Cheapest return flights from Ontario to San Juan in January from 243€
AirHint found the following cheapest return flights from Ontario (ONT) to San Juan (SJU)
in January 2026 (see full year ).
Return flights
17 Jan
- 21 Jan
United
243 €
18 Jan
- 23 Jan
United
267 €
20 Jan
- 13 Feb
Southwest Airlines
314 €
25 Jan
- 28 Jan
Southwest Airlines
318 €
20 Jan
- 27 Jan
Southwest Airlines
341 €
29 Jan
- 04 Feb
Southwest Airlines
347 €
16 Jan
- 04 Feb
Southwest Airlines
373 €
17 Jan
- 24 Jan
Southwest Airlines
394 €
18 Jan
- 01 Feb
Southwest Airlines
400 €
13 Jan
- 20 Jan
Southwest Airlines
414 €
08 Jan
- 14 Jan
Southwest Airlines
420 €
19 Jan
- 22 Jan
Southwest Airlines
420 €
18 Jan
- 25 Jan
Southwest Airlines
447 €
23 Jan
- 02 Feb
Southwest Airlines
448 €
15 Jan
- 20 Jan
Southwest Airlines
459 €
30 Jan
- 02 Feb
Southwest Airlines
494 €
25 Jan
- 08 Feb
Southwest Airlines
743 €
Also check the deals for one-way flights from Ontario to San Juan in January .
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