Salt Lake City (SLC) to Seattle (SEA) is about 690 miles and typically takes 1 h 55 min by air. Some carriers have hubs at both ends, which makes frequent nonstops more likely. Call (800) 490-3234 for live fares.
SLC to SEA at a glance
| Route | Salt Lake City (SLC) to Seattle (SEA) |
|---|---|
| Distance | about 690 miles / 1,110 km |
| Typical flight time | 1 h 55 min (estimate) |
| Time difference | 1 hours behind |
| Route type | Domestic (U.S.) |
| Airlines with hubs here | Delta Air Lines and Alaska Airlines |
About the Salt Lake City to Seattle route
Travelers between Salt Lake City and Seattle typically choose between a nonstop flight and a one-stop routing through a hub, depending on price and schedule. The distance is about 690 miles.
Flight time and distance
A typical flight takes about 1 h 55 min gate to gate, with a realistic range of 1 h 40 min to 2 h 25 min depending on wind, routing and aircraft. That is an estimate based on the distance of roughly 690 miles (1,110 km), not a published schedule.
Seattle is 1 hour behind Salt Lake City on standard time, so the arrival time on your ticket will look different from the flight duration.
Among the 200 routes in our guides, SLC to SEA is longer than about 17% of them.
For comparison, Salt Lake City to Los Angeles (SLC to LAX) is about 590 miles, so Seattle is a bit farther out from SLC.
The airports
Salt Lake City International Airport (SLC)
Salt Lake City is a Delta hub near some of the best ski resorts in North America. Full SLC guide.
Seattle-Tacoma International Airport (SEA)
Sea-Tac is Alaska Airlines' home hub and a growing Delta gateway to Asia, which makes it a useful connecting point for Alaska, Hawaii and Pacific routes. Full SEA guide.
Do not stop at SLC and SEA. Also compare around Seattle, Portland (PDX), because a different airport can change both the fare and your ground travel.
Airlines on this route
Delta Air Lines has a hub at both ends, so it is the most likely to offer frequent nonstop service and easy rebooking on this route.
Alaska Airlines also has a major presence at one of the two airports.
Airlines add and drop frequencies throughout the year. Our agents can check what is actually scheduled on your dates.
Common connection points
If you choose a one-stop itinerary, likely routings include Alaska Airlines via San Francisco (SFO), which adds about 590 miles (86% beyond the direct distance) or Delta Air Lines via Los Angeles (LAX), which adds about 860 miles (125% beyond the direct distance). Choose the connection with the best weather odds for your travel month and leave a comfortable layover; our layover guide explains how much time is realistic.
Best time to fly
Timing matters here. At SEA, july through September has the clearest weather and the heaviest demand, including cruise-season traffic to Alaska. At SLC, ski season from December to March sees surge demand to Utah resorts.
Ground transport
Getting to and from SLC
The TRAX Green Line reaches downtown in about 25 minutes.
Getting to and from SEA
Link light rail runs from the terminal to downtown Seattle in roughly 40 minutes without road traffic.
Booking tips
Business-heavy routes like SLC to SEA often have the most frequencies on weekday mornings and evenings. If you need flexibility, a standard fare that allows changes is often worth the difference. See Basic Economy vs Main Cabin.
Frequently asked questions
How long is the flight from Salt Lake City to Seattle?
A typical SLC to SEA flight takes about 1 h 55 min, with a likely range of 1 h 40 min to 2 h 25 min. Actual time depends on wind, routing, aircraft and whether you connect.
How far is Seattle from Salt Lake City by air?
The great-circle distance between SLC and SEA is about 690 miles (1,110 km).
Which airlines fly from Salt Lake City to Seattle?
Delta Air Lines and Alaska Airlines have a major presence at SLC or SEA, and service varies by season. Ask us to check current nonstop and connecting options.
What is the time difference between Salt Lake City and Seattle?
Seattle is 1 hour behind Salt Lake City on standard time. Daylight saving time can change the gap for part of the year.
Are there other airports near Seattle?
Yes. Nearby alternatives include Portland (PDX). Comparing them can change both fare and travel time.
When is the best time to book SLC to SEA?
Domestic fares are often competitive one to three months ahead, while international trips benefit from more lead time. Compare several dates, since fares are priced flight by flight.
Explore related routes
More flights involving Salt Lake City (SLC)
- Minneapolis to Salt Lake CityMSP to SLC
- Salt Lake City to AtlantaSLC to ATL
- Salt Lake City to Los AngelesSLC to LAX
More flights involving Seattle (SEA)
- Atlanta to SeattleATL to SEA
- Austin to SeattleAUS to SEA
- Boston to SeattleBOS to SEA
- Detroit to SeattleDTW to SEA
- Dubai to SeattleDXB to SEA
- Houston to SeattleIAH to SEA
Last reviewed October 22, 2026. FlighTicketHub provides general information; confirm details with the airline before you travel.