AirHint found the following cheapest return flights from Seattle (SEA) to Salt Lake City (SLC) in January 2026 (see full year).
Return flights
| 22 Jan - 26 Jan | Frontier Airlines | ||
| 07 Jan - 11 Jan | Alaska Airlines | direct | |
| 15 Jan - 18 Jan | Delta | direct | |
| 22 Jan - 26 Jan | Delta | direct | |
| 23 Jan - 25 Jan | Delta | direct |
Also check the deals for one-way flights from Seattle to Salt Lake City in January.
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