Cheapest return flights from San Diego to Denver in March from $37

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

Return flights

09 Mar - 11 Mar Frontier Airlines direct
07 Mar - 08 Mar Frontier Airlines direct
06 Mar - 08 Mar Frontier Airlines direct
07 Mar - 07 Mar Frontier Airlines direct
06 Mar - 07 Mar Frontier Airlines direct
17 Mar - 23 Mar Frontier Airlines direct
07 Mar - 20 Mar Frontier Airlines direct
06 Mar - 11 Mar Frontier Airlines direct
18 Mar - 22 Mar Frontier Airlines direct
03 Mar - 08 Mar Frontier Airlines
27 Mar - 05 Apr Frontier Airlines direct

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

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