Cheap Flights from SEA to SLC: When to Fly from Seattle to Salt Lake City

The cheapest times to fly from SEA to SLC are

• January 8th to February 11th
• May 21st to June 17th (except the week of June 4th)
• August 6th to November 18th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SEA to SLC is mid to late September. Prices can be as high as $356 for Sunday flights during mid December, or as low as $197 for Tuesday flights around mid to late September.

When to Fly to Salt Lake City

Flying from Seattle, WA (SEA) to Salt Lake City, UT (SLC) will usually cost between $204 to $300 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late September with an average ticket price of $206. Due to high demand the most expensive time to fly is mid December, with an average price of $297. Planning your trip to low-cost times can easily save you $91 on economy flights and even more on first-class flights. Generally, any price below $253 can be considered a good price for a round-trip SEA to SLC flight.

See below for a graph of average weekly prices for the SEA to SLC route. All prices are for round-trip tickets in USD.

Compared to other flights, the SEA to SLC flight is much cheaper than the average and costs much less than the average flight leaving from Seattle. The average price per mile (for a direct flight) is $0.23, which is below average.

Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $51 (19%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $216. Return trip prices are from the SLC to SEA flight, and often highlight the quality of our data in showing the same trend.

Nonstop Flights and Layovers

Travelers looking to fly from SEA to SLC can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 2 hour 13 minutes may be realistic.

Flight Questions Answered

Still have questions about flying from SEA to SLC? We’ve got answers.

Which airlines fly this route?

You can find 11 major airlines flying this route most often: Alaska, American, China Eastern, Delta, Emirates, Fiji Airways, Frontier, JetBlue, Singapore Airlines, Southwest, United, and potentially more during busy seasons.

How far away is it from Salt Lake City International Airport to Seattle/Tacoma International Airport?

The distance between the two airports is roughly 688 miles or 1107 kilometers.

How long does it take to fly from SEA to SLC?

The real-world flight time for a nonstop SEA to SLC flight is about 2 hour 13 minutes.

How many flights go between Seattle, WA and Salt Lake City, UT?

It depends on the day of the week and the date, but a typical day might have around 63 available flights from SEA to SLC.

Airport Location Info

Late and Early Flight Data

Flights from SEA to SLC tend to depart late far less frequently than the average flight. According to our recently updated data, 16% of flights departed 5 or more minutes late, and 22% of flights left 5 or more minutes early. On average you can expect to leave SLC heading for SEA about 2 minutes late. This does not significantly impact arrival time, as the average landing time in Salt Lake City, UT is about 4 minutes early. The numbers below show a recent average of take-off times versus the scheduled departure flight:

• Delta: 3 minutes late
• SkyWest: 2 minutes late
• Alaska: 2 minutes late
• Some airlines not reporting

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.