What are the cheapest airlines to fly from Iowa to Washington, D.C. one-way?

The cheapest airlines for a one-way flight from Iowa to Washington, D.C. are Allegiant Air ($96), Frontier ($106), and United Airlines ($126).

What are the most popular routes from Iowa to Washington, D.C.?

While some choose either Des Moines - Washington, D.C. Dulles Intl or Omaha Eppley Airfield - Washington, D.C. Dulles Intl, Des Moines - Washington, D.C. Reagan-National is the most popular route from Iowa to Washington, D.C..

What are the most popular airlines that fly from Iowa to Washington, D.C.?

American Airlines, Delta and United Airlines are the most popular airlines when flying from Iowa to Washington, D.C..

How far in advance should I book a flight from Iowa to Washington, D.C.?

Travelers have found it’s best to book a flight 57 days in advance to save up to 19% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 57 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Iowa to Washington, D.C. 1-2 weeks in advance for as low as $249, or $424 for flights within the next 24 hours.

What is the cheapest month to fly from Iowa to Washington, D.C.?

May can be a great time to fly to Washington, D.C. from Iowa with a flight ticket averaging about $397. Cheapflights users have found deals in the month of May for as cheap as $269. The most expensive prices can be found in the month of June.

Can I find deals for flights from Iowa to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Iowa to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Iowa to Washington, D.C.?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Iowa to Washington, D.C..

Can I find deals for business class flights from Iowa to Washington, D.C.?

Yes. Cheapflights offers flight deals from Iowa to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$96+ Flights from Iowa to Washington, D.C.

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

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Cheap flight deals from Iowa to Washington, D.C.

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$224 (American Airlines)
One-way from	$96 (Mytrip)
Popular in	June
Cheapest in	May
Average price	$453
Good round-trip deal	$341 or less
Good one-way deal	$217 or less

Provider with most accurate pricing for Des Moines-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Des Moines-Washington, D.C. (WAS) flights.

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From Iowa to Washington, D.C. (WAS)

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One-way flight from Iowa to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 4% potential increase in price ($20 potential increase over avg. RT price).

Search Deals

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

Search Deals

Average for round-trip flights in April 2025

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Price to beat on a round-trip flight from Iowa to Washington, D.C. (WAS).

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Price to beat on a one-way flight from Iowa to Washington, D.C. (WAS).

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Find flight deals from Iowa to Washington, D.C.

Cheapest flights from Iowa to Washington, D.C.
Explore the most affordable flight options available from Iowa to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Thu 5/294:25 pmMLI - BWI

1 stop6h 28mAmerican Airlines

Wed 6/410:53 amBWI - MLI

1 stop6h 02mAmerican Airlines

Deal found 4/22

$224

Fri 5/168:16 pmCID - DCA

1 stop24h 43mFrontier

Sun 5/187:00 amDCA - CID

1 stop12h 58mFrontier

Deal found 4/21

$236

Fri 6/135:28 pmMLI - BWI

1 stop6h 01mDelta

Mon 6/164:45 pmBWI - MLI

1 stop7h 02mDelta

Deal found 4/22

$249

Wed 8/205:35 amOMA - BWI

1 stop6h 31mDelta

Sat 8/304:39 pmBWI - OMA

1 stop8h 14mDelta

Deal found 4/22

$267

Thu 5/11:27 pmDSM - BWI

2 stops26h 48mMultiple Airlines

Sun 5/45:55 amBWI - DSM

2 stops13h 59mMultiple Airlines

Deal found 4/22

$270

Tue 7/15:35 pmDSM - BWI

1 stop5h 10mSouthwest

Sat 7/56:35 amBWI - DSM

1 stop6h 35mSouthwest

Deal found 4/22

$271

Tue 5/2012:43 pmOMA - BWI

2 stops8h 32mAmerican Airlines

Tue 5/275:27 pmBWI - OMA

1 stop6h 12mAmerican Airlines

Deal found 4/22

$272

Tue 5/277:29 pmOMA - BWI

1 stop19h 59mFrontier

Sat 8/165:20 pmBWI - OMA

1 stop26h 33mFrontier

Deal found 4/22

$282

Tue 5/1311:26 amDSM - BWI

1 stop4h 47mDelta

Sat 5/177:00 amBWI - DSM

1 stop4h 41mDelta

Deal found 4/21

$284

Wed 5/281:28 pmOMA - BWI

3 stops22h 51mMultiple Airlines

Fri 5/306:35 pmBWI - OMA

1 stop16h 28mMultiple Airlines

Deal found 4/22

$286

Wed 5/141:40 pmDSM - BWI

1 stop8h 37mUnited Airlines

Tue 5/204:19 pmBWI - DSM

1 stop7h 26mUnited Airlines

Deal found 4/22

$297

Wed 5/2111:20 amOMA - DCA

Nonstop2h 35mSouthwest

Wed 5/284:25 pmDCA - OMA

Nonstop2h 50mSouthwest

Deal found 4/21

$301

Best flights from Iowa to Washington, D.C.
Discover carefully curated flight deals from Iowa to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2025.

