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$230+ Cheap flights from Bismarck (BIS) to Illinois

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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — ORD
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$230
(American Airlines)

Popular in

November

Cheapest in

February

Average price

$330

Good round-trip deal

$288 or less

Good one-way deal

$259 or less
From Bismarck to Illinois
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Highest demand for flights based on searches. 17% potential increase in price ($72 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Bismarck to Illinois.
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Price to beat on a one-way 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 junio 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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.
vie. 8/151:22 pmBIS - ORD
Nonstop2h 13mAmerican Airlines
mié. 8/2010:26 amORD - BIS
Nonstop2h 26mAmerican Airlines
Deal found 6/11$230
This Delta deal was found by Cheapflights users on 6/11. 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.
vie. 8/155:42 pmBIS - STL
1 stop5h 40mDelta
lun. 8/185:30 pmSTL - BIS
1 stop5h 48mDelta
Deal found 6/11$249
This Delta deal was found by Cheapflights users on 6/10. 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.
sáb. 7/198:00 amBIS - MDW
1 stop5h 06mDelta
mié. 7/239:25 amMDW - BIS
2 stops7h 29mDelta
Deal found 6/10$264
This Delta deal was found by Cheapflights users on 6/10. 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.
sáb. 7/198:00 amBIS - ORD
1 stop4h 02mDelta
mié. 7/237:10 amORD - BIS
2 stops9h 44mDelta
Deal found 6/10$264
This American Airlines deal was found by Cheapflights users on 6/12. 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.
mié. 8/61:22 pmBIS - STL
1 stop5h 01mAmerican Airlines
sáb. 8/96:00 amSTL - BIS
2 stops8h 20mAmerican Airlines
Deal found 6/12$298
This United Airlines deal was found by Cheapflights users on 6/10. 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.
mar. 7/19:20 amBIS - STL
1 stop7h 09mUnited Airlines
sáb. 7/54:45 pmSTL - BIS
1 stop6h 53mUnited Airlines
Deal found 6/10$319
This Mytrip deal was found by Cheapflights users on 6/11. 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.
jue. 7/2410:56 pmBIS - ORD
2 stops33h 59mMultiple Airlines
dom. 7/277:08 amORD - BIS
1 stop13h 57mMultiple Airlines
Deal found 6/11$452
This United Airlines deal was found by Cheapflights users on 6/12. 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.
jue. 11/139:08 amBIS - ORD
1 stop14h 51mUnited Airlines
lun. 11/179:23 pmORD - BIS
2 stops23h 28mUnited Airlines
Deal found 6/12$475

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 junio 12, 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

vie. 8/15

1:22 pm-3:35 pm

Nonstop2h 13m

Chicago O'Hare Intl

mié. 8/20

10:26 am-12:52 pm

Nonstop2h 26m

$230

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

vie. 8/15

5:42 pm-11:22 pm

1 stop5h 40m

Lambert-St Louis

lun. 8/18

5:30 pm-11:18 pm

1 stop5h 48m

$249

BismarckChicago

BIS - MDW

BISMDW

Bismarck

sáb. 7/19

8:00 am-1:06 pm

1 stop5h 06m

Chicago Midway

mié. 7/23

9:25 am-4:54 pm

2 stops7h 29m

$264

BismarckChicago

BIS - ORD

BISORD

Bismarck

sáb. 7/19

8:00 am-12:02 pm

1 stop4h 02m

Chicago O'Hare Intl

mié. 7/23

7:10 am-4:54 pm

2 stops9h 44m

$264

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

mié. 7/9

3:00 pm-11:51 pm

2 stops8h 51m

Lambert-St Louis

lun. 7/14

6:00 am-12:09 pm

1 stop6h 09m

$299

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

mar. 7/1

9:20 am-4:29 pm

1 stop7h 09m

Lambert-St Louis

sáb. 7/5

4:45 pm-11:38 pm

1 stop6h 53m

$319

BismarckChicago

BIS - ORD

BISORD

Bismarck

jue. 7/24

10:56 pm-8:55 am

2 stops33h 59m

Chicago O'Hare Intl

dom. 7/27

7:08 am-9:05 pm

1 stop13h 57m

$452

BismarckChicago

BIS - ORD

BISORD

Bismarck

jue. 11/13

9:08 am-11:59 pm

1 stop14h 51m

Chicago O'Hare Intl

lun. 11/17

9:23 pm-8:51 pm

2 stops23h 28m

$475

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

jue. 6/26

9:59 pm-11:36 am

2 stops13h 37m

$231

BismarckChicago

BIS - ORD

BISORD

Bismarck

vie. 7/4

2:00 pm-7:44 am

2 stops17h 44m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 13 results
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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

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

Find hourly flight availability from Bismarck to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Bismarck to Illinois as you normally would.

Weekly flight availability from Bismarck to Illinois

Explore weekly flight availability from Bismarck to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated junio 12, 2025.

The most flights from BIS to USIL are scheduled on a Monday (2 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

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 junio 12, 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
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $233 on United Airlines. Other airlines that offer cheap prices include Delta from $322 and American Airlines from $367 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 $348, our data indicates the cheapest price to be $125. The most popular route (Bismarck - Chicago O'Hare Intl), is priced around $239.

  • 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

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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 2 airlines flying from Bismarck to Illinois

Discover the top 2 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$218Average$443FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$247Average$418FlexibilityNo cancel feeOn-time71%

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