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Cheap flights from Salt Lake City to Seattle

Salt Lake City International Airport (SLC) to Seattle-Tacoma International Airport (SEA). 688 miles, 1h 50m nonstop.

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SLC to SEA at a glance

Computed from airline schedules and the fares we track for this route. Refreshed several times a day.

Distance
688 milesgreat-circle
Typical flight time
1h 50mnonstop, gate to gate
Nonstop airlines
DLUAASSY4 airlinesDelta, United, Alaska
Nonstop flights per day
19all airlines combined
Cheapest month
January 2027over the next six months
Best day to fly
Tuesday21% less than Sunday
Time difference
1h behindSeattle vs Salt Lake City

Salt Lake City to Seattle

Round trips from $64

Per traveler, taxes and fees included. Lowest fare we found departs Tue, Jan 26.

Cheapest month: January 2027

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Salt Lake City to Seattle fares by month

Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.

  1. September 2026from Wed, Sep 30$84
  2. October 2026from Tue, Oct 6$71
  3. November 2026from Wed, Nov 11$71
  4. December 2026from Wed, Dec 9$71
  5. January 2027from Tue, Jan 26$64
  6. February 2027from Wed, Feb 10$64

Airlines flying Salt Lake City to Seattle

4 airlines fly nonstop with 19 departures a day combined.

Connecting options

Every itinerary on this route is nonstop or uses an unusual connection; run a search for specifics.

Tips for this route

  • Delta, United, Alaska and Sun Country all fly SLC to SEA nonstop, so compare the total with bags before picking the lowest base fare: the difference between a basic and a standard economy ticket is often less than one checked bag each way.
  • January 2027 is the cheapest month to fly over the next six months, with round trips from $64; September 2026 is the most expensive at $84 and up, a difference of $20 per traveler.
  • Departing on a Tuesday averages 21% less than a Sunday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
  • Fares on this route are usually lowest 4 to 8 weeks before departure and rise sharply inside two weeks.

Destination guide

Seattle: Coffee, mountains and Puget Sound

Seattle is the Pacific Northwest's gateway: Pike Place Market, the Space Needle and ferries across Puget Sound, with Mount Rainier and the Olympic Peninsula a couple of hours away. Sea-Tac is a Delta and Alaska hub with light rail downtown.

Best time to visit: July–September is dry, sunny and gorgeous — and the most expensive. May–June and late September are good compromises. October–April is gray and drizzly but cheap.

Flying the other way? Seattle to Salt Lake CityFares, airlines and tips for SEA to SLC.

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Salt Lake City to Seattle: common questions

How long is the flight from Salt Lake City to Seattle?

A nonstop flight from Salt Lake City (SLC) to Seattle (SEA) takes about 1h 50m gate to gate, covering 688 miles. Connecting itineraries add the layover, typically 1 to 3 hours more in total.

Which airlines fly nonstop from SLC to SEA?

Delta Air Lines, United Airlines, Alaska Airlines and Sun Country Airlines operate nonstop flights from Salt Lake City (SLC) to Seattle (SEA), with 19 nonstop departures a day between them.

What is the cheapest month to fly from Salt Lake City to Seattle?

Over the next six months, January 2027 has the lowest round-trip fares from Salt Lake City (SLC) to Seattle (SEA), starting at $64 per traveler including taxes and fees. Within any month, Tuesday departures average the lowest prices.

How far in advance should I book Salt Lake City to Seattle flights?

Fares on this route are usually lowest 4 to 8 weeks before departure and rise sharply inside two weeks. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.

What is the time difference between Salt Lake City and Seattle?

Seattle is 1 hour behind Salt Lake City. SLC is on America/Denver time and SEA on America/Los Angeles time. Departure and arrival times in search results are always shown in local time at each airport.

Related routes

Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.

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