Salt Lake City to Seattle SLC → SEA
Salt Lake City International Airport (SLC) → Seattle-Tacoma International Airport (SEA)
The cheapest one-way found recently is $136 with Frontier Airlines, 27 Oct, found 2 days ago.
One-way
The cheapest one-way fare on each of 3 departure dates is usually $150 to $179.
Cheapest one-way found recently
$136
27 Oct · Frontier Airlines
Salt Lake City International Airport (SLC) → Seattle-Tacoma International Airport (SEA)
Leaves 4:16 p.m. · 23 h 56 min trip
1 stop
found 2 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$136 27 Octfound 2 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 16 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $100 to $194.
16 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 27 Oct to 1 Jan 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 27 Oct to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 27 Oct | $136 | Frontier Airlines | Salt Lake City International Airport (SLC) → Seattle-Tacoma International Airport (SEA) | 1 stop | found 2 days ago | Open this trip |
| 26 Dec | $194 | Frontier Airlines | Salt Lake City International Airport (SLC) → Seattle-Tacoma International Airport (SEA) | 1 stop | found 6 days ago | Open this trip |
| 1 Jan 2027 | $164 | Frontier Airlines | Salt Lake City International Airport (SLC) → Seattle-Tacoma International Airport (SEA) | 1 stop | found 3 days ago | Open this trip |
Which month looks cheapest?
October 2026 is the cheapest month — from $136.
Airlines on the cheapest dates: Frontier Airlines.
Premium cabin fares from Salt Lake City to Seattle
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 27 Oct in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Salt Lake City to Seattle?
One-way
Fares 14 to 29 days before departure were typically 53% lower than 7 to 13 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (16 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 7–13 days | $211 | $136 | +111% | 7 |
| 14–29 days | $100 | $100 | Cheapest seen | 8 |
| 30–59 days | $190 | $190 | +90% | 7 |
Live price for these dates
The cheapest one-way found recently is for 27 Oct. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work