Cheapest return flights from Montreal to San Juan in December from 254€

AirHint found the following cheapest return flights from Montreal (YUL) to San Juan (SJU) in December 2025 (see full year).

Return flights

09 Dec - 17 Dec United
09 Dec - 16 Dec United
02 Dec - 09 Dec United
10 Dec - 17 Dec United
06 Dec - 13 Dec United
04 Dec - 11 Dec United
05 Dec - 12 Dec Air Canada
08 Dec - 15 Dec United
14 Dec - 21 Dec Air Transat
09 Dec - 22 Dec United
31 Dec - 11 Jan WestJet
28 Dec - 04 Jan Air Transat
29 Dec - 05 Jan WestJet
26 Dec - 02 Jan WestJet
25 Dec - 01 Jan WestJet
28 Dec - 04 Jan Air Transat direct

Also check the deals for one-way flights from Montreal to San Juan in December.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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