Cheapest return flights from Denver to San Juan in April from $271

Best time to book flights for Denver (DEN) to San Juan (SJU) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to San Juan (SJU) in April 2025 (see full year).

Return flights

26 Apr - 08 May Frontier Airlines
10 Apr - 24 Apr Frontier Airlines
20 Apr - 15 May Frontier Airlines
22 Apr - 26 Apr Frontier Airlines
24 Apr - 29 Apr Frontier Airlines
24 Apr - 30 Apr Frontier Airlines
28 Apr - 05 May Frontier Airlines
14 Apr - 19 Apr Frontier Airlines
23 Apr - 28 Apr Frontier Airlines
22 Apr - 25 Apr Frontier Airlines
15 Apr - 22 Apr Frontier Airlines
10 Apr - 15 Apr Frontier Airlines
21 Apr - 25 Apr Frontier Airlines
27 Apr - 05 May Frontier Airlines
28 Apr - 12 May United direct
29 Apr - 13 May United direct
28 Apr - 05 May United direct
23 Apr - 07 May United direct
24 Apr - 08 May United direct
30 Apr - 14 May United direct

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

Skyscanner

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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