How long is the flight from Bismarck to Washington, D.C.?

There are many flights that can get you from Bismarck to Washington, D.C. in 6h 19m. Fly via Delta or American Airlines to get the fastest option. Airlines will cover a distance of 1318 mi. This flight may include one or multiple stops.

What is the cheapest airline to fly from Bismarck to Washington, D.C. round-trip?

Our cheapest airline available from Bismarck to Washington, D.C. is Delta. Our recent data shows that you can find tickets from as low as $224 on this airline. Delta is currently priced 54% below the average price you’ll pay for this route.

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

For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $260. Users have also found prices from $295 and $295 on Delta and American Airlines, respectively.

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.

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).

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

The most popular route from Bismarck to Washington, D.C. is Bismarck - Baltimore/Washington. You may also consider Bismarck - Washington, D.C. Dulles Intl or Bismarck - Washington, D.C. Reagan-National.

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

When flying from Bismarck to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Bismarck-Washington, D.C. flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Bismarck-Washington, D.C. flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Bismarck-Washington, D.C. flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Bismarck-Washington, D.C. flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bismarck-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Bismarck to Washington, D.C.?

Bismarck (BIS) is the airport you will fly out of if you book a flight from Bismarck to Washington, D.C.. You should not have trouble finding flights to Washington, D.C. from Bismarck; the airport handles an average of 0 outbound flights to Washington, D.C. per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Bismarck airport to Washington, D.C.. It is only a 2.5 mi journey to Bismarck (BIS) from Bismarck’s city center.

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

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

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

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

Yes. Cheapflights offers flight deals from Bismarck 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.

$165+ Flights from Bismarck to Washington, D.C.

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

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$269 (Delta)
One-way from	$165 (Kiwi.com)
Popular in	November
Cheapest in	March
Average price	$963

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

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

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

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

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Highest demand for flights based on searches. 41% potential increase in price ($356 potential increase over avg. RT price).

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Cheapest flight prices on average. 9% potential price decrease ($46 potential savings vs. average RT price).

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Average for round-trip flights in October 2025

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

Cheapest flights from Bismarck to Washington, D.C.
Explore the most affordable flight options available from Bismarck to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

Thu 12/115:36 pmBIS - IAD

1 stop5h 26mDelta

Sun 12/146:03 amIAD - BIS

1 stop6h 04mDelta

Deal found 10/29

$294

Fri 11/71:14 pmBIS - DCA

1 stop7h 46mDelta

Tue 11/116:10 amDCA - BIS

1 stop7h 30mDelta

Deal found 10/29

$409

Thu 12/1112:51 pmBIS - BWI

1 stop10h 01mAmerican Airlines

Sun 12/145:00 amBWI - BIS

2 stops10h 22mAmerican Airlines

Deal found 10/30

$463

Fri 12/192:39 pmBIS - BWI

1 stop7h 23mAmerican Airlines

Fri 12/266:00 amBWI - BIS

1 stop9h 09mAmerican Airlines

Deal found 10/29

$469

Fri 12/192:39 pmBIS - BWI

1 stop7h 23mAmerican Airlines

Mon 12/2911:45 amBWI - BIS

1 stop25h 46mAmerican Airlines

Deal found 10/29

$516

Fri 11/141:56 pmBIS - BWI

1 stop8h 01mUnited Airlines

Tue 11/184:12 pmBWI - BIS

1 stop8h 27mUnited Airlines

Deal found 10/30

$517

Fri 11/71:14 pmBIS - IAD

2 stops9h 06mDelta

Tue 11/116:03 amIAD - BIS

1 stop7h 37mDelta

Deal found 10/29

$543

Thu 12/1111:36 amBIS - BWI

2 stops20h 41mMultiple Airlines

Sun 12/148:30 pmBWI - BIS

2 stops25h 55mMultiple Airlines

Deal found 10/29

$547

Fri 12/192:39 pmBIS - IAD

1 stop6h 54mAmerican Airlines

Mon 12/296:05 amIAD - BIS

1 stop9h 04mAmerican Airlines

Deal found 10/29

$589

Tue 12/231:01 pmBIS - DCA

1 stop9h 44mAmerican Airlines

Sat 1/36:00 amDCA - BIS

1 stop7h 31mAmerican Airlines

Deal found 10/29

$623

Thu 12/1112:51 pmBIS - IAD

2 stops23h 43mAmerican Airlines

Sun 12/149:15 amIAD - BIS

2 stops14h 03mAmerican Airlines

Deal found 10/29

$638

Fri 12/192:39 pmBIS - IAD

1 stop6h 54mAmerican Airlines

Fri 12/266:05 amIAD - BIS

1 stop9h 04mAmerican Airlines

Deal found 10/30

$681

Best flights from Bismarck to Washington, D.C.
Discover carefully curated flight deals from Bismarck to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2025.

