IAD to CUN from $354 in economy – flightdeals.net

Home Premium Fare Deals About

United Airlines

UAUnited Airlines

Round Trip•Economy

Washington Dulles International Airport

Washington, United States

Cancún International Airport

Cancún, Mexico

$485 USD

-27%$354 USD

Verified 7 days ago

September 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$354 1$364 2$396 3$567 4$397 5$359 6$354 7$364 8$354 9$354 10$359 11$359 12$359 13$354 14$354 15$354 16$359 17$359 18$359 19$359 20$354 21$354 22$354 23$373 24$359 25$354 26$354 27$354 28$354 29$354 30$359 1$359 2$359 3$359 4$354

Good Availability

51% of dates checked are available within 10% of the lowest price

Wednesday, September 2nd, 2026

5 round-trip options

Returning

Wed, Sep 9, 2026•7 Day Trip

$428 USD

Returning

Thu, Sep 10, 2026•8 Day Trip

$406 USD

Returning

Sun, Sep 13, 2026•11 Day Trip

$406 USD

Returning

Tue, Sep 15, 2026•13 Day Trip

$406 USD

Returning

Wed, Sep 16, 2026•14 Day Trip

$396 USD