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Cheap Flights from Houston to Washington Dulles

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Compare Houston to Washington Dulles flight deals

Find the cheapest month or even day of the year to fly to Washington Dulles

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Flight deals from Houston to Washington Dulles

Looking for a cheap last-minute deal or the best return flight from Houston to Washington Dulles? Find the lowest prices on one-way and return tickets right here.
Washington D.C..R 1,715 per passenger.Departing Wed, 16 Jul.One-way flight with Delta.Outbound indirect flight with Delta, departs from Houston George Bush Intercntl. on Wed, 16 Jul, arriving in Washington Dulles.Price includes taxes and charges.From R 1,715, select.
Washington D.C..R 1,715 per passenger.Departing Sat, 3 May.One-way flight with Delta.Outbound indirect flight with Delta, departs from Houston George Bush Intercntl. on Sat, 3 May, arriving in Washington Dulles.Price includes taxes and charges.From R 1,715, select.
Washington D.C..R 1,721 per passenger.Departing Wed, 1 Oct.One-way flight with Delta.Outbound indirect flight with Delta, departs from Houston Hobby on Wed, 1 Oct, arriving in Washington Dulles.Price includes taxes and charges.From R 1,721, select.
Washington D.C..R 1,721 per passenger.Departing Wed, 13 Aug.One-way flight with American Airlines.Outbound indirect flight with American Airlines, departs from Houston Hobby on Wed, 13 Aug, arriving in Washington Dulles.Price includes taxes and charges.From R 1,721, select.
Washington D.C..R 1,721 per passenger.Departing Sat, 26 Apr.One-way flight with Delta.Outbound indirect flight with Delta, departs from Houston Hobby on Sat, 26 Apr, arriving in Washington Dulles.Price includes taxes and charges.From R 1,721, select.
Washington D.C..R 1,813 per passenger.Departing Tue, 16 Sep.One-way flight with Delta.Outbound indirect flight with Delta, departs from Houston Hobby on Tue, 16 Sep, arriving in Washington Dulles.Price includes taxes and charges.From R 1,813, select.
Washington D.C..R 2,389 per passenger.Departing Sun, 8 Jun.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Sun, 8 Jun, arriving in Washington Dulles.Price includes taxes and charges.From R 2,389, select.
Washington D.C..R 2,472 per passenger.Departing Thu, 17 Jul.One-way flight with United.Outbound direct flight with United departs from Houston George Bush Intercntl. on Thu, 17 Jul, arriving in Washington Dulles.Price includes taxes and charges.From R 2,472, select.

Find the cheapest month to fly from Houston to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Houston to Washington Dulles flights are currently cheapest in May.
Mar
from R 3,595
Apr
from R 1,721
May
from R 1,715
Jun
from R 2,389
Jul
from R 1,715
Aug
from R 1,721
Sep
from R 1,813
Oct
from R 1,721
Nov
from R 2,814
Dec
from R 2,472
Jan
Find prices
Feb
Find prices

Direct flights from Houston to Washington Dulles

Houston to Washington Dulles: Alternative routes

Compare routes from Houston to Washington D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Washington Dulles.

Houston to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundR 1,715
Cheapest month to flyMay
Average flight time3 hrs, 8 mins
Most popular airlineUnited
Average flights per week129

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

The best price we found for a return flight from Houston to Washington Dulles is R 3,442. 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 8 minutes is the average flight time from Houston to Washington Dulles.
United, Air New Zealand and Avianca fly direct from Houston to Washington Dulles.
As of March 2025, there are 129 flights per week flying from Houston to Washington Dulles.
The cheapest month to fly from Houston to Washington Dulles is usually March 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Houston to Washington Dulles Airport on Wednesday, 23 April 2025.
Yes – the average flight time is 3 hours and 8 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 Washington Dulles 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 Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

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

  • All great adventures start at one of Houston's main airports, George Bush Intercontinental Airport (IAH) or William P. Hobby Airport (HOU). Explore your options for booking a flight from Houston to Washington Dulles International Airport (IAD) taking off from either of these bases.

  • Around 3 hours 3 minutes is how long you can expect to be travelling on a direct flight from Houston to Washington Dulles International Airport.

  • Washington DC is 1 hour ahead of Houston. Washington Dulles International Airport is located in Washington DC, which operates on the UTC-4 timezone.

