San José (SJO) to Washington (IAD) cheap flight deal from $258 USD in economy class

CMCopa Airlines

Round Trip•Economy

SJO

Juan Santamaría International Airport (SJO)

San José, Costa Rica

IAD

Washington Dulles International Airport

Washington, United States

$446 USD

-42%$258 USD

Verified 1 day ago

September 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1$363 2$308 3$332 4$332 5$360 6$413 7$413 8$332 9$316 10$307 11$332 12$413 13$392 14$392 15$303 16$319 17$275 18$303 19$295 20$287 21$303 22$328 23$303 24$259 25$303 26$287 27$332 28$332 29$324 30$287 1$259 2$287 3$287 4$287 5$279

Extremely Rare Availability

4% of dates checked are available within 10% of the lowest price

Tuesday, September 23rd, 2025

10 round-trip options

Returning

Sun, Sep 28, 2025•5 Day Trip

$316 USD

Google Flights

Returning

Mon, Sep 29, 2025•6 Day Trip

$303 USD

Google Flights

Returning

Tue, Sep 30, 2025•7 Day Trip

$316 USD

Google Flights

Returning

Wed, Oct 1, 2025•8 Day Trip

$303 USD

Google Flights

Returning

Thu, Oct 2, 2025•9 Day Trip

$332 USD

Google Flights

Returning

Fri, Oct 3, 2025•10 Day Trip

$332 USD

Google Flights

Returning

Sat, Oct 4, 2025•11 Day Trip

$303 USD

Google Flights

Returning

Sun, Oct 5, 2025•12 Day Trip

$332 USD

Google Flights

Returning

Mon, Oct 6, 2025•13 Day Trip

$303 USD

Google Flights

Returning

Tue, Oct 7, 2025•14 Day Trip

$303 USD

Google Flights