Cheapest one-way flights from Washington to San Juan in August from 70€

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

One-Way flights

12 Aug United
05 Aug Frontier Airlines direct
16 Aug United
19 Aug Delta
16 Aug United direct
30 Aug Frontier Airlines direct
29 Aug Avelo Airlines
09 Aug Delta
09 Aug United direct
14 Aug Frontier Airlines

Also check the deals for return 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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