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 American Airlines, which is currently one of the cheapest options available, starting at $142. Delta flights start at $149 while deals on Southwest start at $177 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.

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.

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).

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 $276. You can even find prices in October for less than $276, 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.

$142+ 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 133% 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 $225 1-2 weeks out and tickets from $371 for flights departing within the next 72 hours.

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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Houston Hobby to Washington, D.C. Dulles Intl are usually found in June or September, 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	$286 (Mytrip)
One-way from	$142 (American Airlines)
Popular in	November
Cheapest in	June
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. 12% potential increase in price ($48 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

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Average for round-trip flights in July 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 July 31, 2025.

Fri 8/158:02 pmHOU - IAD

2 stops23h 23mAllegiant Air

Mon 8/183:13 pmIAD - HOU

1 stop4h 59mAllegiant Air

Deal found 7/31

$281

Thu 8/147:41 pmHOU - IAD

1 stop15h 14mMultiple Airlines

Mon 8/183:13 pmIAD - HOU

1 stop4h 59mMultiple Airlines

Deal found 7/29

$286

Fri 8/226:34 pmHOU - IAD

1 stop4h 47mDelta

Sun 8/246:00 amIAD - HOU

1 stop7h 10mDelta

Deal found 7/31

$297

Sat 8/308:51 amHOU - IAD

1 stop9h 09mAmerican Airlines

Sun 8/316:27 amIAD - HOU

1 stop14h 28mAmerican Airlines

Deal found 7/29

$303

Fri 8/292:55 pmHOU - IAD

1 stop6h 55mSouthwest

Mon 9/82:10 pmIAD - HOU

1 stop7h 20mSouthwest

Deal found 7/29

$315

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 July 31, 2025.

Fri 8/158:02 pmHOU - IAD

2 stops23h 23mAllegiant Air

Mon 8/183:13 pmIAD - HOU

1 stop4h 59mAllegiant Air

Deal found 7/31

$281

Thu 8/147:41 pmHOU - IAD

1 stop15h 14mMultiple Airlines

Mon 8/183:13 pmIAD - HOU

1 stop4h 59mMultiple Airlines

Deal found 7/29

$286

Fri 8/226:34 pmHOU - IAD

1 stop4h 47mDelta

Sun 8/246:00 amIAD - HOU

1 stop7h 10mDelta

Deal found 7/31

$297

Sat 8/308:51 amHOU - IAD

1 stop9h 09mAmerican Airlines

Sun 8/316:27 amIAD - HOU

1 stop14h 28mAmerican Airlines

Deal found 7/29

$303

Fri 8/292:55 pmHOU - IAD

1 stop6h 55mSouthwest

Mon 9/82:10 pmIAD - HOU

1 stop7h 20mSouthwest

Deal found 7/29

$315

Last-minute flights from Hobby to Dulles Intl
Discover last-minute flight deals from Hobby to Dulles Intl. Data last updated July 31, 2025 and is based on user searches.

