Cheapest return flights from Las Vegas to San Juan in September from 241€

AirHint found the following cheapest return flights from Las Vegas (LAS) to San Juan (SJU) in September 2025 (see full year).

Return flights

30 Sep - 04 Oct Frontier Airlines
26 Sep - 03 Oct Frontier Airlines
28 Sep - 03 Oct Spirit Airlines
28 Sep - 18 Oct Spirit Airlines
27 Sep - 03 Oct Spirit Airlines
22 Sep - 30 Sep Frontier Airlines
27 Sep - 18 Oct Spirit Airlines
25 Sep - 03 Oct Spirit Airlines
29 Sep - 02 Oct Spirit Airlines
26 Sep - 02 Oct Spirit Airlines
28 Sep - 02 Oct Spirit Airlines
19 Sep - 21 Sep Frontier Airlines
17 Sep - 22 Sep Frontier Airlines
17 Sep - 25 Sep Frontier Airlines
20 Sep - 27 Sep Frontier Airlines
20 Sep - 22 Sep Spirit Airlines
18 Sep - 21 Sep Frontier Airlines
25 Sep - 26 Sep Spirit Airlines
20 Sep - 21 Sep Frontier Airlines
19 Sep - 22 Sep Spirit Airlines

Also check the deals for one-way flights from Las Vegas 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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