What Is the Allegiant 311 Rule? A Must-Read Guide for Smart Packing
+1-805-209-1812 to know about Allegiant Air 311 rule.

Traveling by air often involves understanding a variety of rules and regulations, especially when it comes to what you can and cannot bring on board. One of the most common guidelines affecting all air travelers in the United States is the 311 rule, which applies to liquids, gels, and aerosols in carry-on luggage. For Allegiant Air passengers, knowing the 311 rule can help ensure a smooth and hassle-free experience at airport security checkpoints.
Let’s explore what the 311 rule is, how it applies to Allegiant Air passengers, and what steps you can take if you have additional questions, including how to contact the Allegiant Air phone number for customer support (+1-805-209-1812).
Understanding the 311 Rule
The 311 rule is a Transportation Security Administration (TSA) guideline designed to enhance security while allowing travelers to carry necessary liquids in their carry-on baggage. The rule is named “311” because it represents the following:
- You can carry liquids, gels, and aerosols in containers of 3.4 ounces (100 milliliters) or less.
- These items must fit in one quart-sized, clear, resealable plastic bag.
- Each passenger is allowed one bag of liquids in their carry-on luggage.
This rule applies to all flights departing from U.S. airports, including those operated by Allegiant Air. It is enforced at TSA security checkpoints and is critical to understand in order to avoid delays or having items confiscated.
Items Covered Under the 311 Rule
The 311 rule covers a wide range of liquid and semi-liquid items, including:
- Shampoo and conditioner
- Toothpaste
- Lotions and moisturizers
- Perfume and cologne
- Liquid makeup such as foundation or mascara
- Hair gels and sprays
- Contact lens solution
- Beverages and soups
Even though these items may seem harmless, TSA categorizes them as potential threats if not stored properly due to security concerns.
Exceptions to the 311 Rule
There are certain exceptions to the 311 rule, even for Allegiant Air passengers:
Medications: Liquid prescription and over-the-counter medications are allowed in reasonable quantities exceeding 3.4 ounces but must be declared at the security checkpoint.
Baby Formula and Breast Milk: These are also permitted in larger quantities, as long as they are presented to TSA officers during screening.
Special Dietary Liquids: Items such as juice or liquid nutrition required for medical needs can exceed the limit, with proper documentation.
While these items are exempt, travelers must inform TSA officers of their presence and may be subject to additional screening.
Allegiant Air’s Carry-On Policy
Allegiant Air follows TSA guidelines, meaning the 311 rule is strictly enforced on all carry-on items. In addition, Allegiant’s carry-on bag policy limits passengers to one personal item for free, such as a purse or small backpack. If you need to bring additional carry-on bags, fees apply and must be arranged ahead of time.
Understanding Allegiant’s specific baggage policies in conjunction with the 311 rule will help you pack appropriately and avoid extra charges or delays.
Tips to Follow the 311 Rule Successfully
- Use Travel-Size Containers: Purchase containers specifically labeled as TSA-compliant (3.4 ounces or less).
- Label and Organize: Store all liquids in one clear plastic bag to present easily at the security checkpoint.
- Check Before You Pack: Some seemingly solid items like peanut butter or creamy makeup are considered liquids by TSA.
- Plan Ahead: If you’re unsure about an item, leave it in your checked baggage or call TSA or Allegiant Air directly.
Need Help? Contact Allegiant Air Phone Number
If you’re unsure about how the 311 rule applies to your travel plans or have specific concerns about packing, you can reach out to customer support. Allegiant Air phone number +1-805-209-1812 representatives are available to answer your questions and guide you on travel regulations, baggage fees, or security rules.
Whether you’re a first-time flyer or a frequent traveler, speaking to a customer service representative can clarify any confusion. The Allegiant Air phone number can be found on the airline’s official website and is typically listed under the “Contact Us” or “Help” section.
Conclusion
Understanding and following the Allegiant 311 rule is essential for a stress-free airport experience. By limiting liquid containers to 3.4 ounces, placing them in one quart-sized bag, and sticking to one bag per passenger, you’ll breeze through TSA security checks without issue.
If you have questions about what you can bring or how Allegiant's specific policies may affect you, don’t hesitate to contact the Allegiant Air phone number. Being informed is the best way to enjoy a smooth and safe journey.




Comments
There are no comments for this story
Be the first to respond and start the conversation.