Cheapest return flights from Phoenix to Seattle in May from $163

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

Return flights

07 May - 14 May Alaska Airlines direct
29 May - 07 Jun Alaska Airlines direct
22 May - 30 May Alaska Airlines direct
21 May - 26 May Alaska Airlines direct
22 May - 25 May Alaska Airlines direct
29 May - 15 Jun Sun Country Airlines
22 May - 07 Jun Sun Country Airlines

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

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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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