IAD

$115 Find Cheap Flights from Houston to Washington Dulles Airport - Compare and Save

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Everything you should know

Cheapest round-trip
$232
Typical prices: $352-$582
Frontier
Wed 12/19Mon 12/24
IAH - IAD • 1 stop
Cheapest non-stop
$297
Typical prices: $378-$611
United Airlines
Mon 2/12Thu 2/15
IAH - IAD • Non-stop
Nonstop flights
Every day
You can fly direct with United Airlines. Average duration is 3h 05m
Direct flights
+1
Direct flights
+1
Top routes
IAH - IAD
Cheapest • 14% average savings
HOU - IAD
Most popular
Insights
Insights
When to book
11 weeks
in advance
Our data shows that travelers who book at least 11 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
When to travel
August
Cheapest • 19% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Orlando (MCO)
Cheapest • Avg $266 (round-trip)
Dallas/Fort Worth (DFW)
Shortest trip • 5h 21m (one-way)
Insights
Insights
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We hope you love your trip to Washington, D.C. Dulles Intl Airport!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Houston to Dulles Intl

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Houston to Dulles Intl

Sat, Dec 19 - Thu, Dec 24
Frontier Logo
2:51 pm - 12:51 amIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
9h 00m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
8:51 pm - 5:46 amIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
9h 55m1 stop Las Vegas Harry Reid Intl
$232Frontier
Tue, Nov 24 - Mon, Nov 30
Frontier Logo
9:39 am - 7:27 pmIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
8h 48m1 stop Miami
Frontier Logo
3:58 pm - 4:00 pmIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
25h 02m1 stop Fort Lauderdale
$237Frontier
Tue, Nov 24 - Tue, Dec 1
Frontier Logo
9:39 am - 7:27 pmIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
8h 48m1 stop Miami
Frontier Logo
11:00 am - 8:36 amIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
22h 36m2 stops Miami Atlanta Hartsfield-Jackson
$238Frontier
Thu, Dec 10 - Sun, Dec 13
Multiple Airlines Logo
5:01 pm - 2:32 pmIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
20h 31m2 stops Fort Lauderdale Jacksonville
Multiple Airlines Logo
10:35 pm - 8:45 amIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
11h 10m1 stop Atlanta Hartsfield-Jackson
$240Multiple Airlines
Thu, Nov 26 - Mon, Nov 30
Multiple Airlines Logo
3:52 pm - 5:56 pmIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
25h 04m2 stops Orlando Blountville Tri Cities TN/VA
Multiple Airlines Logo
6:50 am - 1:53 pmIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
8h 03m1 stop Atlanta Hartsfield-Jackson
$262Multiple Airlines
Tue, Nov 24 - Mon, Nov 30
Multiple Airlines Logo
9:39 am - 7:27 pmIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
8h 48m1 stop Miami
Multiple Airlines Logo
6:36 pm - 1:17 pmIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
19h 41m2 stops Blountville Tri Cities TN/VA Orlando
$277Multiple Airlines
Fri, Feb 12 - Mon, Feb 15
United Airlines Logo
4:45 pm - 8:49 pmIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
3h 04mnonstop
United Airlines Logo
5:53 pm - 8:19 pmIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
3h 26mnonstop
$297United Airlines
Sat, Dec 12 - Tue, Dec 15
United Airlines Logo
7:20 am - 11:26 amIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
3h 06mnonstop
United Airlines Logo
6:00 am - 8:36 amIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
3h 36mnonstop
$297United Airlines
Sat, Dec 5 - Mon, Dec 7
Delta Logo
12:10 pm - 8:11 pmHOU  Houston Hobby-IAD Washington, D.C. Dulles Intl
7h 01m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:02 pm - 11:31 pmIAD  Washington, D.C. Dulles Intl-HOU Houston Hobby
7h 29m1 stop Atlanta Hartsfield-Jackson
$317Delta
Wed, Jan 13 - Sat, Jan 16
Delta Logo
6:00 am - 2:04 pmHOU  Houston Hobby-IAD Washington, D.C. Dulles Intl
7h 04m1 stop Atlanta Hartsfield-Jackson
Delta Logo
4:30 pm - 9:49 pmIAD  Washington, D.C. Dulles Intl-HOU Houston Hobby
6h 19m1 stop Atlanta Hartsfield-Jackson
$317Delta
Booking Insights

Price, demand and travel trends for Houston to Washington, D.C. Dulles Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Houston to Washington, D.C. Dulles Intl Airport?

