Cheapest return flights from Phoenix to San Diego in May from $38

Best time to book flights for Phoenix (PHX) to San Diego (SAN) flights at AirHint

AirHint found the following cheapest return flights from Phoenix (PHX) to San Diego (SAN) in May 2025 (see full year).

Return flights

01 May - 05 May Frontier Airlines direct
14 May - 20 May Frontier Airlines direct
02 May - 06 May Frontier Airlines direct
03 May - 05 May Frontier Airlines direct
12 May - 17 May Frontier Airlines direct
01 May - 04 May Frontier Airlines direct
02 May - 04 May Frontier Airlines direct
04 May - 10 May Frontier Airlines direct
15 May - 18 May Frontier Airlines direct
23 May - 26 May Frontier Airlines direct
30 May - 02 Jun Frontier Airlines direct

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

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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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