Cheapest return RDU–SJU flights, May

AirHint found the following cheapest return flights from Raleigh-durham (RDU) to San Juan (SJU) in May 2026 (see full year).

Return flights

18 May - 21 May Frontier Airlines
30 May - 04 Jun Frontier Airlines
26 May - 30 May Frontier Airlines
26 May - 28 May Frontier Airlines
17 May - 24 May Frontier Airlines
30 May - 11 Jun Frontier Airlines
19 May - 24 May Frontier Airlines
18 May - 24 May Frontier Airlines
28 May - 04 Jun Frontier Airlines
26 May - 01 Jun Frontier Airlines
18 May - 22 May Frontier Airlines
10 May - 14 May Frontier Airlines
14 May - 21 May Frontier Airlines direct
22 May - 28 May Frontier Airlines
07 May - 07 Jun Frontier Airlines
28 May - 04 Jun Frontier Airlines direct
07 May - 07 Jun Frontier Airlines direct
28 May - 01 Jun Breeze Airways
25 May - 01 Jun Breeze Airways

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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