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Cheap flights from Illinois to Bismarck from $171

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Bismarck departing on 8/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to Bismarck

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:42 pm - 11:12 pm
STL
-
BIS
5h 30m
1 stop
Delta Logo
5:00 am - 10:23 am
BIS
-
STL
5h 23m
1 stop
$309Delta
Wed, Aug 19 - Sun, Aug 23
American Airlines Logo
10:22 am - 10:44 pm
STL
-
BIS
12h 22m
2 stops
American Airlines Logo
6:45 am - 12:15 pm
BIS
-
STL
5h 30m
1 stop
$314American Airlines
Wed, Aug 19 - Wed, Aug 26
Delta Logo
8:36 am - 12:46 pm
ORD
-
BIS
4h 10m
1 stop
Delta Logo
5:42 pm - 9:25 pm
BIS
-
ORD
3h 43m
1 stop
$315Delta
Sat, Jun 20 - Tue, Jun 23
Delta Logo
6:30 am - 12:46 pm
ORD
-
BIS
6h 16m
1 stop
Delta Logo
1:26 pm - 8:31 pm
BIS
-
ORD
7h 05m
2 stops
$320Delta
Sat, Jun 20 - Tue, Jun 23
Delta Logo
5:42 pm - 11:12 pm
STL
-
BIS
5h 30m
1 stop
Delta Logo
5:36 pm - 11:26 pm
BIS
-
STL
5h 50m
1 stop
$324Delta
Wed, Aug 19 - Sun, Aug 23
American Airlines Logo
10:15 am - 12:46 pm
ORD
-
BIS
2h 31mnonstop
American Airlines Logo
1:01 pm - 3:25 pm
BIS
-
ORD
2h 24mnonstop
$327American Airlines
Sat, Jul 4 - Sun, Jul 12
Delta Logo
6:21 am - 10:40 am
STL
-
BIS
4h 19m
1 stop
Delta Logo
5:00 am - 10:28 am
BIS
-
STL
5h 28m
1 stop
$329Delta
Tue, Jul 14 - Sat, Jul 18
American Airlines Logo
9:45 am - 12:17 pm
ORD
-
BIS
2h 32mnonstop
American Airlines Logo
12:47 pm - 3:11 pm
BIS
-
ORD
2h 24mnonstop
$337American Airlines
Wed, Jun 17 - Sun, Jun 21
American Airlines Logo
7:02 am - 1:30 pm
ORD
-
BIS
6h 28m
1 stop
American Airlines Logo
12:47 pm - 3:11 pm
BIS
-
ORD
2h 24mnonstop
$342American Airlines
Sat, Jun 20 - Tue, Jun 23
American Airlines Logo
10:00 am - 12:28 pm
ORD
-
BIS
2h 28mnonstop
American Airlines Logo
1:55 pm - 11:10 pm
BIS
-
ORD
9h 15m
1 stop
$347American Airlines
Wed, Aug 5 - Mon, Aug 10

Delta flights from Illinois to Bismarck

Our best Delta deals on Illinois to Bismarck flight tickets
Delta
Aug 19
STL5:42 pmLambert-St Louis
5h 30m
1 stop
BIS11:12 pmBismarck
Aug 23
BIS5:00 amBismarck
5h 23m
1 stop
STL10:23 amLambert-St Louis
$309
Delta
Jun 20
ORD8:36 amChicago O'Hare Intl
4h 10m
1 stop
BIS12:46 pmBismarck
Jun 23
BIS5:42 pmBismarck
3h 43m
1 stop
ORD9:25 pmChicago O'Hare Intl
$315
Delta
Jun 20
ORD6:30 amChicago O'Hare Intl
6h 16m
1 stop
BIS12:46 pmBismarck
Jun 23
BIS1:26 pmBismarck
7h 05m
2 stops
ORD8:31 pmChicago O'Hare Intl
$320

American Airlines flights from Illinois to Bismarck

Our best American Airlines deals on Illinois to Bismarck flight tickets
American Airlines
Aug 19
STL10:22 amLambert-St Louis
12h 22m
2 stops
BIS10:44 pmBismarck
Aug 26
BIS6:45 amBismarck
5h 30m
1 stop
STL12:15 pmLambert-St Louis
$314
American Airlines
May 28
ORD9:45 amChicago O'Hare Intl
2h 27m
BIS12:12 pmBismarck
Jun 3
BIS12:54 pmBismarck
2h 23m
ORD3:17 pmChicago O'Hare Intl
$322
American Airlines
Jul 4
ORD10:15 amChicago O'Hare Intl
2h 31m
BIS12:46 pmBismarck
Jul 12
BIS1:01 pmBismarck
2h 24m
ORD3:25 pmChicago O'Hare Intl
$327

momondo Fare Finder

 
Customize your flight search to find flights from Illinois 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, momondo users made 832,500 searches. Data last updated May 20, 2026.
Use the filters below to find and compare flights from Illinois to Bismarck that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBismarck

