In terms of precipitation, rainfall in District of Columbia 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 District of Columbia when rainfall is around 2.6 in.

If weather is an important factor for your trip to District of Columbia, 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 George Bush Intcntl Airport to District of Columbia?

When booking a flight from Houston George Bush Intcntl Airport to District of Columbia, you may want to consider flying on American Airlines, Delta or Frontier as they are the most popular for this route.

What is the cheapest month to fly from Houston George Bush Intcntl Airport to District of Columbia?

The best pricing can be found in the month of October. Prices to District of Columbia from Houston George Bush Intcntl Airport average $276. You can even find prices in October for less than $276, as users have found deals to District of Columbia from as low as $77. The month of March appears to be one of the more expensive times to travel to District of Columbia from Houston George Bush Intcntl Airport. Flying in the targeted month can save you up to 21%.

How can I find direct flights from George Bush Intcntl to District of Columbia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from George Bush Intcntl to District of Columbia.

Can I find deals for business class flights from George Bush Intcntl to District of Columbia?

Yes. Cheapflights offers flight deals from George Bush Intcntl to District of Columbia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$77+ Flights from Houston George Bush Intcntl Airport to District of Columbia

Q: How far in advance should I book a flight from Houston George Bush Intcntl Airport to District of Columbia?

To save up to 134% 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 George Bush Intcntl Airport to District of Columbia from $230 1-2 weeks out and tickets from $372 for flights departing within the next 72 hours.

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Cheap flight deals from George Bush Intcntl to District of Columbia

Round-trip from	$141 (Kiwi.com)
One-way from	$77 (Trip.com)
Popular in	March
Cheapest in	October
Average price	$233
Good round-trip deal	$289 or less
Good one-way deal	$148 or less

From Houston George Bush Intcntl to District of Columbia

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One-way flight from Houston George Bush Intcntl to District of Columbia

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Highest demand for flights based on searches. 5% potential increase in price ($15 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Price to beat on a round-trip flight from Houston George Bush Intcntl to District of Columbia.

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Price to beat on a one-way flight from Houston George Bush Intcntl to District of Columbia.

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Find flight deals from George Bush Intcntl to District of Columbia

Cheapest flights from George Bush Intcntl to District of Columbia
Explore the most affordable flight options available from George Bush Intcntl to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Tue 9/305:00 pmIAH - IAD

1 stop25h 55mMultiple Airlines

Tue 10/79:00 amIAD - IAH

1 stop14h 23mMultiple Airlines

Deal found 9/10

$141

Sat 10/1812:35 pmIAH - IAD

1 stop9h 54mFrontier

Sun 10/198:02 pmIAD - IAH

1 stop12h 02mFrontier

Deal found 9/11

$142

Sat 9/275:46 pmIAH - IAD

1 stop5h 09mFrontier

Sun 10/57:14 pmIAD - IAH

1 stop20h 50mFrontier

Deal found 9/10

$143

Wed 9/174:36 pmIAH - IAD

1 stop24h 48mFrontier

Sun 9/2110:09 pmIAD - IAH

1 stop18h 30mFrontier

Deal found 9/10

$144

Thu 9/256:05 amIAH - IAD

1 stop5h 50mMultiple Airlines

Sat 10/47:00 amIAD - IAH

1 stop16h 30mMultiple Airlines

Deal found 9/10

$145

Tue 9/1610:30 amIAH - IAD

1 stop8h 25mFrontier

Fri 9/193:15 pmIAD - IAH

1 stop19h 39mFrontier

Deal found 9/9

$146

Thu 10/26:05 amIAH - IAD

1 stop5h 50mFrontier

Sat 10/47:00 amIAD - IAH

1 stop11h 01mFrontier

Deal found 9/9

$147

Tue 9/306:07 pmIAH - DCA

Nonstop3h 03mUnited Airlines

Sat 10/256:00 amDCA - IAH

Nonstop3h 18mUnited Airlines

Deal found 9/11

$149

Wed 10/12:55 pmIAH - IAD

Nonstop3h 08mUnited Airlines

Wed 10/810:18 pmIAD - IAH

Nonstop3h 12mUnited Airlines

Deal found 9/10

$149

Fri 11/75:56 pmIAH - IAD

1 stop5h 15mFrontier

Sun 11/95:29 pmIAD - IAH

1 stop5h 34mFrontier

Deal found 9/10

$150

Fri 9/195:47 pmIAH - IAD

1 stop5h 28mFrontier

Mon 9/221:55 pmIAD - IAH

1 stop8h 58mFrontier

Deal found 9/10

$151

Sat 9/275:46 pmIAH - IAD

1 stop5h 09mFrontier

Fri 10/36:10 amIAD - IAH

1 stop11h 51mFrontier

Deal found 9/10

$152

Best flights from George Bush Intcntl to District of Columbia
Discover carefully curated flight deals from George Bush Intcntl to District of Columbia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Fri 10/176:07 pmIAH - DCA

