Cheapest return LAX–PHX flights, September

AirHint found the following cheapest return flights from Los Angeles (LAX) to Phoenix (PHX) in September 2026 (see full year).

Return flights

04 Sep - 06 Sep Frontier Airlines direct
03 Sep - 06 Sep Frontier Airlines direct
15 Sep - 17 Sep Delta direct
22 Sep - 25 Sep Southwest Airlines direct
03 Sep - 07 Sep Frontier Airlines direct
24 Sep - 28 Sep Delta direct
25 Sep - 25 Sep Southwest Airlines direct
21 Sep - 27 Sep Southwest Airlines direct
11 Sep - 20 Sep Southwest Airlines direct

Also check the deals for one-way flights from Los Angeles to Phoenix in September.

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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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