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

Return flights

28 Jun - 02 Jul	United	direct
11 Jun - 16 Jun	United	direct
11 Jun - 17 Jun	United	direct
10 Jun - 15 Jun	United	direct
11 Jun - 14 Jun	United	direct
12 Jun - 15 Jun	United	direct
24 Jun - 29 Jun	United
18 Jun - 25 Jun	United
05 Jun - 14 Jun	United
24 Jun - 28 Jun	United

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

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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Cheapest return flights from Washington to San Juan in June from $262

Return flights