Cheapest return flights from Raleigh-durham to San Juan in September from 220€

AirHint found the following cheapest return flights from Raleigh-durham (RDU) to San Juan (SJU) in September 2025 (see full year).

Return flights

16 Sep - 22 Sep Frontier Airlines
22 Sep - 25 Sep Frontier Airlines
15 Sep - 23 Sep Frontier Airlines
22 Sep - 27 Sep Frontier Airlines
13 Sep - 20 Sep Frontier Airlines
18 Sep - 21 Sep Frontier Airlines
05 Sep - 07 Sep Frontier Airlines
18 Sep - 22 Sep Frontier Airlines
11 Sep - 14 Sep Frontier Airlines
11 Sep - 15 Sep Frontier Airlines

Also check the deals for one-way flights from Raleigh-durham to San Juan in September.

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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