Travelers flying with Frontier Airlines often appreciate the airline’s affordability, simple fare structure, and flexibility. However, understanding the Frontier Airlines Baggage Policy is extremely important—especially when it comes to prohibited items. Whether you are packing a carry-on, checked bag, or personal item, knowing what you cannot bring onboard ensures a smooth airport screening experience and avoids unexpected delays or fees.

In this comprehensive guide from My Flight Policy, we break down everything you need to know about prohibited items, special restrictions, the logic behind airline safety rules, and how these rules apply across Frontier Airlines baggage allowance, Frontier Airlines checked baggage rules, Frontier Airlines carry-on policy, Frontier Airlines baggage fees, and the overall Frontier Airlines luggage policy.

If you ever need travel help, guidance, or urgent support, you can reach My Flight Policy at +1-877-271-4004.

Quick Overview: Frontier Airlines Baggage Policy

Before diving into the list of prohibited items, here is a quick snapshot of what the Frontier Airlines Baggage Policy covers:

• Personal Item: Always free; must fit under the seat.

• Carry-On Bag: Size and weight limits strictly enforced; fees apply.

• Checked Bags: Weight limits (usually 40 lbs) and size restrictions apply.

• Special Items: May require additional documentation or packaging.

• Prohibited Items: Certain materials, chemicals, weapons, and hazardous objects are banned from all flights.

Understanding the basics makes it easier to categorize what is allowed and what falls under restricted or prohibited items.

Understanding the Frontier Airlines Baggage Policy

The Frontier Airlines Baggage Policy outlines rules for what passengers can bring on board, how much they can carry, and which items are banned due to safety reasons. These restrictions are informed by FAA, TSA, and federal air safety standards.

In addition to size and weight guidelines, the policy includes rules tied to:

• Frontier Airlines baggage allowance

• Frontier Airlines checked baggage rules

• Frontier Airlines carry-on policy

• Frontier Airlines luggage policy

• Frontier Airlines baggage fees

Frontier aims to ensure safe operations, protect passengers and crew, and reduce risks associated with hazardous materials.

What Items Are Prohibited Under the Frontier Airlines Baggage Policy?

Some items are banned from carry-on bags, others from checked luggage, and some are prohibited entirely. Frontier Airlines follows TSA regulations to maintain safety, and violating these rules may lead to confiscation, delays, or penalties.

Below is a detailed breakdown.

1. Firearms, Weapons, and Explosives

Firearms and weapons are among the most strictly regulated items. While unloaded firearms may be transported in checked baggage if packaged properly, certain weapon types are fully prohibited.

Completely Prohibited Items

• Explosives (grenades, dynamite, blasting caps)

• Flares

• Gunpowder

• Replica explosive devices

• Improvised weapons

Carry-On Not Allowed, Checked Allowed (With Restrictions)

• Firearms (must be unloaded, locked, and declared)

• Ammunition (packaged properly)

• Parts of firearms

Passengers must always comply with Frontier Airlines checked baggage rules and TSA safety protocols.

2. Hazardous Chemicals and Toxic Substances

Frontier prohibits the transportation of dangerous chemicals because they pose fire, explosion, and health hazards.

Banned Items Include:

• Bleach

• Strong detergents

• Spray paints

• Pesticides

• Corrosive materials

• Chlorine

• Pool chemicals

• Acids and alkalis

• Radioactive materials

These items pose serious risks to baggage handlers and aircraft systems.

3. Flammable Items

Anything that can ignite easily is not allowed in carry-on or checked baggage.

Examples:

• Gasoline

• Fuel containers

• Fire starters

• Aerosol paint

• Lighters with torch flame features

• Charcoal

• Turpentine

• Butane cylinders

Small personal-use aerosol items (like deodorant) may be permitted but must comply with TSA’s 3-1-1 rule, part of the Frontier Airlines carry-on policy.

4. Sharp Objects (Carry-On Restrictions)

Sharp objects can pose safety hazards, especially inside the cabin.

Not Allowed in Carry-On:

• Knives (other than butter knives)

• Box cutters

• Razor blades

• Swords

• Ice picks

They may be placed in checked baggage if properly wrapped to prevent injury to handlers and in line with Frontier Airlines luggage policy.

5. Lithium Batteries and Battery-Powered Devices

Lithium batteries pose a fire risk, so they are heavily regulated.

Prohibited Items:

• Loose lithium batteries > 160Wh

• Damaged or recalled batteries

• Hoverboards and electric scooters

Permitted batteries must follow FAA guidelines and be carried in the cabin when possible.

6. Recreational or Sporting Equipment (Certain Restrictions)

While many sporting goods are allowed with fees, some are banned entirely.

Prohibited Sporting Goods:

• Explosive-powered tools

• Fireworks

• Certain chemical propellants

• Large spear guns (depending on local laws)

• Bear spray / pepper spray over allowed limits

Passengers should check Frontier Airlines baggage fees if transporting oversized sporting gear.

7. Pressure Containers

These can explode at high altitude and are therefore banned.

Examples:

• Scuba tanks (unless depressurized)

• Propane tanks

• Pressurized oxygen tanks

Portable oxygen from the airline may be permitted, but personal tanks are not allowed.

8. Illegal Items and Substances

Frontier Airlines, like all U.S. carriers, does not allow illegal drugs.

Illegal to Transport:

• Controlled substances (unless accompanied by legal documentation)

• Marijuana (even if legal in your state — federal law applies)

Always follow local and federal law to avoid complications.

Why Does Frontier Airlines Prohibit These Items?

The items mentioned above are banned due to:

• Fire hazards

• Explosion risks

• Chemical exposure

• Sharp object injuries

• Federal regulations

• TSA and FAA compliance requirements

Following the Frontier Airlines Baggage Policy helps ensure the safety of passengers, flight crew, and airport staff. Airlines operate under strict guidelines, and even minor violations can pose serious risks.

If you have questions about what is allowed, you can always contact My Flight Policy at +1-877-271-4004 for real-time assistance.

How to Check Whether an Item Is Allowed

To avoid confusion or last-minute surprises, here’s how to check permitted vs. prohibited items under the Frontier Airlines luggage policy:

✔ Check the TSA “What Can I Bring?” Tool

This is the most accurate and up-to-date resource.

✔ Review Frontier Airlines’ website

Policies update frequently, especially for batteries, devices, and special equipment.

✔ Contact My Flight Policy

We offer immediate guidance on tricky items—especially if you are unsure whether an item belongs in carry-on or checked baggage.

Tips for Packing Safely Under the Frontier Airlines Baggage Policy

• Pack liquids according to TSA 3-1-1 rules

• Wrap sharp items securely if placing in checked baggage

• Avoid last-minute packing errors by preparing 24 hours before departure

• Check Frontier Airlines baggage allowance to avoid overweight fees

• Confirm any special-item rules (sports gear, medical devices, instruments)

• Take photographs of your luggage in case of mishandling or disputes

These tips ensure smoother travel and compliance with airline safety rules.

Conclusion

Understanding what items are prohibited under the Frontier Airlines Baggage Policy is essential for safe and hassle-free travel. Whether you're packing a small carry-on, multiple checked bags, or special equipment, knowing what is restricted ensures you meet all Frontier Airlines baggage allowance, checked baggage rules, carry-on policy, and Frontier Airlines luggage policy guidelines.

If you are ever uncertain about an item, you can connect with My Flight Policy at +1-877-271-4004 for expert assistance, baggage guidance, or flight-related support. Our team is always ready to help you travel confidently and compliantly.