Flights to Seoul, Korea From the US: 2026 Nonstop Routes

Nonstop flights to Seoul, Korea from the US land at Incheon (ICN). On 4 November 2026 we confirmed nonstops from at least 10 US airports on airline pages: United from Newark and San Francisco, Air Premia from Washington Dulles, Los Angeles, San Francisco, Honolulu and New York, and Delta from Atlanta, Detroit, Minneapolis, Seattle and Salt Lake City. Below is each route with its Incheon terminal, the flight time where an official page gives it, and the train into Seoul. Fares are not on this page.

Which US airports have nonstop flights to Seoul in 2026?

One row per airline and US airport. "ICN terminal" is the terminal at Incheon, from the Incheon Airport self check-in page. Each row is repeated with its source in the airline's section below.

Read the "Flights" and "Official source" columns before you plan. The Delta counts are from January 2025, and airlines change schedules each season.

Before you book, check these 3 things on the airline's own site:

1. That the route runs on your date. Winter schedules can differ from summer ones.

2. The terminal on your e-ticket. Codeshare flights can use a different terminal.

3. The baggage rules in your fare. We did not read them, and they differ by airline.

So, at least 10 US airports had a confirmed nonstop to Incheon on 4 November 2026, on United, Air Premia and Delta.

Is United's Newark to Seoul flight running?

Getting there: Newark (EWR) to Seoul, daily, Boeing 787-9, from 4 September 2026. The same release says it adds to United's twice-daily San Francisco to Seoul flights (United news release, 9 Oct 2025, read 4 Nov 2026)

Address: United checks in at Incheon Terminal 1 (Incheon Airport self check-in page, read 4 Nov 2026)

Note: The Korea Times reported on 7 Sep 2026 that the Korea Tourism Organization and United marked the launch at Newark. That is a news report, not a United page

Note: Not confirmed: United's flight numbers and times. They were not on a United page we could read, so check the United app

United's newsroom has no 2026 release that changes this route. Its releases from March to October 2026 do not mention Seoul.

So, United runs one daily Newark flight and two daily San Francisco flights to Seoul, all at Terminal 1.

How long is the flight from Dulles to Seoul on Air Premia?

Getting there: Washington Dulles (IAD) and Incheon, four days a week: Monday, Wednesday, Friday and Sunday. The flight leaves Incheon at 10:00 and lands at Dulles at 10:50 the same day. The return leaves Dulles at 13:20 and lands at Incheon at 17:45 the next day (Air Premia release, 27 Apr 2026, read 4 Nov 2026)

Getting there: Our math from those times: about 15 hours 25 minutes from Dulles to Seoul, and about 13 hours 50 minutes from Seoul to Dulles. That holds while the US is on daylight saving time. After the clocks change on 1 November 2026, the local times may shift by an hour, so check the app

Note: Boeing 787, 320 seats in premium economy and economy, four days a week, year-round, from 24 April 2026 (Washington Dulles Airport news, 12 Dec 2025, read 4 Nov 2026)

Address: Air Premia uses Incheon Terminal 1, counter C. It opens 3 hours 30 minutes before the flight and closes 1 hour before (Incheon Airport self check-in page, read 4 Nov 2026)

Air Premia is a Korean airline with premium economy and economy only. Its 27 April 2026 release lists its US cities as Los Angeles, San Francisco, Honolulu, New York and Washington, DC. It gives days and times for the Dulles flight only. Air Premia's own Air Premia schedule page lists its US airports as Washington Dulles (IAD), Honolulu (HNL), San Francisco (SFO), Los Angeles (LAX) and New York Newark Liberty (EWR) (read 4 Nov 2026). It shows flights one date at a time, so we did not work out the weekly days for each route, and we did not read its baggage rules.

So, Dulles to Seoul on Air Premia is about 15 hours 25 minutes, four days a week, from Terminal 1.

Which Delta flights go nonstop to Seoul?

Getting there: Delta had 35 weekly flights to Incheon in total from Atlanta, Detroit, Minneapolis and Seattle. A daily Salt Lake City flight (7 a week) was due to start in June, taking the total to 42 (Delta news, 28 Jan 2025, read 4 Nov 2026)

Note: Delta's news site covered the first Salt Lake City to Seoul flight on an A350 on 17 June 2025 (Delta news, 17 Jun 2025, read 4 Nov 2026)

Address: Delta uses Incheon Terminal 2, counter L. The airport says to ask Delta for counter hours (Incheon Airport self check-in page, read 4 Nov 2026)

Delta's Seoul-Incheon news tag had no 2026 posts on 4 November 2026. So the 2025 numbers are the newest Delta gives. The five cities are likely still right. The weekly count is the part to re-check.

