Seattle to Salt Lake City (SEA–SLC) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
SEA–SLC is served by 4 airlines with nonstop service. Alaska Airlines, Delta Air Lines and Frontier lead the route. The flight covers 688 miles in approximately 1h 55m. Beyond nonstop, 123 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| AS Alaska Airlines Also: DE, FI, HA, JL, JX, KE, QR | 63 | 738, 73H, 73J, 7M9, E75 | 1h55-2h16 | Oneworld | DE, FI, HA, JL, JX, KE, QR | |
| DL Delta Air Lines Also: AF, AM, KE, VS, WS | 50 | 221, 321, 32Q, 738, 739 | 2h04-2h16 | SkyTeam | AF, AM, KE, VS, WS | |
| F9 Frontier Also: Y4 | 2 | – | – | – | Y4 | |
| OO SkyWest Airlines | 0 | – | – | – | – |
Weekly Schedule Pattern
Connection Landscape
Other ways to reach Salt Lake City from Seattle
| Metric | SEA→SLC | BFI→SLC | PAE→SLC |
|---|---|---|---|
| Distance from SEA | – | 5 mi | 32 mi |
| Nonstop airlines | 4 | 6 | 3 |
| Weekly flights | 271 | 1 | 1 |
| Flight time | 1h 55m | 1h 23m | 1h 28m |
| Departure OTP | 92% | – | – |
Travel Essentials
SEA: PDT · SLC: MDT
When it's 6:00 PM in Seattle, it's 7:00 PM in Salt Lake City.
Link Light Rail runs from downtown Seattle (Westlake station) to the airport in 38 minutes ($3.50 peak). Trains run every 6–12 minutes during peak hours from 5am to 1am. Ride-shares run $30–50 from downtown; SR-99 and I-5 can be heavily congested southbound during afternoon rush (3–7pm).
Sound Transit 574 express bus serves Tacoma ($2.50–4). Sounder commuter rail connects Tacoma to the airport area via a shuttle.
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.
SEA–SLC Quick Facts
Frequently Asked Questions
Flights from SEA to SLC
Seattle–Tacoma International Airport (SEA) and Salt Lake City International Airport (SLC) are connected by nonstop service from Alaska Airlines, Delta Air Lines, Frontier and SkyWest Airlines. With 271 weekly departures, this is a heavily served route.
SEA to SLC Flight Duration and Schedule
Nonstop flight time from SEA to SLC ranges from 1 hours 55 minutes to 2 hours 16 minutes. The route covers a distance of 688 miles (1,107 km). There are approximately 271 weekly flights outbound and 256 return, totaling 527 flights per week in both directions.
Connecting Options and Alternatives
123 one-stop connections are available, with the fastest taking approximately 3 hours via BFI. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Seattle (BFI), Everett (PAE) and Bellingham (BLI).