Popular airlines from Washington Dulles Intl. Airport (IAD) to Houston William Hobby Airport (HOU)
DeltaDelta
American AirlinesAmerican Airlines
Southwest AirlinesSouthwest Airlines
Cheap Flights from Washington to Houston (IAD-HOU)
Prices were available within the past 7 days and start at $105 for one-way flights and $210 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Frequently asked questions
Travel information
Travel information
Origin airport | Washington Dulles Intl. |
Destination airport | George Bush Intercontinental |
Airlines serving | American Airlines, Delta, Southwest Airlines |
Roundtrip price | $210 |
Distance | 1189 mi |
Book with confidence
Book with confidence
The cheapest times to fly from Washington to Houston
On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Houston are during the month of May. You can find some of the cheapest flights from Washington to Houston with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Washington to Houston
Sunday is one of the best days to book for cheap flights from Washington to Houston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.
How to find cheap round-trip tickets from Washington to Houston
Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Houston in 2025. You can also book with separate airlines for your outbound and return journeys, from $105 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.
Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Houston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.
You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Houston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.
*Terms apply.
Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.
Be inspired and discover more with Expedia
Be inspired and discover more with Expedia
Flights
- Air France
- American Airlines
- Turkish Airlines
- Swiss International Air Lines
- British Airways
- United
- Frontier Airlines
- Lufthansa
- Alaska Airlines
- Air Canada
- avianca
- Delta
- Emirates
- KLM
- Etihad Airways
- Qatar Airways
- Flights from Denver (DEN) to Las Vegas (LAS)
- Flights from Portland (PDX) to Las Vegas (LAS)
- Flights from Dallas (DFW) to Las Vegas (LAS)
- Flights from Minneapolis (MSP) to Las Vegas (LAS)
- Flights from Atlanta (ATL) to Las Vegas (LAS)
- Flights from Chicago (ORD) to Las Vegas (LAS)
- Flights from Houston (IAH) to Las Vegas (LAS)
- Flights from New York (NYC) to Las Vegas (LAS)
- Flights from Los Angeles (LAX) to Las Vegas (LAS)
- Flights from Detroit (DTW) to Las Vegas (LAS)
- Flights from San Francisco (SFO) to Las Vegas (LAS)
- Flights from Seattle (SEA) to Las Vegas (LAS)
- Flights from Washington (IAD) to Los Angeles (LAX)
- Flights from Houston (IAH) to Los Angeles (LAX)
- Flights from New York (NYC) to Los Angeles (LAX)
- Flights from Dallas (DFW) to Los Angeles (LAX)
- Flights from Seattle (SEA) to Los Angeles (LAX)
- Flights from Las Vegas (LAS) to Los Angeles (LAX)
- Flights from Washington (IAD) to Hyderabad (HYD)
- Flights from Boston (BOS) to Miami (MIA)
- Flights from Washington (IAD) to Miami (MIA)
- Flights from Washington (IAD) to Guatemala City (GUA)
- Flights from Dallas (DFW) to Orlando (MCO)
- Flights from Boston (BOS) to Orlando (MCO)
- Flights from Philadelphia (PHL) to Orlando (MCO)
- Flights from Phoenix (PHX) to Houston (HOU)
- Flights from New York (LGA) to Houston (HOU)
- Flights from Charlotte (CLT) to Houston (HOU)
- Flights from Minneapolis (MSP) to Houston (HOU)
- Flights from Miami (MIA) to Houston (HOU)
- Flights from Fort Lauderdale (FLL) to Houston (HOU)
- Flights from Chicago (MDW) to Houston (HOU)
- Flights from Newark Liberty Intl. Airport (EWR) to Houston (HOU)
- Flights from Boston (BOS) to Houston (HOU)
- Flights from Los Angeles (LAX) to Houston (HOU)
- Flights from Chicago (ORD) to Houston (HOU)
- Flights from Detroit (DTW) to Houston (HOU)
- Flights from Washington (IAD) to Paris (CDG)
- Flights from Dallas (DFW) to Chicago (ORD)
- Flights from Washington (IAD) to Fort Lauderdale (FLL)
- Flights from Washington (IAD) to Punta Cana (PUJ)
- Flights from Los Angeles (LAX) to Dallas (DFW)
- Flights from Seattle (SEA) to Phoenix (PHX)
- Flights from Los Angeles (LAX) to New York (NYC)
- Flights from Miami (MIA) to New York (NYC)
- Flights from Atlanta (ATL) to New York (NYC)
- Flights from Dallas (DFW) to New York (NYC)
- Flights from Washington (IAD) to Tampa (TPA)
- Flights from Washington (IAD) to Tokyo (NRT)
- Flights from Washington (IAD) to London (LHR)
- Flights from Washington (IAD) to Delhi (DEL)
- Flights from Los Angeles (LAX) to Seattle (SEA)
- Flights from Washington (IAD) to Rome (FCO)
- Flights from New York (NYC) to Atlanta (ATL)
- Aeromexico Washington (IAD) to Cancun (CUN) flights
- United Washington (IAD) to Los Angeles (LAX) flights
- United Washington (IAD) to Miami (MIA) flights
- avianca Washington (IAD) to Guatemala City (GUA) flights
- Frontier Airlines Washington (IAD) to Orlando (MCO) flights
- American Airlines Boston (BOS) to Houston (HOU) flights
- Delta Fort Lauderdale (FLL) to Houston (HOU) flights
- Delta Miami (MIA) to Houston (HOU) flights
- American Airlines Los Angeles (LAX) to Houston (HOU) flights
- Delta Newark Liberty Intl. Airport (EWR) to Houston (HOU) flights
- American Airlines Minneapolis (MSP) to Houston (HOU) flights
- American Airlines Phoenix (PHX) to Houston (HOU) flights
- American Airlines Charlotte (CLT) to Houston (HOU) flights
- American Airlines New York (LGA) to Houston (HOU) flights
- American Airlines Denver (DEN) to Houston (HOU) flights
- United Washington (IAD) to Fort Lauderdale (FLL) flights
- Air Canada Washington (IAD) to Tokyo (NRT) flights
- Emirates Washington (IAD) to Delhi (DEL) flights
- Flights from College Park
- Flights from Easton - Newnam
- Flights from Montgomery County Airpark
- Flights from Ronald Reagan Washington National
- Flights from Eastern West Virginia Regional
- Flights from Martin State
- Flights from Baltimore Washington Intl. Thurgood Marshall
- Flights from Manassas Regional
- Flights from Hagerstown Regional
- Flights from Tipton
- Flights to Chicago
- Flights to Pigeon Forge
- Flights to Nashville
- Flights to San Francisco
- Flights to Gatlinburg
- Flights to Orlando
- Flights to Houston
- Flights to Los Angeles
- Flights to Honolulu
- Flights to San Diego
- Flights to San Antonio
- Flights to Boston
- Flights to Atlanta
- Flights to New Orleans
- Flights to Key West
- Flights to Miami
- Flights to Las Vegas
- Flights to Fort Lauderdale
- Flights to Washington
- Flights to New York