$373+ Cheap flights from Dulles Intl (IAD) to Bismarck (BIS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BIS
Oct 1 — Oct 81
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Dulles Intl to Bismarck with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Dulles Intl to Bismarck
Cheapest
Best
Last-minute
Cheapest flights from Dulles Intl to BismarckExplore the most affordable flight options available from Dulles Intl to Bismarck. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 1, 2026.
Explore the most affordable flight options available from Dulles Intl to Bismarck. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 1, 2026.
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/262:22 pm -
1 stop6h 33m
Sat 10/35:40 pm -
1 stop4h 43m
Deal found 8/27![Delta logo]()
$373
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:56 pm -
1 stop6h 56m
Sat 10/31:13 pm -
2 stops8h 38m
Deal found 8/27![American Airlines logo]()
$378
This United Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:15 pm -
1 stop8h 23m
Tue 9/156:00 am -
1 stop6h 30m
Deal found 8/27![United Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:23 am -
1 stop8h 15m
Mon 10/195:39 pm -
1 stop4h 47m
Deal found 8/30![Delta logo]()
$406
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:01 am -
2 stops9h 36m
Tue 11/31:58 pm -
1 stop8h 32m
Deal found 8/27![American Airlines logo]()
$411
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:56 pm -
1 stop6h 56m
Tue 9/151:13 pm -
2 stops8h 38m
Deal found 8/27![American Airlines logo]()
$423
This American Airlines deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:01 am -
2 stops8h 22m
Mon 10/192:07 pm -
1 stop8h 16m
Deal found 8/30![American Airlines logo]()
$444
This American Airlines deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:52 am -
1 stop7h 35m
Tue 10/62:07 pm -
1 stop8h 16m
Deal found 8/31![American Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:05 pm -
1 stop7h 24m
Wed 11/49:00 am -
1 stop9h 30m
Deal found 8/31![United Airlines logo]()
$485
Best flights from Dulles Intl to BismarckDiscover carefully curated flight deals from Dulles Intl to Bismarck that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.
Discover carefully curated flight deals from Dulles Intl to Bismarck that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.
This United Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:15 pm -
1 stop8h 23m
Tue 9/156:00 am -
1 stop6h 30m
Deal found 8/27![United Airlines logo]()
$397
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:56 pm -
1 stop6h 56m
Tue 9/151:13 pm -
2 stops8h 38m
Deal found 8/27![American Airlines logo]()
$423
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:15 pm -
2 stops6h 56m
Sat 10/31:17 pm -
2 stops10h 24m
Deal found 8/27![Delta logo]()
$547
This United Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:05 pm -
1 stop7h 24m
Wed 11/49:00 am -
1 stop9h 30m
Deal found 8/27![United Airlines logo]()
$485
This Delta deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:59 pm -
1 stop5h 26m
Thu 10/225:00 am -
1 stop5h 21m
Deal found 8/28![Delta logo]()
$588
This Delta deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/910:57 am -
2 stops9h 58m
Tue 10/133:18 pm -
2 stops8h 24m
Deal found 8/30![Delta logo]()
$598
This United Airlines deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:10 pm -
1 stop8h 34m
Thu 11/129:00 am -
1 stop9h 30m
Deal found 8/30![United Airlines logo]()
$657
This KAYAK deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:10 am -
1 stop7h 27m
Wed 9/305:00 am -
1 stop4h 53m
Deal found 8/28![Delta logo]()
$604
Last-minute flights from Dulles Intl to BismarckDiscover last-minute flight deals from Dulles Intl to Bismarck. Data last updated September 1, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Bismarck. Data last updated September 1, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:15 pm -
1 stop8h 23m
Tue 9/156:00 am -
1 stop6h 30m
Deal found 8/27![United Airlines logo]()
$397
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:56 pm -
1 stop6h 56m
Tue 9/151:13 pm -
2 stops8h 38m
Deal found 8/27![American Airlines logo]()
$423
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:26 pm -
1 stop7h 12m
Fri 9/181:30 pm -
2 stops21h 11m
Deal found 8/29![United Airlines logo]()
$797
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1810:20 pm -
2 stops22h 58m
Mon 9/216:12 pm -
2 stops19h 28m
Deal found 8/29![United Airlines logo]()
$766
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/262:22 pm -
1 stop6h 33m
Sat 10/35:40 pm -
1 stop4h 43m
Deal found 8/27![Delta logo]()
$373
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:56 pm -
1 stop6h 56m
Sat 10/31:13 pm -
2 stops8h 38m
Deal found 8/27![American Airlines logo]()
$378
