Cheapest one-way flights from Denver to San Diego in March from $29

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

One-Way flights

01 Mar Frontier Airlines direct
05 Mar Alaska Airlines direct
08 Mar Alaska Airlines direct
02 Mar Alaska Airlines direct
16 Mar Southwest Airlines direct
18 Mar Frontier Airlines direct
15 Mar Frontier Airlines direct
14 Mar Alaska Airlines direct

Also check the deals for return flights from Denver 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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