Question 1

Which airline has the best punctuality record on Washington, D.C. to Houston flights?

Accepted Answer

Over the last year, United Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.

Question 2

What is the most punctual flight time for Washington, D.C. to Houston flights?

Accepted Answer

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

Question 3

How often are flights from Washington, D.C. to Houston delayed?

Accepted Answer

About 11% of weekly flights between Washington, D.C. and Houston have experienced delays in the past year, with the average delay time being 163 minutes.

Question 4

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Question 5

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Houston round-trip?

Accepted Answer

Currently priced at $104, Frontier will fly you from Washington, D.C. Dulles Intl Airport to Houston and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $232 and $269, respectively. These flights start at 75% lower than the current average price 3 months from now.

Question 6

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Houston one-way?

Accepted Answer

The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Houston are Frontier ($78), United Airlines ($148), and American Airlines ($179).

Question 7

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Houston?

Accepted Answer

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Houston may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 8

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Houston?

Accepted Answer

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Houston (average of $351). Flying from Washington, D.C. Dulles Intl Airport to Houston in July is currently the most expensive (average of $548). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 9

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Houston?

Accepted Answer

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Houston flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 10

E

Accepted Answer

In terms of precipitation, rainfall in Houston ranges from 3.2 - 5.9 inches per month. June is typically the wettest month, when rainfall can reach 5.9 in. February is typically the driest time to visit Houston when rainfall is around 3.2 in.

Question 11

E

Accepted Answer

If weather is an important factor for your trip to Houston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

Question 12

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Houston?

Accepted Answer

Before booking your flight from Washington, D.C. Dulles Intl Airport to Houston check out the most popular airlines for this route: United Airlines, Frontier or Delta.

Question 13

What is the cheapest time of day to fly from IAD to HOU?

Accepted Answer

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Houston is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 8% on airfare.

Question 14

Can I find deals for flights from Dulles Intl to Houston that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Dulles Intl to Houston flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 15

How can I find direct flights from Dulles Intl to Houston?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Houston.

Question 16

Can I find deals for business class flights from Dulles Intl to Houston?

Accepted Answer

Yes. Cheapflights offers flight deals from Dulles Intl to Houston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Popular in	July
Cheapest in	April
Average price	$386

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$104	Average$253	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$232	Average$429	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$269	Average$485	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$317	Average$476	FlexibilityNo cancel fee	On-time71%

Cheap flights from Dulles Intl (IAD) to Houston

Find cheap flights from Dulles Intl to Houston with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Dulles Intl to Houston

Popular in

Cheapest in

Average price

Best time to book a flight from Dulles Intl to Houston

Have a flexible travel schedule? Discover the best time to fly to Houston from Dulles Intl with our price prediction graph.

Cheapflights Insights

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Houston?

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Houston may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Houston?

What is the cheapest time of day to fly from IAD to HOU?

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Houston is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 8% on airfare.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Houston?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Houston flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How often are flights from Washington, D.C. to Houston delayed?

About 11% of weekly flights between Washington, D.C. and Houston have experienced delays in the past year, with the average delay time being 163 minutes.

What is the most punctual flight time for Washington, D.C. to Houston flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to Houston flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.

The best insider tips for Washington, D.C. Dulles Intl Airport to Houston flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Houston trip

Our travel experts

Reviews of airlines servicing Houston

Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Houston, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Houston round-trip?

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Houston one-way?

Can I find deals for flights from Dulles Intl to Houston that include hotel bookings?

How can I find direct flights from Dulles Intl to Houston?

Can I find deals for business class flights from Dulles Intl to Houston?

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Houston?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Houston

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Houston by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Dulles Intl to Houston by cabin class

Find flights from Dulles Intl to Houston, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Dulles Intl and Houston flights

Browse other Dulles Intl and Houston flight options. Last updated on October 1, 2026.

Other flights from Dulles Intl

Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on October 1, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Top 4 airlines flying from Dulles Intl to Houston

100% Free

Book with Flexibility

Travel Smart