  • With 149 direct weekly flights between the two airports, George Bush Intercontinental Airport (IAH) to Washington Dulles International Airport (IAD) is the most popular route. United operates the earliest flight at 07:22. If you'd like to make the most of your day before jetting off, the latest departure from IAH to IAD is with United at 20:03.

  • Give yourself enough time to catch your flight from Houston to IAD. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

  • If you're travelling during a peak month like July, get to the terminal even earlier. It's wise to arrive up to four hours before an international flight and two hours ahead of a domestic departure. Check-in and security lines will be longer during peak periods like summer and spring break.

Airports in Houston

George Bush Intercontinental Airport (IAH)

  • You can find a direct flight from Houston to Washington Dulles International Airport (IAD) departing from George Bush Intercontinental Airport (IAH).

  • If you plan to leave from IAH, you can catch a direct flight from Houston to Washington Dulles International Airport with United.

  • The distance from central Houston to IAH is approximately 27 kilometres. Use travel apps like Google Maps for the fastest route, whether you prefer to drive or use public transport.

  • Want a stress-free start to your travels? Stay near George Bush Intercontinental Airport. Whether you have an early flight from Houston to Washington Dulles International Airport or want to avoid feeling rushed, these hotels have you covered:

William P. Hobby Airport (HOU)

  • Planning to leave from William P. Hobby Airport (HOU)? You can reserve a direct flight from Houston to Washington Dulles International Airport (IAD) out of this popular hub.

  • United operates direct flights from Houston to IAD leaving from HOU. Book your favourite aisle (or window) seat and reach your destination in a single hop.

  • With public transport, you can travel from central Houston to HOU in about 1 hour and 42 minutes. The terminal is roughly 19 kilometres away, and making the trip by car will take approximately 22 minutes.

  • It's your holiday, so why not spend an extra night away? Think about checking in to one of these hotels near William P. Hobby Airport the day before your flight from Houston to IAD:

About Washington Dulles International Airport (IAD)

Getting from Washington Dulles International Airport (IAD) to central Washington DC

  • Washington Dulles International Airport is approximately 56 kilometres from the centre of Washington DC. With a car rental or if you're catching a cab, the drive is around 51 minutes.

  • It typically takes 3 hours and 26 minutes when travelling by public transport.

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

  • R 1,715 is the lowest price we've found for a one-way ticket from Houston to Washington Dulles International Airport. Return flights start from R 3,442. Prices may vary depending on availability at the time of booking.

  • Book 8 months before your departure date. After crunching the numbers on our calendar, this is how far you'll want to book ahead to find cheap tickets from Houston to IAD.

  • May is the cheapest month for tickets from Houston to Washington Dulles International Airport. If you need to travel during a different time of year, use the 'Whole month' search feature to see the lowest prices across every month.

  • Create a Price Alert for cheap tickets from Houston to IAD. There's no need to search every day to find out if fares have dropped. We'll notify you as soon as there's a change in price.

  • Use the filters to tailor your flights from Houston to Washington Dulles International Airport. Simply select your preferred departure and arrival times, number of stops and airlines. You can also sort your results by 'Cheapest' to see the best deals.

The best time to fly from Houston to Washington Dulles International Airport (IAD)

  • It's time to plan your travel dates for your flight from Houston to Washington Dulles International Airport. July is the most popular month to visit Washington DC. If you want a more peaceful vibe, go in February.

  • Think about the kind of weather that'll suit your plans for Washington DC. July is known as the warmest month. Book your flights from Houston to IAD during then and you can expect temperatures of between 19ºC and 33ºC.

  • Search for cheap flights from Houston to Washington Dulles International Airport in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between -6ºC and 10ºC on average.

More about Washington DC

  • Start your Washington DC trip right by choosing the ideal place to stay. Once you've booked your flight from Houston to Washington Dulles International Airport, explore our selection of accommodation options including:

  • White House Historical Association and The White House are just the start of the leading attractions to put on your Washington DC itinerary. Continue your sightseeing adventures at National Mall.

Complete your Washington DC trip with a car rental

  • Shut down all those tabs and leave the hard work to us. We can also help you find deals on car rentals in Washington DC once you've booked your hotel and cheap flight from Houston to Washington Dulles International Airport. Instantly compare prices all in one place and drive off with the perfect rental for less.

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

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