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Cheapest one-way flights from Washington (IAD) to San Jose (SJO), October

Select a price to book. see full year.

Dates, airline, and price
Dates	Airline	Price
01 Oct	United
02 Oct	United
07 Oct	United
06 Oct	United
31 Oct	United Direct Flight
04 Oct	United
03 Oct	United
17 Oct	Copa
18 Oct	Copa
20 Oct	Copa

deals for return flights from Washington to San Jose in October.

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Updated Jul 13, 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 Washington (IAD) to San Jose (SJO), October

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