United Begins Nonstop Newark to Seoul Flights, Its First US-Airline Link Between New York and South Korea

On September 4, 2026, United Airlines starts daily nonstop service between Newark Liberty International Airport and Seoul Incheon International Airport. The flight uses a Boeing 787-9 and runs year-round. United says it will be the only US carrier flying nonstop between the New York area and Seoul.

The schedule and the aircraft

The westbound flight leaves Newark at 10:35 a.m. and reaches Incheon at 3:20 p.m. the next day, a scheduled block time just under 16 hours. The return leaves Seoul in the late afternoon and lands at Newark the same evening in about 13 hours 45 minutes, helped by Pacific tailwinds.

United is flying the route with a 257-seat Boeing 787-9. The cabin has 48 Polaris business seats, 21 Premium Plus seats, 39 Economy Plus seats, and 149 standard economy seats.

The great-circle distance is about 6,900 miles (11,100 km). That makes it one of United’s longer routes from Newark, though the airline already flies farther from the same hub to Singapore and Johannesburg.

United is not first on the airport pair. Air Premia, a South Korean low-cost carrier, has flown Newark to Incheon daily since 2023, and Korean Air and Asiana serve Seoul from nearby John F. Kennedy International Airport. What United adds is the first option on a US airline and its own frequent-flyer program.

Why an airline adds a route like this

Seoul has quietly become Newark’s largest East Asian market, with roughly 179,000 round-trip passengers over the year to mid-2026, ahead of Tokyo. Demand on that scale, split between business travel, the technology sector, and family and cultural traffic, is enough to fill one daily widebody without connecting passengers.

The economics also depend on the aircraft. The 787-9 burns far less fuel per seat than the four-engine jets that once flew routes this long, and its roughly 250-seat cabin is small enough that a carrier need not sell a 777’s worth of tickets every day to break even.

That combination is why airlines keep adding thin ultra-long routes that would not have worked 15 years ago, a shift visible across the current list of the world’s longest flights.

The early-September start is deliberate. Launching in the shoulder season lets United build corporate accounts and connecting traffic through Newark before the route faces a first peak. United has leaned on the same playbook for other new long-haul flying, including its first Airbus A321XLR routes to Europe later this year.

For travelers, the practical change is the removal of a stop. A Newark passenger bound for Seoul no longer has to connect through San Francisco, Los Angeles, or a foreign hub, and United estimates about 35 US and Canadian cities gain a same-day one-stop path to Seoul through Newark.