$227 Cheap Flights from Bismarck (BIS) to Washington (IAD)

View $227 flight on Wed, Oct 29, 2025Opens in a new window

Popular airlines from Bismarck, ND (BIS-Bismarck Municipal) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Bismarck to Washington (BIS-IAD)

Prices were available within the past 7 days and start at $227 for one-way flights and $269 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Nov 15 - Tue, Nov 18
BIS
Bismarck
IAD
Washington
$269 Roundtrip, found 19 hours ago
$269
Roundtrip
found 19 hours ago
Select American Airlines flight, departing Sat, Nov 15 from Bismarck to Washington, returning Tue, Nov 18, priced at $269 found 19 hours ago
Delta
Thu, Feb 5 - Wed, Feb 11
BIS
Bismarck
IAD
Washington
$274 Roundtrip, found 1 day ago
$274
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Feb 5 from Bismarck to Washington, returning Wed, Feb 11, priced at $274 found 1 day ago
Delta
Sat, Nov 22 - Thu, Nov 27
BIS
Bismarck
IAD
Washington
$279 Roundtrip, found 5 days ago
$279
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 22 from Bismarck to Washington, returning Thu, Nov 27, priced at $279 found 5 days ago
Delta
Sat, Nov 15 - Tue, Nov 18
BIS
Bismarck
IAD
Washington
$304 Roundtrip, found 19 hours ago
$304
Roundtrip
found 19 hours ago
Select Delta flight, departing Sat, Nov 15 from Bismarck to Washington, returning Tue, Nov 18, priced at $304 found 19 hours ago
Delta
Sat, Nov 15 - Tue, Nov 18
BIS
Bismarck
IAD
Washington
$309 Roundtrip, found 19 hours ago
$309
Roundtrip
found 19 hours ago
Select Delta flight, departing Sat, Nov 15 from Bismarck to Washington, returning Tue, Nov 18, priced at $309 found 19 hours ago
United
Wed, Nov 12 - Sat, Nov 15
BIS
Bismarck
IAD
Washington
$310 Roundtrip, found 19 hours ago
$310
Roundtrip
found 19 hours ago
Select United flight, departing Wed, Nov 12 from Bismarck to Washington, returning Sat, Nov 15, priced at $310 found 19 hours ago
Delta
Sat, Nov 15 - Tue, Nov 18
BIS
Bismarck
IAD
Washington
$314 Roundtrip, found 19 hours ago
$314
Roundtrip
found 19 hours ago
Select Delta flight, departing Sat, Nov 15 from Bismarck to Washington, returning Tue, Nov 18, priced at $314 found 19 hours ago
Delta
Sat, Nov 15 - Tue, Nov 18
BIS
Bismarck
IAD
Washington
$321 Roundtrip, found 19 hours ago
$321
Roundtrip
found 19 hours ago
Select Delta flight, departing Sat, Nov 15 from Bismarck to Washington, returning Tue, Nov 18, priced at $321 found 19 hours ago
Delta
Mon, Oct 6 - Wed, Oct 22
BIS
Bismarck
IAD
Washington
$324 Roundtrip, found 1 day ago
$324
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Oct 6 from Bismarck to Washington, returning Wed, Oct 22, priced at $324 found 1 day ago
Delta
Sat, Nov 15 - Tue, Nov 18
BIS
Bismarck
IAD
Washington
$326 Roundtrip, found 19 hours ago
$326
Roundtrip
found 19 hours ago
Select Delta flight, departing Sat, Nov 15 from Bismarck to Washington, returning Tue, Nov 18, priced at $326 found 19 hours ago

Find the cheapest month to fly from Bismarck (BIS) to Washington (IAD)

January is typically the cheapest month to fly

From $232 - $648 per traveler.

Frequently asked questions

How much does a flight from Bismarck Municipal Airport (BIS) to Washington Dulles Intl. Airport (IAD) cost?
Get a cheap one-way flight from $227 or cheap return flight from $269 from Bismarck Municipal Airport (BIS) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Bismarck Municipal Airport (BIS) to Washington Dulles Intl. Airport (IAD)?
November is the most affordable month to fly from BIS to IAD. Avoiding peak travel times is often the key to landing a great deal.
What is the cheapest airline that flies from Bismarck Municipal Airport (BIS) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline that'll fly you from BIS to IAD, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Bismarck Municipal Airport (BIS) to Washington Dulles Intl. Airport (IAD)?
You'll have to take a flight with a layover if you're traveling from Bismarck Municipal Airport (BIS) to Washington Dulles Intl. Airport (IAD). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from BIS to IAD?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Bismarck Municipal Airport (BIS) to Washington Dulles Intl. Airport (IAD)?
To avoid possible delays on the Bismarck Municipal Airport (BIS) to Washington Dulles Intl. Airport (IAD) route, aim to travel before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Bismarck Municipal Airport (BIS) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your ticket from BIS to IAD shortly before your journey is generally more expensive. But if you're flexible with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a BIS to IAD flight and hotel package?
Securing a BIS to IAD flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our impressive range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Bismarck Municipal Airport (BIS) to Washington Dulles Intl. Airport (IAD)?
Usually, it's possible to reschedule or cancel your BIS to IAD flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Travel information

Origin airport
Bismarck Municipal
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$268
Distance
1291 mi

Book with confidence

Book with confidence

Bismarck to Washington Flights

The cheapest times to fly from Bismarck to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Bismarck to Washington are during the month of November. You can find some of the cheapest flights from Bismarck to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Bismarck to Washington

Sunday is one of the best days to book for cheap flights from Bismarck to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Bismarck to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Bismarck to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $227 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Bismarck to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Bismarck to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Bismarck to Washington Flights

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Explore a world of travel with Expedia

*Available to One Key members.