$148 Find Cheap Flights from Bismarck to Illinois - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Bismarck to Illinois departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bismarck to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bismarck to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Bismarck to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Bismarck to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Bismarck to Illinois

Sat, Sep 12 - Sat, Sep 19
American Airlines Logo
1:13 pm - 3:40 pm
BIS
-
ORD
2h 27mnonstop
American Airlines Logo
10:06 am - 12:36 pm
ORD
-
BIS
2h 30mnonstop
$295American Airlines
Tue, Nov 3 - Sat, Nov 7
American Airlines Logo
2:28 pm - 10:23 pm
BIS
-
ORD
7h 55m
1 stop
American Airlines Logo
9:40 am - 12:25 pm
ORD
-
BIS
2h 45mnonstop
$305American Airlines
Tue, Oct 6 - Sat, Oct 10
Delta Logo
7:31 am - 11:51 am
BIS
-
MDW
4h 20m
1 stop
Delta Logo
9:55 am - 4:54 pm
MDW
-
BIS
6h 59m
1 stop
$315Delta
Tue, Oct 6 - Sat, Oct 10
Delta Logo
5:00 am - 8:43 am
BIS
-
ORD
3h 43m
1 stop
Delta Logo
3:50 pm - 7:57 pm
ORD
-
BIS
4h 07m
1 stop
$315Delta
Thu, Dec 3 - Sun, Dec 6
American Airlines Logo
6:00 am - 12:32 pm
BIS
-
STL
6h 32m
1 stop
American Airlines Logo
6:00 am - 12:21 pm
STL
-
BIS
6h 21m
1 stop
$319American Airlines
Wed, Oct 7 - Tue, Oct 13
Delta Logo
5:00 am - 12:33 pm
BIS
-
MDW
7h 33m
2 stops
Delta Logo
5:35 pm - 11:21 pm
MDW
-
BIS
5h 46m
1 stop
$320Delta
Sun, Jul 26 - Wed, Jul 29
Multiple Airlines Logo
12:06 pm - 6:15 pm
BIS
-
STL
30h 09m
1 stop
Multiple Airlines Logo
7:03 pm - 11:16 am
STL
-
BIS
16h 13m
1 stop
$349Multiple Airlines
Tue, Oct 27 - Sat, Oct 31
United Airlines Logo
9:15 am - 4:26 pm
BIS
-
STL
7h 11m
1 stop
United Airlines Logo
1:30 pm - 8:03 pm
STL
-
BIS
6h 33m
1 stop
$399United Airlines
Tue, Oct 27 - Sat, Oct 31
United Airlines Logo
9:15 am - 4:26 pm
BIS
-
STL
7h 11m
1 stop
United Airlines Logo
1:30 pm - 8:03 pm
STL
-
BIS
6h 33m
1 stop
$444United Airlines
Sun, Jul 26 - Wed, Jul 29
Multiple Airlines Logo
12:06 pm - 6:15 pm
BIS
-
STL
30h 09m
1 stop
Multiple Airlines Logo
8:08 pm - 11:16 am
STL
-
BIS
15h 08m
2 stops
$471Multiple Airlines
Booking Insights

KAYAK's insights & trends for Bismarck to Illinois flights

Get data-powered insights and trends into flights from Bismarck to Illinois to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Bismarck to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Bismarck found in the last 5 days was to Chicago, at $338 round-trip. The most popular route is from Bismarck (BIS) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $338.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Bismarck to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally in the afternoon, when round-trip flights cost $470 on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $485.

Can I save money by flying with a layover from Bismarck to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $339, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Bismarck to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Bismarck to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Bismarck to Illinois is November, when tickets cost $199 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $404 and $361 respectively.

What’s the cheapest day of the week to fly from Bismarck to Illinois?

The average price of all round-trip flights from Bismarck to Illinois clicked on KAYAK for each day over the last 12 months.

When flying from Bismarck to Illinois, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Bismarck, you’ll find the best rates on Fridays and the most expensive ones on Mondays.

Good to know

Low seasonJanuary
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 10% increase in price.

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Bismarck to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Bismarck to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Bismarck to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Bismarck to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Bismarck to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Bismarck to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Bismarck to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Bismarck to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Bismarck to the following destinations at these prices or less: Chicago $381 one-way - $476 round-trip

Reviews of the top airlines flying from Bismarck to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Bismarck to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Bismarck to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8396 reviews
7.2Food
8.1Boarding
7.8Comfort
8.5Crew
7.8Entertainment
Airline reviews

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

4.0 OkayMichelle, Jun 2026
ATL - PIT
Read more Delta reviews

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Flight was great! This flight from Atlanta was even better than when I paid for Comfort from SNA to Atlanta.

Connection flights should be spaced out farther because too close I missed my connection.

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

On time! There were plenty of airport employees who were able to keep us moving in the right direction. The crew on the plane were professional.

Left /arrived on time. Decent seat space. Like the wifi/plugs and entertainment. Windows and tray table were kinda gross. Attendants didn't start snack service til 40mins before landing. Two rows before us, captain came on to say there's turbulence and recalled staff to seats. So, no drink/snack. Later, attendants didn't stop to see if we had trash nor even look our way. Felt invisible! Almost all pilot announcements were not only unintelligible, but so quiet. We had no idea what she said.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Gate agent was unhelpful for handicapped boarding. Flight attendant seemed untrained.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

The flight attendants were extremely sourly and borderline rude. I did not feel appreciated as an AA customer once.

The flight from LA to Chicago was smooth and service was very good overall.

The Mario was so helpful and provided amazing customer service however l have being waiting for a callback for almost a week now and have not heard anything further after l informed them l wanted to change my date of traveling because of my hospital appointment even send them proof and l was unable to use manag your booking on their website is a bit frustrating and l would appreciate an update on My request as soon as possible. And have called them times without numbers no response

Awful, tons of delays, I got into Chicago multiple hours late meaning I hit the very traffic I tried so desperately to avoid. Just empty apologies from American Airlines text alerts. Trash behavior from a trash airline.

They lost my baggage and I am still struggling to the information and update

Requested early boarding to disinfect seat, tray table, etc. before general boarding. Instructed to board after wheelchair passengers. Waited on jet bridge behind 12 wheelchair passengers. Stopped immediately after entering plane to wait for gate agent in rear of plane cleaning a seat that was wet, got to my row and found both seats adjacent to mine already occupied, with the lack of room making it impossible for me to clean my own space and defeating the purpose of my boarding early. Cleaned the armrests and tray table as best I could.

The wifi experience is awful. I had to try again and again, taking over 30 minutes, to connect to the wifi. I had to watch the same two ads over and over until I was finally successful. Once connected, it was anything but "high speed" and disconnected at least three times during the flight.

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

Very good I can’t complain one bit. Thank you American Airlines for making my flight enjoyable and safe!

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

Everything you need to know for your flight from Bismarck to Illinois

Information on your arrival and departure airports