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$172+ 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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — ORD
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
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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 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$234
(United Airlines)

One-way from

$172
(Delta)

Popular in

November

Cheapest in

February

Average price

$254

Good round-trip deal

$293 or less
Provider with most accurate pricing for Bismarck-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Bismarck-Chicago (CHI) flights.
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From Bismarck to Illinois
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One-way flight from Bismarck to Illinois
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Highest demand for flights based on searches. 13% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Bismarck to Illinois.
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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 2, 2025.

This American Airlines deal was found by Cheapflights users on 3/31. 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.
Thu 10/212:39 pmBIS - ORD
Nonstop2h 14mAmerican Airlines
Mon 10/610:20 amORD - BIS
Nonstop2h 20mAmerican Airlines
Deal found 3/31$229
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/291:55 pmBIS - ORD
1 stop7h 25mUnited Airlines
Tue 5/62:35 pmORD - BIS
1 stop6h 20mUnited Airlines
Deal found 4/1$234
This Delta deal was found by Cheapflights users on 4/1. 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 6/105:00 amBIS - STL
1 stop5h 34mDelta
Tue 6/1711:29 amSTL - BIS
1 stop5h 22mDelta
Deal found 4/1$243
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/182:00 pmBIS - ORD
1 stop4h 59mDelta
Sun 4/206:35 amORD - BIS
1 stop4h 09mDelta
Deal found 3/31$279
This Delta deal was found by Cheapflights users on 4/2. 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 4/311:28 amBIS - MDW
1 stop6h 50mDelta
Sat 4/57:13 pmMDW - BIS
1 stop4h 18mDelta
Deal found 4/2$298
This American Airlines deal was found by Cheapflights users on 4/2. 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 6/103:00 pmBIS - STL
1 stop8h 00mAmerican Airlines
Tue 6/176:00 amSTL - BIS
2 stops8h 24mAmerican Airlines
Deal found 4/2$315
This Mytrip deal was found by Cheapflights users on 4/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/309:15 pmBIS - ORD
3 stops33h 18mMultiple Airlines
Wed 5/79:55 amORD - BIS
2 stops36h 01mMultiple Airlines
Deal found 4/1$351
This Mytrip deal was found by Cheapflights users on 4/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1712:16 pmBIS - MDW
2 stops21h 53mAllegiant Air
Mon 4/2110:59 amMDW - BIS
2 stops33h 50mAllegiant Air
Deal found 4/2$733

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 2, 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 4/29

1:55 pm-9:20 pm

1 stop7h 25m

Chicago O'Hare Intl

Tue 5/6

2:35 pm-8:55 pm

1 stop6h 20m

$234

BismarckChicago

BIS - ORD

BISORD

Bismarck

Wed 9/24

12:39 pm-2:53 pm

Nonstop2h 14m

Chicago O'Hare Intl

Thu 10/9

10:20 am-12:40 pm

Nonstop2h 20m

$239

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

Tue 6/10

5:00 am-10:34 am

1 stop5h 34m

Lambert-St Louis

Tue 6/17

11:29 am-4:51 pm

1 stop5h 22m

$243

BismarckChicago

BIS - ORD

BISORD

Bismarck

Fri 4/18

2:00 pm-6:59 pm

1 stop4h 59m

Chicago O'Hare Intl

Sun 4/20

6:35 am-10:44 am

1 stop4h 09m

$279

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

Tue 6/10

3:00 pm-11:00 pm

1 stop8h 00m

Lambert-St Louis

Tue 6/17

6:00 am-2:24 pm

2 stops8h 24m

$315

BismarckChicago

BIS - ORD

BISORD

Bismarck

Wed 4/30

9:15 pm-6:33 am

3 stops33h 18m

Chicago O'Hare Intl

Wed 5/7

9:55 am-9:56 pm

2 stops36h 01m

$351

BismarckChicago

BIS - MDW

BISMDW

Bismarck

Wed 9/24

7:31 am-1:09 pm

1 stop5h 38m

Chicago Midway

Thu 10/9

2:00 pm-7:57 pm

1 stop5h 57m

$414

BismarckChicago

BIS - MDW

BISMDW

Bismarck

Thu 4/17

12:16 pm-10:09 am

2 stops21h 53m

Chicago Midway

Mon 4/21

10:59 am-8:49 pm

2 stops33h 50m

$733

BismarckChicago

BIS - ORD

BISORD

Bismarck

Thu 5/22

5:00 am-8:24 am

1 stop3h 24m

$172

BismarckChicago

BIS - ORD

BISORD

Bismarck

Thu 5/22

12:56 pm-5:25 am

1 stop16h 29m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 13 results
1
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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 2, 2025.
Read through reviews of airlines operating flights from Bismarck to Illinois, such as Delta, United Airlines and Allegiant Air. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,897 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

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
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

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
8,616 reviews
Delta
8.0
Very good
7,897 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

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
Allegiant Air
7.3
Good
731 reviews
Delta
8.0
Very good
7,897 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

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
7,897 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

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 $172 on Delta. Other airlines that offer cheap prices include United Airlines from $372 and American Airlines from $390 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 $407, our data indicates the cheapest price to be $283. 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.

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Alternative routes for Bismarck to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$401FlexibilityNo cancel feeOn-time69%
DeltaCheapest$233Average$418FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$304Average$418FlexibilityNo cancel feeOn-time71%

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