Cheapest return flights from Denver to San Juan in June from 279€

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

Return flights

02 Jun - 08 Jun Frontier Airlines
03 Jun - 08 Jun Frontier Airlines
03 Jun - 09 Jun Frontier Airlines
04 Jun - 08 Jun Frontier Airlines
21 Jun - 24 Jun Frontier Airlines
04 Jun - 09 Jun Frontier Airlines
18 Jun - 22 Jun Frontier Airlines
22 Jun - 29 Jun Southwest Airlines
13 Jun - 19 Jun Frontier Airlines
12 Jun - 19 Jun Frontier Airlines
25 Jun - 06 Jul Frontier Airlines
25 Jun - 06 Jul United direct

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

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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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