Cheapest one-way flights from Washington to San Juan in June from 107€

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

One-Way flights

24 Jun Frontier Airlines
23 Jun Frontier Airlines
25 Jun Frontier Airlines
12 Jun Frontier Airlines
14 Jun Frontier Airlines
21 Jun Frontier Airlines
19 Jun Frontier Airlines
17 Jun Frontier Airlines
11 Jun Frontier Airlines
14 Jun United direct

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

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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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