Cheapest one-way flights from Washington to San Juan in October from 88€

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

One-Way flights

16 Oct Frontier Airlines
23 Oct Frontier Airlines
23 Oct Frontier Airlines direct
12 Oct Frontier Airlines direct
19 Oct Frontier Airlines direct
16 Oct Frontier Airlines direct
11 Oct Frontier Airlines
06 Oct Frontier Airlines
03 Oct Frontier Airlines
06 Oct United direct

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

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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