HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$206+ Cheap flights from Bismarck (BIS) to Illinois

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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — ORD
Apr 29 — May 61
Tue 4/29
Tue 5/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Bismarck to Illinois 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 Bismarck to Illinois

Keep the following information in mind while searching for Bismarck to Illinois flight deals. Data was last updated April 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$219
(Delta)

One-way from

$206
(American Airlines)

Popular in

November

Cheapest in

February

Average price

$263

Good round-trip deal

$312 or less

Good one-way deal

$134 or less
Provider with most accurate pricing for Bismarck-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bismarck-Chicago (CHI) flights.
Search Deals
From Bismarck to Illinois
Search Deals
One-way flight from Bismarck to Illinois
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from Bismarck to Illinois.
Search Deals
Price to beat on a one-way flight from Bismarck to Illinois.
Search Deals

Find flight deals from Bismarck to Illinois

Cheapest flights from Bismarck to Illinois
Explore the most affordable flight options available from Bismarck to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

This Delta deal was found by Cheapflights users on 4/23. 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.
Tue 6/35:00 amBIS - ORD
1 stop6h 47mDelta
Sat 6/213:58 pmORD - BIS
1 stop4h 09mDelta
Deal found 4/23$219
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Tue 6/39:00 amBIS - STL
1 stop7h 31mUnited Airlines
Tue 6/245:20 amSTL - BIS
1 stop5h 14mUnited Airlines
Deal found 4/23$249
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Wed 9/2412:39 pmBIS - ORD
Nonstop2h 14mAmerican Airlines
Thu 10/99:45 amORD - BIS
Nonstop2h 24mAmerican Airlines
Deal found 4/23$254
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Tue 6/106:18 amBIS - STL
1 stop5h 40mAmerican Airlines
Tue 6/178:05 pmSTL - BIS
1 stop16h 54mAmerican Airlines
Deal found 4/23$264
This Delta deal was found by Cheapflights users on 4/23. 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 6/611:05 amBIS - STL
1 stop6h 04mDelta
Wed 6/256:30 amSTL - BIS
1 stop4h 03mDelta
Deal found 4/23$269
This Delta deal was found by Cheapflights users on 4/23. 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.
Wed 7/167:31 amBIS - MDW
1 stop5h 31mDelta
Sat 7/199:30 amMDW - BIS
2 stops7h 16mDelta
Deal found 4/23$300
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/315:09 pmBIS - ORD
1 stop7h 16mUnited Airlines
Wed 6/255:02 amORD - BIS
1 stop5h 32mUnited Airlines
Deal found 4/23$319

Cheapflights Fare Finder

Customize your flight search to find flights from Bismarck to Illinois 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 2,558,603 searches. Data last updated April 24, 2025.
Use the filters below to find and compare flights from Bismarck to Illinois that are best for you.

