Cheap Flights from Washington Dulles (IAD) to Houston (HOUA)

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Compare Washington Dulles to Houston flight deals

Find the cheapest month or even day of the year to fly to Houston

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£44 Flight deals from Washington Dulles to Houston

Looking for a cheap last-minute deal or the best return flight from Washington Dulles Airport to Houston? If you want to travel next month, return fares start from £106. Find the lowest prices on one-way and return tickets right here.

Houston.£44 per passenger.Departing Fri, 30 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Fri, 30 Oct, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £44, select.

Houston.£52 per passenger.Departing Tue, 17 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Tue, 17 Nov, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £52, select.

Houston.£56 per passenger.Departing Tue, 15 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Tue, 15 Sep, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £56, select.

Houston.£67 per passenger.Departing Sat, 5 Dec.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Sat, 5 Dec, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £67, select.

Houston.£81 per passenger.Departing Thu, 24 Dec.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Thu, 24 Dec, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £81, select.

Houston.£81 per passenger.Departing Tue, 26 Jan.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Tue, 26 Jan, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £81, select.

Houston.£109 per passenger.Departing Mon, 26 Oct.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Mon, 26 Oct, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £109, select.

Houston.£109 per passenger.Departing Mon, 14 Sep.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Mon, 14 Sep, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £109, select.

Houston.£109 per passenger.Departing Sat, 7 Nov.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Sat, 7 Nov, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £109, select.

Houston.£109 per passenger.Departing Thu, 25 Feb.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Thu, 25 Feb, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £109, select.

Houston.£125 per passenger.Departing Sun, 30 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Sun, 30 Aug, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £125, select.

Houston.£134 per passenger.Departing Wed, 21 Apr.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Wed, 21 Apr, arriving in Houston Hobby.Price includes taxes and charges.From £134, select.

Houston.£136 per passenger.Departing Tue, 4 May.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Tue, 4 May, arriving in Houston Hobby.Price includes taxes and charges.From £136, select.

Houston.£136 per passenger.Departing Mon, 24 May.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Mon, 24 May, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £136, select.

Houston.£136 per passenger.Departing Mon, 14 Jun.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Mon, 14 Jun, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £136, select.

Houston.£170 per passenger.Departing Thu, 11 Mar.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Thu, 11 Mar, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From £170, 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 October.

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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	£44
Cheapest month to fly	October
Average flight time	3 hrs, 27 mins
Most popular airline	United
Average flights per week	288

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

How many airports are there in Houston?

There are 3 airports in Houston: Houston Hobby, Houston George Bush Intercntl. and Houston Ellington Field.

How much are return flights from Washington Dulles to Houston?

The best price we found for a return flight from Washington Dulles to Houston is £106. 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.

How long does it take to fly from Washington Dulles to Houston?

3 hours and 27 minutes is the average flight time from Washington Dulles to Houston.

Which airlines fly direct from Washington Dulles to Houston?

United, Air New Zealand and Avianca fly direct from Washington Dulles to Houston.

How many flights are there a week from Washington Dulles to Houston?

As of August 2026, there are 144 flights per week flying from Washington Dulles to Houston.

When is the cheapest time to fly from Washington Dulles to Houston?

The cheapest month to fly from Washington Dulles to Houston is usually September.

Which is the cheapest airport to fly into in Houston?

If you're flying from Washington Dulles Airport, the cheapest airport near Houston is Houston George Bush Intercntl. – which is 15.5 miles away from the centre of Houston. We've found flights into this airport from £106.

Which upcoming date is cheapest to fly from Washington Dulles Airport to Houston on?

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, 12 September 2026.

Can I get a direct flight from Washington Dulles Airport to Houston?

Yes – the average flight time is 3 hours and 27 minutes.

How can I get the best flight deal from Washington Dulles Airport to Houston?

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.

When is the best time to book flights to Houston?

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.

What’s the weather like in Houston?

In August, the average temperature is usually around 29°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.

Which is the cheapest airline to fly from Washington Dulles Airport to Houston with?

Currently, Frontier Airlines and United offer the cheapest flight tickets to Houston.