Thu 5/294:25 pmMLI - BWI

1 stop6h 28mAmerican Airlines

Wed 6/410:53 amBWI - MLI

1 stop6h 02mAmerican Airlines

Deal found 4/22

$224

Fri 5/168:16 pmCID - DCA

1 stop24h 43mFrontier

Sun 5/187:00 amDCA - CID

1 stop12h 58mFrontier

Deal found 4/21

$236

Fri 6/135:28 pmMLI - BWI

1 stop6h 01mDelta

Mon 6/164:45 pmBWI - MLI

1 stop7h 02mDelta

Deal found 4/22

$249

Thu 5/11:27 pmDSM - BWI

2 stops26h 48mMultiple Airlines

Sun 5/45:55 amBWI - DSM

2 stops13h 59mMultiple Airlines

Deal found 4/22

$270

Tue 7/15:35 pmDSM - BWI

1 stop5h 10mSouthwest

Sat 7/56:35 amBWI - DSM

1 stop6h 35mSouthwest

Deal found 4/22

$271

Wed 5/141:40 pmDSM - BWI

1 stop8h 37mUnited Airlines

Tue 5/204:19 pmBWI - DSM

1 stop7h 26mUnited Airlines

Deal found 4/22

$297

Fri 6/63:38 pmOMA - IAD

1 stop28h 15mAllegiant Air

Mon 6/93:13 pmIAD - OMA

2 stops18h 52mAllegiant Air

Deal found 4/21

$310

Sat 6/2112:42 pmCID - DCA

Nonstop2h 17mAmerican Airlines

Tue 7/110:41 amDCA - CID

Nonstop2h 28mAmerican Airlines

Deal found 4/21

$249

Wed 8/205:35 amOMA - BWI

1 stop6h 31mDelta

Sat 8/304:39 pmBWI - OMA

1 stop8h 14mDelta

Deal found 4/22

$267

Tue 5/277:29 pmOMA - BWI

1 stop19h 59mFrontier

Sat 8/165:20 pmBWI - OMA

1 stop26h 33mFrontier

Deal found 4/22

$282

Wed 5/281:28 pmOMA - BWI

3 stops22h 51mMultiple Airlines

Fri 5/306:35 pmBWI - OMA

1 stop16h 28mMultiple Airlines

Deal found 4/22

$286

Tue 5/2012:43 pmOMA - BWI

2 stops8h 32mAmerican Airlines

Tue 5/275:27 pmBWI - OMA

1 stop6h 12mAmerican Airlines

Deal found 4/22

$272

Last-minute flights from Iowa to Washington, D.C.
Discover last-minute flight deals from Iowa to Washington, D.C.. Data last updated April 22, 2025 and is based on user searches.

