Denver (DEN) to Washington (IAD) flight deal from $89 USD in economy class – flightdeals.net

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United Airlines

UAUnited Airlines

One Way•Economy

Denver International Airport

Denver, United States

Washington Dulles International Airport

Washington, United States

$175 USD

-49%$89 USD

Verified Nov 28, 2025 at 10:49 PM

January 2026

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29$180 30$180 31$180 1$180 2$190 3$339 4$234 5$173 6$89 7$89 8$109 9$109 10$89 11$109 12$109 13$89 14$89 15$109 16$109 17$89 18$109 19$109 20$89 21$89 22$109 23$109 24$89 25$109 26$109 27$89 28$89 29$109 30$109 31$89 1

Limited Availability

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

Thursday, January 22nd, 2026

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