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
363 €
30 Apr
- 03 May
Southwest Airlines
383 €
14 Apr
- 19 Apr
Southwest Airlines
386 €
21 Apr
- 30 Apr
Southwest Airlines
390 €
01 Apr
- 15 Apr
Southwest Airlines
390 €
23 Apr
- 04 May
Southwest Airlines
390 €
22 Apr
- 06 May
Southwest Airlines
390 €
23 Apr
- 27 Apr
Southwest Airlines
397 €
13 Apr
- 19 Apr
Southwest Airlines
405 €
02 Apr
- 09 Apr
Southwest Airlines
407 €
18 Apr
- 25 Apr
Southwest Airlines
432 €
01 Apr
- 03 Apr
Southwest Airlines
436 €
01 Apr
- 08 Apr
Southwest Airlines
436 €
Also check the deals for one-way flights from Ontario to San Juan in April .
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