$135 Cheap United flights Houston (IAH) to Washington (IAD)

Grab budget-friendly return United Airlines flights from $254 from IAH to IAD by organizing your results from “Price (lowest to highest)” on Expedia. Or search for options from $135 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Look for one-way or round-trip flights to Washington in January or February. You could find a cheap fare with United Airlines during these quieter months.

Look for cheap United Airlines flights from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD) one to three months ahead of your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the best day of the week to book a domestic flight is usually Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Choose from one of United Airlines’s 28 weekly direct flights from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD). To see your choices, enter your origin, dates and destination and hit search. Then apply the “Nonstop” and “Airline” filters.

On average, it takes 3h 2m to travel nonstop from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD) with United Airlines.

United Airlines operates the most flights from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD) on Wednesday. With up to 4 daily departures, you’ll get the most choice and flexibility on this day.

The earliest flight from IAH to IAD with United Airlines departs at 7:45AM UTC-6. You’ll touch down at 11:49AM UTC-5. The final United Airlines flight of the day leaves at 6:05PM UTC-6 and arrives at 10:09PM UTC-5. With approximately 20% fewer cancellations for early and mid-morning flights, heading out early is typically the best way to go.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

United Airlines flights from George Bush Intercontinental Airport (IAH) to Washington land at Washington Dulles Intl. Airport (IAD), Ronald Reagan Washington National Airport (DCA) and Baltimore Washington Intl. Thurgood Marshall Airport (BWI). The primary Washington gateway served by this carrier is IAD. It’s always worth considering flights landing at other nearby airports on Expedia as they may have lower prices.

Offering a rewarding loyalty program, United Airlines is a favorite of many travelers journeying from IAH to IAD. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely be on a Boeing 767-300 or an Airbus A320 when flying United Airlines from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD). However, keep in mind that a different plane may be used due to operational factors.

Changes are often free within 24 hours of making your booking, but your airline may add a charge after that time. For more information about modifying your reservation, check out your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to update your itinerary without extra charges, apply the “Changes included” and “No cancel fee” filters when organizing your next getaway.