Cheapest return flights from Denver to San Juan in July from $370

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 July 2025 (see full year).

Return flights

22 Jul - 29 Jul jetBlue
03 Jul - 11 Jul jetBlue
17 Jul - 24 Jul jetBlue
11 Jul - 14 Jul jetBlue
14 Jul - 22 Jul jetBlue
19 Jul - 27 Jul Allegiant Air
02 Jul - 07 Jul jetBlue
24 Jul - 28 Jul jetBlue
10 Jul - 14 Jul jetBlue
15 Jul - 22 Jul jetBlue
22 Jul - 05 Aug United
21 Jul - 04 Aug United
23 Jul - 06 Aug United
18 Jul - 01 Aug United
24 Jul - 07 Aug United direct
30 Jul - 13 Aug United
31 Jul - 14 Aug United
20 Jul - 03 Aug United direct
26 Jul - 09 Aug United
25 Jul - 08 Aug United

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

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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