Cheapest return flights from Montreal to San Juan in December from $298
AirHint found the following cheapest return flights from Montreal (YUL) to San Juan (SJU)
in December 2025 (see full year ).
Return flights
13 Dec
- 21 Dec
WestJet
$ 298
05 Dec
- 14 Dec
Porter Airlines (Canada) Ltd
$ 319
07 Dec
- 14 Dec
Porter Airlines (Canada) Ltd
$ 331
03 Dec
- 07 Dec
Porter Airlines (Canada) Ltd
$ 343
05 Dec
- 12 Dec
Porter Airlines (Canada) Ltd
$ 357
06 Dec
- 13 Dec
United
$ 365
02 Dec
- 09 Dec
United
$ 368
14 Dec
- 21 Dec
Porter Airlines (Canada) Ltd
$ 386
13 Dec
- 20 Dec
WestJet
$ 386
01 Dec
- 08 Dec
Porter Airlines (Canada) Ltd
$ 389
28 Dec
- 11 Jan
Porter Airlines (Canada) Ltd
$ 552
31 Dec
- 07 Jan
Porter Airlines (Canada) Ltd
$ 588
30 Dec
- 06 Jan
Porter Airlines (Canada) Ltd
$ 618
26 Dec
- 09 Jan
Porter Airlines (Canada) Ltd
$ 660
31 Dec
- 05 Jan
Air Transat
$ 691
29 Dec
- 05 Jan
WestJet
$ 712
28 Dec
- 05 Jan
Porter Airlines (Canada) Ltd
$ 780
26 Dec
- 06 Jan
Porter Airlines (Canada) Ltd
$ 782
28 Dec
- 11 Jan
Air Transat
$ 805
direct
23 Dec
- 04 Jan
WestJet
$ 816
Also check the deals for one-way flights from Montreal to San Juan in December .
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