Sun 4/278:14 pmCID - DCA

1 stop14h 55mFrontier

Mon 4/286:00 pmDCA - CID

1 stop26h 14mFrontier

Deal found 4/22

$311

Sun 4/279:02 pmOMA - DCA

1 stop23h 57mFrontier

Thu 5/11:00 pmDCA - OMA

1 stop8h 02mFrontier

Deal found 4/22

$411

Tue 4/296:45 amDSM - DCA

Nonstop2h 28mAmerican Airlines

Tue 5/610:23 amDCA - DSM

Nonstop2h 55mAmerican Airlines

Deal found 4/22

$443

Tue 4/2911:30 amDSM - IAD

1 stop7h 14mDelta

Tue 5/66:00 amIAD - DSM

1 stop5h 41mDelta

Deal found 4/22

$463

Tue 4/2912:10 pmCID - DCA

1 stop4h 49mDelta

Sat 5/36:28 pmDCA - CID

1 stop4h 51mDelta

Deal found 4/21

$483

Tue 4/294:18 pmCID - IAD

1 stop6h 22mDelta

Sat 5/36:00 amIAD - CID

1 stop6h 25mDelta

Deal found 4/22

$483

Wed 4/303:28 pmOMA - BWI

1 stop5h 14mUnited Airlines

Tue 5/276:40 amBWI - OMA

1 stop4h 46mUnited Airlines

Deal found 4/22

$437

Wed 4/3012:51 pmOMA - BWI

2 stops10h 33mAmerican Airlines

Tue 5/275:27 pmBWI - OMA

1 stop6h 12mAmerican Airlines

Deal found 4/22

$442

Thu 5/11:27 pmDSM - BWI

2 stops26h 48mMultiple Airlines

Sun 5/45:55 amBWI - DSM

2 stops13h 59mMultiple Airlines

Deal found 4/22

$270

Thu 5/15:05 pmMLI - BWI

1 stop6h 36mDelta

Sat 5/35:37 pmBWI - MLI

1 stop5h 48mDelta

Deal found 4/21

$309

Thu 5/13:24 pmMLI - BWI

2 stops8h 00mAmerican Airlines

Sat 5/36:14 pmBWI - MLI

1 stop4h 59mAmerican Airlines

Deal found 4/21

$400

Fri 5/27:20 pmDSM - DCA

1 stop15h 47mFrontier

Mon 5/51:00 pmDCA - DSM

1 stop6h 30mFrontier

Deal found 4/22

$357

One-way flights from Iowa to Washington, D.C.
Search for one-way flight options from Iowa to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated April 22, 2025.

Sat 6/214:17 pmOMA - IAD

1 stop15h 14mAllegiant Air

Deal found 4/21

$96

Mon 4/287:27 pmDSM - DCA

1 stop15h 42mFrontier

Deal found 4/21

$106

Fri 6/132:02 pmCID - IAD

1 stop23h 30mAllegiant Air

Deal found 4/21

$111

Sat 6/143:47 pmMLI - BWI

1 stop4h 55mUnited Airlines

Deal found 4/22

$126

Thu 5/18:11 pmCID - DCA

1 stop24h 48mFrontier

Deal found 4/21

$127

Tue 5/202:39 pmOMA - BWI

1 stop6h 36mAmerican Airlines

Deal found 4/22

$134

Sat 5/2412:00 pmDSM - DCA

1 stop5h 59mDelta

Deal found 4/21

$136

Wed 5/215:50 pmDSM - BWI

1 stop4h 30mDelta

Deal found 4/21

$136

Tue 5/277:29 pmOMA - BWI

1 stop19h 59mFrontier

Deal found 4/22

$137

Thu 5/2911:20 amOMA - IAD

1 stop24h 12mFrontier

Deal found 4/22

$137

Fri 5/238:20 pmDSM - BWI

1 stop19h 33mFrontier

Deal found 4/21

$141

Tue 7/111:30 amOMA - DCA

Nonstop2h 30mSouthwest

Deal found 4/21

$142

Cheapflights Fare Finder

Use the filters below to find and compare flights from Iowa to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MolineBaltimore

MLI - BWI

MLIBWI

Moline Quad-City

Thu 5/29

4:25 pm-11:53 pm

1 stop6h 28m

Baltimore/Washington

Wed 6/4

10:53 am-3:55 pm

1 stop6h 02m

$224

Cedar RapidsWashington, D.C.

CID - DCA

CIDDCA

Cedar Rapids

Fri 5/16

8:16 pm-9:59 pm

1 stop24h 43m

Washington, D.C. Reagan-National

Sun 5/18

7:00 am-6:58 pm

1 stop12h 58m

$236

MolineBaltimore

MLI - BWI

MLIBWI

Moline Quad-City

Fri 6/13

5:28 pm-12:29 am

1 stop6h 01m

Baltimore/Washington

Mon 6/16

4:45 pm-10:47 pm

1 stop7h 02m

$249

Cedar RapidsWashington, D.C.

CID - DCA

CIDDCA

Cedar Rapids

Sat 6/21

12:42 pm-3:59 pm

Nonstop2h 17m

Washington, D.C. Reagan-National

Tue 7/1

10:41 am-12:09 pm

Nonstop2h 28m

$249

OmahaBaltimore

OMA - BWI

OMABWI

Omaha Eppley Airfield

Wed 8/20

5:35 am-1:06 pm

1 stop6h 31m

Baltimore/Washington

Sat 8/30

4:39 pm-11:53 pm

1 stop8h 14m

$267

Des MoinesBaltimore

DSM - BWI

DSMBWI

Des Moines

Thu 5/1

1:27 pm-5:15 pm

2 stops26h 48m

Baltimore/Washington

Sun 5/4

5:55 am-6:54 pm

2 stops13h 59m

$270

Des MoinesBaltimore

DSM - BWI

DSMBWI

Des Moines

Tue 7/1

5:35 pm-11:45 pm

1 stop5h 10m

Baltimore/Washington

Sat 7/5

6:35 am-12:10 pm

1 stop6h 35m

$271

OmahaBaltimore

OMA - BWI

OMABWI

Omaha Eppley Airfield

Tue 5/20

12:43 pm-10:15 pm

2 stops8h 32m

Baltimore/Washington

Tue 5/27

5:27 pm-10:39 pm

1 stop6h 12m

$272

OmahaBaltimore

OMA - BWI

OMABWI

Omaha Eppley Airfield

Tue 5/27

7:29 pm-4:28 pm

1 stop19h 59m

Baltimore/Washington

Sat 8/16

5:20 pm-6:53 pm

1 stop26h 33m

$282

Des MoinesBaltimore

DSM - BWI

DSMBWI

Des Moines

Tue 5/13

11:26 am-5:13 pm

1 stop4h 47m

Baltimore/Washington

Sat 5/17

7:00 am-10:41 am

1 stop4h 41m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 60 results

...

