San José (SJO) to Washington (IAD) flight deal in economy from $342

Monday, August 31st, 2026

7 round-trip options

Returning
Sun, Sep 6, 20266 Day Trip
$450 USD
Returning
Mon, Sep 7, 20267 Day Trip
$540 USD
Returning
Tue, Sep 8, 20268 Day Trip
$466 USD
Returning
Thu, Sep 10, 202610 Day Trip
$509 USD
Returning
Fri, Sep 11, 202611 Day Trip
$450 USD
Returning
Sat, Sep 12, 202612 Day Trip
$450 USD
Returning
Sun, Sep 13, 202613 Day Trip
$450 USD