Cheapest return flights from Raleigh-durham to San Juan in May from $223

Best time to book flights for Raleigh-durham (RDU) to San Juan (SJU) flights at AirHint

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

Return flights

10 May - 17 May Frontier Airlines direct
09 May - 12 May Frontier Airlines
12 May - 16 May Frontier Airlines direct
10 May - 12 May Frontier Airlines direct
10 May - 13 May Frontier Airlines
02 May - 07 May Frontier Airlines
16 May - 24 May Frontier Airlines direct
30 May - 02 Jun Frontier Airlines direct
03 May - 05 May Frontier Airlines direct
09 May - 12 May Frontier Airlines direct
16 May - 19 May Frontier Airlines direct
28 May - 01 Jun Frontier Airlines direct

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

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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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