This KAYAK deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:10 am -
1 stop7h 27m
Wed 9/305:00 am -
1 stop4h 53m
Deal found 8/28![Delta logo]()
$604
Find flight deals from Dulles Intl to Bismarck
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Bismarck (BIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $373 (Delta) |
Popular in | August |
Cheapest in | November |
Average price | $518 |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to Bismarck that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 1, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Bismarck that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Bismarck
IAD Washington, D.C. Dulles Intl - BIS Bismarck
IADBIS
Washington, D.C. Dulles Intl
Fri 9/11
4:15 pm-11:38 pm
1 stop8h 23m
Bismarck
Tue 9/15
6:00 am-1:30 pm
1 stop6h 30m
$397
Washington, D.C.Bismarck
IAD Washington, D.C. Dulles Intl - BIS Bismarck
IADBIS
Washington, D.C. Dulles Intl
Fri 9/11
4:56 pm-10:52 pm
1 stop6h 56m
Bismarck
Tue 9/15
1:13 pm-10:51 pm
2 stops8h 38m
$423
Washington, D.C.Bismarck
IAD Washington, D.C. Dulles Intl - BIS Bismarck
IADBIS
Washington, D.C. Dulles Intl
Sat 10/31
2:05 pm-8:29 pm
1 stop7h 24m
Bismarck
Wed 11/4
9:00 am-7:30 pm
1 stop9h 30m
$485
Washington, D.C.Bismarck
IAD Washington, D.C. Dulles Intl - BIS Bismarck
IADBIS
Washington, D.C. Dulles Intl
Sat 9/26
5:15 pm-11:11 pm
2 stops6h 56m
Bismarck
Sat 10/3
1:17 pm-12:41 am
2 stops10h 24m
$547
Quickest round-trip
Washington, D.C.Bismarck
IAD Washington, D.C. Dulles Intl - BIS Bismarck
IADBIS
Washington, D.C. Dulles Intl
Fri 10/16
6:59 pm-11:25 pm
1 stop5h 26m
Bismarck
Thu 10/22
5:00 am-11:21 am
1 stop5h 21m
$588
Washington, D.C.Bismarck
IAD Washington, D.C. Dulles Intl - BIS Bismarck
IADBIS
Washington, D.C. Dulles Intl
Fri 10/9
10:57 am-7:55 pm
2 stops9h 58m
Bismarck
Tue 10/13
3:18 pm-12:42 am
2 stops8h 24m
$598
Washington, D.C.Bismarck
IAD Washington, D.C. Dulles Intl - BIS Bismarck
IADBIS
Washington, D.C. Dulles Intl
Tue 9/29
6:10 am-12:37 pm
1 stop7h 27m
Bismarck
Wed 9/30
5:00 am-10:53 am
1 stop4h 53m
$604
Washington, D.C.Bismarck
IAD Washington, D.C. Dulles Intl - BIS Bismarck
IADBIS
Washington, D.C. Dulles Intl
Wed 11/11
4:10 pm-11:44 pm
1 stop8h 34m
Bismarck
Thu 11/12
9:00 am-7:30 pm
1 stop9h 30m
$657
Sorted by cheapest first
Compare providers for flights from Dulles Intl to Bismarck
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 Dulles Intl to Bismarck in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Bismarck flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Bismarck flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Bismarck flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Bismarck flights, Cheapflights users trust FlightHub the most. FlightHub 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 Washington, D.C. Dulles Intl Airport-Bismarck 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 Dulles Intl to Bismarck
Have a flexible travel schedule? Discover the best time to fly to Bismarck from Dulles Intl with our price prediction graph.
IAD-BIS
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.
Reviews of airlines servicing Bismarck
Get insights into the airlines that provide service to Bismarck. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bismarck. Reviews last updated September 1, 2026.
See what other customers who have flown with Delta and United Airlines from Washington, D.C. Dulles Intl Airport to Bismarck have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Food
7.2
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Food
7.2
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Bismarck. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Bismarck flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Dulles Intl
Popular flights
Alternative routes for Dulles Intl to Bismarck
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Bismarck
Explore flights to Bismarck departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 1, 2026.
Complete your trip
Complete your trip to Bismarck by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Dulles Intl to Bismarck by cabin class
Find flights from Dulles Intl to Bismarck, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Dulles Intl and Bismarck flights
Browse other Dulles Intl and Bismarck flight options. Last updated on September 1, 2026.
Other flights from Dulles Intl
Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on September 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Dulles Intl to Bismarck
Discover the top 2 airlines that operate flights from Dulles Intl to Bismarck. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$268 | Average$983 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$348 | Average$445 | FlexibilityNo cancel fee | On-timeN/A |