Cheapest one-way IAD–SJU flights, August

AirHint found the following cheapest one-way flights from Washington (IAD) to San Juan (SJU) in August 2026 (see full year).

One-Way flights

25 Aug Frontier Airlines
24 Aug Frontier Airlines
29 Aug Frontier Airlines
17 Aug Frontier Airlines
14 Aug Frontier Airlines
05 Aug Frontier Airlines
24 Aug United direct
13 Aug United direct
03 Aug United direct
25 Aug United direct

Also check the deals for return flights from Washington to San Juan in August.

Powered by

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan

Feel free to contact us with any feedback or request another flight research.