Cheap flights from Houston to Washington, D.C. from $124

The month of October is, on average, the cheapest month to fly to Washington, D.C. from Houston, with most prices found around $313. If you’re not able to fly to Washington, D.C. in October, then January is your next best option. Flight prices from Houston to Washington, D.C. during January average around $314.

On average, the least expensive day to fly to Washington, D.C. from Houston is on a Saturday. momondo users have found tickets for Saturday departures for as low as $420. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Houston to Washington, D.C. for around $648.

In the morning is the cheapest time of day to fly from Houston to Washington, D.C. when you can find flight prices for as low as $554. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $691. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to Washington, D.C. from Houston according to our data. United Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% 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 121 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. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, Southwest have had the least number of delays on this route over the last 12 months; with about 24% of their flights experiencing any sort of delay.

The number of flights available between Houston and Washington, D.C. is 23 per day as of August 2026. The most frequent departure time is 7:00AM, with 43% of daily flights leaving in the afternoon.

The number of flights available between Houston and Washington, D.C. is 165 per week as of August 2026. The most frequent departure day is Wed, with 30% of weekly flights leaving on this day.