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

Approximately 3 hours 5 minutes is how long you'll be travelling on a direct flight from Washington Dulles International Airport to Houston.
Houston is one hour behind Washington DC, where Washington Dulles International Airport is located. Houston follows the UTC-6 timezone.
The busiest route is from Washington Dulles International Airport (IAD) to Houston George Bush Intercontinental Airport (IAH). You can choose from 36 services every week between these two airports. If you want to get on your way as soon as you can, the earliest flight from IAD to IAH is the 06:00 United Airlines option. If you prefer to travel later, the final departure is at 22:32 with United Airlines.
For a relaxed start to your IAD to Houston flight, allow plenty of time for things like check-in and baggage drop. Turning up two hours before international departures and an hour before domestic flights is the general rule.
Be prepared for longer lines in popular months such as June. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a wise move.
Direct Washington Dulles International Airport to Houston tickets are available for booking. Houston George Bush Intercontinental Airport (IAH) is where you'll step off the plane.
United Airlines is a popular airline that offers direct flights from Washington Dulles International Airport to Houston.
Travelling from central Washington DC to IAD takes about 1 hour 10 minutes by public transport. If you drive, ride-share or take a taxi, you'll cover the 40 kms (25 miles) in 45 minutes or so, depending on traffic conditions.
In search of a hotel near IAD? If you've booked an early flight from Washington Dulles International Airport to Houston, these accommodation options set you up for a seamless send-off:
77% of flights departing from Washington Dulles International Airport touch down at their destination on time.
You'll find IAD at 1 Saarinen Circle.

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

The best price we've seen for a one-way Washington Dulles International Airport to Houston flight is £44. The cheapest price for a return flight is £106. Keep in mind fares may change due to demand at the time of booking.
To pick up cheap flights from IAD to Houston, book as early as possible. Airlines tend to offer their most competitively priced fares when flights are first released.
If you're willing to be flexible with your travel plans, make the most of the 'Whole month' tool. It'll find the cheapest price across each month when looking for your Washington Dulles International Airport to Houston ticket.
Save time looking for cheap flights from IAD to Houston by creating a Price Alert. You'll receive an email or push notification on the app when a new low fare is offered.
Snag an affordable flight from Washington Dulles International Airport to Houston with the help of our filters. Select your preferred times, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

Airports in Houston

Houston George Bush Intercontinental Airport (IAH)

Houston George Bush Intercontinental Airport (IAH) to the centre of Houston takes around 30 minutes by car. The centre is roughly 40 kms (25 miles) away.
When travelling on public transport, expect a journey time of about 1 hour 10 minutes.
The last thing you want is a lengthy journey to your hotel if you're landing late on a flight from Washington Dulles International Airport to Houston. Book one of these accommodation options near IAH instead:
Booking your vehicle from Houston George Bush Intercontinental Airport around three weeks ahead of your flight from IAD to Houston can help you lock in the lowest rate.
The address for IAH is 16930 JFK Boulevard.

Houston Hobby Airport (HOU)

Central Houston is about 19 kms (12 miles) from Houston Hobby Airport (HOU). Once your flight from Washington Dulles International Airport to Houston has landed and you've made your way to arrivals, expect a drive of about 20 minutes.
If you travel by public transport, you'll reach the centre in 50 minutes or so.
Following your IAD to Houston flight, rest your head at a hotel close to HOU. These are some comfortable accommodation options that'll help you slip into relaxation mode:
Get first dibs on the best options. Booking your ride from HOU four weeks in advance often means better prices and a wider range of vehicles.
Houston Hobby Airport can be found at 7800 Airport Boulevard.

Best time to go to Houston

January is the quietest month for flights from Washington Dulles International Airport to Houston, while July is the busiest. Find the best time to visit Houston based on whether you prefer a laid-back vibe or a lively atmosphere.
The warmest month in Houston is August, with temperatures ranging between 24ºC and 40ºC. Lock in your Washington Dulles International Airport to Houston plane ticket then if this is the type of weather you enjoy.
Look for cheap tickets from IAD to Houston in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 5ºC and 19ºC on average.

More about Houston

Once you've booked your flight from Washington Dulles International Airport to Houston, find a hotel that offers both comfort and a great location. Make one of these options your base for exploring Houston:
Every great adventure has to include a little sightseeing. Houston Museum of Natural Science, The Museum of Fine Arts, Houston, Beck Building and The Menil Collection are must-do's during your Houston adventure.

Explore more of the United States

You've visited Houston, now it's time to explore other corners of the United States. Travel around 306 kms (190 miles) west to San Antonio to check off its top attractions. From San Antonio River Walk to San Antonio River walk and Alamo Plaza, there's plenty to keep you busy.
Dallas is another must-experience destination in the United States and is around 370 kms (230 miles) north of Houston. No trip is complete without visiting Meyerson Symphony Centre, Winspear Opera House and Dallas Museum of Art.