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Cheap flights from Washington Dulles to Houston

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Flight deals from Washington Dulles to Houston

Looking for a cheap last-minute deal or the best round-trip flight from Washington Dulles to Houston? Find the lowest prices on one-way and round-trip tickets right here.
Houston.$199 per passenger.Departing Thu, Aug 21, returning Thu, Aug 28.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Thu, Aug 21, arriving in Houston George Bush Intercntl..Inbound indirect flight with Frontier Airlines, departing from Houston George Bush Intercntl. on Thu, Aug 28, arriving in Washington Dulles.Price includes taxes and charges.From $199, select.
Houston.$199 per passenger.Departing Sat, Jun 7, returning Sun, Jun 8.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Sat, Jun 7, arriving in Houston George Bush Intercntl..Inbound indirect flight with Frontier Airlines, departing from Houston George Bush Intercntl. on Sun, Jun 8, arriving in Washington Dulles.Price includes taxes and charges.From $199, select.
Houston.$204 per passenger.Departing Sat, May 17, returning Sat, May 24.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Sat, May 17, arriving in Houston George Bush Intercntl..Inbound indirect flight with Frontier Airlines, departing from Houston George Bush Intercntl. on Sat, May 24, arriving in Washington Dulles.Price includes taxes and charges.From $204, select.
Houston.$212 per passenger.Departing Thu, May 29, returning Thu, Jun 5.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Thu, May 29, arriving in Houston George Bush Intercntl..Inbound indirect flight with Frontier Airlines, departing from Houston George Bush Intercntl. on Thu, Jun 5, arriving in Washington Dulles.Price includes taxes and charges.From $212, select.
Houston.$230 per passenger.Departing Sat, Jun 28, returning Sat, Jul 5.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Sat, Jun 28, arriving in Houston George Bush Intercntl..Inbound indirect flight with Frontier Airlines, departing from Houston George Bush Intercntl. on Sat, Jul 5, arriving in Washington Dulles.Price includes taxes and charges.From $230, select.
Houston.$241 per passenger.Departing Thu, Jul 31, returning Fri, Aug 15.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Thu, Jul 31, arriving in Houston George Bush Intercntl..Inbound indirect flight with Frontier Airlines, departing from Houston George Bush Intercntl. on Fri, Aug 15, arriving in Washington Dulles.Price includes taxes and charges.From $241, select.
Houston.$261 per passenger.Departing Thu, Jul 17, returning Tue, Jul 22.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Thu, Jul 17, arriving in Houston George Bush Intercntl..Inbound indirect flight with Frontier Airlines, departing from Houston George Bush Intercntl. on Tue, Jul 22, arriving in Washington Dulles.Price includes taxes and charges.From $261, select.
Houston.$261 per passenger.Departing Thu, Sep 11, returning Mon, Sep 15.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Washington Dulles on Thu, Sep 11, arriving in Houston George Bush Intercntl..Inbound indirect flight with Frontier Airlines, departing from Houston George Bush Intercntl. on Mon, Sep 15, arriving in Washington Dulles.Price includes taxes and charges.From $261, select.

Find the cheapest month to fly from Washington Dulles to Houston

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to Houston flights are currently cheapest in June.
May
from $204
Jun
from $199
Jul
from $261
Aug
from $199
Sep
from $261
Oct
from $268
Nov
from $271
Dec
from $302
Jan
from $288
Feb
from $373
Mar
from $349
Apr
from $269

Direct flights from Washington Dulles to Houston

Alternative Washington Dulles to Houston routes

Looking for the cheapest, fastest or easiest route from Washington Dulles to Houston? You could fly into the following airports instead.

Washington, D.C. to Houston: Flight information

The things to know before you go.
Cheapest flight found$199
Cheapest month to flyJune
Average flight time3 hrs, 18 mins
Most popular airlineUnited
Average flights per week145

Finding cheap flights from Washington Dulles to Houston: Frequently asked questions

There are 4 airports in Houston: Houston Hobby, Houston George Bush Intercntl., Houston Ellington Field, and Galveston.
The best price we found for a round-trip flight from Washington Dulles to Houston is $198. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 18 minutes is the average flight time from Washington Dulles to Houston.
United, Air New Zealand and Avianca fly direct from Washington Dulles to Houston.
There are 290 flights per week flying from Washington Dulles to Houston, as of May 2025.
The cheapest month to fly from Washington Dulles to Houston is usually May 2025.
If you're flying from Washington Dulles Airport, the cheapest airport near Houston is Houston George Bush Intercntl. – which is 25.0 km away from the center of Houston. We've found flights to this airport from $198.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Houston on Saturday, June 7, 2025.
Yes – the average flight time is 3 hours and 18 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Houston but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Houston is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 25°C. August is typically the warmest month in Houston, when it usually averages around 34°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 6°C. The rainiest month is June.
Currently, Frontier Airlines and United offer the cheapest flight tickets to Houston.

