What are the cheapest airlines to fly from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport one-way?

To fly one-way, consider booking your trip with Allegiant Air, which is currently one of the cheapest options available, starting at $104. Delta flights start at $119 while deals on Southwest start at $143 one-way.

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

Travelers seeking maximum savings on their Houston Hobby Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport?

The most popular airlines flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport are American Airlines, Delta and Frontier. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport?

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 49% when planning your travel around this day of the week.

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

The best pricing can be found in the month of October. Prices to Washington, D.C. Dulles Intl Airport from Houston Hobby Airport average $277. You can even find prices in October for less than $277, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $92. The month of March appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from Houston Hobby Airport. Flying in the targeted month can save you up to 20%.

Can I find deals for flights from Hobby to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Hobby to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Hobby to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hobby to Dulles Intl.

Can I find deals for business class flights from Hobby to Dulles Intl?

Yes. Cheapflights offers flight deals from Hobby to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$104+ Flights from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport

Q: How far in advance should I book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport?

To save up to 131% on this flight, we recommend booking at least 55 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport from $231 1-2 weeks out and tickets from $365 for flights departing within the next 72 hours.

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Houston Hobby to Washington, D.C. Dulles Intl are usually found in September or January, booked 67 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Hobby to Dulles Intl

Round-trip from	$237 (Southwest)
One-way from	$104 (Mytrip)
Popular in	November
Cheapest in	September
Average price	$349

From Houston Hobby to Washington, D.C. Dulles Intl

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One-way flight from Houston Hobby to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($34 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

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Average for round-trip flights in June 2025

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Find flight deals from Hobby to Dulles Intl

Cheapest flights from Hobby to Dulles Intl
Explore the most affordable flight options available from Hobby to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Tue 9/98:05 amHOU - IAD

1 stop7h 10mSouthwest

Tue 11/187:40 amIAD - HOU

1 stop9h 35mSouthwest

Deal found 6/9

$237

Thu 9/251:00 pmHOU - IAD

1 stop7h 13mDelta

Sat 9/275:25 pmIAD - HOU

1 stop5h 15mDelta

Deal found 6/10

$244

Thu 7/178:40 pmHOU - IAD

1 stop14h 49mSun Country Air

Sun 7/206:00 amIAD - HOU

1 stop12h 06mSun Country Air

Deal found 6/12

$315

Mon 9/224:28 pmHOU - IAD

1 stop5h 21mAmerican Airlines

Tue 9/2311:47 amIAD - HOU

1 stop5h 08mAmerican Airlines

Deal found 6/11

$317

Sun 7/206:06 pmHOU - IAD

1 stop16h 37mMultiple Airlines

Thu 7/249:05 pmIAD - HOU

2 stops22h 08mMultiple Airlines

Deal found 6/10

$321

Fri 8/88:03 pmHOU - IAD

2 stops23h 27mAllegiant Air

Sun 8/109:25 amIAD - HOU

2 stops33h 48mAllegiant Air

Deal found 6/10

$375

Best flights from Hobby to Dulles Intl
Discover carefully curated flight deals from Hobby to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Tue 9/98:05 amHOU - IAD

1 stop7h 10mSouthwest

Tue 11/187:40 amIAD - HOU

1 stop9h 35mSouthwest

Deal found 6/9

$237

Tue 8/121:05 pmHOU - IAD

1 stop4h 44mDelta

Sat 8/165:25 pmIAD - HOU

1 stop6h 06mDelta

Deal found 6/11

$244

Thu 7/178:40 pmHOU - IAD

1 stop14h 49mSun Country Air

Sun 7/206:00 amIAD - HOU

1 stop12h 06mSun Country Air

Deal found 6/12

$315

Sun 7/206:06 pmHOU - IAD

1 stop16h 37mMultiple Airlines

Thu 7/249:05 pmIAD - HOU

2 stops22h 08mMultiple Airlines

Deal found 6/10

$321

Tue 8/58:58 amHOU - IAD

1 stop12h 48mAmerican Airlines

Thu 8/76:34 amIAD - HOU

2 stops8h 12mAmerican Airlines

Deal found 6/11

$335

Fri 8/88:03 pmHOU - IAD

2 stops23h 27mAllegiant Air

Sun 8/109:25 amIAD - HOU

2 stops33h 48mAllegiant Air

Deal found 6/10

$375

Last-minute flights from Hobby to Dulles Intl
Discover last-minute flight deals from Hobby to Dulles Intl. Data last updated June 12, 2025 and is based on user searches.