Nonstop3h 03mUnited Airlines

Tue 10/217:59 pmDCA - IAH

Nonstop3h 14mUnited Airlines

Deal found 9/11

$165

Fri 10/36:15 amIAH - DCA

1 stop9h 44mFrontier

Sun 10/57:00 amDCA - IAH

1 stop29h 09mFrontier

Deal found 9/11

$167

Tue 11/411:49 amIAH - IAD

1 stop6h 36mDelta

Thu 11/136:00 amIAD - IAH

1 stop5h 51mDelta

Deal found 9/10

$237

Wed 10/227:30 amIAH - DCA

Nonstop3h 04mUnited Airlines

Sun 10/266:00 amDCA - IAH

Nonstop3h 36mUnited Airlines

Deal found 9/10

$165

Wed 10/17:30 amIAH - DCA

1 stop13h 29mFrontier

Sun 10/51:00 pmDCA - IAH

1 stop23h 09mFrontier

Deal found 9/11

$167

Sun 10/267:30 amIAH - DCA

Nonstop2h 59mUnited Airlines

Tue 10/286:00 amDCA - IAH

Nonstop3h 36mUnited Airlines

Deal found 9/11

$165

Thu 10/306:00 amIAH - DCA

1 stop14h 59mFrontier

Sun 11/28:00 amDCA - IAH

1 stop16h 39mFrontier

Deal found 9/11

$167

Wed 10/222:55 pmIAH - IAD

Nonstop3h 08mUnited Airlines

Sun 10/268:35 amIAD - IAH

Nonstop3h 29mUnited Airlines

Deal found 9/10

$165

Sun 11/25:00 amIAH - DCA

1 stop14h 59mFrontier

Wed 11/51:00 pmDCA - IAH

1 stop11h 39mFrontier

Deal found 9/11

$167

Thu 10/25:45 amIAH - IAD

1 stop4h 55mDelta

Sun 10/56:00 amIAD - IAH

1 stop5h 23mDelta

Deal found 9/10

$237

Thu 10/236:07 pmIAH - DCA

Nonstop3h 03mUnited Airlines

Mon 10/277:59 pmDCA - IAH

Nonstop3h 35mUnited Airlines

Deal found 9/11

$181

Fri 12/123:10 pmIAH - IAD

1 stop6h 58mDelta

Sun 12/147:01 amIAD - IAH

1 stop5h 26mDelta

Deal found 9/10

$237

Last-minute flights from George Bush Intcntl to District of Columbia
Discover last-minute flight deals from George Bush Intcntl to District of Columbia. Data last updated September 11, 2025 and is based on user searches.