Round-trip flights from Houston to Washington, D.C. Dulles Intl Airport typically range from $352 to $582. The lowest price found in the past 5 days was $232, on Frontier.

What's the cheapest day of the week to fly from Houston to Washington, D.C. Dulles Intl Airport?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Houston to Washington, D.C. Dulles Intl Airport. It’s 11% cheaper than the average day, while Monday is the most expensive, with prices 39% higher.

What’s the cheapest month to fly from Houston to Washington, D.C. Dulles Intl Airport?

•August is the cheapest month to fly from Houston to Washington, D.C. Dulles Intl Airport at $359 round-trip.
•February ($537) and June ($522) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 49% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Houston to Washington, D.C. Dulles Intl Airport the cheapest?

Flights from Houston to Washington, D.C. Dulles Intl Airport are cheapest 11 weeks before departure. Booking in this window typically costs about 41% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Expert advice

Expert advice for your flight from Houston to Dulles Intl

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
John Walton

John Walton

Expert on IAH

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more

Key details for Houston to Washington, D.C. Dulles Intl Airport flights

Low season

March

Cheapest flight

$115
Beat the crowds with an average 38% drop in travelers.
The most popular month to fly with an average 33% increase in travelers.
One-way flight from Houston George Bush Intcntl Airport to Washington, D.C. Dulles Intl Airport

When to book flights from Houston to Dulles Intl

Are your dates flexible? Find out the best times to travel from Houston to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Houston to Washington, D.C. Dulles Intl Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Houston to Washington, D.C. Dulles Intl Airport?

    These are the earliest and latest flight times available from Houston to Washington, D.C. Dulles Intl Airport:

    • Earliest: departs at 7:20 am and lands at 10:25 am
    • Latest: departs at 8:40 pm and lands at 11:45 pm.

    The flight takes about 3h 05m.

  • What cabin classes can I book on flights from Houston to Washington, D.C. Dulles Intl Airport?

    Two cabin classes are available on flights from Houston to Washington, D.C. Dulles Intl Airport:

    • Economy Class
    • First Class

  • How long is a flight from Houston to Washington, D.C. Dulles Intl Airport?

    A nonstop flight from Houston to Washington, D.C. Dulles Intl Airport takes 3h 05m, covering 1,199 miles.

  • Do I need a passport to fly from Houston to Washington, D.C. Dulles Intl Airport?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Houston to Washington, D.C. Dulles Intl Airport flight?

    Round-trip flights from Houston to Washington, D.C. Dulles Intl Airport range from $352 to $582, with an average of $441 over the past 12 months. Anything below $352 counts as a good deal.

  • How expensive are last-minute Houston to Washington, D.C. Dulles Intl Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 43% above the $441 route average. Book 11 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Houston to Washington, D.C. Dulles Intl Airport?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $266 round-trip via Orlando (MCO), compared to $482 for nonstop.

  • What is the standard checked-bag allowance on flights from Houston to Washington, D.C. Dulles Intl Airport?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • How are flight departures from Houston to Washington, D.C. Dulles Intl Airport spread across the day?

    Morning is the busiest departure period on Houston to Washington, D.C. Dulles Intl Airport flights, with 40% of flights leaving in that window. Afternoon departures account for 40%, evening flights for 20%, and night flights for 0%.

  • Which airlines offer Wi-Fi on Houston to Washington, D.C. Dulles Intl Airport flights?

