Top 10 Tips for American Tourists Taking a Flight

Starting May 7, 2025, every air traveler 18 years of age and older will need a REAL ID-compliant driving license or another acceptable form of ID (such as a passport) to fly within the United States [2]. If your current license does not have the star in the upper right corner, you may be turned away at the security checkpoint. Check your state’s DMV website to schedule an appointment now, as wait times often increase as the deadline approaches.

The Transportation Security Administration (TSA) officially recommends arriving at the airport at least two hours before domestic flights and three hours before international departures. However, real-world data from Cirium shows that on-time performance varies wildly by airline; for instance, Delta often leads with over 83% on-time arrivals, while others may struggle. Arriving early provides a buffer against unexpected traffic, long check-in lines, and the increasingly frequent “unrealistic scheduling” issues currently being targeted by federal regulators [4].

To avoid having your bag pulled aside for a manual search, remember the 3-1-1 rule: liquids, gels, and aerosols must be 3.4 ounces (100ml) or less per container, all fit in one quart-sized clear plastic bag, with one bag allowed per passenger [3].

• Pro Tip: If you can spill, spray, spread, pump, or pour it, it counts as a liquid [2].

• Exceptions: Breast milk, baby formula, and liquid medications are exempt from the 3.4-ounce limit but must be declared to officers for separate screening [2].

More than 20 million travelers now use TSA PreCheck to expedite their security experience. Members do not need to remove shoes, belts, light jackets, or 3-1-1 liquids. At many airports, PreCheck wait times are under 10 minutes compared to 30 minutes for standard lanes. If you frequently travel abroad, Global Entry includes PreCheck and simplifies your return to the U.S. through Customs and Border Protection.

TSA officers recommend packing items in neat layers—shoes in one layer, clothes in another, and electronics in another. This prevents the X-ray image from appearing cluttered, which often triggers a manual bag inspection [3]. Place large electronics like laptops on the top layer so they are easily accessible, as standard screening lanes still require them to be placed in a separate bin [3].

Many U.S. airports have implemented Credential Authentication Technology (CAT-2), which uses a camera to compare your face to your ID. While this speeds up verification, it is voluntary [2]. If you prefer not to have your photo taken, you can request a manual ID check from the officer without losing your place in line.

If you are unsure if a specific item—like a specialized medical tool or a unique souvenir—is allowed, you can text “Travel” to 275-872 (AskTSA) or message @AskTSA on social media. They provide real-time assistance and can clarify rules before you reach the checkpoint [5]. This is particularly helpful when trying to save money on baggage fees, a topic we cover extensively in 10 Pro Tips for Finding the Cheapest Flights.

If you are traveling with a firearm, it must be unloaded, locked in a hard-sided container, and kept in checked baggage only [2]. You must declare it at the airline check-in counter. Bringing a firearm to a security checkpoint, even accidentally, can result in civil penalties of up to $15,000 and the loss of TSA PreCheck eligibility for five years [2].

You do not need to notify an officer about pills, but you must declare medically necessary liquids that exceed 3.4 ounces [5]. These items are subject to additional screening, which may include opening the container. While U.S. federal guidelines do not require medications to be in original prescription bottles, be aware that individual state laws regarding labeling still apply.

For travelers with disabilities, medical conditions, or those who need extra time, the TSA Cares helpline (855-787-2227) allows you to request a Passenger Support Specialist. You should call at least 72 hours before your flight to ensure an officer is available to assist you through the screening process [2]. For more on managing the terminal, see The American Tourist’s Guide to Navigating Airports.

Checkpoint Checklist

• Before the Airport: Verify your ID is REAL ID compliant and pack liquids in a quart-sized bag.
• At Packing: Layer your items and keep electronics accessible.
• At the Gate: Monitor flight status through airline apps to spot “chronically delayed” patterns early [4].

Action Plan

1. Verify ID: Check for the star on your license; if missing, use a passport or apply for a REAL ID.
2. Download Apps: Install your airline’s app and the MyTSA app for real-time delay and wait-time updates.
3. Enroll: If you fly more than twice a year, apply for TSA PreCheck to bypass standard lines.
4. Declare: Always tell the TSA officer if you have medically necessary liquids or a declared firearm in checked bags.

Modern air travel requires a proactive mindset. By staying informed on current TSA protocols and federal passenger protections, American tourists can minimize delays and focus on their destination.