Seattle to Salt Lake City (BFI–SLC) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
BFI–SLC is served by 2 airlines with nonstop service. Sun Country Airlines and Delta Air Lines lead the route. The flight covers 691 miles in approximately 1h 23m. Beyond nonstop, 72 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| SY Sun Country Airlines | 1 | – | – | – | – | – |
| DL Delta Air Lines | 0 | – | – | – | SkyTeam | – |
Connection Landscape
Other ways to reach Salt Lake City from Seattle
| Metric | BFI→SLC | SEA→SLC | PAE→SLC |
|---|---|---|---|
| Distance from BFI | – | 5 mi | 26 mi |
| Nonstop airlines | 2 | 17 | 3 |
| Weekly flights | 1 | 271 | 1 |
| Flight time | 1h 23m | 1h 55m | 1h 28m |
Travel Essentials
BFI: PDT · SLC: MDT
When it's 6:00 PM in Seattle, it's 7:00 PM in Salt Lake City.
TRAX Green Line from the airport station (inside the terminal) to downtown Salt Lake City takes 18 minutes ($2.50). Direct service to Intermodal Hub, Temple Square, and University of Utah. Running 5am to 11pm.Ride-shares to downtown cost $15–25. Taxis are available. For ski resorts, ski resort shuttles and Canyon Transportation offer door-to-door service ($40–60 to Park City). Car rental is on-site. The terminal opened in 2020 and is a single, modern facility; efficient to navigate.
Semi-arid continental climate at 1,290m elevation. Winters (November–March) bring regular snow and inversions. Temperature inversions trap cold air and pollution in the Salt Lake Valley, producing dense fog that can close or delay flights for hours. Snow is frequent but usually manageable. Inversions are the real disruption risk.
Summers are hot and dry (32–38°C) with low humidity and good flying weather. Afternoon thunderstorms occur in July and August but are brief. Spring is windy. The Great Salt Lake creates localized weather effects including lake-effect snow on the north side of the Wasatch.
BFI–SLC Quick Facts
Frequently Asked Questions
Flights from BFI to SLC
King County International Airport - Boeing Field (BFI) and Salt Lake City International Airport (SLC) are connected by nonstop service from Delta Air Lines and Sun Country Airlines. With 1 weekly departures, this is a regularly served route.
BFI to SLC Flight Duration and Schedule
Nonstop flight time from BFI to SLC ranges from 1 hours 23 minutes. The route covers a distance of 691 miles (1,111 km). There are approximately 1 weekly flights outbound and 2 return, totaling 3 flights per week in both directions.
Connecting Options and Alternatives
72 one-stop connections are available, with the fastest taking approximately 3 hours via PAE. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Seattle (SEA), Everett (PAE) and Bellingham (BLI).