Cheapest one-way flights from Washington to San Jose in March from $105

AirHint found the following cheapest one-way flights from Washington (IAD) to San Jose (SJO) in March 2026 (see full year).

One-Way flights

03 Mar Volaris El Salvador
10 Mar Volaris El Salvador
08 Mar Volaris El Salvador
05 Mar Volaris El Salvador
02 Mar United
09 Mar Avianca
16 Mar Avianca
24 Mar Avianca
18 Mar Avianca
11 Mar Avianca

Also check the deals for return flights from Washington to San Jose in March.

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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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