Washington (IAD) to Cancún (CUN) flight deal in economy from $354

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesIAD

Washington Dulles International Airport

Washington, United States
MexicoCUN

Cancún International Airport

Cancún, Mexico
$485 USD
-27%$354 USD
Verified 7 days ago
Good Availability
51% of dates checked are available within 10% of the lowest price

Friday, October 2nd, 2026

5 round-trip options

Returning
Fri, Oct 9, 2026•7 Day Trip
$359 USD
Google Flights
Returning
Sat, Oct 10, 2026•8 Day Trip
$369 USD
Google Flights
Returning
Tue, Oct 13, 2026•11 Day Trip
$392 USD
Google Flights
Returning
Thu, Oct 15, 2026•13 Day Trip
$359 USD
Google Flights
Returning
Fri, Oct 16, 2026•14 Day Trip
$359 USD
Google Flights