Cheap flights from Houston to Washington, D.C. from $126

The month of January is, on average, the cheapest month to fly to Washington, D.C. from Houston, with most prices found around $314. If you’re not able to fly to Washington, D.C. in January, then October is your next best option. Flight prices from Houston to Washington, D.C. during October average around $321.

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 $612.

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 $553. 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 $686. 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

You are more likely to see cheaper flights to Washington, D.C. from Houston when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $463 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Houston for as low as $250 on momondo.

There are 4 cabin classes available to choose from on Houston to Washington, D.C. 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 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 49% 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 25% 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 120 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 25% of their flights experiencing any sort of delay.

The number of flights available between Houston and Washington, D.C. is 39 per day as of September 2026. The most frequent departure time is 7:00AM, with 41% of daily flights leaving at noon.

The number of flights available between Houston and Washington, D.C. is 274 per week as of September 2026. The most frequent departure day is Thu, with 21% of weekly flights leaving on this day.