Cheapest one-way flights from Seattle to Phoenix in August from 59€

AirHint found the following cheapest one-way flights from Seattle (SEA) to Phoenix (PHX) in August 2025 (see full year).

One-Way flights

06 Aug Frontier Airlines direct
09 Aug Frontier Airlines direct
14 Aug Frontier Airlines direct
28 Aug Frontier Airlines direct
29 Aug Frontier Airlines direct
07 Aug Frontier Airlines direct
04 Aug Frontier Airlines direct
16 Aug Frontier Airlines direct
02 Aug Frontier Airlines direct
21 Aug Frontier Airlines direct

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

Skyscanner

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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