Cheapest return BUF–SJU flights, June

AirHint found the following cheapest return flights from Buffalo (BUF) to San Juan (SJU) in June 2026 (see full year).

Return flights

05 Jun - 08 Jun Frontier Airlines
01 Jun - 12 Jun Frontier Airlines
06 Jun - 13 Jun Frontier Airlines
08 Jun - 13 Jun Frontier Airlines
18 Jun - 26 Jun Frontier Airlines
19 Jun - 22 Jun Frontier Airlines
20 Jun - 23 Jun Frontier Airlines
19 Jun - 27 Jun Frontier Airlines
11 Jun - 15 Jun Frontier Airlines
22 Jun - 15 Jul jetBlue
27 Jun - 08 Jul Southwest Airlines

Also check the deals for one-way flights from Buffalo to San Juan in June.

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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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