Detroit (DTW) to Seoul Incheon (ICN) Flights

Detroit to Seoul Incheon has a daily nonstop on Delta as of November 2026, and it is the only airline flying the route without a stop. The flight leaves from Delta's McNamara Terminal at DTW, takes about 15 to 15.5 hours westbound and about 13 hours coming home, as of recent schedules, and lands at Incheon Terminal 2. US citizens can visit Korea visa-free for tourism, and through December 31, 2026 they do not need a K-ETA. Check with Delta for the exact schedule on your dates.

Who flies Detroit to Seoul nonstop

Delta operates the nonstop, usually with an Airbus A350-900, as of recent schedules. Detroit is one of Delta's US gateways to Seoul, alongside Atlanta, Minneapolis-St. Paul, Seattle and Salt Lake City, and Delta and Korean Air run a joint venture across the Pacific. In practice that means Korean Air sells seats on the Delta flight, and you can book one ticket that continues from Incheon on Korean Air to Tokyo, Bangkok, Manila or elsewhere in Asia.

The westbound flight departs Detroit around midday and arrives in Seoul the following afternoon. The return leaves Incheon in the morning and lands in Detroit the same morning by the clock, because you cross the date line going home. Times shift by season, so confirm them when you book.

Departing DTW

Delta uses the McNamara Terminal, and its long-haul flights typically board from Concourse A. If someone drops you off, tell them McNamara, not Evans: the two terminals are separate buildings and are not connected inside security. Allow at least three hours for an international departure.

Connecting options

If the nonstop is full or the timing does not suit you, these one-stop routings are common:

• Via Chicago O'Hare on Korean Air. Korean Air flies O'Hare to Incheon daily. You would fly Delta or another carrier from Detroit to Chicago first, so check that both legs are on one ticket.
• Via another Delta gateway. Delta also flies to Incheon from Atlanta, Minneapolis-St. Paul, Seattle and Salt Lake City. A Seattle connection keeps the long flight shortest.
• Via Tokyo or another Asian hub. Delta's Detroit to Tokyo Haneda service, or a West Coast connection onto an Asian carrier, can work when the Seoul nonstop is sold out.

With a single ticket the airline is responsible for rebooking you if the first leg is late. Our layover guide explains how much connection time to leave.

Arriving at Incheon

Delta and Korean Air both use Terminal 2. Terminal 1 handles most other airlines, and free AREX trains and shuttle buses link the two, which matters if you are connecting to a carrier in Terminal 1. Incheon is about an hour west of central Seoul, on an island, so plan for the journey in.

• AREX Express train. Runs nonstop to Seoul Station in about 51 minutes from Terminal 2, with departures roughly every 30 to 40 minutes; check the AREX timetable for your arrival time. Seats are reserved and luggage fits easily.
• AREX All-Stop train. Part of the subway network, cheaper and more frequent, but it takes a little over an hour to Seoul Station and stops at Gimpo Airport and Hongdae on the way. Pay with a T-money card.
• Airport limousine buses. Leave from outside the arrivals floor and go directly to districts such as Myeongdong, Gangnam and Jamsil and to many large hotels. Often the easiest choice with heavy bags.
• Taxis. Available at the rank outside arrivals. Expensive for the distance, and tolls are added to the meter. Ask whether the driver takes cards before you set off.

Entry rules for US citizens

US passport holders can visit South Korea without a visa for tourism or short business trips of up to 90 days. Korea normally requires visa-free visitors to hold a K-ETA, an online travel authorization, but the United States is on the list of countries temporarily exempted from it through December 31, 2026, as Korea's Ministry of Foreign Affairs has announced.

• Trips that end by December 31, 2026: no K-ETA is needed. You fill in Korea's e-Arrival Card online within three days before landing instead, or apply for a K-ETA voluntarily, which removes the arrival card step.
• Trips in 2027: as of mid-November 2026, Korea has not announced whether the exemption will be extended. Check the official site, k-eta.go.kr, before you fly and apply there if it is required. Avoid lookalike sites that charge extra.

Make sure your passport is valid for the whole stay. See our guide to passport validity rules.

Best months to fly

Spring, from late March to May, brings cherry blossoms and mild weather, and autumn, from late September to November, is dry with clear skies and fall colors in the mountains. Both are popular, so book early. Summer is hot and humid, with the monsoon season usually from late June into July. Winter is cold and dry, often well below freezing in January, and outside the Lunar New Year holiday it is usually the quietest time to travel. Korea's Chuseok harvest holiday, in September or October depending on the lunar calendar, fills domestic transport and some flights.

Fares, baggage and seats

Delta sells the route in several fare families, from Delta Main Basic up through Main Cabin, Comfort, Premium Select and Delta One suites. Main Basic is the cheapest, but you get your seat assigned at check-in and changes are restricted. Checked-bag allowances on Asia routes depend on the fare and the date the ticket was bought, so confirm what your ticket includes on delta.com before you pay. Our basic economy guide covers the trade-offs. On a flight this long, Premium Select's wider seat and extra legroom are worth pricing.

Time difference

Seoul runs on Korea Standard Time and does not change its clocks. It is 14 hours ahead of Detroit while Michigan is on Eastern Standard Time, from November to March, and 13 hours ahead during Eastern Daylight Time. Our jet lag guide has a plan for a 13- to 14-hour shift.

Flying home

Check in for Delta at Incheon Terminal 2 and give yourself time: the airport is large and security plus emigration can be slow in the morning peak. The flight lands at DTW's McNamara Terminal, where you clear US customs and immigration on arrival. Global Entry or Mobile Passport Control can shorten that line.