Cheapest return flights from Ontario to San Juan in November from $387
AirHint found the following cheapest return flights from Ontario (ONT) to San Juan (SJU)
in November 2025 (see full year ).
Return flights
05 Nov
- 19 Nov
Frontier Airlines
$ 387
15 Nov
- 04 Dec
Southwest Airlines
$ 401
14 Nov
- 16 Nov
Frontier Airlines
$ 414
28 Nov
- 06 Dec
Frontier Airlines
$ 429
17 Nov
- 25 Nov
Southwest Airlines
$ 482
30 Nov
- 14 Dec
Southwest Airlines
$ 487
08 Nov
- 18 Nov
Southwest Airlines
$ 505
19 Nov
- 26 Nov
Southwest Airlines
$ 528
19 Nov
- 25 Nov
Southwest Airlines
$ 529
21 Nov
- 28 Nov
Frontier Airlines
$ 534
07 Nov
- 09 Nov
Southwest Airlines
$ 585
01 Nov
- 06 Nov
Southwest Airlines
$ 629
25 Nov
- 03 Dec
Southwest Airlines
$ 631
28 Nov
- 03 Dec
Southwest Airlines
$ 643
02 Nov
- 16 Nov
Southwest Airlines
$ 655
Also check the deals for one-way flights from Ontario to San Juan in November .
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