Route guide

San Francisco to Seoul (SFO-ICN): Nonstop Upgrade & Award Space

United Airlines, Korean Air, Asiana Airlines, and Air Premia fly nonstop between San Francisco (SFO) and Seoul (ICN), roughly 34 times a week. Because so many carriers compete on this route, premium seats turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every SFO to ICN departure, so you know which flights have space before you book.

Data current as of July 22, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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34
Nonstop flights a week
5,645 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every SFO to ICN departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for San Francisco to Seoul to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each SFO to ICN departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SFO to ICN on the interactive route map, with schedules, connections, and route statistics.

Airlines flying San Francisco to Seoul nonstop

Carriers operating SFO to ICN nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • United Airlines
  • Korean Air
  • Asiana Airlines
  • Air Premia
See SFO to ICN on the interactive map →

Frequently asked questions about SFO to ICN

How far is Seoul from San Francisco?
SFO to ICN covers about 5,645 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from SFO to ICN?
United Airlines, Korean Air, Asiana Airlines, and Air Premia fly the route nonstop. 2LNR tracks confirmed upgrade and award space on all four of them.
How many flights a week are there from SFO to ICN?
About 34 nonstop flights a week run between San Francisco and Seoul in the current schedule, operated by United Airlines, Korean Air, Asiana Airlines, and Air Premia. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on SFO to ICN?
Open the SFO to ICN calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the San Francisco to Seoul route, and 2LNR will notify you when space opens. It's free to start.

Never miss SFO to ICN upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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