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

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

One-Way flights

23 Mar Frontier Airlines direct
03 Mar Frontier Airlines direct
17 Mar Southwest Airlines direct
20 Mar Frontier Airlines direct
10 Mar Frontier Airlines direct
26 Mar Southwest Airlines direct
14 Mar Frontier Airlines direct
04 Mar Frontier Airlines
09 Mar Frontier Airlines direct
22 Mar Allegiant Air

Also check the deals for return flights from Phoenix to San Diego in March.

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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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