Cheapest one-way flights from Phoenix to San Diego in May from 20€

AirHint found the following cheapest one-way flights from Phoenix (PHX) to San Diego (SAN) in May 2026 (see full year).

One-Way flights

19 May Frontier Airlines direct
06 May Frontier Airlines direct
30 May Frontier Airlines direct
15 May Frontier Airlines direct
26 May Frontier Airlines direct
28 May Frontier Airlines direct
27 May Frontier Airlines direct
29 May Frontier Airlines direct
31 May Frontier Airlines direct
24 May Frontier Airlines direct

Also check the deals for return 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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