Cheap flights from Washington, D.C. Dulles Intl Airport to Houston from $81

The month of October is, on average, the cheapest month to fly to Houston from Washington, D.C. Dulles Intl Airport, with most prices found around $323. The month of November is another great option to travel to Houston, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $327.

On average, the least expensive day to fly to Houston from Washington, D.C. Dulles Intl Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as $376. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Houston on Sunday is $496.

Our data shows that the cheapest Washington, D.C. Dulles Intl Airport to Houston flights are usually those with departure times in the evening. Our users have found flights to Houston in the evening for as low as $417. Try not to purchase tickets in the afternoon because they tend to be around $628. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Houston from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston for around $380 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston from Washington, D.C. Dulles Intl Airport for as low as $273 on momondo.

There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl to Houston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, Delta, and Sun Country Air are the most popular carriers operating from Washington, D.C. Dulles Intl to Houston

United Airlines, Frontier and Spirit Airlines are the top three most popular airlines that fly to Houston from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 77% of people opting to fly with this airline when traveling to Houston. Keep in mind that there are 5 different airlines that fly to Houston on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% of flights between Washington, D.C. and Houston have experienced a delay on any given week. The average delay length over the past 12 months has been 156 minutes.

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

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

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

12 flights are operational daily from Washington, D.C. Dulles Intl Airport to Houston as of March 2026. The most popular departure time for this route is 5:00PM, with 50% of flights per day taking off in the afternoon.

The number of flights available between Washington, D.C. Dulles Intl Airport and Houston is 85 per week as of March 2026. The most frequent departure day is Sat, with 22% of weekly flights leaving on this day.