AirHint found the following cheapest return flights from Charlotte (CLT) to San Juan (SJU) in April 2026 (see full year).

Return flights

26 Apr - 13 May	Spirit Airlines
01 Apr - 04 Apr	Frontier Airlines
04 Apr - 11 Apr	Frontier Airlines
12 Apr - 19 Apr	Frontier Airlines
06 Apr - 14 Apr	Frontier Airlines
01 Apr - 01 Apr	Spirit Airlines
26 Apr - 17 May	Spirit Airlines
01 Apr - 14 Apr	Spirit Airlines
01 Apr - 19 Apr	Spirit Airlines
06 Apr - 24 Apr	Spirit Airlines
04 Apr - 24 Apr	Spirit Airlines
01 Apr - 11 Apr	Spirit Airlines

Also check the deals for one-way flights from Charlotte to San Juan in April.

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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Cheapest return flights from Charlotte to San Juan in April from 225€

Return flights