Seoul ⇄ San Francisco International ICN–SFO
Airlines flew 3,590 flights between Seoul, South Korea ICN in Seoul, KR and San Francisco International SFO in San Francisco, CA in the twelve months to July 2026, both directions together: 708,280 passengers in 859,528 seats, 82% of them filled, and 143,671,744 pounds of freight. 5,659 miles, about 288 minutes in the air, on 7 airlines: United Air Lines Inc. (1,440), Korean Air Lines Co. Ltd. (1,025), Asiana Airlines Inc. (692), AIRZETA CO Ltd. (278) and 3 more.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 363 |
| 2/25 | 327 |
| 3/25 | 352 |
| 4/25 | 350 |
| 5/25 | 373 |
| 6/25 | 357 |
| 7/25 | 366 |
| 8/25 | 342 |
| 9/25 | 324 |
| 10/25 | 331 |
| 11/25 | 309 |
| 12/25 | 283 |
| 1/26 | 298 |
| 2/26 | 256 |
| 3/26 | 298 |
| 4/26 | 291 |
| 5/26 | 291 |
| 6/26 | 282 |
| 7/26 | 285 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 76,091 |
| 2/25 | 60,434 |
| 3/25 | 68,614 |
| 4/25 | 69,864 |
| 5/25 | 75,833 |
| 6/25 | 76,961 |
| 7/25 | 75,285 |
| 8/25 | 68,825 |
| 9/25 | 59,674 |
| 10/25 | 65,089 |
| 11/25 | 60,052 |
| 12/25 | 56,581 |
| 1/26 | 42,818 |
| 2/26 | 49,271 |
| 3/26 | 56,680 |
| 4/26 | 59,815 |
| 5/26 | 62,713 |
| 6/26 | 63,580 |
| 7/26 | 63,182 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| United Air Lines Inc. UA | 1,440 | 316,329 | 85% | scheduled passenger service |
| Korean Air Lines Co. Ltd. KE | 1,025 | 188,658 | 83% | scheduled passenger service |
| Asiana Airlines Inc. OZ | 692 | 171,290 | 80% | scheduled passenger service |
| AIRZETA CO Ltd. KJ | 278 | 0 | scheduled cargo service | |
| Air Premia YP | 146 | 31,805 | 68% | scheduled passenger service |
| Kalitta Air LLC KAQ | 8 | 0 | charter cargo service | |
| Aeromexico AM | 1 | 198 | 74% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| B787-900 Dreamliner | 1,609 | 263 | 352,710 |
| Airbus Industrie A350-900 | 692 | 311 | 171,290 |
| Boeing 787-10 Dreamliner | 535 | 325 | 144,724 |
| Boeing 747-400F | 278 | 0 | 0 |
| Boeing B747-8 | 261 | 0 | 0 |
| Boeing 777-300/300ER/333ER | 172 | 277 | 39,556 |
| Boeing 747-400 | 43 | 0 | 0 |
ICN → SFO this direction alone · flown January 2025 to July 2026
1,506 flights of 722 scheduled, 365,691 passengers in 430,216 seats, 45,453,578 pounds of freight, 181,144 pounds of mail. United Air Lines Inc. 720; Korean Air Lines Co. Ltd. 365; Asiana Airlines Inc. 347; Air Premia 73; Aeromexico 1.
SFO → ICN this direction alone · flown January 2025 to July 2026
2,084 flights of 722 scheduled, 342,589 passengers in 429,312 seats, 98,218,166 pounds of freight, 976,169 pounds of mail. United Air Lines Inc. 720; Korean Air Lines Co. Ltd. 660; Asiana Airlines Inc. 345; AIRZETA CO Ltd. 278; Air Premia 73; Kalitta Air LLC 8.
Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Seoul, South Korea ICN and San Francisco International SFO; all routes.