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

One-Way flights

16 Nov	Frontier Airlines	direct
13 Nov	Frontier Airlines	direct
06 Nov	Frontier Airlines	direct
02 Nov	Frontier Airlines	direct
09 Nov	Frontier Airlines	direct
14 Nov	Frontier Airlines
22 Nov	Avelo Airlines
28 Nov	Frontier Airlines	direct
22 Nov	Frontier Airlines	direct
21 Nov	Frontier Airlines	direct

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

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

Cheapest one-way flights from Washington to San Juan in November from $80

One-Way flights