Cheapest return flights from Phoenix to Seattle in January from $58

AirHint found the following cheapest return flights from Phoenix (PHX) to Seattle (SEA) in January 2026 (see full year).

Return flights

16 Jan - 18 Jan Frontier Airlines direct
15 Jan - 18 Jan Frontier Airlines direct
10 Jan - 31 Jan Frontier Airlines direct
17 Jan - 19 Jan Frontier Airlines direct
16 Jan - 19 Jan Frontier Airlines direct
09 Jan - 12 Jan Frontier Airlines direct
21 Jan - 24 Jan Delta direct
23 Jan - 26 Jan Delta direct
23 Jan - 25 Jan Alaska Airlines direct
21 Jan - 25 Jan Alaska Airlines direct
27 Jan - 03 Feb Hawaiian Airlines direct
29 Jan - 02 Feb Alaska Airlines direct

Also check the deals for one-way flights from Phoenix to Seattle in January.

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