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

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
23 Jul United
26 Jul United
31 Jul Breeze Airways
21 Jul Frontier Airlines
24 Jul Frontier Airlines
27 Jul Copa
29 Jul Copa
14 Jul United
15 Jul United
20 Jul Aeromexico
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deals for return flights from Washington to San Jose in July.

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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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