Yes, you can smoke at Honolulu International Airport (HNL) in the marked outdoor designated areas — roadway medians, upper parking garage floors, and uncovered lots outside Terminals 1, 2, and 3. The terminals themselves are smoke-free under Hawaii’s “cabin to curb” law, so there is no smoking inside or on the open-air walkways and gardens.
How Honolulu Airport Is Laid Out
HNL (officially Daniel K. Inouye International Airport) spreads across three terminals linked by split-level roadways and elevated walkways. Terminal 1, the Interisland Terminal, sits on the west (Ewa) side and handles Hawaiian Airlines interisland and some U.S. mainland flights. Terminal 2, the Overseas Terminal, is the largest and handles the remaining mainland and all international flights across its Diamond Head, Central, and Ewa concourses. Terminal 3, a small commuter facility on the Diamond Head (east) side, serves Mokulele Airlines. Terminals 1 and 2 are connected after security, so you can walk between them without re-screening — though carry-ons pass through a USDA agricultural inspection station when moving from Terminal 1 to Terminal 2.
A defining feature is the open-air design: the concourses connect through breezy walkways and the airport’s well-known cultural gardens — the Chinese, Japanese, and Hawaiian gardens on the central courtyard. Even though much of the airside is open to the air, Hawaii’s “cabin to curb” law makes the whole facility no-smoking — open-air does not mean smoking is allowed there. Every designated smoking area is landside, outside the terminal buildings.
Terminal 2 (Overseas Terminal)
Smoking areas: Outdoor only. Designated spots are the ground-level Diamond Head group tour area (uncovered), the 2nd-level roadway median fronting the ticket lobbies, the parking garage 5th floor (kept 20+ feet from entryways and landings), and the uncovered parking lots.
After security: No smoking areas. The gate concourses and open-air walkways are smoke-free, so you must exit and re-clear TSA to return.
Terminal 1 (Interisland Terminal)
Smoking areas: Outdoor only — ground level next to Pre-Arranged 1, between Terminal 1 and the International Arrivals Building, plus the parking garage 7th floor (20+ feet from entryways and landings).
After security: No smoking areas. Terminal 1 connects to Terminal 2 airside, but neither side has a post-security smoking spot.
Terminal 3
Smoking areas: Outdoor only — the public parking lot against the fence, in the marked areas.
After security: No smoking areas.
Buffer-Zone Rule
In every designated spot you must stay at least 20 feet from any doorway, window, or ventilation duct. Hawaii Revised Statutes Chapter 328J bans smoking in enclosed and semi-enclosed public places, and the airport applies that “cabin to curb” rule across all three terminals — including the open-air courtyards and walkways that might otherwise look like fair game. If you have already cleared the checkpoint, you will need to exit, walk to a designated area, then re-clear TSA, so allow extra time.
E-Cigarettes and Vaping
Hawaii’s smoke-free law (Chapter 328J) covers electronic smoking devices, so vaping and e-cigarettes are treated exactly like cigarettes at HNL. Use the same outdoor designated areas — vaping inside the terminals or in the open-air concourse areas is prohibited.
Summary
| Area | Smoking Allowed | Location Details |
|---|---|---|
| Inside terminals (T1/T2/T3) | No | “Cabin to curb” smoke-free, including open-air walkways and gardens |
| After security | No | No airside smoking areas — exit and re-clear TSA |
| Terminal 2 – outdoor | Yes | Diamond Head tour area, 2nd-level roadway median, garage 5th floor, uncovered lots |
| Terminal 1 – outdoor | Yes | Ground level by Pre-Arranged 1; garage 7th floor |
| Terminal 3 – outdoor | Yes | Public parking lot against the fence (marked) |
| Vaping/e-cigarettes | Outdoor only | Same rules as cigarettes |
For USA airport smoking rules, state vape rules, lighter rules at TSA, and other federal/state info, see our USA smoking guide.