    JetBlue is the only airline on the Houston to Washington, D.C. Dulles Intl Airport route offering in-flight Wi-Fi. Pricing depends on fare class.

  • How are flight prices from Houston to Washington, D.C. Dulles Intl Airport looking right now?

    One-way fares from Houston to Washington, D.C. Dulles Intl Airport are currently lower than usual. Average one-way flight prices are about $141, which is 50% below the typical average for this route.

  • What car rental options are available at Washington, D.C. Dulles Intl Airport (IAD)?

    Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates averaging $70 for economy cars. Top options include:

    • Hertz
    • Dollar
    • Budget
    • Sixt
    • Thrifty

  • Which airports can I use when flying from Houston to Washington, D.C. Dulles Intl Airport?

    Flights from Houston to Washington, D.C. Dulles Intl Airport may depart from several airports in Houston area, including Houston Hobby (HOU) and Houston George Bush Intcntl (IAH). Flights usually arrive at Washington, D.C. Dulles Intl (IAD).

  • Which airports do connecting flights from Houston to Washington, D.C. Dulles Intl Airport pass through?

    One-stop flights from Houston to Washington, D.C. Dulles Intl Airport most commonly connect through:

    • Atlanta Hartsfield-Jackson (ATL) - 92% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 3% of one-stop connections
    • Charlotte Douglas (CLT) - 2% of one-stop connections
    • Fort Lauderdale (FLL) - 2% of one-stop connections

  • Can I save money by using flexible dates for flights from Houston to Washington, D.C. Dulles Intl Airport?

    Yes. Flexible dates can save you up to 37% on flights from Houston to Washington, D.C. Dulles Intl Airport. Wednesday is the cheapest departure day at $394 round-trip on average, while Monday is the most expensive at $617, a difference of $223.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Houston to Washington, D.C. Dulles Intl Airport?

    Only United Airlines operates flights between Houston and Washington, D.C. Dulles Intl Airport.

  • How much time can I save by choosing a different layover airport from Houston to Washington, D.C. Dulles Intl Airport?

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 5h 21m, compared with 5h 44m via Charlotte Douglas (CLT) and 8h 48m via Atlanta Hartsfield-Jackson (ATL).

  • What is the time difference between Houston and Washington, D.C. Dulles Intl Airport?

    Washington, D.C. Dulles Intl Airport is 1 hour ahead of Houston (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Washington, D.C. Dulles Intl Airport?

    Some of the most popular sights in Washington, D.C. Dulles Intl Airport are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. Dulles Intl Airport on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Houston to Washington, D.C. Dulles Intl Airport flights?

    Among airlines operating Houston to Washington, D.C. Dulles Intl Airport flights:

    • United Airlines: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Houston to Washington, D.C. Dulles Intl Airport flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a cabin bag and a checked bag in Economy Class
    • JetBlue: a cabin bag in Economy Class class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking Houston to Washington, D.C. Dulles Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Monday. On this route, Wednesday flights average $394, about $223 less than Monday fares (36% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 11 weeks before you fly. On this route, that window historically saves about 41% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Houston to Washington, D.C. Dulles Intl Airport trip for August. Fares historically average $359 round-trip in that month - typically $178 less than the most expensive month, which is February (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Orlando Airport (MCO) can be cheaper than flying direct. The cheapest layover option averages $266 round-trip on this route - about $216 less than direct flights (based on the last 12 months).

Prefer to fly direct from Houston to Washington Dulles Airport?

 
Find which airlines fly direct from Houston to Washington, D.C. Dulles Intl Airport, which days they fly and book direct flights.

Direct departures

Houston to Washington, D.C. Dulles Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Washington, D.C. Dulles Intl to Houston

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

More options for your flight from Houston to Dulles Intl

Complete your trip to Washington, D.C. with a hotel stay or car rental

Car rentals in Washington, D.C.
Hotels in Washington, D.C.
Vacations in Washington, D.C.