Tue 8/55:00 amHOU - IAD

1 stop4h 59mAmerican Airlines

Tue 8/1211:51 amIAD - HOU

1 stop7h 09mAmerican Airlines

Deal found 7/29

$634

Wed 8/61:35 pmHOU - IAD

1 stop7h 30mSouthwest

Tue 8/125:45 amIAD - HOU

1 stop9h 15mSouthwest

Deal found 7/28

$594

Thu 8/74:16 pmHOU - IAD

1 stop7h 18mDelta

Sun 8/315:25 pmIAD - HOU

1 stop6h 06mDelta

Deal found 7/30

$484

Thu 8/76:24 pmHOU - IAD

1 stop17h 07mSun Country Air

Sat 8/912:58 pmIAD - HOU

1 stop28h 32mSun Country Air

Deal found 7/29

$545

Thu 8/76:24 pmHOU - IAD

2 stops22h 39mMultiple Airlines

Sun 8/109:05 pmIAD - HOU

2 stops22h 08mMultiple Airlines

Deal found 7/31

$638

Thu 8/147:41 pmHOU - IAD

1 stop15h 14mMultiple Airlines

Mon 8/183:13 pmIAD - HOU

1 stop4h 59mMultiple Airlines

Deal found 7/29

$286

Fri 8/158:02 pmHOU - IAD

2 stops23h 23mAllegiant Air

Mon 8/183:13 pmIAD - HOU

1 stop4h 59mAllegiant Air

Deal found 7/31

$281

Fri 8/226:34 pmHOU - IAD

1 stop4h 47mDelta

Sun 8/246:00 amIAD - HOU

1 stop7h 10mDelta

Deal found 7/31

$297

Fri 8/292:55 pmHOU - IAD

1 stop6h 55mSouthwest

Mon 9/82:10 pmIAD - HOU

1 stop7h 20mSouthwest

Deal found 7/29

$315

Sat 8/308:51 amHOU - IAD

1 stop9h 09mAmerican Airlines

Sun 8/316:27 amIAD - HOU

1 stop14h 28mAmerican Airlines

Deal found 7/29

$303

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 July 31, 2025.

Sat 8/308:51 amHOU - IAD

1 stop9h 09mAmerican Airlines

Deal found 7/29

$142

Wed 8/276:00 amHOU - IAD

1 stop7h 31mDelta

Deal found 7/31

$149

Sat 8/308:45 amHOU - IAD

2 stops13h 05mSouthwest

Deal found 7/29

$177

Thu 8/147:41 pmHOU - IAD

1 stop15h 14mSun Country Air

Deal found 7/29

$179

Fri 8/87:03 pmHOU - IAD

2 stops24h 27mAllegiant Air

Deal found 7/30

$223

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

Fri 8/15

8:02 pm-8:25 pm

2 stops23h 23m

Washington, D.C. Dulles Intl

Mon 8/18

3:13 pm-7:12 pm

1 stop4h 59m

$281

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 8/14

7:41 pm-11:55 am

1 stop15h 14m

Washington, D.C. Dulles Intl

Mon 8/18

3:13 pm-7:12 pm

1 stop4h 59m

$286

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Fri 8/22

6:34 pm-12:21 am

1 stop4h 47m

Washington, D.C. Dulles Intl

Sun 8/24

6:00 am-12:10 pm

1 stop7h 10m

$297

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sat 8/30

8:51 am-7:00 pm

1 stop9h 09m

Washington, D.C. Dulles Intl

Sun 8/31

6:27 am-7:55 pm

1 stop14h 28m

$303

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Fri 8/29

2:55 pm-10:50 pm

1 stop6h 55m

Washington, D.C. Dulles Intl

Mon 9/8

2:10 pm-8:30 pm

1 stop7h 20m

$315

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sat 8/30

8:51 am-7:00 pm

1 stop9h 09m

$142

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 8/27

6:00 am-2:31 pm

1 stop7h 31m

$149

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sat 8/30

8:45 am-10:50 pm

2 stops13h 05m

$177

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 8/14

7:41 pm-11:55 am

1 stop15h 14m

$179

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Fri 8/8

7:03 pm-8:30 pm

2 stops24h 27m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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, July is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

Reviews of airlines servicing Dulles Intl

Get a feel of what it's like to fly with Southwest, Delta, and American Airlines from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Southwest

8.0

Very good

4,246 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

Delta

8.0

Very good

7,981 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

Allegiant Air

7.2

Good

702 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

Sun Country Air

6.9

Okay

334 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

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 Allegiant Air is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $289. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $297 and $303, respectively. Allegiant Air is currently priced 19% 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 American Airlines, which is currently one of the cheapest options available, starting at $142. Delta flights start at $149 while deals on Southwest start at $177 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, July is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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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Top 5 airlines flying from Hobby to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$54	Average$264	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$180	Average$240	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$237	Average$382	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$269	Average$288	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$278	Average$343	FlexibilityNo cancel fee	On-time71%

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$142+ 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 8/30. 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 June or September, 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 July 31, 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 July 31, 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 July 25, 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 July 31, 2025.

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 Washington, D.C. Dulles Intl 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 July 31, 2025.