FLIGHTLINE INTEL COMMERCIAL AVIATION INTELLIGENCE
Route T-100 Intelligence

SEA ↔ SFO

Two-way market traffic, capacity, airline participation and annual performance.

761,636
2026 passengers
6,383
2026 departures
82.6%
2026 market load factor

2026 airlines

CodeAirlinePassengersDeparturesLoad factor
ASAlaska Airlines Inc.360,0902,51384.1%
UAUnited Air Lines Inc.237,3721,85682.5%
DLDelta Air Lines Inc.99,0801,00875.7%
OOSkyWest Airlines Inc.64,53899987.6%
WNSouthwest Airlines Co.556745.4%

Annual history

YearPassengersPassengers/daySeatsDeparturesLoad factor
20152,025,0895,548.22,504,63819,32680.9%
20162,096,9175,729.32,657,55819,40378.9%
20172,297,3416,294.12,778,63319,21582.7%
20182,328,5356,379.52,787,65819,20083.5%
20192,233,8816,120.22,835,12519,71778.8%
2020606,7051,657.71,351,42710,48444.9%
2021945,1212,589.41,472,38811,34864.2%
20221,467,9084,021.71,826,61213,28780.4%
20231,575,5644,316.61,994,75613,36079.0%
20241,552,3224,241.31,904,98713,20481.5%
20251,618,9434,435.51,995,62513,79481.1%
2026761,6364,207.9921,9286,38382.6%
Source: U.S. Department of Transportation, Bureau of Transportation Statistics T-100 Segment data.