One map, pinned from each airport’s published coordinates.
Category scores
Overall is the published weighted sum. A highlighted score is ahead; a tie stays plain.
Ease of use
25% · Wayfinding, security wait, and layout.
ICN7.5
GMP8.4+0.9
Comfort & amenities
20% · Seating, Wi-Fi, cleanliness, and quiet.
ICN8.0+0.8
GMP7.2
Food & retail
Best for
ICN
Food and dining varietyLounge access for elitesReliable public transport to SeoulClean modern facilities
Watch out for
ICN
Arriving at T1 for an Asiana flight after 14 January 2026Walking to a T1 Asiana lounge for an Asiana-operated T2 departureStale AREX All-Stop fares (₩4,150 / ₩4,750) — official table is ₩4,450 / ₩5,050
ICN · Incheon remains an efficient two-terminal hub. Official 2025 traffic is 74,071,475. Asiana metal moved to T2 on 14 January 2026, but T1 Asiana Priority Pass rooms remain for Star Alliance-operated flights. AREX All-Stop is ₩4,450 / ₩5,050, not the older ₩4,150 / ₩4,750 reading.
GMP · Seoul’s close-in city airport: five rail lines and a 22-minute AREX hop to Seoul Station, split domestic/international halls with no sterile link, a Jeju-heavy domestic bank, city-pair international only, and a hard 23:00–06:00 curfew. Priority Pass is one international Sky Hub room.
15% · Food and retail quality and variety.
ICN8.2+0.6
GMP7.6
Ground access
15% · Transit, taxi, and parking to the city.
ICN8.0
GMP9.0+1.0
Reliability
15% · Delays, cancellations, and weather resilience.
ICN7.3
GMP7.4+0.1
Lounges
10% · Worth-it density and access quality.
ICN8.1+2.3
GMP5.8
GMP
Seoul city-pair hops to Haneda, Kansai, Hongqiao, SongshanDomestic Jeju/Busan without the ICN trekTravelers who will actually use AREX or Line 9
Peak-hour security and immigration lines
Sky Hub 21:30–22:00 close on several Priority Pass listings
GMP
23:00–06:00 civil curfew (wheels-on; late inbounds divert to ICN)No sterile walk between domestic and internationalPriority Pass is international-only (Sky Hub)2017 “second domestic terminal by 2025” is not an open hall
Luggage storage
Family rooms
Arrive 3 hours early for international departures
Security and immigration bottlenecks hit 20–60+ minutes at peak.
T2 for Korean Air and Asiana; T1 for most others
Check the boarding pass — inter-terminal shuttle takes 10–15 minutes.
Airside Korean counters beat another convenience-store kimbap
Strong food scene with late options; refill stations beat bottled water.
GMP
Gimpo Airport Station (5 lines)Lotte Mall Gimpo AirportSky Hub LoungeGimpoAir_FreeWiFiMaternity lounges with purifiersBioPass domestic 3F lanes
Treat 23:00 as wheels-on, not as a boarding time
Gimpo’s civil curfew is 06:00–23:00 KST; a late inbound is more likely to divert to Incheon than to sneak onto 32R.
Domestic and international are different buildings
There is no airside walk. Wrong hall means a landside shuttle or the basement moving-walk to the other terminal, then a second security (and immigration on the international side).
Eat landside at Lotte Mall if you have 45 minutes
Lotte Mall Gimpo Airport is attached and posted 10:30–22:00 daily (mall; restaurants and cinema differ). Airside food is thinner, especially international.
