Cheapest one-way flights from Phoenix to Seattle in February from $19

AirHint found the following cheapest one-way flights from Phoenix (PHX) to Seattle (SEA) in February 2026 (see full year).

One-Way flights

26 Feb Frontier Airlines direct
19 Feb Frontier Airlines direct
14 Feb Frontier Airlines direct
15 Feb Frontier Airlines direct
03 Feb Hawaiian Airlines direct
07 Feb Southwest Airlines direct
10 Feb Alaska Airlines direct
25 Feb Alaska Airlines direct
24 Feb Alaska Airlines direct
02 Feb Delta direct

Also check the deals for return flights from Phoenix to Seattle in February.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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