IAD

$149 Find Cheap Flights from Houston to Washington Dulles Airport - Compare and Save

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Everything you should know

Cheapest round-trip
$219
Typical prices: $321-$555
Frontier
Fri 11/16Thu 11/22
IAH - IAD • 1 stop
Cheapest non-stop
$243
Typical prices: $365-$582
United Airlines
Wed 10/17Sat 10/20
IAH - IAD • Non-stop
Nonstop flights
Every day
You can fly direct with United Airlines. Average duration is 3h 06m
Direct flights
+1
Direct flights
+1
Top routes
HOU - IAD
Cheapest • 34% average savings
IAH - IAD
Most popular
Insights
Insights
When to book
15 weeks
in advance
Our data shows that travelers who book at least 15 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
When to travel
October
Cheapest • 26% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Orlando (MCO)
Cheapest • Avg $218 (round-trip)
Charlotte Douglas (CLT)
Shortest trip • 5h 44m (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

Mon, Nov 16 - Sun, Nov 22
Frontier Logo
6:05 am - 5:12 pmIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
10h 07m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
10:47 pm - 11:04 amIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
13h 17m1 stop Atlanta Hartsfield-Jackson
$219Frontier
Sat, Oct 10 - Mon, Oct 19
Frontier Logo
8:35 pm - 10:17 amIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
12h 42m1 stop Orlando
Frontier Logo
9:06 pm - 7:19 amIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
11h 13m1 stop Atlanta Hartsfield-Jackson
$220Frontier
Fri, Nov 6 - Sun, Nov 8
Frontier Logo
8:18 am - 8:11 pmIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
10h 53m1 stop Fort Lauderdale
Frontier Logo
9:06 pm - 7:23 amIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
11h 17m1 stop Atlanta Hartsfield-Jackson
$220Frontier
Wed, Dec 2 - Sat, Dec 5
United Airlines Logo
4:45 pm - 8:49 pmIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
3h 04mnonstop
United Airlines Logo
5:52 pm - 8:28 pmIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
3h 36mnonstop
$243United Airlines
Tue, Oct 20 - Tue, Oct 27
United Airlines Logo
2:51 pm - 7:02 pmIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
3h 11mnonstop
United Airlines Logo
6:00 am - 8:37 amIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
3h 37mnonstop
$243United Airlines
Sat, Oct 24 - Tue, Oct 27
United Airlines Logo
4:56 pm - 9:08 pmIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
3h 12mnonstop
United Airlines Logo
2:38 pm - 5:15 pmIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
3h 37mnonstop
$243United Airlines
Tue, Oct 20 - Tue, Oct 20
Delta Logo
5:29 am - 11:32 amIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
5h 03m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:12 pm - 10:02 pmIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
4h 50m1 stop Atlanta Hartsfield-Jackson
$263Delta
Sat, Oct 24 - Wed, Oct 28
Delta Logo
5:02 pm - 12:42 amIAH  Houston George Bush Intcntl-IAD Washington, D.C. Dulles Intl
6h 40m1 stop Atlanta Hartsfield-Jackson
Delta Logo
10:57 am - 6:21 pmIAD  Washington, D.C. Dulles Intl-IAH Houston George Bush Intcntl
8h 24m1 stop Detroit Metropolitan Wayne County
$263Delta
Wed, Oct 28 - Mon, Nov 2
American Airlines Logo
6:00 am - 2:18 pmHOU  Houston Hobby-IAD Washington, D.C. Dulles Intl
7h 18m1 stop Dallas/Fort Worth
American Airlines Logo
7:14 am - 1:37 pmIAD  Washington, D.C. Dulles Intl-HOU Houston Hobby
7h 23m1 stop Dallas/Fort Worth
$333American Airlines
Mon, Oct 26 - Fri, Oct 30
American Airlines Logo
5:06 pm - 11:23 pmHOU  Houston Hobby-IAD Washington, D.C. Dulles Intl
5h 17m1 stop Dallas/Fort Worth
American Airlines Logo
7:13 pm - 11:49 pmIAD  Washington, D.C. Dulles Intl-HOU Houston Hobby
5h 36m1 stop Dallas/Fort Worth
$333American Airlines
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 from Houston to Washington, D.C. Dulles Intl Airport 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 start at $219. Prices are below average for this route right now, with typical round-trip fares ranging from $321 to $555. The lowest price found in the past 5 days was $219 on Frontier.

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

Thursday is the cheapest day of the week to fly from Houston to Washington, D.C. Dulles Intl Airport, it is 12% cheaper than the average day. Monday is the most expensive day with flight prices 29% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

•October is the cheapest month to fly from Houston to Washington, D.C. Dulles Intl Airport at $313 round-trip.
•June ($522) and March ($517) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 66% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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

Flights from Houston to Washington, D.C. Dulles Intl Airport are cheapest 15 weeks before departure. Booking in this window typically costs about 49% 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

$149
Best time to beat the crowds but there is an average 22% increase in price.
Most popular time to fly with an average 3% increase in price.
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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 free seat selection

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

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

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

  • 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 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 First Class
    • JetBlue: a cabin bag in Economy Class class

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

  • 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 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 $218 round-trip via Orlando (MCO), compared to $458 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.

  • 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) - 95% of one-stop connections
    • Orlando (MCO) - 2% of one-stop connections
    • Charlotte Douglas (CLT) - 2% of one-stop connections
    • Dallas/Fort Worth (DFW) - 2% of one-stop connections

    Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 32% on the Houston to Washington, D.C. Dulles Intl Airport route. Thursday is the cheapest departure day at $377 round-trip on average, while Monday is the most expensive at $547, a difference of $170. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

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

  • 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.

  • 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 10:26 am
    • Latest: departs at 8:40 pm and lands at 11:46 pm.

    The flight takes about 3h 06m.

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

    Last-minute fares on this route - booked within 2 weeks of departure - run 52% above the route average of $424. Book 15 weeks before departure for the lowest fares.

  • 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 06m, 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 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 $152, which is 39% below the typical average for this route.

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

    Flying via Charlotte Douglas (CLT) gives the shortest average 1-stop total travel time at 5h 44m, compared with 5h 44m via Dallas/Fort Worth (DFW) and 7h 41m via Orlando (MCO).

  • 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 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 starting from around $24 for economy cars. Top options include:
    • Dollar
    • Budget
    • Hertz
    • Sixt
    • Thrifty

  • 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 $321 to $555, with an average of $424 over the past 12 months. Anything below $321 counts as a good deal.

  • 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.

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 can be flexible, aim for a Thursday departure instead of Monday. On this route, Thursday flights average $377 - about $170 less than Monday (31% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 15 weeks before you fly. On this route, that window historically saves about 49% 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 October. Fares historically average $313 round-trip in that month - typically $209 less than the most expensive month, which is June (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 $218 round-trip on this route - about $240 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

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