Cheapest return flights from Seattle to San Juan in November from 266€

AirHint found the following cheapest return flights from Seattle (SEA) to San Juan (SJU) in November 2025 (see full year).

Return flights

17 Nov - 21 Nov Frontier Airlines
17 Nov - 25 Nov Frontier Airlines
08 Nov - 12 Nov Alaska Airlines
16 Nov - 25 Nov Frontier Airlines
17 Nov - 24 Nov Frontier Airlines
06 Nov - 11 Nov Frontier Airlines
28 Nov - 03 Dec Frontier Airlines
06 Nov - 10 Nov Frontier Airlines
07 Nov - 11 Nov Frontier Airlines
04 Nov - 19 Nov United
20 Nov - 30 Nov Frontier Airlines
27 Nov - 01 Dec Alaska Airlines

Also check the deals for one-way flights from Seattle to San Juan in November.

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