Cheapest return flights from Denver to San Diego in March from $38

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

Return flights

04 Mar - 07 Mar Frontier Airlines direct
06 Mar - 09 Mar Frontier Airlines direct
06 Mar - 07 Mar Frontier Airlines direct
04 Mar - 08 Mar Frontier Airlines direct
10 Mar - 14 Mar Frontier Airlines direct
10 Mar - 17 Mar Frontier Airlines direct
06 Mar - 08 Mar Frontier Airlines direct
07 Mar - 09 Mar Frontier Airlines direct
27 Mar - 30 Mar Frontier Airlines direct
27 Mar - 31 Mar Frontier Airlines direct
23 Mar - 02 Apr Frontier Airlines direct
27 Mar - 01 Apr Frontier Airlines direct
29 Mar - 02 Apr Frontier Airlines direct

Also check the deals for one-way flights from Denver to San Diego in March.

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