Wed 9/174:36 pmIAH - IAD

1 stop24h 48mFrontier

Sun 9/2110:09 pmIAD - IAH

1 stop18h 30mFrontier

Deal found 9/10

$144

Fri 9/195:47 pmIAH - IAD

1 stop5h 28mFrontier

Mon 9/221:55 pmIAD - IAH

1 stop8h 58mFrontier

Deal found 9/10

$151

Wed 9/2410:30 amIAH - IAD

1 stop8h 25mFrontier

Sat 10/47:00 amIAD - IAH

1 stop11h 01mFrontier

Deal found 9/10

$153

Thu 9/256:05 amIAH - IAD

1 stop5h 50mMultiple Airlines

Tue 10/79:00 amIAD - IAH

1 stop14h 23mMultiple Airlines

Deal found 9/10

$145

Sat 9/275:46 pmIAH - IAD

1 stop5h 09mFrontier

Sun 10/57:14 pmIAD - IAH

1 stop20h 50mFrontier

Deal found 9/10

$143

Sat 9/275:46 pmIAH - IAD

1 stop5h 09mFrontier

Fri 10/36:10 amIAD - IAH

1 stop11h 51mFrontier

Deal found 9/10

$152

Tue 9/305:00 pmIAH - IAD

1 stop25h 55mMultiple Airlines

Tue 10/79:00 amIAD - IAH

1 stop14h 23mMultiple Airlines

Deal found 9/10

$141

Tue 9/306:07 pmIAH - DCA

Nonstop3h 03mUnited Airlines

Sat 10/256:00 amDCA - IAH

Nonstop3h 18mUnited Airlines

Deal found 9/11

$149

Tue 10/78:05 amIAH - IAD

1 stop10h 41mFrontier

Fri 10/103:10 pmIAD - IAH

1 stop18h 50mFrontier

Deal found 9/11

$150

Wed 10/82:55 pmIAH - IAD

Nonstop3h 08mUnited Airlines

Wed 10/156:01 amIAD - IAH

Nonstop3h 15mUnited Airlines

Deal found 9/11

$149

Sat 10/1812:35 pmIAH - IAD

1 stop9h 54mFrontier

Sun 10/198:02 pmIAD - IAH

1 stop12h 02mFrontier

Deal found 9/11

$142

Fri 10/241:32 pmIAH - IAD

1 stop5h 36mFrontier

Fri 10/315:34 pmIAD - IAH

1 stop5h 32mFrontier

Deal found 9/10

$146

One-way flights from George Bush Intcntl to District of Columbia
Search for one-way flight options from George Bush Intcntl to District of Columbia. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Wed 10/110:30 amIAH - IAD

1 stop8h 25mFrontier

Deal found 9/11

$77

Sat 10/118:00 pmIAH - IAD

1 stop17h 25mFrontier

Deal found 9/10

$78

Fri 9/195:47 pmIAH - IAD

1 stop5h 28mFrontier

Deal found 9/10

$79

Wed 10/12:20 pmIAH - DCA

1 stop7h 23mUnited Airlines

Deal found 9/11

$80

Mon 10/277:49 amIAH - IAD

1 stop12h 49mFrontier

Deal found 9/11

$82

Wed 9/1710:30 amIAH - IAD

1 stop8h 25mFrontier

Deal found 9/10

$83

Sun 11/1611:33 amIAH - IAD

1 stop9h 36mFrontier

Deal found 9/10

$85

Tue 9/307:31 pmIAH - IAD

2 stops23h 24mMultiple Airlines

Deal found 9/10

$86

Fri 10/310:49 amIAH - IAD

2 stops35h 07mMultiple Airlines

Deal found 9/9

$90

Thu 10/237:50 pmIAH - DCA

Nonstop3h 00mUnited Airlines

Deal found 9/11

$91

Mon 10/206:05 pmIAH - IAD

Nonstop3h 01mUnited Airlines

Deal found 9/10

$91

Fri 9/266:05 amIAH - IAD

1 stop5h 50mFrontier

Deal found 9/10

$96

Cheapflights Fare Finder

Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonWashington, D.C.

IAH - DCA

IAHDCA

Houston George Bush Intcntl

Fri 10/17

6:07 pm-10:10 pm

Nonstop3h 03m

Washington, D.C. Reagan-National

Tue 10/21

7:59 pm-10:13 pm

Nonstop3h 14m

$165

HoustonWashington, D.C.

IAH - DCA

IAHDCA

Houston George Bush Intcntl

Wed 10/22

7:30 am-11:34 am

Nonstop3h 04m

Washington, D.C. Reagan-National

Sun 10/26

6:00 am-8:36 am

Nonstop3h 36m

$165

HoustonWashington, D.C.

IAH - DCA

IAHDCA

Houston George Bush Intcntl

Sun 10/26

7:30 am-11:29 am

Nonstop2h 59m

Washington, D.C. Reagan-National

Tue 10/28

6:00 am-8:36 am

Nonstop3h 36m

$165

HoustonWashington, D.C.

IAH - IAD

IAHIAD

Houston George Bush Intcntl

Wed 10/22

2:55 pm-7:03 pm

Nonstop3h 08m

Washington, D.C. Dulles Intl

Sun 10/26

8:35 am-11:04 am

Nonstop3h 29m

$165

HoustonWashington, D.C.

IAH - DCA

IAHDCA

Houston George Bush Intcntl

Fri 10/3

6:15 am-4:59 pm

1 stop9h 44m

Washington, D.C. Reagan-National

Sun 10/5

7:00 am-11:09 am

1 stop29h 09m

$167

HoustonWashington, D.C.

IAH - DCA

IAHDCA

Houston George Bush Intcntl

Wed 10/1

7:30 am-9:59 pm

1 stop13h 29m

Washington, D.C. Reagan-National

Sun 10/5

1:00 pm-11:09 am

1 stop23h 09m

$167

HoustonWashington, D.C.

IAH - DCA

IAHDCA

Houston George Bush Intcntl

Thu 10/30

6:00 am-9:59 pm

1 stop14h 59m

Washington, D.C. Reagan-National

Sun 11/2

8:00 am-11:39 pm

1 stop16h 39m

$167

HoustonWashington, D.C.

IAH - DCA

IAHDCA

Houston George Bush Intcntl

Sun 11/2

5:00 am-8:59 pm

1 stop14h 59m

Washington, D.C. Reagan-National

Wed 11/5

1:00 pm-11:39 pm

1 stop11h 39m

$167

HoustonWashington, D.C.