Sat 2/2111:30 amBIS - BWI

1 stop6h 19mDelta

Tue 2/246:19 amBWI - BIS

1 stop5h 37mDelta

Deal found 10/28

$269

Tue 3/31:43 pmBIS - IAD

1 stop8h 36mUnited Airlines

Sat 3/75:20 pmIAD - BIS

1 stop7h 17mUnited Airlines

Deal found 10/28

$401

Thu 12/1112:51 pmBIS - BWI

1 stop10h 01mAmerican Airlines

Sun 12/145:00 amBWI - BIS

2 stops10h 22mAmerican Airlines

Deal found 10/30

$463

Thu 12/115:36 pmBIS - IAD

1 stop5h 26mDelta

Sun 12/146:03 amIAD - BIS

1 stop6h 04mDelta

Deal found 10/29

$294

Tue 3/37:31 amBIS - DCA

2 stops10h 46mDelta

Sat 3/73:10 pmDCA - BIS

1 stop5h 47mDelta

Deal found 10/28

$299

Tue 3/311:30 amBIS - IAD

2 stops10h 32mDelta

Sat 3/76:10 amIAD - BIS

2 stops11h 43mDelta

Deal found 10/28

$353

Fri 12/192:39 pmBIS - BWI

1 stop7h 23mAmerican Airlines

Fri 12/266:00 amBWI - BIS

1 stop9h 09mAmerican Airlines

Deal found 10/29

$469

Fri 11/141:56 pmBIS - BWI

1 stop8h 01mUnited Airlines

Tue 11/184:12 pmBWI - BIS

1 stop8h 27mUnited Airlines

Deal found 10/30

$517

Fri 12/192:39 pmBIS - BWI

1 stop7h 23mAmerican Airlines

Mon 12/2911:45 amBWI - BIS

1 stop25h 46mAmerican Airlines

Deal found 10/29

$516

Fri 12/192:39 pmBIS - IAD

1 stop6h 54mAmerican Airlines

Fri 12/266:05 amIAD - BIS

1 stop9h 04mAmerican Airlines

Deal found 10/29

$589

Tue 12/231:01 pmBIS - DCA

1 stop9h 44mAmerican Airlines

Sat 1/36:00 amDCA - BIS

1 stop7h 31mAmerican Airlines

Deal found 10/29

$623

Tue 12/235:37 pmBIS - DCA

1 stop5h 20mDelta

Sat 1/310:13 amDCA - BIS

2 stops10h 36mDelta

Deal found 10/29

$704

Sat 11/225:35 pmBIS - DCA

1 stop4h 35mDelta

Sun 11/308:25 amDCA - BIS

1 stop5h 15mDelta

Deal found 10/28

$924

Last-minute flights from Bismarck to Washington, D.C.
Discover last-minute flight deals from Bismarck to Washington, D.C.. Data last updated October 30, 2025 and is based on user searches.

