IAD to CUN from $171 in economy – flightdeals.net

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United Airlines

UAUnited Airlines

One Way•Economy

Washington Dulles International Airport

Washington, United States

Cancún International Airport

Cancún, Mexico

$219 USD

-22%$171 USD

Verified 7 days ago

August 2026

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Sun

27 28 29 30 31$335 1$316 2$312 3$312 4$312 5$316 6$335 7$242 8$242 9$242 10$242 11$242 12$260 13$242 14$242 15$242 16$242 17$242 18$238 19$242 20$242 21$171 22$171 23$171 24$171 25$171 26$175 27$175 28$171 29$171 30$171 31$171 1 2 3 4 5 6

Great Availability

61% of dates checked are available within 10% of the lowest price

Wednesday, August 5th, 2026

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