Airport Railroad serves both Incheon terminals and connects toward Seoul. Use the airport railroad guide to reach the correct station from your terminal.
Rail
Rail is a predictable choice for many central destinations; compare express/local patterns and your final Seoul transfer.
Airport buses
Airport buses can be useful for districts or hotels that are awkward from rail stations.
Taxi
Taxi provides door-to-door travel and can suit groups or late arrivals; road time varies with traffic.
Terminal 1 and Terminal 2 both have rail access
Airport Railroad serves both Incheon passenger terminals, which removes the need to transfer terminals just to reach Seoul. Airport buses can be more direct for some hotel districts, while taxis trade a simpler door-to-door trip for road-traffic uncertainty. Compare the final Seoul stop, arrival hour and luggage before choosing.
Sources and verification
Time-sensitive airport, airline, visa, security and transport details should always be confirmed with the relevant official source before travel.