Tue 11/45:00 amBIS - IAD

1 stop7h 36mDelta

Wed 11/56:18 amIAD - BIS

1 stop7h 16mDelta

Deal found 10/30

$775

Fri 11/71:14 pmBIS - DCA

1 stop7h 46mDelta

Tue 11/116:10 amDCA - BIS

1 stop7h 30mDelta

Deal found 10/29

$409

Fri 11/71:14 pmBIS - IAD

2 stops9h 06mDelta

Tue 11/116:03 amIAD - BIS

1 stop7h 37mDelta

Deal found 10/29

$543

Fri 11/72:28 pmBIS - BWI

1 stop7h 34mAmerican Airlines

Tue 11/117:29 amBWI - BIS

1 stop5h 56mAmerican Airlines

Deal found 10/29

$562

Fri 11/71:56 pmBIS - IAD

1 stop8h 19mUnited Airlines

Tue 11/113:59 pmIAD - BIS

1 stop8h 40mUnited Airlines

Deal found 10/29

$614

Fri 11/141:56 pmBIS - BWI

1 stop8h 01mUnited Airlines

Tue 11/184:12 pmBWI - BIS

1 stop8h 27mUnited Airlines

Deal found 10/30

$517

Sat 11/225:35 pmBIS - BWI

1 stop5h 14mDelta

Sun 11/306:00 amBWI - BIS

1 stop7h 40mDelta

Deal found 10/30

$903

Sat 11/225:35 pmBIS - IAD

1 stop5h 17mDelta

Sun 11/306:03 amIAD - BIS

1 stop7h 37mDelta

Deal found 10/28

$924

Sat 11/225:35 pmBIS - DCA

1 stop4h 35mDelta

Sun 11/306:59 pmDCA - BIS

1 stop5h 27mDelta

Deal found 10/30

$924

Sat 11/2212:55 pmBIS - DCA

2 stops10h 04mAmerican Airlines

Sun 11/307:45 pmDCA - BIS

1 stop17h 40mAmerican Airlines

Deal found 10/30

$1,073

Sat 11/2212:55 pmBIS - BWI

2 stops10h 35mAmerican Airlines

Sun 11/305:04 amBWI - BIS

2 stops8h 21mAmerican Airlines

Deal found 10/28

$1,353

One-way flights from Bismarck to Washington, D.C.
Search for one-way flight options from Bismarck to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 30, 2025.

Mon 12/810:15 pmBIS - DCA

3 stops41h 44mMultiple Airlines

Deal found 10/29

$165

Tue 12/161:50 pmBIS - IAD

2 stops20h 49mUnited Airlines

Deal found 10/29

$260

Mon 11/245:35 pmBIS - IAD

1 stop5h 17mDelta

Deal found 10/30

$295

Mon 12/82:29 pmBIS - DCA

1 stop7h 31mAmerican Airlines

Deal found 10/29

$295

Mon 11/245:00 amBIS - BWI

1 stop4h 43mDelta

Deal found 10/29

$295

Tue 12/167:25 amBIS - DCA

2 stops10h 15mDelta

Deal found 10/29

$300

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BismarckBaltimore

BIS - BWI

BISBWI

Bismarck

Sat 2/21

11:30 am-6:49 pm

1 stop6h 19m

Baltimore/Washington

Tue 2/24

6:19 am-10:56 am

1 stop5h 37m

$269

BismarckWashington, D.C.

BIS - IAD

BISIAD

Bismarck

Thu 12/11

5:36 pm-12:02 am

1 stop5h 26m

Washington, D.C. Dulles Intl

Sun 12/14

6:03 am-11:07 am

1 stop6h 04m

$294

BismarckWashington, D.C.

BIS - DCA

BISDCA

Bismarck

Tue 3/3

7:31 am-7:17 pm

2 stops10h 46m

Washington, D.C. Reagan-National

Sat 3/7

3:10 pm-7:57 pm

1 stop5h 47m

$299

BismarckWashington, D.C.

BIS - IAD

BISIAD

Bismarck

Tue 3/3

11:30 am-11:02 pm

2 stops10h 32m

Washington, D.C. Dulles Intl

Sat 3/7

6:10 am-4:53 pm

2 stops11h 43m

$353

BismarckWashington, D.C.

BIS - IAD

BISIAD

Bismarck

Tue 3/3

1:43 pm-11:19 pm

1 stop8h 36m

Washington, D.C. Dulles Intl

Sat 3/7

5:20 pm-11:37 pm

1 stop7h 17m

$401

BismarckBaltimore

BIS - BWI

BISBWI

Bismarck

Thu 12/11

12:51 pm-11:52 pm

1 stop10h 01m

Baltimore/Washington

Sun 12/14

5:00 am-2:22 pm

2 stops10h 22m

$463

BismarckBaltimore

BIS - BWI

BISBWI

Bismarck

Fri 12/19

2:39 pm-11:02 pm

1 stop7h 23m

Baltimore/Washington

Fri 12/26

6:00 am-2:09 pm

1 stop9h 09m

$469

BismarckBaltimore

BIS - BWI

BISBWI

Bismarck

Fri 12/19

2:39 pm-11:02 pm

1 stop7h 23m

Baltimore/Washington

Mon 12/29

11:45 am-12:31 pm

1 stop25h 46m

$516

BismarckBaltimore

BIS - BWI

BISBWI

Bismarck

Fri 11/14

1:56 pm-10:57 pm

1 stop8h 01m

Baltimore/Washington

Tue 11/18

4:12 pm-11:39 pm

1 stop8h 27m

$517

BismarckWashington, D.C.

