Originfacts

Flight route

Flights from Seoul (ICN) to San Francisco (SFO)

Distance, flight time and the airlines in Originfacts’ route record for Seoul to San Francisco, the two airports, and partner fare tools. Each figure shows where it came from.

IATA code ICNFromSeoulIncheon International Airport, South Korea
9,086 km~10h 57m est.
IATA code SFOToSan FranciscoSan Francisco International Airport, United States
In our route record:Delta Air LinesKorean AirAsiana AirlinesSingapore AirlinesUnited Airlines
Find flights ICN → SFO

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Route record, updated 21 May 2026Where this comes from

ICN → SFO at a glance

  • Distance

    9,086 km

    About 5,646 miles: the great-circle distance between the two airports’ coordinates.

    Route record · checked against coordinates

  • Flight time

    ~10h 57m

    An estimate, not a timetable. The airline’s schedule gives the actual time.

    Route record estimate

  • Time difference

    −16h

    San Francisco is 16h behind Seoul today. ICN: Asia/Seoul (UTC+9) · SFO: America/Los_Angeles (UTC−7)

    Calculated from IANA time zonesTime zones: Time difference

  • Airlines in route record

    5

    Delta Air Lines, Korean Air, Asiana Airlines, Singapore Airlines and United Airlines

    Originfacts route recordSee airlines: Airlines in route record

  • Return route

    SFO → ICN

    Flights from San Francisco back to Seoul.

    Originfacts route recordRelated routes: Return route

Airlines on the ICN–SFO route

Route record · 21 May 2026

The airlines Originfacts’ route record lists for ICN–SFO, after leaving out carriers listed only through a recycled airline code or as a codeshare. It is not a full schedule and does not say which airlines fly nonstop; check current flights with the airline.

Baggage and check-in rules are each airline’s general rules, read from its own site on the date shown. They are not specific to this route, and your fare type can change them: check your booking.

Fare calendar and schedule for ICN → SFO

Partner tools · indicative

Two tools from Aviasales, our flight-search partner. They load only if you allow advertising cookies. Prices in them come from recent searches and are indicative, not quotes; the fare on the booking page can differ. The schedule shows flights in the partner’s data, including codeshares sold by other airlines.

Fare calendar

This price calendar is provided by our partner Travelpayouts (Aviasales) and sets cookies.

Or search on flights.originfacts.com, our partner’s site

Flight schedule

This flight schedule is provided by our partner Travelpayouts (Aviasales) and sets cookies.

Or search on flights.originfacts.com, our partner’s site

The airports: Incheon International Airport and San Francisco International Airport

Airport records · OurAirports · Wikidata

Each airport guide lists the airport’s codes, location and time zone, any other routes and airlines Originfacts tracks from ICN or SFO, current weather and nearby airports, and where to check terminal and transport details.

Weather in San Francisco: average high, low and rain by month

NASA POWER · modelled · 2016–2025

Averages of NASA POWER (opens in a new tab) daily values for 2016–2025 at 37.62°, -122.39° near SFO (MERRA-2 reanalysis grid, about 50 km cells), worked out by Originfacts. Modelled, not weather-station readings or a forecast.

In October, San Francisco averages a daily high of 20°C and a low of 13°C, with about 32 mm of rain over the month.

Average daily high and low temperature and average monthly rain near SFO, 2016–2025
MonthHighLowRain
Jan14°C9°C124 mm
Feb14°C9°C87 mm
Mar14°C10°C91 mm
Apr15°C10°C30 mm
May16°C11°C15 mm
Jun17°C12°C2 mm
Jul17°C13°C1 mm
Aug19°C14°C1 mm
Sep20°C15°C5 mm
Octthis month20°C13°C32 mm
Nov17°C11°C53 mm
Dec14°C9°C108 mm

San Francisco airport guide

Getting to and from ICN and SFO

Not yet verified

Ground transport, terminals and parking at either airport have not been checked against the airports’ own pages yet, so none are listed here.

Check directly:airport.kr (opens in a new tab)flysfo.com (opens in a new tab)

Seoul to San Francisco: common questions

Which airlines fly from Seoul to San Francisco?

Originfacts’ route record for ICN–SFO lists Delta Air Lines, Korean Air, Asiana Airlines, Singapore Airlines and United Airlines. It is not a full schedule; check current flights with the airline before booking.

How far is Seoul from San Francisco by air?

About 9,086 km, the great-circle distance between Incheon International Airport and San Francisco International Airport.

How long is the flight from Seoul (ICN) to San Francisco (SFO)?

The Originfacts route record estimates about 10h 57m nonstop. It is an estimate, not a timetable: the airline’s schedule gives the actual flight time.

Is there a time difference between Seoul and San Francisco?

San Francisco is 16h behind Seoul today (UTC−7 in America/Los_Angeles vs UTC+9 in Asia/Seoul).

Sources

Where each part of this page comes from
  • Distance, flight-time estimateOriginfacts route record, checked against the great-circle distance between the airport coordinates21 May 2026
  • AirlinesOriginfacts route record, leaving out carriers listed only through a recycled airline code or as a codeshare21 May 2026
  • Baggage and check-inEach airline’s own pages, via the Originfacts airline fact files; only checked values are shown5 Oct 2026 – 6 Oct 2026
  • Airport codes, time zonesOriginfacts airport records2 May 2026
  • Time differenceCalculated from each airport’s IANA time zone, with daylight saving applied for today’s dateToday
  • Airport websitesWikidata (official website property)—
  • Airport size class, runwaysOurAirports (opens in a new tab) open data (public domain); the size class is OurAirports’ own, not an official category5 Oct 2026
  • Airport opened, operator, passengersWikidata (CC0), each airport’s own item; passenger figures are the latest year recorded there, with its reference where Wikidata gives one5 Oct 2026
  • Weather in San FranciscoNASA POWER (opens in a new tab) daily data (MERRA-2 reanalysis), averaged by month by Originfacts. Modelled, not weather-station readings2016–2025
  • Fare calendar, scheduleAviasales widgets, loaded with advertising consentLive

Schedules, fares and airline rules change. Confirm with the airline before you travel.