Direct (nonstop) flights from Salt Lake City to Seattle
3 airlines fly nonstop from Salt Lake City International (SLC) to Seattle Tacoma International (SEA). It's 688 miles (1,107 km), about 2h 20m in the air. Operated by Alaska Airlines, Delta Air Lines, Frontier Airlines.
Alaska Airlines
Delta Air Lines
Frontier Airlines
Route data last updated: May 30, 2026
Airlines with non-stop flights
AS
Alaska Airlines
DL
Delta Air Lines
F9
Frontier Airlines
Alternative Routes
Other ways to fly from Salt Lake City to Seattle with one stop · direct emits 127 kg CO₂ per passenger
Looking for the return flight?
SEA → SLC: Flights from Seattle to Salt Lake CityOther direct flights from Salt Lake City
Direct flights from Seattle (SEA)
Frequently Asked Questions
How long is the direct flight from Salt Lake City to Seattle?
A nonstop flight from Salt Lake City (SLC) to Seattle (SEA) takes approximately 2 hours and 20 minutes. The distance is 688 miles (1,107 km).
Which airlines fly nonstop from Salt Lake City to Seattle?
3 airlines: Alaska Airlines, Delta Air Lines, Frontier Airlines.
Is there a nonstop flight from Salt Lake City to Seattle?
Yes. 3 airlines: Alaska Airlines, Delta Air Lines, Frontier Airlines.
How far is Salt Lake City from Seattle?
The flight distance from Salt Lake City to Seattle is 688 miles (1,107 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as the length of Italy.
What type of aircraft flies from Salt Lake City to Seattle?
At 2h 20m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Salt Lake City to Seattle?
Roughly 127 kg CO2 per passenger one-way. That's about the same as driving 635 km.
Is the return flight from Seattle to Salt Lake City also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Salt Lake City to Seattle?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Salt Lake City International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.