Cheapest return flights from Ontario to San Juan in April from 363€

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

Return flights

17 Apr - 22 Apr Southwest Airlines
30 Apr - 03 May Southwest Airlines
14 Apr - 19 Apr Southwest Airlines
21 Apr - 30 Apr Southwest Airlines
01 Apr - 15 Apr Southwest Airlines
23 Apr - 04 May Southwest Airlines
22 Apr - 06 May Southwest Airlines
23 Apr - 27 Apr Southwest Airlines
13 Apr - 19 Apr Southwest Airlines
02 Apr - 09 Apr Southwest Airlines
18 Apr - 25 Apr Southwest Airlines
01 Apr - 03 Apr Southwest Airlines
01 Apr - 08 Apr Southwest Airlines

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

Powered by

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan

Feel free to contact us with any feedback or request another flight research.