Cheap flights from Houston to Washington, D.C. from $128

In general, December is the cheapest month to fly from Houston to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $63. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of December, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $68.

Flying to Washington, D.C. Dulles Intl Airport from Houston at noon is the least expensive time of day to depart. momondo users have found prices as low as $880 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,115 on average. Flights to Washington, D.C. Dulles Intl Airport from Houston in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Houston George Bush Intcntl to Washington, D.C. Dulles Intl for the best Houston - Washington, D.C. Dulles Intl flight prices

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Houston when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $417 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Houston for as low as $166 on momondo.

Historically, on average around 28% of flights between Houston and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 66 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

As of June 2026, there are 15 flights per day flying from Houston to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 7:00AM, with 56% of flights taking off in the afternoon.

109 flights are operational weekly from Houston to Washington, D.C. Dulles Intl Airport as of June 2026. The most popular departure day for this route is Thu, with 22% of flights per week taking off on this day.