STL - BIS

STLBIS

Lambert-St Louis

Wed 8/19

5:42 pm-11:12 pm

1 stop5h 30m

Bismarck

Sun 8/23

5:00 am-10:23 am

1 stop5h 23m

$309

St. LouisBismarck

STL - BIS

STLBIS

Lambert-St Louis

Wed 8/19

10:22 am-10:44 pm

2 stops12h 22m

Bismarck

Wed 8/26

6:45 am-12:15 pm

1 stop5h 30m

$314

ChicagoBismarck

ORD - BIS

ORDBIS

Chicago O'Hare Intl

Sat 6/20

8:36 am-12:46 pm

1 stop4h 10m

Bismarck

Tue 6/23

5:42 pm-9:25 pm

1 stop3h 43m

$315

ChicagoBismarck

ORD - BIS

ORDBIS

Chicago O'Hare Intl

Sat 6/20

6:30 am-12:46 pm

1 stop6h 16m

Bismarck

Tue 6/23

1:26 pm-8:31 pm

2 stops7h 05m

$320

St. LouisBismarck

STL - BIS

STLBIS

Lambert-St Louis

Wed 8/19

5:42 pm-11:12 pm

1 stop5h 30m

Bismarck

Sun 8/23

5:36 pm-11:26 pm

1 stop5h 50m

$324
Quickest round-trip

ChicagoBismarck

ORD - BIS

ORDBIS

Chicago O'Hare Intl

Sat 7/4

10:15 am-12:46 pm

Nonstop2h 31m

Bismarck

Sun 7/12

1:01 pm-3:25 pm

Nonstop2h 24m

$327

St. LouisBismarck

STL - BIS

STLBIS

Lambert-St Louis

Tue 7/14

6:21 am-10:40 am

1 stop4h 19m

Bismarck

Sat 7/18

5:00 am-10:28 am

1 stop5h 28m

$329

ChicagoBismarck

ORD - BIS

ORDBIS

Chicago O'Hare Intl

Wed 6/17

9:45 am-12:17 pm

Nonstop2h 32m

Bismarck

Sun 6/21

12:47 pm-3:11 pm

Nonstop2h 24m

$337

ChicagoBismarck

ORD - BIS

ORDBIS

Chicago O'Hare Intl

Sat 6/20

7:02 am-1:30 pm

1 stop6h 28m

Bismarck

Tue 6/23

12:47 pm-3:11 pm

Nonstop2h 24m

$342

ChicagoBismarck

ORD - BIS

ORDBIS

Chicago O'Hare Intl

Wed 8/5

10:00 am-12:28 pm

Nonstop2h 28m

Bismarck

Mon 8/10

1:55 pm-11:10 pm

1 stop9h 15m

$347

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bismarck from

How to get the cheapest flight ticket from Illinois to Bismarck

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Bismarck?

In general, July is the cheapest month to fly from Illinois to Bismarck. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $145. If you aren’t able to travel during the month of July, then book flights to Bismarck from Illinois during January instead. Flights to Bismarck in January, while not as cheap as those in July, still average around $199.

What is the cheapest day to depart on your flight to Bismarck?

The cheapest day to depart from Illinois to Bismarck is on a Thursday. Travelers who choose to depart for Bismarck on a Thursday will often find tickets for as low as $319. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $734. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bismarck.

What is the cheapest Illinois to Bismarck flight route?

Fly from Chicago O'Hare Intl to Bismarck for the best Illinois - Bismarck flight prices

What cabin class options are available on Illinois to Bismarck flights?

There is only 1 cabin class available to choose from on Illinois to Bismarck flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Bismarck flights?

You could potentially save up to 1% on your flight if you consider stops on a Illinois to Bismarck flight.

Cheap Illinois to Bismarck flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Bismarck

Best Price Found

$425

Fastest flight time

2h 28m

Direct flights

Every day

Airports in Bismarck

1 airport
The best flight deal from Illinois to Bismarck found on momondo in the last 72 hours is $425
The fastest flight from Illinois to Bismarck takes 2h 28m
Direct flights go from Illinois to Bismarck every day.
There is 1 airport in Bismarck. From Illinois there are direct flights to Bismarck (BIS).
Search flight deals

Frequently asked questions about flying from Illinois to Bismarck

  • When did momondo last update prices for flights from Illinois to Bismarck Airport?

    Prices for flights from Illinois to Bismarck Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Bismarck Airport?

  • How old do you have to be to fly from Illinois to Bismarck Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Bismarck Airport.

  • What documentation or ID do you need to fly to Bismarck Airport?

    The travel and health documents you'll need for your trip to Bismarck Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bismarck Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Illinois to Bismarck?

Best airlines flying from Illinois to Bismarck

Compare and see reviews for airlines that fly from Illinois to Bismarck with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $259Free CancellationRating
7.1
11,642 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Bismarck?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Bismarck. momondo saves you time and could save you money on your trip.

Can I find flights from Illinois to Bismarck with flexible booking policies on momondo?

All flight searches from Illinois to Bismarck on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Illinois to Bismarck?

Once all potential Illinois to Bismarck flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to Bismarck right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Illinois to Bismarck now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bismarck and let you know when they change.

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