Cheapest return flights from Denver to San Juan in July from $417

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

Return flights

10 Jul - 15 Jul jetBlue
14 Jul - 08 Aug jetBlue
13 Jul - 21 Jul jetBlue
08 Jul - 15 Jul United direct
14 Jul - 23 Jul United direct
09 Jul - 13 Jul jetBlue
23 Jul - 27 Jul Southwest Airlines
09 Jul - 27 Jul Southwest Airlines
02 Jul - 27 Jul Southwest Airlines
26 Jul - 01 Aug Frontier Airlines

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

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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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