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

Return flights

09 Apr - 13 Apr	Frontier Airlines
07 Apr - 11 Apr	Frontier Airlines
11 Apr - 19 Apr	Frontier Airlines
21 Apr - 08 May	Spirit Airlines
01 Apr - 22 Apr	Spirit Airlines
08 Apr - 29 Apr	Spirit Airlines
08 Apr - 22 Apr	Spirit Airlines
21 Apr - 29 Apr	Spirit Airlines
07 Apr - 22 Apr	Spirit Airlines
21 Apr - 24 Apr	jetBlue
21 Apr - 22 Apr	Spirit Airlines
20 Apr - 08 May	Spirit Airlines
17 Apr - 08 May	Spirit Airlines

Also check the deals for one-way flights from Houston 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 Houston to San Juan in April from $178

Return flights