Cheapest return flights from Denver to San Diego in April from $57

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

Return flights

11 Apr - 12 Apr Frontier Airlines direct
02 Apr - 05 Apr Frontier Airlines direct
10 Apr - 13 Apr Frontier Airlines direct
09 Apr - 12 Apr Frontier Airlines direct
17 Apr - 19 Apr Hawaiian Airlines direct
16 Apr - 21 Apr Hawaiian Airlines direct
29 Apr - 05 May Alaska Airlines direct
29 Apr - 04 May Alaska Airlines direct
22 Apr - 29 Apr Alaska Airlines direct
25 Apr - 28 Apr Alaska Airlines direct
24 Apr - 01 May United direct
26 Apr - 03 May United direct
24 Apr - 26 Apr Alaska Airlines direct
23 Apr - 26 Apr Alaska Airlines direct

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

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