3 active days
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Tracked directional route
BFI → STS
King County International Airport → Sonoma County Airport
BFI
KBFIKing County International AirportOpen live airport profile →DestinationSTS
KSTSSonoma County AirportOpen live airport profile →View return routeSTS → BFIAnalysis window
Aug 31 – Sep 24, 2026
Every derived statistic, trend, operator and tail number breakdown, flight observation, and mapped path below uses this flight-date window.
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665 mi avg per flight
1 hr 35 min average
Average across flights included in analytics
3 flight numbers
Tracked activity
Aug 31 – Sep 24, 2026 · 3 active days
Flights3
Aug 31
Sep 12
Sep 22
Observed operators
Operators tracked on BFI → STS
Operator activity within Aug 31 – Sep 24, 2026.
| Operator | Flights | Flight numbers | Tail numbers | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 648 mi | Sep 22, 2026, 8:07 PM UTC | Sep 22, 2026, 9:32 PM UTC | |
| 1 | 1 | 1 | 684 mi | Sep 12, 2026, 11:44 PM UTC | Sep 13, 2026, 1:30 AM UTC | |
| 1 | 1 | 1 | 664 mi | Aug 31, 2026, 9:36 PM UTC | Aug 31, 2026, 11:10 PM UTC |
Observed services
Flight numbers tracked on BFI → STS
Open a flight number for its complete tracked profile.
Observed tail numbers
Tail numbers tracked on BFI → STS
Open a tail number for its complete tracked profile.
Observed aircraft types
Aircraft types tracked on BFI → STS
Observed flights grouped by aircraft designator and matched to the aircraft reference catalog.
| Type | Aircraft name | Flights | Makeup | Tail numbers | Tracked distance | Operators | Flight numbers | First observed | Last observed |
|---|---|---|---|---|---|---|---|---|---|
| CL30 | Bombardier Challenger 300 | 1 | 33.3% | 1 | 648 mi | 1 | 1 | Sep 22, 2026, 8:07 PM UTC | Sep 22, 2026, 9:32 PM UTC |
| E545 | Embraer EMB-545 Legacy 450 | 1 | 33.3% | 1 | 684 mi | 1 | 1 | Sep 12, 2026, 11:44 PM UTC | Sep 13, 2026, 1:30 AM UTC |
| A21N | Airbus A321neo | 1 | 33.3% | 1 | 664 mi | 1 | 1 | Aug 31, 2026, 9:36 PM UTC | Aug 31, 2026, 11:10 PM UTC |
Observation log
Flight observations
Latest 100 flights on BFI → STS within Aug 31 – Sep 24, 2026