Cheapest return flights from Washington to San Juan in October from 197€

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

Return flights

28 Oct - 30 Oct Frontier Airlines
26 Oct - 01 Nov Frontier Airlines
28 Oct - 03 Nov Frontier Airlines
30 Oct - 04 Nov Frontier Airlines
30 Oct - 04 Nov United direct
28 Oct - 30 Oct United direct
29 Oct - 05 Nov Frontier Airlines
29 Oct - 27 Nov Frontier Airlines
23 Oct - 26 Oct Frontier Airlines direct
29 Oct - 02 Nov Frontier Airlines
29 Oct - 27 Nov United direct
28 Oct - 02 Nov Frontier Airlines
31 Oct - 04 Nov United direct
23 Oct - 28 Oct Frontier Airlines
24 Oct - 26 Oct Frontier Airlines
23 Oct - 27 Oct Frontier Airlines
23 Oct - 28 Oct United direct
24 Oct - 27 Oct United direct
23 Oct - 27 Oct United direct
24 Oct - 26 Oct United direct

Also check the deals for one-way flights from Washington to San Juan in October.

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