Boeing Fld/King County International ⇄ Salt Lake City International BFI–SLC
Airlines flew 33 flights between Boeing Fld/King County International BFI in Seattle, WA and Salt Lake City International SLC in Salt Lake City, UT in the twelve months to July 2026, both directions together: 913 passengers in 2,598 seats, 35% of them filled, and 37,095 pounds of freight. 692 miles, about 92 minutes in the air, on 9 airlines: Delta Air Lines Inc. (11), United Parcel Service (7), Air Wisconsin Airlines Corp (5), Eastern Air Express, LLC (EAX) (2) and 5 more. Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 18 |
| 2/25 | 16 |
| 3/25 | 18 |
| 4/25 | 17 |
| 5/25 | 17 |
| 6/25 | 16 |
| 7/25 | 7 |
| 9/25 | 2 |
| 10/25 | 2 |
| 12/25 | 11 |
| 1/26 | 3 |
| 2/26 | 2 |
| 3/26 | 2 |
| 4/26 | 2 |
| 6/26 | 5 |
| 7/26 | 4 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 4 |
| 2/25 | 40 |
| 3/25 | 99 |
| 4/25 | 13 |
| 5/25 | 42 |
| 6/25 | 0 |
| 7/25 | 0 |
| 9/25 | 0 |
| 10/25 | 1 |
| 12/25 | 287 |
| 1/26 | 54 |
| 2/26 | 80 |
| 3/26 | 0 |
| 4/26 | 57 |
| 6/26 | 200 |
| 7/26 | 234 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Delta Air Lines Inc. DL | 11 | 127 | 14% | charter passenger service |
| United Parcel Service 5X | 7 | 0 | scheduled cargo service | |
| Air Wisconsin Airlines Corp ZW | 5 | 137 | 55% | charter passenger service |
| Eastern Air Express, LLC (EAX) 37Q | 2 | 149 | 49% | charter passenger service |
| Alaska Airlines Inc. AS | 2 | 217 | 61% | charter passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 2 | 80 | 22% | charter passenger service |
| United Air Lines Inc. UA | 2 | 148 | 45% | charter passenger service |
| Jet Aviation Flight Services, Inc. 27Q | 1 | 1 | 7% | charter passenger service |
| Air Canada AC | 1 | 54 | 77% | charter passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 757-200 | 15 | 48 | 127 |
| Canadair RJ-200ER /RJ-440 | 5 | 50 | 137 |
| Boeing 737-800 | 4 | 176 | 228 |
| Boeing 767-300/300ER | 2 | 0 | 0 |
| Boeing B737 Max 900 | 2 | 178 | 217 |
| Boeing 737-300 | 1 | 144 | 92 |
| Boeing 737-700/700LR/Max 7 | 1 | 160 | 57 |
| Airbus Industrie A320-100/200 | 1 | 70 | 54 |
| Dassault Falcon 7X | 1 | 14 | 1 |
| Boeing 737-900ER | 1 | 180 | 0 |
BFI → SLC this direction alone · flown January 2025 to July 2026
18 flights of 7 scheduled, 447 passengers in 1,090 seats, 34,036 pounds of freight. United Parcel Service 7; Air Wisconsin Airlines Corp 4; Delta Air Lines Inc. 3; Eastern Air Express, LLC (EAX) 1; Alaska Airlines Inc. 1; Sun Country Airlines d/b/a MN Airlines 1; United Air Lines Inc. 1.
SLC → BFI this direction alone · flown January 2025 to July 2026
15 flights, 466 passengers in 1,508 seats, 3,059 pounds of freight. Delta Air Lines Inc. 8; Jet Aviation Flight Services, Inc. 1; Eastern Air Express, LLC (EAX) 1; Air Canada 1; Alaska Airlines Inc. 1; Sun Country Airlines d/b/a MN Airlines 1; United Air Lines Inc. 1; Air Wisconsin Airlines Corp 1.
Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Boeing Fld/King County International BFI and Salt Lake City International SLC; all routes.