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

Wednesday, August 12th, 2026

3 round-trip options

Returning
Mon, Aug 17, 2026•5 Day Trip
$651 USD
Google Flights
Returning
Sun, Aug 23, 2026•11 Day Trip
$635 USD
Google Flights
Returning
Wed, Aug 26, 2026•14 Day Trip
$512 USD
Google Flights