Wed 6/1810:40 amHOU - IAD

1 stop6h 45mSouthwest

Wed 6/252:05 pmIAD - HOU

1 stop8h 00mSouthwest

Deal found 6/11

$583

Fri 6/208:30 amHOU - IAD

1 stop4h 53mMultiple Airlines

Sun 6/2212:46 pmIAD - HOU

1 stop29h 14mMultiple Airlines

Deal found 6/10

$499

Fri 6/204:26 pmHOU - IAD

1 stop5h 13mAmerican Airlines

Fri 7/46:27 amIAD - HOU

1 stop8h 31mAmerican Airlines

Deal found 6/11

$503

Fri 6/206:30 pmHOU - IAD

1 stop16h 19mSun Country Air

Sun 6/2212:46 pmIAD - HOU

1 stop29h 14mSun Country Air

Deal found 6/11

$545

Sat 6/2110:00 amHOU - IAD

1 stop5h 38mDelta

Thu 6/266:00 amIAD - HOU

1 stop7h 10mDelta

Deal found 6/11

$589

Mon 6/308:45 amHOU - IAD

2 stops8h 13mAllegiant Air

Sun 7/69:08 pmIAD - HOU

2 stops22h 05mAllegiant Air

Deal found 6/9

$509

Mon 7/145:00 amHOU - IAD

1 stop4h 59mAmerican Airlines

Thu 7/176:44 pmIAD - HOU

1 stop6h 06mAmerican Airlines

Deal found 6/11

$357

Thu 7/178:40 pmHOU - IAD

1 stop14h 49mSun Country Air

Sun 7/206:00 amIAD - HOU

1 stop12h 06mSun Country Air

Deal found 6/12

$315

Sun 7/206:06 pmHOU - IAD

1 stop16h 37mMultiple Airlines

Thu 7/249:05 pmIAD - HOU

2 stops22h 08mMultiple Airlines

Deal found 6/10

$321

Mon 7/215:25 amHOU - IAD

1 stop6h 55mSouthwest

Thu 7/245:00 amIAD - HOU

1 stop6h 50mSouthwest

Deal found 6/11

$289

Tue 7/2210:02 amHOU - IAD

1 stop5h 23mDelta

Thu 8/146:00 amIAD - HOU

1 stop7h 10mDelta

Deal found 6/10

$263

One-way flights from Hobby to Dulles Intl
Search for one-way flight options from Hobby to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Fri 6/208:30 amHOU - IAD

1 stop4h 53mAllegiant Air

Deal found 6/9

$104

Wed 8/1310:44 amHOU - IAD

1 stop4h 46mDelta

Deal found 6/11

$119

Fri 7/113:25 pmHOU - IAD

1 stop7h 05mSouthwest

Deal found 6/11

$143

Sun 7/206:06 pmHOU - IAD

1 stop16h 37mSun Country Air

Deal found 6/10

$148

Mon 8/186:00 amHOU - IAD

2 stops8h 19mAmerican Airlines

Deal found 6/10

$164

Fri 6/206:30 pmHOU - IAD

3 stops25h 22mMultiple Airlines

Deal found 6/10

$465

Sat 6/288:23 pmHOU - IAD

2 stops35h 17mQatar Airways

Deal found 6/11

$1,816

Cheapflights Fare Finder

Use the filters below to find and compare flights from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 9/9

