Cheapest return flights from Phoenix to San Diego in April from 39€

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

Return flights

06 Apr - 09 Apr Frontier Airlines direct
14 Apr - 18 Apr Frontier Airlines direct
23 Apr - 27 Apr Frontier Airlines direct
13 Apr - 24 Apr Frontier Airlines direct
12 Apr - 15 Apr Frontier Airlines direct
12 Apr - 16 Apr Frontier Airlines direct
06 Apr - 10 Apr Frontier Airlines direct
29 Apr - 04 May Frontier Airlines direct
07 Apr - 14 Apr Frontier Airlines direct
17 Apr - 19 Apr Frontier Airlines direct
03 Apr - 05 Apr Frontier Airlines direct

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

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