AirHint found the following cheapest one-way flights from Washington (IAD) to San Jose (SJO) in April 2026 (see full year).
One-Way flights
| 01 Apr | United | ||
| 07 Apr | American Airlines | ||
| 06 Apr | Copa | ||
| 03 Apr | Copa |
Also check the deals for return flights from Washington to San Jose in April.
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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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