Best time to book a flight from Iowa to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Iowa 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 Iowa to Washington, D.C.

What is the cheapest month to book a flight from Iowa to Washington, D.C.?

Currently, August is the cheapest month in which you can book a flight from Iowa to Washington, D.C. (average of $309). Flying from Iowa to Washington, D.C. in June is currently the most expensive (average of $383). 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 IA to WAS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Iowa to Washington, D.C. as you normally would.

Weekly flight availability from Iowa to Washington, D.C.

The most flights from USIA to WAS are scheduled on a Monday (3 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Washington, D.C. by month

In terms of precipitation, rainfall in Washington, D.C. 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. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

If weather is an important factor for your trip to Washington, D.C., 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 Washington, D.C.

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Iowa to Washington, D.C. to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,906 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,906 reviews

Alaska Airlines

8.0

Very good

9,906 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Southwest

8.0

Very good

4,286 reviews

Alaska Airlines

8.0

Very good

9,906 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,920 reviews

Alaska Airlines

8.0

Very good

9,906 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,683 reviews

Alaska Airlines

8.0

Very good

9,906 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Allegiant Air

7.3

Good

734 reviews

Alaska Airlines

8.0

Very good

9,906 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

What are the cheapest airlines to fly from Iowa to Washington, D.C. one-way?
The cheapest airlines for a one-way flight from Iowa to Washington, D.C. are Allegiant Air ($96), Frontier ($106), and United Airlines ($126).
What are the most popular routes from Iowa to Washington, D.C.?
While some choose either Des Moines - Washington, D.C. Dulles Intl or Omaha Eppley Airfield - Washington, D.C. Dulles Intl, Des Moines - Washington, D.C. Reagan-National is the most popular route from Iowa to Washington, D.C..
Can I find deals for flights from Iowa to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Iowa to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Iowa to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Iowa to Washington, D.C..
Can I find deals for business class flights from Iowa to Washington, D.C.?
Yes. Cheapflights offers flight deals from Iowa to Washington, D.C. 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 Iowa to Washington, D.C.?
Currently, August is the cheapest month in which you can book a flight from Iowa to Washington, D.C. (average of $309). Flying from Iowa to Washington, D.C. in June is currently the most expensive (average of $383). 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

Arlington

Alexandria

Woodbridge

Fairfax

Tysons

Springfield

Rockville

Fredericksburg

Gaithersburg

Silver Spring

Linthicum Heights

Falls Church

Laurel

Easton

Herndon

Bowie

Towson

National Harbor

Oxon Hill

Reston

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Iowa to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$109	Average$195	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$198	Average$418	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$216	Average$401	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$228	Average$456	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$331	Average$376	FlexibilityNo cancel fee	On-time63%

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$96+ Cheap flights from Iowa to Washington, D.C. (WAS)

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 6/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Iowa to Washington, D.C. with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Iowa to Washington, D.C.

Keep the following information in mind while searching for Iowa to Washington, D.C. flight deals. Data was last updated April 22, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Iowa to Washington, D.C.

Cheapest flights from Iowa to Washington, D.C.Explore the most affordable flight options available from Iowa to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Explore the most affordable flight options available from Iowa to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Iowa to Washington, D.C. that are best for you.

Best time to book a flight from Iowa to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Iowa with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Iowa to Washington, D.C.

What is the cheapest month to book a flight from Iowa to Washington, D.C.?

What is the cheapest time of day to fly from IA to WAS?

Find hourly flight availability from Iowa to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 22, 2025.

Weekly flight availability from Iowa to Washington, D.C.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Iowa to Washington, D.C. to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Iowa to Washington, D.C.. 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 to fly from Iowa to Washington, D.C. one-way?

What are the most popular routes from Iowa to Washington, D.C.?

Can I find deals for flights from Iowa to Washington, D.C. that include hotel bookings?

How can I find direct flights from Iowa to Washington, D.C.?

Can I find deals for business class flights from Iowa to Washington, D.C.?

What is the cheapest month to book a flight from Iowa to Washington, D.C.?

Traveling to a place near Iowa?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Iowa to Washington, D.C.

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

Top 5 airlines flying from Iowa to Washington, D.C.

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Cheapest flights from Iowa to Washington, D.C.
Explore the most affordable flight options available from Iowa to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.