IAH - DCA

IAHDCA

Houston George Bush Intcntl

Thu 10/23

6:07 pm-10:10 pm

Nonstop3h 03m

Washington, D.C. Reagan-National

Mon 10/27

7:59 pm-10:34 pm

Nonstop3h 35m

$181

HoustonWashington, D.C.

IAH - DCA

IAHDCA

Houston George Bush Intcntl

Fri 10/31

12:00 pm-3:58 pm

Nonstop2h 58m

Washington, D.C. Reagan-National

Mon 11/3

12:50 pm-3:25 pm

Nonstop3h 35m

$181

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 47 results

...

Best time to book a flight from George Bush Intcntl to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from George Bush Intcntl 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 George Bush Intcntl Airport to District of Columbia

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to District of Columbia (average of $292). Flying from Houston George Bush Intcntl Airport to District of Columbia 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 IAH to DC?

When flying from Houston George Bush Intcntl Airport to District of Columbia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Houston George Bush Intcntl Airport to District of Columbia

The most flights from IAH to USDC are scheduled on a Thursday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing District of Columbia

Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Houston George Bush Intcntl Airport to District of Columbia by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,960 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,937 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Spirit Airlines

6.3

Okay

8,023 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Frontier

5.8

Fair

3,177 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

How long is the flight from Houston George Bush Intcntl Airport to District of Columbia?
There are many flights that can get you from Houston George Bush Intcntl Airport to District of Columbia in 3h 03m. Fly via United Airlines or Frontier to get the fastest option. There are 1206 mi between Houston George Bush Intcntl Airport and District of Columbia. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the most reliable airlines from Houston George Bush Intcntl Airport to District of Columbia?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Houston George Bush Intcntl Airport to District of Columbia on time: Air China (77%), United Airlines (76%), Brussels Airlines (75%).
What are the cheapest flights from Houston George Bush Intcntl Airport to District of Columbia?
Looking for the cheapest flight from Houston George Bush Intcntl Airport to District of Columbia? While on average our users pay $977, our data indicates the cheapest price to be $118. The most popular route (Houston George Bush Intcntl - Washington, D.C. Dulles Intl), is priced around $143.
Can I find deals for flights from George Bush Intcntl to District of Columbia that include hotel bookings?
Yes. In addition to deals on George Bush Intcntl to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from George Bush Intcntl to District of Columbia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from George Bush Intcntl to District of Columbia.
Can I find deals for business class flights from George Bush Intcntl to District of Columbia?
Yes. Cheapflights offers flight deals from George Bush Intcntl to District of Columbia 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 George Bush Intcntl Airport to District of Columbia?
Currently, August is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to District of Columbia (average of $292). Flying from Houston George Bush Intcntl Airport to District of Columbia 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.

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Top 5 airlines flying from George Bush Intcntl to District of Columbia

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$94	Average$198	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$102	Average$279	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$144	Average$348	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$177	Average$313	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$191	Average$405	FlexibilityNo cancel fee	On-time69%

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$77+ Cheap flights from George Bush Intcntl (IAH) to District of Columbia

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from George Bush Intcntl to District of Columbia with Cheapflights

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Cheap flight deals from George Bush Intcntl to District of Columbia

Keep the following information in mind while searching for George Bush Intcntl to District of Columbia flight deals. Data was last updated September 11, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from George Bush Intcntl to District of Columbia

Cheapest flights from George Bush Intcntl to District of ColumbiaExplore the most affordable flight options available from George Bush Intcntl to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from George Bush Intcntl to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to District of Columbia that are best for you.

Best time to book a flight from George Bush Intcntl to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from George Bush Intcntl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Houston George Bush Intcntl Airport to District of Columbia

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to District of Columbia?

What is the cheapest time of day to fly from IAH to DC?

Find hourly flight availability from George Bush Intcntl to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Weekly flight availability from Houston George Bush Intcntl Airport to District of Columbia

Reviews of airlines servicing District of Columbia

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl to District of Columbia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Houston George Bush Intcntl Airport to District of Columbia?

What are the most reliable airlines from Houston George Bush Intcntl Airport to District of Columbia?

What are the cheapest flights from Houston George Bush Intcntl Airport to District of Columbia?

Can I find deals for flights from George Bush Intcntl to District of Columbia that include hotel bookings?

How can I find direct flights from George Bush Intcntl to District of Columbia?

Can I find deals for business class flights from George Bush Intcntl to District of Columbia?

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to District of Columbia?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for George Bush Intcntl to District of Columbia

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

Top 5 airlines flying from George Bush Intcntl to District of Columbia

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Cheapest flights from George Bush Intcntl to District of Columbia
Explore the most affordable flight options available from George Bush Intcntl to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.