Cheapest return flights from Denver to San Juan in April from 169€

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

Return flights

11 Apr - 18 Apr Frontier Airlines
11 Apr - 16 Apr Frontier Airlines
11 Apr - 21 Apr Frontier Airlines
13 Apr - 18 Apr Frontier Airlines
18 Apr - 22 Apr Frontier Airlines
09 Apr - 13 Apr Frontier Airlines
21 Apr - 02 May Frontier Airlines
21 Apr - 28 Apr Frontier Airlines
10 Apr - 18 Apr Frontier Airlines
11 Apr - 17 Apr Frontier Airlines
14 Apr - 17 Apr Frontier Airlines
30 Apr - 04 May United

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

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