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Cheapest one-way flights from Seattle (SEA) to San Juan (SJU), October

Select a price to book. see full year.

Dates, airline, and price
Dates	Airline	Price
25 Oct	Frontier Airlines
06 Oct	United
12 Oct	United
13 Oct	United
23 Oct	United
24 Oct	United
26 Oct	United
31 Oct	United
17 Oct	United
22 Oct	United

deals for return flights from Seattle to San Juan in October.

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Updated Jul 19, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Seattle (SEA) to San Juan (SJU), October

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