BIS - IAD

BISIAD

Bismarck

Fri 12/19

2:39 pm-10:33 pm

1 stop6h 54m

Washington, D.C. Dulles Intl

Fri 12/26

6:05 am-2:09 pm

1 stop9h 04m

$589

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 23 results

Compare providers for flights from Bismarck to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Bismarck to Washington, D.C. in October.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Bismarck-Washington, D.C. flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Bismarck-Washington, D.C. flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Bismarck-Washington, D.C. flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Bismarck-Washington, D.C. flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bismarck-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

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

Currently, October is the cheapest month in which you can book a flight from Bismarck to Washington, D.C. (average of $224). Flying from Bismarck to Washington, D.C. in July is currently the most expensive (average of $487). 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.

Reviews of airlines servicing Washington, D.C.

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

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Delta

7.9

Good

7,998 reviews

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

Related info for your journey

What airport do you fly from for flights from Bismarck to Washington, D.C.?
Bismarck (BIS) is the airport you will fly out of if you book a flight from Bismarck to Washington, D.C.. You should not have trouble finding flights to Washington, D.C. from Bismarck; the airport handles an average of 0 outbound flights to Washington, D.C. per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Bismarck airport to Washington, D.C.. It is only a 2.5 mi journey to Bismarck (BIS) from Bismarck’s city center.
How long is the flight from Bismarck to Washington, D.C.?
There are many flights that can get you from Bismarck to Washington, D.C. in 6h 19m. Fly via Delta or American Airlines to get the fastest option. Airlines will cover a distance of 1318 mi. This flight may include one or multiple stops.
What is the cheapest airline to fly from Bismarck to Washington, D.C. round-trip?
Our cheapest airline available from Bismarck to Washington, D.C. is Delta. Our recent data shows that you can find tickets from as low as $224 on this airline. Delta is currently priced 54% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Bismarck to Washington, D.C. one-way?
For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $260. Users have also found prices from $295 and $295 on Delta and American Airlines, respectively.
What are the most popular routes from Bismarck to Washington, D.C.?
The most popular route from Bismarck to Washington, D.C. is Bismarck - Baltimore/Washington. You may also consider Bismarck - Washington, D.C. Dulles Intl or Bismarck - Washington, D.C. Reagan-National.
Can I find deals for flights from Bismarck to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Bismarck to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Bismarck 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 Bismarck to Washington, D.C..
Can I find deals for business class flights from Bismarck to Washington, D.C.?
Yes. Cheapflights offers flight deals from Bismarck 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 Bismarck to Washington, D.C.?
Currently, October is the cheapest month in which you can book a flight from Bismarck to Washington, D.C. (average of $224). Flying from Bismarck to Washington, D.C. in July is currently the most expensive (average of $487). 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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Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Bismarck to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$224	Average$397	FlexibilityNo cancel fee	On-timeN/A

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$165+ Cheap flights from Bismarck (BIS) 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.

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

1. Tell us where you want to go

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

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Round-trip from

One-way from

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Cheapest in

Average price

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

Cheapest flights from Bismarck to Washington, D.C.Explore the most affordable flight options available from Bismarck to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

Explore the most affordable flight options available from Bismarck to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Bismarck to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Bismarck to Washington, D.C. in October.

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

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

Cheapflights Insights

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

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

Reviews of airlines servicing Washington, D.C.

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

Related info for your journey

Find useful and relevant information for your journey from Bismarck 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 airport do you fly from for flights from Bismarck to Washington, D.C.?

How long is the flight from Bismarck to Washington, D.C.?

What is the cheapest airline to fly from Bismarck to Washington, D.C. round-trip?

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

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

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

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

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

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

Traveling to a place near Washington, D.C.?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Bismarck to Washington, D.C.

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Top airline flying from Bismarck to Washington, D.C.

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Cheapest flights from Bismarck to Washington, D.C.
Explore the most affordable flight options available from Bismarck to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.