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$141+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — ORD
Jul 21 — Jul 281
Mon 7/21
Mon 7/28
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 July 16, 2025.

Round-trip from

$199
(American Airlines)

One-way from

$141
(Mytrip)

Popular in

November

Cheapest in

February

Average price

$292

Good round-trip deal

$279 or less

Good one-way deal

$209 or less
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. 17% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 16, 2025.

This American Airlines deal was found by Cheapflights users on 7/16. 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 8/231:22 pmBIS - ORD
Nonstop2h 13mAmerican Airlines
Tue 8/2610:26 amORD - BIS
Nonstop2h 26mAmerican Airlines
Deal found 7/16$199
This Delta deal was found by Cheapflights users on 7/14. 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 8/3012:14 pmBIS - MDW
1 stop5h 23mDelta
Sun 8/317:17 pmMDW - BIS
1 stop4h 01mDelta
Deal found 7/14$219
This Delta deal was found by Cheapflights users on 7/14. 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 8/3012:14 pmBIS - ORD
1 stop4h 50mDelta
Sun 8/3111:00 amORD - BIS
1 stop3h 39mDelta
Deal found 7/14$219
This American Airlines deal was found by Cheapflights users on 7/16. 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 10/101:27 pmBIS - STL
1 stop6h 59mAmerican Airlines
Sun 10/127:15 amSTL - BIS
1 stop5h 42mAmerican Airlines
Deal found 7/16$279
This Delta deal was found by Cheapflights users on 7/14. 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 7/245:00 amBIS - STL
1 stop3h 34mDelta
Wed 7/306:30 amSTL - BIS
1 stop4h 07mDelta
Deal found 7/14$339
This United Airlines deal was found by Cheapflights users on 7/16. 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 11/145:15 pmBIS - STL
2 stops22h 31mUnited Airlines
Mon 11/174:43 pmSTL - BIS
1 stop6h 56mUnited Airlines
Deal found 7/16$412
This Mytrip deal was found by Cheapflights users on 7/14. 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.
Sun 7/279:55 pmBIS - STL
3 stops14h 15mMultiple Airlines
Wed 7/3011:24 amSTL - BIS
3 stops34h 42mMultiple Airlines
Deal found 7/14$630

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 July 16, 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

Sat 8/23

1:22 pm-3:35 pm

Nonstop2h 13m

Chicago O'Hare Intl

Tue 8/26

10:26 am-12:52 pm

Nonstop2h 26m

$199

BismarckChicago

BIS - MDW

BISMDW

Bismarck

Sat 8/30

12:14 pm-5:37 pm

1 stop5h 23m

Chicago Midway

Sun 8/31

7:17 pm-11:18 pm

1 stop4h 01m

$219

BismarckChicago

BIS - ORD

BISORD

Bismarck

Sat 8/30

12:14 pm-5:04 pm

1 stop4h 50m

Chicago O'Hare Intl

Sun 8/31

11:00 am-2:39 pm

1 stop3h 39m

$219

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

Fri 10/10

1:27 pm-8:26 pm

1 stop6h 59m

Lambert-St Louis

Sun 10/12

7:15 am-12:57 pm

1 stop5h 42m

$279

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

Thu 7/31

5:42 pm-11:20 pm

1 stop5h 38m

Lambert-St Louis

Mon 8/4

5:37 pm-11:20 pm

1 stop5h 43m

$284

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

Fri 11/14

5:15 pm-3:46 pm

2 stops22h 31m

Lambert-St Louis

Mon 11/17

4:43 pm-11:39 pm

1 stop6h 56m

$412

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

Sun 7/27

9:55 pm-12:10 pm

3 stops14h 15m

Lambert-St Louis

Wed 7/30

11:24 am-10:06 pm

3 stops34h 42m

$630

BismarckChicago

BIS - ORD

BISORD

Bismarck

Thu 9/11

11:36 am-4:49 am

1 stop17h 13m

$141

BismarckChicago

BIS - ORD

BISORD

Bismarck

Sat 8/16

5:01 am-4:13 pm

2 stops11h 12m

$167

BismarckChicago

BIS - ORD

BISORD

Bismarck

Mon 1/12

2:56 pm-2:20 pm

2 stops23h 24m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/14

Showing 1-10 of 12 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 July 16, 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.

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 July 16, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Bismarck to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,957 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

8.0

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
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

8.0

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
8,863 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

8.0

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
7,957 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

8.0

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 $167 on Delta. Other airlines that offer cheap prices include American Airlines from $244 and United Airlines from $306 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 most reliable airlines from Bismarck to Illinois?

    Before booking your flight to Illinois from Bismarck, check out the most reliable airlines to get you to your destination on time: American Airlines (59%), Qatar Airways (59%), Envoy Air( 59%).

  • What are the cheapest flights from Bismarck to Illinois?

    Looking for the cheapest flight from Bismarck to Illinois? While on average our users pay $332, our data indicates the cheapest price to be $124. The most popular route (Bismarck - Chicago O'Hare Intl), is priced around $219.

  • 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

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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 July 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$218Average$488FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$247Average$418FlexibilityNo cancel feeOn-time71%

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