8:05 am-4:15 pm

1 stop7h 10m

Washington, D.C. Dulles Intl

Tue 11/18

7:40 am-4:15 pm

1 stop9h 35m

$237

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 8/12

1:05 pm-6:49 pm

1 stop4h 44m

Washington, D.C. Dulles Intl

Sat 8/16

5:25 pm-10:31 pm

1 stop6h 06m

$244

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sun 7/13

6:18 pm-11:43 am

1 stop16h 25m

Washington, D.C. Dulles Intl

Thu 7/17

6:05 am-7:42 pm

1 stop14h 37m

$295

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sun 7/20

6:06 pm-11:43 am

1 stop16h 37m

Washington, D.C. Dulles Intl

Thu 7/24

9:05 pm-6:13 pm

2 stops22h 08m

$321

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 8/5

8:58 am-10:46 pm

1 stop12h 48m

Washington, D.C. Dulles Intl

Thu 8/7

6:34 am-1:46 pm

2 stops8h 12m

$335

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Fri 8/8

8:03 pm-8:30 pm

2 stops23h 27m

Washington, D.C. Dulles Intl

Sun 8/10

9:25 am-6:13 pm

2 stops33h 48m

$375

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Fri 6/20

8:30 am-2:23 pm

1 stop4h 53m

$104

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 8/13

10:44 am-4:30 pm

1 stop4h 46m

$119

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Fri 7/11

3:25 pm-11:30 pm

1 stop7h 05m

$143

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sun 7/20

6:06 pm-11:43 am

1 stop16h 37m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 13 results

Best time to book a flight from Hobby to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Hobby with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport?

To ensure you get the cheapest price possible for a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport, you should look to book at least 67 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from HOU to IAD?

It’s optimal to fly from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in the afternoon. By choosing this option you can save up to 9% on the cost of your flight, compared to a flight in the morning.

Rainfall in Dulles Intl by month

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

To help decide which airline to fly from Houston to Washington, D.C., see what other customers have to say about Southwest, Delta and Qatar Airways. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,287 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Delta

8.0

Very good

7,950 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Qatar Airways

7.4

Good

3,584 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Allegiant Air

7.3

Good

725 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

What are the cheapest airlines flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport round-trip?
Flying on Southwest is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $237. Additional round-trip tickets that might be worth considering are offered by Delta and Sun Country Air, with the lowest prices starting at $244 and $315, respectively. Southwest is currently priced 36% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport one-way?
To fly one-way, consider booking your trip with Allegiant Air, which is currently one of the cheapest options available, starting at $104. Delta flights start at $119 while deals on Southwest start at $143 one-way.
Can I find deals for flights from Hobby to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Hobby to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Hobby to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hobby to Dulles Intl.
Can I find deals for business class flights from Hobby to Dulles Intl?
Yes. Cheapflights offers flight deals from Hobby to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Reston

National Harbor

Springfield

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Top 5 airlines flying from Hobby to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$49	Average$189	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$180	Average$244	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$233	Average$386	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$268	Average$343	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$278	Average$338	FlexibilityNo cancel fee	On-timeN/A

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$104+ Cheap flights from Hobby (HOU) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Hobby to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Houston Hobby to Washington, D.C. Dulles Intl are usually found in September or January, booked 67 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Hobby to Dulles Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Hobby to Dulles Intl

Cheapest flights from Hobby to Dulles IntlExplore the most affordable flight options available from Hobby to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Explore the most affordable flight options available from Hobby to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Hobby to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Hobby with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Hobby to Dulles Intl. Price data was last updated on June 9, 2025.

What is the cheapest month to book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to fly from HOU to IAD?

Find hourly flight availability from Hobby to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Dulles Intl

Related info for your journey

Find useful and relevant information for your journey from Hobby to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport round-trip?

What are the cheapest airlines to fly from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport one-way?

Can I find deals for flights from Hobby to Dulles Intl that include hotel bookings?

How can I find direct flights from Hobby to Dulles Intl?

Can I find deals for business class flights from Hobby to Dulles Intl?

What is the cheapest month to book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Houston Hobby Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Hobby to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Hobby to Dulles Intl

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Cheapest flights from Hobby to Dulles Intl
Explore the most affordable flight options available from Hobby to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.