Cheapest return flights from Washington to San Juan in August from 348€

Best time to book flights for Washington (IAD) to San Juan (SJU) flights at AirHint

AirHint found the following cheapest return flights from Washington (IAD) to San Juan (SJU) in August 2025 (see full year).

Return flights

20 Aug - 29 Aug United direct
25 Aug - 31 Aug United direct
13 Aug - 19 Aug United direct
01 Aug - 03 Aug United direct
09 Aug - 16 Aug United direct
22 Aug - 24 Aug United
01 Aug - 04 Aug Avelo Airlines
07 Aug - 12 Aug United direct
04 Aug - 10 Aug United direct
01 Aug - 04 Aug United direct
28 Aug - 01 Sep United

Also check the deals for one-way flights from Washington to San Juan in August.

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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