Cheapest return flights from San Francisco to San Juan in April from $298

Best time to book flights for San Francisco (SFO) to San Juan (SJU) flights at AirHint

AirHint found the following cheapest return flights from San Francisco (SFO) to San Juan (SJU) in April 2025 (see full year).

Return flights

11 Apr - 17 Apr Frontier Airlines
15 Apr - 18 Apr Frontier Airlines
28 Apr - 05 May Frontier Airlines
28 Apr - 02 May Frontier Airlines
14 Apr - 21 Apr Frontier Airlines
15 Apr - 22 Apr Frontier Airlines
15 Apr - 20 Apr Frontier Airlines
14 Apr - 19 Apr Frontier Airlines
12 Apr - 20 Apr Frontier Airlines
13 Apr - 19 Apr Frontier Airlines
22 Apr - 28 Apr Frontier Airlines
09 Apr - 15 Apr Frontier Airlines
25 Apr - 03 May Frontier Airlines
30 Apr - 05 May Frontier Airlines
28 Apr - 04 May Frontier Airlines
26 Apr - 03 May Frontier Airlines
29 Apr - 03 May jetBlue
30 Apr - 06 May jetBlue
29 Apr - 27 May Frontier Airlines

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

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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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