Salt Lake City (SLC) to Seattle (SEA) flights
2 airlines fly nonstop from Salt Lake City (SLC) to Seattle (SEA): Alaska Airlines and Delta Air Lines. The two airports are 687 miles (1,106 km) apart. Alaska Airlines is in oneworld and Delta Air Lines is in SkyTeam. There are also 37 ways to fly it with one stop, through Boise, Pasco and Sun Valley and more.
Airlines flying nonstop from SLC to SEA
- Alaska Airlinesoneworld · bookable with 9 programsWho books it
- Delta Air LinesSkyTeam · bookable with 8 programsWho books it
Book SLC to SEA with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Aeromexico RewardsBooks Delta Air Lines
- Air France-KLM Flying BlueBooks Delta Air Lines
- Alaska Atmos RewardsBooks Alaska Airlines
- American AAdvantageBooks Alaska Airlines
- British Airways ClubBooks Alaska Airlines
- Cathay Pacific Asia MilesBooks Alaska Airlines
- China Eastern Eastern MilesBooks Delta Air Lines
- Delta SkyMilesBooks Delta Air Lines
- Finnair PlusBooks Alaska Airlines
- Garuda Indonesia GarudaMilesBooks Delta Air Lines
- Iberia ClubBooks Alaska Airlines
- JAL Mileage BankBooks Alaska Airlines
- Korean Air SKYPASSBooks Delta Air Lines
- Qantas Frequent FlyerBooks Alaska Airlines
- Qatar Airways Privilege ClubBooks Alaska Airlines
- SAS EuroBonusBooks Delta Air Lines
- Virgin Atlantic Flying ClubBooks Delta Air Lines
SLC to SEA with one stop
37 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Boise (BOI)Delta Air Lines the whole way
- Via Pasco (PSC)Delta Air Lines the whole way
- Via Sun Valley (SUN)Delta Air Lines the whole way
- Via Lewiston (LWS)Delta Air Lines the whole way
- Via Redmond (RDM)Delta Air Lines the whole way
- Via Idaho Falls (IDA)Delta Air Lines, then Alaska Airlines
- Via Portland (PDX)Alaska Airlines and Delta Air Lines the whole way
- Via Spokane (GEG)Delta Air Lines the whole way
- Via Jackson (JAC)Delta Air Lines, then Alaska Airlines
- Via Missoula (MSO)Delta Air Lines, then Alaska Airlines
- Via Eugene (EUG)Delta Air Lines the whole way
- Via Bozeman (BZN)Delta Air Lines the whole way
- Via Helena (HLN)Delta Air Lines, then Alaska Airlines
- Via Kalispell (FCA)Delta Air Lines, then Alaska Airlines
- Via Vancouver (YVR)Delta Air Lines the whole way
SLC to SEA: common questions
Which airlines fly nonstop from SLC to SEA?
Alaska Airlines (oneworld) and Delta Air Lines (SkyTeam) fly nonstop from Salt Lake City (SLC) to Seattle (SEA).
How far is Salt Lake City from Seattle by plane?
Salt Lake City (SLC) and Seattle (SEA) are 687 miles (1,106 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book SLC to SEA award flights?
17 programs can book at least one of the nonstop airlines: Aeromexico Rewards, Air France-KLM Flying Blue, Alaska Atmos Rewards, American AAdvantage, British Airways Club, Cathay Pacific Asia Miles, China Eastern Eastern Miles, Delta SkyMiles and 9 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does SLC to SEA cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for SLC to SEA with taxes and fees.
Where can I connect between Salt Lake City and Seattle?
The most direct connections are through Boise (BOI), Pasco (PSC), Sun Valley (SUN), Lewiston (LWS) and Redmond (RDM). On 23 of them the same airline flies both flights, for example Delta Air Lines through Boise.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.