Cheapest return flights from Seattle to Phoenix in August from 72€

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

Return flights

06 Aug - 09 Aug Frontier Airlines direct
02 Aug - 04 Aug Frontier Airlines direct
01 Aug - 08 Aug Frontier Airlines direct
14 Aug - 15 Aug Frontier Airlines direct
16 Aug - 23 Aug Frontier Airlines
01 Aug - 04 Aug Frontier Airlines direct
18 Aug - 22 Aug Frontier Airlines
13 Aug - 16 Aug Frontier Airlines direct
02 Aug - 03 Aug Frontier Airlines direct
22 Aug - 25 Aug Frontier Airlines direct
28 Aug - 04 Sep Frontier Airlines direct
28 Aug - 01 Sep Frontier Airlines direct

Also check the deals for one-way 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.

Book a cheap hotel in Phoenix

Cheap car rent in Phoenix

Feel free to contact us with any feedback or request another flight research.