So, Delta flies to Seoul from 5 US cities, all into Terminal 2.

Does Korean Air fly nonstop from the US?

Note: Korean Air's US fare pages list Seoul trips from many US cities. A fare page does not say whether a flight is nonstop, and Korean Air's pages timed out when we tried to read them on 4 November 2026. Not confirmed

Address: Korean Air uses Incheon Terminal 2, counter B, from 05:00 until 1 hour before the last flight (Incheon Airport self check-in page, read 4 Nov 2026)

Korean Air and Delta sell seats on each other's flights. One flight can carry both airlines' numbers, and the terminal can then follow the airline that runs the plane.

So, Korean Air is at Terminal 2, but check its own schedule for which US routes are nonstop.

Which terminal at Incheon will I land at?

Address: Terminal 2: Korean Air, Asiana Airlines, Jin Air, Air Seoul, Air Busan and Delta (Incheon Airport arrival page, read 4 Nov 2026)

Address: Terminal 1: Air Premia and United (Incheon Airport self check-in page, read 4 Nov 2026)

Address: Asiana moved to Terminal 2 from 00:00 Korea time on 14 January 2026. Its check-in counters are G, H and J on the 3rd floor, ticketing is at J21 to J23, and its lost-baggage desk is by carousel 12 on the 1st floor (Korea's Ministry of Foreign Affairs notice, 8 Jan 2026, read 4 Nov 2026)

Address: Asiana's counters G and H are open 04:00 to 20:30 (Incheon Airport self check-in page, read 4 Nov 2026)

The airport says the real terminal can differ for codeshare flights. Look at the terminal on your e-ticket, not at this page.

So, Korean Air, Asiana and Delta use Terminal 2, and United and Air Premia use Terminal 1.

Should I fly into Incheon or Gimpo?

Fly into Incheon. Every US nonstop we found uses it. Gimpo is the smaller airport inside Seoul. Our Gimpo guide helps if you later add a flight from another Korean city.

So, for a flight from the US, book Incheon.

How do I get from Incheon to Seoul or Busan?

Getting there: AREX express to Seoul Station: 43 minutes from Terminal 1 and 51 minutes from Terminal 2 (AREX express page, read 4 Nov 2026)

Price: Express fare: ₩13,000 for an adult (₩12,500 for AREX members) and ₩9,500 for a child aged 6 to 12. Gate entry opens 30 minutes before the train, and you must reach the platform 3 minutes before it leaves (AREX ticket page, read 4 Nov 2026)

Getting there: For Busan, ride AREX to Seoul Station, then take the KTX. Our Incheon Airport to Busan guide has the train, bus and flight times

If you land in the evening after a long flight, sleep near the airport or in Seoul and go on to Busan the next day.

So, the AREX express is ₩13,000 and 43 or 51 minutes to Seoul Station.

What we checked and what can change

Read on 4 November 2026:

• United news release, 9 Oct 2025: Newark daily from 4 September on a 787-9, and twice-daily San Francisco. United's newsroom list for later changes (none on Seoul).

• Air Premia release, 27 Apr 2026: Dulles days and times, and its 5 US cities.

• The Air Premia schedule page: Air Premia's airport list, with Newark as its New York airport.

• Washington Dulles Airport news, 12 Dec 2025: start date, Boeing 787, 320 seats.

• Delta news, 28 Jan 2025, Delta news, 17 Jun 2025 and the Delta Seoul-Incheon tag: Delta's 5 cities and weekly counts.

• Incheon Airport self check-in page and arrival page: terminals and counters.

• Korea's Ministry of Foreign Affairs notice, 8 Jan 2026: Asiana's move to Terminal 2.

• AREX express page and AREX ticket page: times, fares and boarding rules.

Not confirmed: United's and Delta's flight numbers, times and flight lengths, Air Premia's days and times for routes other than Dulles, Korean Air's nonstop list (its site loaded on 4 November 2026, but we found no route list outside the booking search), any fare, any baggage rule, and Delta's weekly counts after January 2025. Airlines change schedules each season, so confirm on the airline's site before you book.