$96+ Cheap flights from North Dakota 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 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from North Dakota to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from North Dakota to Illinois
Keep the following information in mind while searching for North Dakota to Illinois flight deals. Data was last updated June 18, 2025.
Round-trip from | $204 (American Airlines) |
|---|---|
One-way from | $96 (Frontier) |
Popular in | November |
Cheapest in | January |
Average price | $326 |
Good round-trip deal | $288 or less |
Good one-way deal | $246 or less |
Find flight deals from North Dakota to Illinois
Cheapest flights from North Dakota to IllinoisExplore the most affordable flight options available from North Dakota to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.
Explore the most affordable flight options available from North Dakota to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.
This American Airlines deal was found by Cheapflights users on 6/17. 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.
This American Airlines deal was found by Cheapflights users on 6/18. 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.
This Delta deal was found by Cheapflights users on 6/18. 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.
This Delta deal was found by Cheapflights users on 6/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/18. 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.
This Priceline deal was found by Cheapflights users on 6/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/17. 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.
This Delta deal was found by Cheapflights users on 6/18. 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.
This United Airlines deal was found by Cheapflights users on 6/17. 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.
This United Airlines deal was found by Cheapflights users on 6/16. 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.
This Delta deal was found by Cheapflights users on 6/15. 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.
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Cheapflights Fare Finder
Customize your flight search to find flights from North Dakota 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 June 18, 2025.
Use the filters below to find and compare flights from North Dakota to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BismarckChicago
BIS - ORD
BISORD
Bismarck
Sat 8/9
1:22 pm-3:35 pm
Nonstop2h 13m
Chicago O'Hare Intl
Wed 8/13
10:26 am-12:52 pm
Nonstop2h 26m
FargoChicago
FAR - ORD
FARORD
Fargo Hector Field
Fri 9/26
7:00 am-8:58 am
Nonstop1h 58m
Chicago O'Hare Intl
Sun 9/28
3:08 pm-5:06 pm
Nonstop1h 58m
BismarckChicago
BIS - ORD
BISORD
Bismarck
Wed 9/3
5:00 am-8:24 am
1 stop3h 24m
Chicago O'Hare Intl
Sat 9/27
9:30 am-2:52 pm
1 stop5h 22m
BismarckChicago
BIS - MDW
BISMDW
Bismarck
Tue 7/29
5:00 am-12:29 pm
2 stops7h 29m
Chicago Midway
Sat 8/2
9:24 am-2:42 pm
1 stop5h 18m
FargoChicago
FAR - ORD
FARORD
Fargo Hector Field
Thu 8/28
5:00 am-8:24 am
1 stop3h 24m
Chicago O'Hare Intl
Sun 8/31
8:25 am-12:49 pm
1 stop4h 24m
FargoChicago
FAR - MDW
FARMDW
Fargo Hector Field
Sat 7/26
11:03 am-5:10 pm
1 stop6h 07m
Chicago Midway
Tue 7/29
7:21 pm-11:46 pm
1 stop4h 25m
MinotChicago
MOT - ORD
MOTORD
Minot
Tue 7/1
12:33 pm-4:46 pm
1 stop4h 13m
Chicago O'Hare Intl
Sun 7/6
6:00 am-11:53 am
1 stop5h 53m
FargoChicago
FAR - ORD
FARORD
Fargo Hector Field
Thu 7/3
4:35 pm-6:43 pm
Nonstop2h 08m
Chicago O'Hare Intl
Mon 7/7
4:14 pm-6:19 pm
Nonstop2h 05m
BismarckSt. Louis
BIS - STL
BISSTL
Bismarck
Tue 7/1
11:30 am-4:29 pm
1 stop4h 59m
Lambert-St Louis
Sat 7/5
4:45 pm-11:38 pm
1 stop6h 53m
FargoSt. Louis
FAR - STL
FARSTL
Fargo Hector Field
Sat 7/19
7:05 am-10:33 am
1 stop3h 28m
Lambert-St Louis
Tue 7/29
5:37 pm-11:46 pm
1 stop6h 09m
Best time to book a flight from North Dakota to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from North Dakota with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from North Dakota to Illinois
What is the cheapest month to book a flight from North Dakota to Illinois?
Currently, August is the cheapest month in which you can book a flight from North Dakota to Illinois (average of $245). Flying from North Dakota 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.
What is the cheapest time of day to fly from ND to IL?
Find hourly flight availability from North Dakota 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 June 18, 2025.
When flying from North Dakota to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from North Dakota to Illinois
Explore weekly flight availability from North Dakota 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 June 18, 2025.
The most flights from USND to USIL are scheduled on a Monday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 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 June 18, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and Allegiant Air from North Dakota to Illinois by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Entertainment
Comfort
Food
Overall
Boarding
Reviews
Kim,May 2025
PIH - SLC
Crew
Entertainment
Comfort
Food
Overall
Boarding
Reviews
Kim,May 2025
PIH - SLC
Crew
Entertainment
Comfort
Food
Overall
Boarding
Reviews
Kim,May 2025
PIH - SLC
Crew
Entertainment
Comfort
Food
Overall
Boarding
Reviews
Kim,May 2025
PIH - SLC
Crew
Entertainment
Comfort
Food
Overall
Boarding
Reviews
Kim,May 2025
PIH - SLC
Crew
Entertainment
Comfort
Food
Overall
Boarding
Reviews
Kim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from North Dakota to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for North Dakota to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Top 3 airlines flying from North Dakota to Illinois
Discover the top 3 airlines that operate flights from North Dakota 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 June 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$209 | Average$349 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$218 | Average$454 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$229 | Average$346 | FlexibilityNo cancel fee | On-time69% |