Flying from Washington Dulles International Airport (IAD) to Houston: what you need to know

  • Book a direct flight from Washington Dulles International Airport to Houston and you'll be in the air for around 3 hours 5 minutes.

  • Houston is one hour behind Washington DC, where Washington Dulles International Airport is located. Houston follows the UTC-5 timezone.

  • The busiest route is from Washington Dulles International Airport (IAD) to George Bush Intercontinental Airport (IAH). You can choose from 37 services every week between these two airports. If you want to head off as soon as possible, the earliest flight from IAD to IAH is the 06:00 United Airlines option. If you prefer to travel later, the last departure is at 22:32 with United Airlines.

  • For hassle-free travel, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This leaves you with plenty of time to board your IAD to Houston flight.

  • If you're flying during a major holiday or another peak period, allow extra time. A good general rule is two hours before domestic flights and up to four hours before international departures. Queues at security and check-in will be longer.

  • Begin your journey at IAD and fly straight to George Bush Intercontinental Airport (IAH). That will be your arrival point when searching for Washington Dulles International Airport to Houston tickets.

  • United Airlines is a well-known carrier that offers direct flights from Washington Dulles International Airport to Houston.

  • Located around 40 kilometers from the center of Washington DC, IAD can be reached in about 50 minutes by car (depending on traffic). Traveling on public transport takes roughly 1 hour 10 minutes.

  • Planning to catch an early flight from Washington Dulles International Airport to Houston? Avoid the hassle of rushing to the terminal (and catch some extra z's) by choosing one of these stays near IAD:

  • 74.39% of flights leaving from Washington Dulles International Airport reach their destination on time.

  • IAD is located at 1 Saarinen Circle.

How to find the cheapest flights from Washington Dulles International Airport (IAD) to Houston

  • $100 is currently the lowest price for a one-way Washington Dulles International Airport to Houston flight. A return flight ticket starts from $199. These prices can change depending on demand.

  • To secure cheap flights from IAD to Houston, book your journey one month ahead of your departure.

  • May is the best month for landing an amazing deal on Washington Dulles International Airport to Houston tickets. If you want to travel at a different time of year, the 'Whole month' tool will show you the lowest prices for each month.

  • Picking up a cheap flight from IAD to Houston is easy with Price Alerts. All you need to do is create one of these automatic notifications and we'll let you know as soon as there's a better deal.

  • Select your preferred departure and arrival times, airlines and number of stops with our filters. Then, sort the results for your flight from Washington Dulles International Airport to Houston by 'Cheapest,' 'Best' or 'Fastest.'

Airports in Houston

George Bush Intercontinental Airport (IAH)

William P. Hobby Airport (HOU)

  • William P. Hobby Airport (HOU) is about 19 kilometers from central Houston. Once you've hopped off your flight from Washington Dulles International Airport to Houston, it'll take you around 20 minutes to reach the heart of the city in a ride-share or cab.

  • If you travel by public transport, you'll get to the city center in 1 hour 40 minutes or so.

  • There are some comfortable places ready to welcome you near HOU. Unwind and get cozy after your IAD to Houston flight at one of these well-located options:

  • Forget about public transport schedules or cab lines. Grab a William P. Hobby Airport rental car and blaze your own trail. Check out the availability and rates from Easirent, Dollar and Thrifty.

  • Avoid paying extra. Booking your ride four weeks before your arrival at HOU can land you a better rate.

  • William P. Hobby Airport can be found at 7800 Airport Boulevard.

Best time to go to Houston

  • Carefully consider your trip dates before booking your flight from Washington Dulles International Airport to Houston. The city comes alive in high season, but hotel rates are typically higher and major attractions can be crowded. Go to Houston in the low season if you like a quieter vibe.

  • Before locking in your Washington Dulles International Airport to Houston flight ticket, think about the kind of weather forecast you're hoping for. August is the warmest month in Houston, with temperatures ranging from 24ºC (75ºF) to 40ºC (104ºF).

  • For cooler conditions, look for a cheap ticket from IAD to Houston in January when temperatures average between 5ºC (41ºF) and 19ºC (66ºF).

More about Houston

Explore more of United States

  • San Antonio is just one of the many places in United States waiting to be explored after you've seen Houston. Around 306 kilometers away to the west, top sights here include The San Antonio River Walk, San Antonio Missions National Historical Park and San Fernando Cathedral.

  • Around 370 kilometers north of Houston, Dallas is another essential stop in United States. Experience the best of this destination with a visit to Dallas Arboretum and Botanical Gardens, Perot Museum of Nature and Science and Dallas Museum of Art.

More travel options

Plan the rest of your trip from Washington, D.C. to Houston

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.