11 active days
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Tracked directional route
BFI → SEA
King County International Airport → Seattle-Tacoma International Airport
BFI
KBFIKing County International AirportOpen live airport profile →DestinationSEA
KSEASeattle-Tacoma International AirportOpen live airport profile →View return routeSEA → BFIAnalysis window
Aug 21 – 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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63.1 mi avg per flight
17 min average
Average across flights included in analytics
13 flight numbers
Tracked activity
Aug 21 – Sep 24, 2026 · 11 active days
Flights14
Aug 21
Aug 22
Aug 23
Aug 27
Aug 31
Sep 5
Sep 7
Sep 10
Sep 13
Sep 20
Sep 21
Observed operators
Operators tracked on BFI → SEA
Operator activity within Aug 21 – Sep 24, 2026.
| Operator | Flights | Flight numbers | Tail numbers | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| 5 | 5 | 5 | 286 mi | Aug 22, 2026, 1:20 AM UTC | Sep 21, 2026, 7:12 PM UTC | |
| 3 | 2 | 3 | 147 mi | Aug 23, 2026, 2:21 PM UTC | Sep 20, 2026, 8:47 PM UTC | |
| 2 | 2 | 2 | 190 mi | Aug 31, 2026, 5:21 PM UTC | Sep 7, 2026, 2:51 PM UTC | |
| 2 | 2 | 1 | 90.5 mi | Aug 21, 2026, 11:51 AM UTC | Sep 5, 2026, 11:35 AM UTC | |
| 1 | 1 | 1 | 121 mi | Sep 10, 2026, 3:56 PM UTC | Sep 10, 2026, 4:27 PM UTC | |
Observed services
Flight numbers tracked on BFI → SEA
Open a flight number for its complete tracked profile.
| Flight number | Flights | Tail numbers | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|
| 2 | 2 | 106 mi | Aug 23, 2026, 2:21 PM UTC | Sep 20, 2026, 8:47 PM UTC | |
| 1 | 1 | 61.9 mi | Sep 21, 2026, 6:55 PM UTC | Sep 21, 2026, 7:12 PM UTC | |
| 1 | 1 | 67.6 mi | Sep 20, 2026, 11:28 PM UTC | Sep 20, 2026, 11:46 PM UTC | |
| 1 | 1 | 41 mi | Sep 13, 2026, 9:15 PM UTC | Sep 13, 2026, 9:27 PM UTC | |
| 1 | 1 | 121 mi | Sep 10, 2026, 3:56 PM UTC | Sep 10, 2026, 4:27 PM UTC | |
| 1 | 1 | 41.4 mi | Sep 10, 2026, 1:34 PM UTC | Sep 10, 2026, 1:46 PM UTC | |
Observed tail numbers
Tail numbers tracked on BFI → SEA
Open a tail number for its complete tracked profile.
| Tail number | Type | Flights | Flight numbers | Tracked distance | Last observed |
|---|---|---|---|---|---|
| B763 | 2 | 2 | 90.5 mi | Sep 5, 2026, 11:35 AM UTC | |
| C68A | 1 | 1 | 61.9 mi | Sep 21, 2026, 7:12 PM UTC | |
| C700 | 1 | 1 | 67.6 mi | Sep 20, 2026, 11:46 PM UTC | |
| B738 | 1 | 1 | 57.2 mi | Sep 20, 2026, 8:47 PM UTC | |
| B738 | 1 | 1 | 41 mi | Sep 13, 2026, 9:27 PM UTC | |
| E170 | 1 | 1 | 121 mi | Sep 10, 2026, 4:27 PM UTC |
Observed aircraft types
Aircraft types tracked on BFI → SEA
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 |
|---|---|---|---|---|---|---|---|---|---|
| B738 | Boeing 737-800 | 4 | 28.6% | 4 | 194 mi | 2 | 3 | Aug 23, 2026, 2:21 PM UTC | Sep 20, 2026, 8:47 PM UTC |
| C68A | Cessna 680A Citation Latitude | 2 | 14.3% | 2 | 103 mi | 1 | 2 | Sep 10, 2026, 1:34 PM UTC | Sep 21, 2026, 7:12 PM UTC |
| B763 | Boeing 767-300 | 2 | 14.3% | 1 | 90.5 mi | 1 | 2 | Aug 21, 2026, 11:51 AM UTC | Sep 5, 2026, 11:35 AM UTC |
| E545 | Embraer EMB-545 Legacy 450 | 2 | 14.3% | 2 | 112 mi | 2 | 2 | Aug 27, 2026, 10:06 PM UTC | Aug 31, 2026, 4:51 PM UTC |
| C700 | Cessna 700 Citation Longitude | 1 | 7.1% | 1 | 67.6 mi | 1 | 1 | Sep 20, 2026, 11:28 PM UTC | Sep 20, 2026, 11:46 PM UTC |
| E170 | Embraer E170 | 1 | 7.1% | 1 | 121 mi | 1 | 1 | Sep 10, 2026, 3:56 PM UTC |
Observation log
Flight observations
Latest 100 flights on BFI → SEA within Aug 21 – Sep 24, 2026