Fly from

Bismarck

Fly to

Illinois

Route

Depart

Return

Price

BismarckChicago

BIS - ORD

BISORD

Bismarck

Tue 6/3

5:32 pm-9:30 pm

1 stop3h 58m

Chicago O'Hare Intl

Tue 6/24

6:00 am-10:33 am

1 stop4h 33m

$219

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

Tue 6/3

9:00 am-4:31 pm

1 stop7h 31m

Lambert-St Louis

Tue 6/24

5:20 am-10:34 am

1 stop5h 14m

$249

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

Tue 6/10

6:18 am-11:58 am

1 stop5h 40m

Lambert-St Louis

Tue 6/17

8:05 pm-12:59 pm

1 stop16h 54m

$264

BismarckChicago

BIS - ORD

BISORD

Bismarck

Sat 6/7

1:29 pm-3:35 pm

Nonstop2h 06m

Chicago O'Hare Intl

Tue 6/10

10:26 am-12:59 pm

Nonstop2h 33m

$264

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

Fri 6/6

11:05 am-5:09 pm

1 stop6h 04m

Lambert-St Louis

Wed 6/25

6:30 am-10:33 am

1 stop4h 03m

$269

BismarckChicago

BIS - MDW

BISMDW

Bismarck

Wed 7/16

7:31 am-1:02 pm

1 stop5h 31m

Chicago Midway

Sat 7/19

9:30 am-4:46 pm

2 stops7h 16m

$300

BismarckChicago

BIS - ORD

BISORD

Bismarck

Sat 5/31

5:09 pm-12:25 am

1 stop7h 16m

Chicago O'Hare Intl

Wed 6/25

5:02 am-10:34 am

1 stop5h 32m

$319

BismarckChicago

BIS - ORD

BISORD

Bismarck

Sun 5/25

2:59 pm-6:19 am

2 stops15h 20m

$206

BismarckChicago

BIS - MDW

BISMDW

Bismarck

Mon 5/19

1:12 pm-5:45 pm

1 stop4h 33m

$220

BismarckChicago

BIS - ORD

BISORD

Bismarck

Wed 5/21

7:30 am-11:47 am

1 stop4h 17m

$220

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 11 results
1
2

Best time to book a flight from Bismarck to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois 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 Illinois

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated April 24, 2025.
Read through reviews of airlines operating flights from Bismarck to Illinois, such as Delta, United Airlines and American Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,685 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Bismarck to Illinois. 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 Illinois?

    Bismarck (BIS) is the airport you will fly out of if you book a flight from Bismarck to Illinois. It is only a 2.5 mi journey to Bismarck (BIS) from Bismarck’s city center.

  • What are the cheapest airlines to fly from Bismarck to Illinois one-way?

    One-way options have recently been found by users for as low as $206 on American Airlines. Other airlines that offer cheap prices include Delta from $220 and United Airlines from $309 one-way.

  • What are the most popular routes from Bismarck to Illinois?

    The most popular route from Bismarck to Illinois is Bismarck - Chicago O'Hare Intl. You may also consider Bismarck - Chicago Midway or Bismarck - Lambert-St Louis.

  • What are the cheapest flights from Bismarck to Illinois?

    Looking for the cheapest flight from Bismarck to Illinois? While on average our users pay $374, our data indicates the cheapest price to be $99. The most popular route (Bismarck - Chicago O'Hare Intl), is priced around $234.

  • Can I find deals for flights from Bismarck to Illinois that include hotel bookings?

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

  • How can I find direct flights from Bismarck to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bismarck to Illinois.

  • Can I find deals for business class flights from Bismarck to Illinois?

    Yes. Cheapflights offers flight deals from Bismarck to Illinois 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 Illinois?

    Currently, August is the cheapest month in which you can book a flight from Bismarck to Illinois (average of $245). Flying from Bismarck to Illinois in March is currently the most expensive (average of $321). 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

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 for Bismarck to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Fargo to Denver flights
Fargo to Dallas/Fort Worth flights
Fargo to O'Hare Intl flights
Fargo to John F Kennedy Intl flights
Fargo to Seattle flights
Fargo to Sky Harbor Intl flights
Bismarck to Denver flights
Fargo to Boston flights
Fargo to Las Vegas flights
Fargo to Orlando flights
Fargo to LaGuardia flights
Fargo to Midway flights
Fargo to Fort Myers flights
Fargo to Tampa flights
Fargo to Nashville flights
Fargo to Los Angeles flights
Fargo to Columbus flights
Fargo to San Francisco flights
Bismarck to Las Vegas flights
Fargo to Newark flights
Fargo to San Diego flights
Bismarck to Dulles Intl flights
Bismarck to Dallas/Fort Worth flights
Fargo to Atlanta flights
Bismarck to Reagan-National flights
Bismarck to Tampa flights
Fargo to Portland flights
Bismarck to Seattle flights
Bismarck to Austin flights
Fargo to Minneapolis flights
Fargo to Dulles Intl flights
Fargo to Sarasota flights
Fargo to Detroit flights
Jamestown to Denver flights
Bismarck to Baltimore flights
Bismarck to Anchorage flights
Bismarck to Orlando flights
Bismarck to O'Hare Intl flights
Fargo to Phoenix-Mesa Gateway flights
Fargo to Austin flights
Fargo to Baltimore flights
Fargo to Reagan-National flights
Fargo to Key West flights
Bismarck to Minneapolis flights
Fargo to Ontario flights
Bismarck to Portland flights
Fargo to Anchorage flights
Fargo to Kansas City flights
Fargo to Asheville flights
Bismarck to Spokane flights

Top 3 airlines flying from Bismarck to Illinois

Discover the top 3 airlines that operate flights from Bismarck to Illinois. 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 2,558,603 searches. Data last updated April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$401FlexibilityNo cancel feeOn-time69%
DeltaCheapest$233Average$413FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$304Average$418FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.