Cheapest return flights from Phoenix to San Diego in March from $37

AirHint found the following cheapest return flights from Phoenix (PHX) to San Diego (SAN) in March 2026 (see full year).

Return flights

09 Mar - 12 Mar Frontier Airlines direct
05 Mar - 12 Mar Frontier Airlines direct
07 Mar - 11 Mar Frontier Airlines direct
06 Mar - 10 Mar Frontier Airlines direct
07 Mar - 10 Mar Frontier Airlines direct
06 Mar - 11 Mar Frontier Airlines direct
10 Mar - 16 Mar Frontier Airlines direct
23 Mar - 25 Mar Frontier Airlines direct
20 Mar - 23 Mar Frontier Airlines direct
12 Mar - 15 Mar Frontier Airlines direct
24 Mar - 14 Apr Frontier Airlines direct

Also check the deals for one-way flights from Phoenix to San Diego in March.

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