Cheap flights from Washington, D.C. to Houston from $114

The month of August is, on average, the cheapest month to fly to Houston from Washington, D.C., with most prices found around $47. The month of November is another great option to travel to Houston, with average flight prices from Washington, D.C. averaging around $389.

On average, the least expensive day to fly to Houston from Washington, D.C. is on a Thursday. momondo users have found tickets for Thursday departures for as low as $388. 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 $519.

Our data shows that the cheapest Washington, D.C. 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 $454. Try not to purchase tickets in the afternoon because they tend to be around $613. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Houston from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston for around $392 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. for as low as $254 on momondo.

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

Frontier, Southwest, and Delta are the most popular carriers operating from Washington, D.C. to Houston

United Airlines, Spirit Airlines and Frontier are the top three most popular airlines that fly to Houston from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Houston. Keep in mind that there are 6 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 164 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. Friday 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 12% of their flights experiencing any sort of delay.

The number of flights available between Washington, D.C. and Houston is 45 per day as of May 2026. The most frequent departure time is 6:00AM, with 45% of daily flights leaving at noon.

The number of flights available between Washington, D.C. and Houston is 321 per week as of May 2026. The most frequent departure day is Mon, with 19% of weekly flights leaving on this day.