Seattle
BFI · KBFIKing County International Airport - Boeing Field
Passengers a year
60.8K
#232 busiest in the U.S.
5
nonstop destinations
39
airlines
13
departures a day
29.1%
load factor
Airlines
Kenmore Air Harbor is the largest carrier at Seattle, with 48% of all passengers. 39 airlines fly from here.
Share of passengers · each carrier as a slice of the whole airport
Kenmore Air Harbor holds 48% of the airport — the 87th most concentrated of 120 non-hub airports. The nearest comparison is KWT at 48%.
| Airline | Share | Passengers | Seats YoY | |
|---|---|---|---|---|
M5 Kenmore Air Harbor63% full | 47.9% | 29.1K | 3 | -2.7% |
X4 Air Excursions24% full | 11.3% | 6.9K | 2 | — |
DL Delta49% full | 9.6% | 5.8K | — | — |
AC Air Canada70% full | 6.0% | 3.6K | — | — |
SY Sun Country31% full | 5.7% | 3.5K | — | — |
+Other airlines | 19.5% | 11.8K | — | — |
Share, passengers and destinations count each airline’s own flights plus the regional flying sold under its brand. Seats year on year compares the latest twelve months against the twelve before them.
Destinations
5 nonstop destinations from Seattle, all domestic.
100% domestic · 0% international · by departing passengers
All nonstop destinations
5 nonstop · 2 airlines · 5 domestic / 0 intl
Aircraft
By share of departures at Seattle.
Body class · share of departures
Cessna 208 Caravan
2,517 departures · 66% full
52.6%
Pilatus PC-12
1,902 departures · 25% full
39.8%
- Narrowbody
75 departures · 58% full
1.6%
- Narrowbody
71 departures · 34% full
1.5%
- Narrowbody
56 departures · 39% full
1.2%
- Narrowbody
20 departures · 49% full
0.4%
- Regional
17 departures · 55% full
0.4%
Bombardier Global 6000
16 departures · 38% full
0.3%
- Widebody
10 departures · 2% full
0.2%
Bombardier Global 5000
9 departures · 19% full
0.2%
When Seattle is busiest
Departures by month over the trailing year. Bars scale to the busiest month.
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Departures a month · peak August 2025
Annual passengers since 1990
Total passengers, arriving and departing, in every year on record.
Passengers a year
Every year
- 1990
- 5,522
- 1991
- 4,639
- 1992
- 2,664
- 1993
- 3,418
- 1994
- 5,862
- 1995
- 2,210
- 1996
- 697
- 1997
- 1,853
- 1998
- 4,330
- 1999
- 1,352
- 2000
- 2,456
- 2001
- 1,467
- 2002
- 6,766
- 2003
- 31,334
- 2004
- 57,073
- 2005
- 47,203
- 2006
- 65,857
- 2007
- 70,204
- 2008
- 69,760
- 2009
- 66,185
- 2010
- 64,376
- 2011
- 61,252
- 2012
- 38,178
- 2013
- 24,315
- 2014
- 37,096
- 2015
- 32,402
- 2016
- 34,079
- 2017
- 33,964
- 2018
- 32,494
- 2019
- 58,925
- 2020
- 23,852
- 2021
- 33,616
- 2022
- 41,911
- 2023
- 56,667
- 2024
- 58,525
- 2025
- 58,489
- 2026
- 33,003 so far
Frequently asked
How busy is King County International Airport - Boeing Field (BFI)?
King County International Airport - Boeing Field handled about 60.8K passengers over the trailing 12 months, ranking #232 among U.S. airports by passengers, with roughly 13 departures a day.
Which airline is the largest at King County International Airport - Boeing Field (BFI)?
Kenmore Air Harbor is the largest carrier at Seattle (BFI), flying about 48% of its passengers. 39 airlines serve Seattle in total.
How many places can you fly nonstop from King County International Airport - Boeing Field (BFI)?
Seattle (BFI) has 5 nonstop destinations, all domestic.
What aircraft flies most from King County International Airport - Boeing Field (BFI)?
The Cessna 208 Caravan flew the largest share of departures from Seattle (BFI), about 53% of the total.
Departing counts passengers leaving Seattle. Data: traffic August 2025 – July 2026. Source: US DOT Bureau of Transportation Statistics (T-100 Segment).