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

Return flights

02 Jun - 09 Jun	United	direct
03 Jun - 06 Jun	United
09 Jun - 16 Jun	United
30 Jun - 08 Jul	United
09 Jun - 14 Jun	United
02 Jun - 06 Jun	United
04 Jun - 07 Jun	United
10 Jun - 15 Jun	United
27 Jun - 01 Jul	United	direct
11 Jun - 15 Jun	United	direct
06 Jun - 11 Jun	United	direct
12 Jun - 21 Jun	United
26 Jun - 01 Jul	United
27 Jun - 05 Jul	United	direct
25 Jun - 05 Jul	United	direct

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 206€

Return flights