Seattle
BFI · KBFIKing County International Airport - Boeing Field
Passengers a year
57.8K
#231 busiest in the U.S.
5
nonstop destinations
39
airlines
13
departures a day
29.2%
load factor
Airlines
Kenmore Air Harbor is the largest carrier at Seattle, with 50% of all passengers. 39 airlines fly from here.
Share of passengers · each carrier as a slice of the whole airport
Kenmore Air Harbor holds 50% of the airport — the 72nd most concentrated of 118 non-hub airports. The nearest comparison is ATT at 51%.
| Airline | Share | Passengers | Seats YoY | |
|---|---|---|---|---|
M5 Kenmore Air Harbor62% full | 50.5% | 29.2K | 3 | -4.4% |
X4 Air Excursions20% full | 9.4% | 5.4K | 2 | — |
DL Delta50% full | 9.4% | 5.4K | — | — |
AC Air Canada69% full | 6.1% | 3.5K | — | — |
SY Sun Country32% full | 5.9% | 3.4K | — | — |
+Other airlines | 18.8% | 10.9K | — | — |
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
2,542 departures · 65% full
54.1%
Pilatus PC-12
1,817 departures · 22% full
38.7%
- Narrowbody
72 departures · 36% full
1.5%
- Narrowbody
68 departures · 60% full
1.5%
- Narrowbody
50 departures · 40% full
1.1%
- Narrowbody
25 departures · 47% full
0.5%
- Unclassified
15 departures · 25% full
0.3%
Bombardier Global 6000
10 departures · 28% full
0.2%
Cessna Citationjet
9 departures · 40% full
0.2%
- Widebody
9 departures · 2% full
0.2%
When Seattle is busiest
Departures by month over the trailing year. Bars scale to the busiest month.
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
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
- 19,336 so far
Frequently asked
How busy is King County International Airport - Boeing Field (BFI)?
King County International Airport - Boeing Field handled about 57.8K passengers over the trailing 12 months, ranking #231 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 50% 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 54% of the total.
Departing counts passengers leaving Seattle. Data: traffic June 2025 – May 2026. Source: US DOT Bureau of Transportation Statistics (T-100 Segment).