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

09 Sep - 23 Sep Frontier Airlines direct
16 Sep - 23 Sep Frontier Airlines direct
10 Sep - 16 Sep Frontier Airlines direct
01 Sep - 16 Sep Frontier Airlines direct
09 Sep - 15 Sep Frontier Airlines direct
24 Sep - 26 Sep Frontier Airlines direct
05 Sep - 06 Sep Frontier Airlines direct
29 Sep - 30 Sep Delta direct
11 Sep - 13 Sep Frontier Airlines direct
11 Sep - 18 Sep Frontier 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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