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Federal Land Warning: Cannabis on Federal Property in Hawaii

Over 20% of Hawaii is federal land. Cannabis is illegal on all federal property — national parks, airports, military bases, and more — regardless of your 329 card or state law.

Last verified: March 2026

Why Federal Land Matters in Hawaii

Cannabis remains a Schedule I controlled substance under the federal Controlled Substances Act (21 U.S.C. §812). No state law, medical card, or 329V visitor authorization changes this. On federal property, federal law applies exclusively — your Hawaii 329 card provides zero protection.

This is particularly important in Hawaii because over 20% of the state's total land area is federally owned or managed. For visitors, the most common encounters with federal land include airports, national parks, military installations, and national wildlife refuges. Many of these are popular tourist destinations or unavoidable transit points.

20%+
Federal Land Area
5+
Military Installations
2
National Parks
All
Airports Are Federal

Major Federal Lands by Island

The following is not exhaustive — it covers the most significant federal properties that visitors are likely to encounter.

Oahu

Oahu has the highest concentration of federal military land in Hawaii, home to the headquarters of the U.S. Indo-Pacific Command.

  • Joint Base Pearl Harbor–Hickam (JBPHH) — The combined Navy/Air Force base including the Pearl Harbor National Memorial and Hickam Air Force Base. One of the largest military installations in the Pacific.
  • Schofield Barracks — Major U.S. Army installation in central Oahu, home to the 25th Infantry Division.
  • Daniel K. Inouye International Airport (HNL) — Hawaii's primary airport. All areas of the airport are under federal jurisdiction where TSA operates.
  • Diamond Head State Monument — While primarily state-managed, the crater contains federal military facilities and the Diamond Head National Natural Landmark designation. Use caution.
  • Fort Shafter — U.S. Army installation, headquarters of U.S. Army Pacific.
  • Marine Corps Base Hawaii (MCBH Kaneohe Bay) — Major Marine Corps installation on the windward side.
  • James Campbell National Wildlife Refuge — Federal wildlife refuge on the North Shore.

Big Island (Hawaii Island)

  • Hawaii Volcanoes National Park — Over 335,000 acres of federal land encompassing Kilauea and Mauna Loa. One of Hawaii's most visited tourist destinations. Cannabis is illegal within the entire park boundary.
  • Pohakuloa Training Area (PTA) — A 108,863-acre U.S. Army installation in central Hawaii Island. The Saddle Road (Daniel K. Inouye Highway, Route 200) passes through portions of this federal military land.
  • Hakalau Forest National Wildlife Refuge — Federal refuge on the windward slopes of Mauna Kea.
  • Ellison Onizuka Kona International Airport (KOA) and Hilo International Airport (ITO) — Both under federal jurisdiction.

Maui

  • Haleakala National Park — Over 33,000 acres of federal land, including the summit crater (a popular sunrise viewing destination) and the Kipahulu district along the coast. Cannabis is illegal throughout the park.
  • Kahului Airport (OGG) — Maui's primary airport, under federal jurisdiction.
  • Kealia Pond National Wildlife Refuge — Federal wetland refuge near Kihei.

Kauai

  • Na Pali Coast — Portions of the Na Pali Coast include federal wilderness areas. While much of it is state-managed, some areas carry federal designations.
  • Pacific Missile Range Facility (PMRF) — U.S. Navy installation at Barking Sands on Kauai's west side. The world's largest instrumented multi-environmental range.
  • Kilauea Point National Wildlife Refuge — Federal refuge on the north shore, home to the Kilauea Lighthouse.
  • Lihue Airport (LIH) — Kauai's main airport, under federal jurisdiction.

All Islands

The following types of property are always federal land, regardless of which island they are on:

  • All airports — TSA operates under federal authority at every Hawaii airport
  • Post offices — All U.S. Postal Service facilities
  • Federal courthouses and government buildings
  • National wildlife refuges
  • Military installations and housing
  • National parks, monuments, and historic sites
  • Coast Guard stations
Your 329 Card Means Nothing on Federal Land

A Hawaii 329 card or 329V visitor card is a state-issued authorization. It carries no legal weight on federal property. Federal law enforcement (park rangers, military police, TSA agents, federal officers) operate under the Controlled Substances Act, which classifies cannabis as Schedule I with no accepted medical use.

Airports: The Most Common Trap

Every airport in Hawaii is under federal jurisdiction. This affects visitors in two critical ways:

  1. Departing Hawaii: Carrying cannabis through any Hawaii airport — whether flying to the mainland, internationally, or between islands — is a federal offense.
  2. Inter-island flights: Since all inter-island travel requires passing through an airport, the federal jurisdiction of airports reinforces the state-level inter-island transport ban. See Inter-Island Rules.

TSA's primary mission is aviation security, not drug enforcement. However, TSA agents are required to report any illegal substances they discover during screening to local law enforcement. In a federal facility, that means referral to federal authorities.

National Parks: A Common Mistake

Hawaii Volcanoes National Park and Haleakala National Park are among the most visited tourist destinations in Hawaii. Many visitors assume that since they have a valid 329V card, they can bring their cannabis along for the trip. This is wrong.

National parks are exclusively federal land managed by the National Park Service. Park rangers are federal law enforcement officers with full authority to enforce the Controlled Substances Act. Possessing cannabis within any national park is a federal offense — your state medical card is irrelevant.

Federal Penalties

Offense Maximum Penalty (First Offense)
Simple possession on federal land Up to 1 year imprisonment and $1,000 fine
Possession with intent to distribute Up to 5 years imprisonment and $250,000 fine
Transporting cannabis to/from Hawaii Up to 5 years imprisonment and $250,000 fine (federal trafficking)
Second or subsequent federal offense Penalties double — up to 2 years for simple possession

Beyond criminal penalties, a federal cannabis conviction can affect immigration status, professional licenses, federal employment, government security clearances, and federal student aid eligibility.

Practical Advice for Visitors

  • Leave cannabis at your accommodation before visiting any national park, military memorial, or airport area.
  • Do not carry cannabis in your rental car when driving through areas with federal land, such as the Saddle Road on the Big Island.
  • Consume before you go — if you plan to visit a national park, use cannabis at your private accommodation beforehand and do not bring any products with you.
  • When in doubt, leave it behind. The boundaries of federal land are not always clearly marked. If you are unsure whether an area is federal property, do not bring cannabis.
Plan Your Day Trips

If you have a day trip to Hawaii Volcanoes National Park or Haleakala planned, leave all cannabis products at your private accommodation. Consume before you leave if needed. Do not bring any cannabis into any national park, even in a sealed container in your car.

Official Sources

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