Cheapest return MIA–SJU flights, May

AirHint found the following cheapest return flights from Miami (MIA) to San Juan (SJU) in May 2026 (see full year).

Return flights

23 May - 29 May Frontier Airlines direct
23 May - 30 May Frontier Airlines
19 May - 30 May Frontier Airlines direct
25 May - 29 May Frontier Airlines direct
19 May - 29 May Frontier Airlines direct
24 May - 30 May Frontier Airlines direct
18 May - 30 May Frontier Airlines direct
19 May - 21 May Frontier Airlines
19 May - 22 May Frontier Airlines
28 May - 29 May Frontier Airlines
28 May - 02 Jun Frontier Airlines
27 May - 03 Jun Frontier Airlines direct
27 May - 02 Jun Frontier Airlines direct
25 May - 01 Jun Frontier Airlines direct
25 May - 02 Jun Frontier Airlines direct
20 May - 03 Jun Frontier Airlines
29 May - 05 Jun Frontier Airlines
17 May - 01 Jun Frontier Airlines direct
29 May - 03 Jun Frontier Airlines direct
30 May - 02 Jun Frontier Airlines

Also check the deals for one-way flights from Miami 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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