Cheapest return flights from Ontario to San Juan in January from 336€
AirHint found the following cheapest return flights from Ontario (ONT) to San Juan (SJU)
in January 2026 (see full year ).
Return flights
26 Jan
- 31 Jan
Southwest Airlines
336 €
29 Jan
- 06 Feb
Southwest Airlines
345 €
13 Jan
- 20 Jan
Southwest Airlines
369 €
25 Jan
- 01 Feb
Southwest Airlines
379 €
31 Jan
- 11 Feb
Southwest Airlines
379 €
20 Jan
- 26 Jan
Southwest Airlines
405 €
06 Jan
- 06 Feb
Southwest Airlines
405 €
23 Jan
- 25 Jan
Southwest Airlines
419 €
12 Jan
- 17 Jan
Southwest Airlines
419 €
18 Jan
- 25 Jan
Southwest Airlines
420 €
18 Jan
- 01 Feb
Southwest Airlines
432 €
22 Jan
- 26 Jan
Southwest Airlines
444 €
11 Jan
- 25 Jan
Southwest Airlines
456 €
05 Jan
- 12 Jan
Southwest Airlines
588 €
02 Jan
- 09 Jan
Southwest Airlines
624 €
25 Jan
- 08 Feb
Southwest Airlines
635 €
Also check the deals for one-way flights from Ontario to San Juan in January .
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