Cheapest return flights from Washington to San Juan in July from 231€

AirHint found the following cheapest return flights from Washington (IAD) to San Juan (SJU) in July 2026 (see full year).

Return flights

24 Jul - 28 Jul Frontier Airlines
24 Jul - 27 Jul Frontier Airlines
30 Jul - 06 Aug Frontier Airlines
08 Jul - 14 Jul Frontier Airlines
01 Jul - 09 Jul Frontier Airlines
03 Jul - 09 Jul Frontier Airlines
03 Jul - 14 Jul Frontier Airlines
10 Jul - 17 Jul Frontier Airlines
01 Jul - 11 Jul Frontier Airlines
03 Jul - 17 Jul Frontier Airlines
09 Jul - 16 Jul Frontier Airlines
29 Jul - 05 Aug Frontier Airlines
31 Jul - 03 Aug Frontier Airlines
29 Jul - 03 Aug Frontier Airlines
25 Jul - 02 Aug Frontier Airlines
30 Jul - 06 Aug United direct
29 Jul - 03 Aug United direct
30 Jul - 02 Aug United
29 Jul - 02 Aug Delta

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

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