Seoul (ICN) to San Francisco (SFO)
Flight time
≈ 12h 05m
Bearing
48° NE
Seoul (ICN) to San Francisco (SFO) is 5,645 miles (9,085 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ICN–SFO
Filed traffic dataIn May 2026, United Airlines operated the most departures, one of 3 carriers flying nonstop ICN–SFO; the Boeing 787-9 was the most common aircraft at 50% of departures; flights ran 89% full.
Departures
246
May 2026
Seats
70,786
both directions
Passengers
62,713
both directions
Load factor
88.6%
RPM ÷ ASM
Who flies ICN–SFO?
United Airlines operated the most nonstop ICN–SFO departures in May 2026 (122), one of 3 carriers on the route.
- UA
122 departures · 31,354 seats
Share of departures49.6%86.8%
Load
- KE
Korean Air
62 departures · 20,150 seats
Share of departures25.2%84.9%
Load
- OZ
Asiana Airlines
62 departures · 19,282 seats
Share of departures25.2%95.3%
Load
What plane flies ICN–SFO?
In May 2026, the Boeing 787-9 flew 50% of ICN–SFO departures — more than any other aircraft type.
- Boeing 787-9
122 departures · 86.8% load
49.6% - Airbus A350-900
62 departures · 95.3% load
25.2% - Boeing 787-10
62 departures · 84.9% load
25.2%
How has ICN–SFO traffic changed?
Nonstop ICN–SFO departures fell from 307 in June 2025 to 246 in May 2026.
Monthly nonstop ICN–SFO traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
307 departures · 76,961 passengers
87.5%
Load
July 2025
318 departures · 75,285 passengers
83.0%
Load
August 2025
290 departures · 68,825 passengers
83.9%
Load
September 2025
273 departures · 59,674 passengers
77.8%
Load
October 2025
278 departures · 65,089 passengers
82.7%
Load
November 2025
258 departures · 60,052 passengers
80.3%
Load
December 2025
230 departures · 56,581 passengers
86.1%
Load
January 2026
244 departures · 42,818 passengers
61.3%
Load
February 2026
212 departures · 49,271 passengers
81.1%
Load
March 2026
247 departures · 56,680 passengers
79.9%
Load
April 2026
240 departures · 59,815 passengers
86.7%
Load
May 2026
246 departures · 62,713 passengers
88.6%
Load
By direction
Each direction is filed separately — they rarely match.
ICN → SFO
86.0% full
123 departures · 30,439 passengers
SFO → ICN
91.2% full
123 departures · 32,274 passengers
Nonstop ICN–SFO traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
The airports
Seoul
KR
Incheon International Airport
Coordinates
37.47°N, 126.45°E
Hemisphere
N · E
Frequently asked
How far is Seoul (ICN) from San Francisco (SFO)?
ICN to SFO is 5,645 miles (9,085 km / 4,906 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ICN to SFO?
A nonstop covers the 5,645-mile great-circle distance in roughly 12h 05m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ICN–SFO?
In May 2026, the Boeing 787-9 flew the largest share of departures (49.6%), followed by the Airbus A350-900 (25.2%).
What mileage do I earn flying ICN–SFO?
Distance-based programs credit off the 5,645-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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