Southwest AirlinesDepart12:20
Mon, Dec 14SLC → SEA
4h 35m · 1 stop
$98one way, per person
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- Cheapest fare
- $98
- Cheapest month
- December
- Direct flights
- Not recently
- Quickest trip
- 4h 35m
Southwest Airlines · Mon, Dec 14
from $98
Usually 1+ stop
1,130 km
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Cheapest month to fly from Salt Lake City to Seattle
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in December 2026
The lowest fares we've seen for each day, cheapest first.
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Where to stay, what to do and getting around, from our travel partners.
About flights from Salt Lake City to Seattle
Salt Lake City (SLC) and Seattle (SEA) are about 1,130 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 4h 35m. Over the next few months, one-way fares start from $98, and December 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Salt Lake City to Seattle?
The cheapest one-way fare we've seen recently is $98 with Southwest Airlines, departing Monday, December 14, 2026. Over the coming months, the lowest fare in each month ranges from $98 to $141.
What is the cheapest month to fly from Salt Lake City to Seattle?
December 2026 currently has the lowest fares, from $98 one way.
Are there direct flights from Salt Lake City to Seattle?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Salt Lake City to Seattle?
The quickest journey we've seen takes about 4h 35m. Salt Lake City and Seattle are around 1,130 km apart.
Which airlines fly from Salt Lake City to Seattle?
Recent fares on this route were with Frontier Airlines and Southwest Airlines.
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