Cheapest return flights from Montreal to San Juan in October from $349

AirHint found the following cheapest return flights from Montreal (YUL) to San Juan (SJU) in October 2026 (see full year).

Return flights

20 Oct - 27 Oct United
22 Oct - 29 Oct United
24 Oct - 31 Oct Air Canada
25 Oct - 01 Nov Air Canada
21 Oct - 28 Oct United
27 Oct - 03 Nov United
21 Oct - 26 Oct Delta
14 Oct - 21 Oct United
16 Oct - 23 Oct WestJet
17 Oct - 24 Oct WestJet
23 Oct - 30 Oct WestJet
06 Oct - 13 Oct United
31 Oct - 07 Nov Air Canada
30 Oct - 06 Nov WestJet
26 Oct - 02 Nov WestJet
29 Oct - 05 Nov WestJet

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

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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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