South Korea’s major international airports keep enclosed indoor smoking rooms after security: Incheon has 21 of them — 5 in Terminal 1, 3 in the Concourse and 13 in Terminal 2 — Gimpo has them on the 2nd and 3rd floors of its International Terminal, and Busan Gimhae has one on the 2nd floor near Gate 11 — so transit passengers can smoke without leaving the secure zone. Korean law restricts smoking to these designated rooms and to outdoor designated areas, which keeps the outcome far more flyer-friendly than the UK or Australia. Like Japan, Korea keeps indoor airside rooms at its main hubs, which makes it much easier than the US (where you must exit security entirely).
For travellers, Incheon is the airport that matters most — it’s one of Asia’s primary long-haul hubs, with onward connections to Europe, North America, and across Asia. The post-security indoor smoking rooms work well for layovers.
How South Korean Airport Smoking Works
Korean law restricts smoking to designated smoking rooms in enclosed public spaces. At airports, the major international terminals provide enclosed airside smoking rooms after security, alongside outdoor designated areas landside. The key feature at Incheon is its 21 airside indoor smoking rooms, all accessible from the transit zone.
Korea’s airport smoking facilities are:
- Marked with bilingual Korean/English signage
- Free to use, no fees
- Indoor rooms airside at the major international terminals; outdoor designated areas landside
- Heat-not-burn devices welcome (huge share of Korean tobacco market)
Korean climate makes outdoor smoking weather-dependent: pleasant spring/autumn, cold January-February, hot/humid July-August.
The Major Hubs
Seoul Incheon (ICN). South Korea’s primary international gateway. Indoor smoking rooms after security — 21 of them, 5 in Terminal 1, 3 in the Concourse building and 13 in Terminal 2, all on the 3rd floor beside the boarding gates — plus 18 designated outdoor areas at the terminal kerbs landside. Among the world’s best-rated airports for amenities and transit experience generally.
인천국제공항 (ICN). 한국의 주요 국제 관문입니다. 보안 검색 이후 실내 흡연실이 21개 있습니다. 제1터미널 5개, 탑승동 3개, 제2터미널 13개로 모두 3층 탑승구 옆에 있으며, 일반구역 커브사이드에는 실외 지정 구역 18곳이 있습니다. 편의시설과 전반적인 환승 경험 면에서 세계 최고 평가를 받는 공항 중 하나입니다.
Seoul Gimpo (GMP). The city airport, primarily domestic and short-haul international (China, Japan). The International Terminal has airside indoor smoking rooms on the 2nd and 3rd floors after security; the Domestic Terminal uses outdoor designated areas just outside the building.
서울 김포공항 (GMP). 주로 국내선과 단거리 국제선(중국, 일본)을 처리하는 도심 공항입니다. 국제선 청사는 보안 검색 이후 2층과 3층에 에어사이드 실내 흡연실이 있고, 국내선 청사는 건물 바로 밖 실외 지정 구역을 사용합니다.
Jeju International (CJU). The world’s busiest single-runway airport, serving the Jeju Island tourist destination. Outdoor designated areas at the terminal, landside — Domestic 1F near Gate 1 and International 3F between Gates 3-4; the terminal interior including the gate area is smoke-free, so smoke before security.
제주국제공항 (CJU). 제주도 관광지를 담당하는, 세계에서 가장 바쁜 단일 활주로 공항입니다. 터미널 일반구역에 실외 지정 흡연 구역(국내선 1층 1번 게이트 부근, 국제선 3층 3-4번 게이트 사이)이 있으며, 터미널 내부와 탑승구 구역은 금연이므로 보안 검색 전에 흡연하세요.
Busan Gimhae (PUS). Southern Korea’s main hub. The International Terminal has an airside indoor smoking room on the 2nd floor near Gate 11 (after immigration), plus designated outdoor areas beside both terminals; the Domestic Terminal is outdoor-only.
부산 김해공항 (PUS). 한국 남부의 주요 허브입니다. 국제선 터미널은 출국 심사 이후 2층 11번 게이트 부근에 에어사이드 실내 흡연실이 있고, 두 터미널 옆에 실외 지정 구역이 있으며, 국내선 터미널은 실외 전용입니다.
Cheongju International (CJJ). The main air gateway for the Chungbuk region, including Daejeon and Sejong. Outdoor booths sit on the ground floor by Gates 1 and 3; the international departure holding area also has an indoor smoking room after security, and the domestic side has no equivalent room.
청주국제공항 (CJJ). 대전과 세종을 포함한 충북 권역의 주요 관문입니다. 1층 1번과 3번 게이트 옆에 실외 부스가 있고, 국제선 출국장에는 보안검색 이후 실내 흡연실도 있으며, 국내선 쪽에는 해당 시설이 없습니다.
Daegu International (TAE). A compact regional airport serving southeastern Korea. A single outdoor smoking booth by Gate 3 is shared by domestic and international passengers, and there is no indoor room.
대구국제공항 (TAE). 한국 남동부를 담당하는 소규모 지방 공항입니다. 3번 게이트 옆 실외 흡연부스 한 곳을 국내선·국제선 이용객이 함께 사용하며, 실내 흡연실은 없습니다.
Gwangju (KWJ). Connects Gwangju mainly to Jeju. Outdoor designated areas sit outside the domestic terminal and, separately, outside the international terminal building; the airport has no indoor smoking room.
광주공항 (KWJ). 광주와 제주를 주로 연결합니다. 국내선 청사 바깥과 별도 건물인 국제선 청사 바깥에 각각 실외 지정 구역이 있으며, 실내 흡연실은 없습니다.
Heat-Not-Burn in Korea
South Korea has one of the world’s highest market shares for heat-not-burn devices like IQOS, glo, and the locally-developed Lil. Over 30% of Korean tobacco consumption is HNB by 2025. At airports, HNB devices use the same designated smoking rooms and areas as cigarettes — at Incheon that means all 21 airside rooms and the 18 kerbside outdoor areas.
Tips for Smokers at South Korean Airports
- Incheon’s airside indoor smoking rooms are the best transit smoking option
- Indoor airside rooms are climate-controlled; bring a jacket for the outdoor landside areas, severe in northern winters
- Heat-not-burn devices and vapes welcome in the same rooms and areas
- Cigarettes cost ₩4,500-5,000 per pack landside (~$3.50-4) — duty-free competitive
- Korean smoking culture is shifting toward HNB; cigarette use declining
- For tight connections (under 90 min) at Gimpo/Jeju/Busan, plan to wait
South Korea Airports Compared: Indoor, Outdoor & After Security
At a glance — which South Korea airports let you smoke after security, in an indoor room, or in an outdoor area:
| Airport | After security | Indoor room | Outdoor area |
|---|---|---|---|
| Busan Gimhae International Airport (PUS) | Yes | Yes | Yes |
| Smoking at Cheongju International Airport – CJJ | Yes | Yes | Yes |
| Smoking at Daegu International Airport – TAE | – | – | Yes |
| Smoking at Gwangju Airport – KWJ | – | – | Yes |
| Jeju International Airport (CJU) | – | – | Yes |
| Seoul Gimpo International Airport (GMP) | Yes | Yes | Yes |
| Incheon International Airport (ICN) | Yes | Yes | Yes |