are required to undergo screening at the checkpoint. You or your traveling companion may consult the TSA officer about the best way to relieve any concerns during the screening process. If you wish to inform the TSA officer of your disability or medical condition discreetly, please provide the officer with the TSA notification card or other medical documentation to describe your condition.

Travelers requiring special accommodations or concerned about the security screening process at the airport should speak with a TSA officer at the time of screening.

Watch or listen to the following TSA video on Passenger Support Specialists and how they assist travelers:

If you have other questions or concerns about traveling with a disability please contact TSA Cares 72 hours prior to traveling at (855) 787-2227. TSA Cares provides travelers with disabilities, medical conditions, and other special circumstances additional assistance during the security screening process. TSA Cares can answer questions about screening policies, procedures, and what to expect at the security checkpoint.

For additional information please visit:

Other Security Information & TSA Tips

Contact the Transportation Security Administration (TSA) for the latest security information. Check here for acceptable identification required for Airport Checkpoints.

Traveling with Food or Gifts:

TSA offers tips on traveling with food or gifts.

Items to Declare to Security

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.

Traveling with Wine

Wine is a liquid! Wine cannot be taken on board in carry-on baggage.  It must be checked, instead.

Arrive Early

Come early and be patient. Heavy travel volumes and the enhanced security process may mean longer lines at security checkpoints.

TSA Precheck is not currently offered at STS.

Unlock Your Luggage

Remember: Passengers are asked not to lock their luggage for faster screening. Cable or zip ties or other easily cut or opened ties are recommended for securing luggage.

Security screens every passenger’s baggage before it is placed on an airplane. While technology allows security officers to electronically screen bags, there are times when they need to physically inspect a piece of luggage. TSA has worked with several companies to develop locks that can be opened by security officers using universal “master” keys so that the locks may not have to be cut. These locks are available at airports and travel stores nationwide. The packaging on the locks indicates whether they can be opened by security officers. Visit TSA’s website for more information about security locks.

Other Information

TSA works with airlines and airports to anticipate peak traffic and be ready for the traveling public.

Security screening at the Charles M. Schulz – Sonoma County Airport is handled by the Trinity Technology Group. TSA contracts with and monitors Trinity’s operations. Trinity follows regulations and procedures required by TSA.

Passengers with questions regarding screened bags can call (888) 431-2685 or visit where they can file claims or complaints for their lost items.

TSA List of Prohibited Items