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$78+ 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
FAR — ORD
Nov 20 — Nov 271
Thu 11/20
Thu 11/27
1 adult, Economy
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Find flight deals from North Dakota to Illinois

Cheapest flights from North Dakota to Illinois
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 October 21, 2025.

This Priceline deal was found by Cheapflights users on 10/19. 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.
Fri 11/142:50 pmFAR - ORD
1 stop9h 25mFrontier
Sun 11/166:00 amORD - FAR
1 stop8h 05mFrontier
Deal found 10/19$144
This Frontier deal was found by Cheapflights users on 10/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/32:50 pmFAR - ORD
1 stop9h 25mFrontier
Sun 11/96:00 amORD - FAR
1 stop8h 05mFrontier
Deal found 10/19$156
This Priceline deal was found by Cheapflights users on 10/20. 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.
Fri 11/142:50 pmFAR - ORD
1 stop9h 25mFrontier
Mon 11/176:00 amORD - FAR
1 stop8h 05mFrontier
Deal found 10/20$163
This Frontier deal was found by Cheapflights users on 10/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/32:50 pmFAR - ORD
1 stop9h 25mFrontier
Fri 11/76:00 amORD - FAR
1 stop8h 05mFrontier
Deal found 10/19$168
This Frontier deal was found by Cheapflights users on 10/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/72:50 pmFAR - ORD
1 stop9h 25mFrontier
Mon 11/106:00 amORD - FAR
1 stop8h 05mFrontier
Deal found 10/20$179
This Frontier deal was found by Cheapflights users on 10/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:50 pmFAR - ORD
1 stop9h 26mFrontier
Sun 11/25:00 amORD - FAR
1 stop8h 05mFrontier
Deal found 10/20$192
This Frontier deal was found by Cheapflights users on 10/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/22:50 pmFAR - ORD
1 stop9h 59mFrontier
Mon 11/36:00 amORD - FAR
1 stop8h 05mFrontier
Deal found 10/20$208
This American Airlines deal was found by Cheapflights users on 10/19. 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 12/57:13 pmFAR - ORD
Nonstop2h 17mAmerican Airlines
Sun 12/710:00 pmORD - FAR
Nonstop1h 59mAmerican Airlines
Deal found 10/19$209
This American Airlines deal was found by Cheapflights users on 10/19. 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 11/147:15 pmFAR - ORD
Nonstop2h 14mAmerican Airlines
Mon 11/174:44 pmORD - FAR
Nonstop2h 01mAmerican Airlines
Deal found 10/19$219
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Thu 11/67:30 amFAR - ORD
Nonstop2h 12mUnited Airlines
Sat 11/81:00 pmORD - FAR
Nonstop2h 08mUnited Airlines
Deal found 10/19$229
This Delta deal was found by Cheapflights users on 10/19. 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.
Tue 11/185:00 amFAR - MDW
1 stop4h 01mDelta
Wed 11/261:47 pmMDW - FAR
1 stop5h 53mDelta
Deal found 10/19$229
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Wed 11/1210:18 amFAR - ORD
Nonstop2h 15mUnited Airlines
Wed 11/268:45 amORD - FAR
Nonstop2h 15mUnited Airlines
Deal found 10/19$230

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 October 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$144
(Priceline)

One-way from

$78
(Frontier)

Popular in

July

Cheapest in

September

Average price

$303

Good round-trip deal

$317 or less

Good one-way deal

$232 or less
Provider with most accurate pricing for Fargo Hector Field-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Fargo Hector Field-Chicago (CHI) flights.
Search Deals
From North Dakota to Illinois
Search Deals
One-way flight from North Dakota to Illinois
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from North Dakota to Illinois.
Search Deals
Price to beat on a one-way flight from North Dakota to Illinois.
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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 October 21, 2025.
Use the filters below to find and compare flights from North Dakota to Illinois that are best for you.

Fly from

North Dakota

Fly to

Illinois

Route

Depart

Return

Price

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Fri 11/14

3:53 pm-6:05 pm

Nonstop2h 12m

Chicago O'Hare Intl

Sun 11/16

7:45 pm-9:56 pm

Nonstop2h 11m

$209

BismarckChicago

BIS - MDW

BISMDW

Bismarck

Sat 4/4

1:10 pm-6:08 pm

1 stop4h 58m

Chicago Midway

Wed 4/8

2:00 pm-8:07 pm

1 stop6h 07m

$219

BismarckChicago

BIS - MDW

BISMDW

Bismarck

Sat 3/14

1:10 pm-6:08 pm

1 stop4h 58m

Chicago Midway

Wed 3/18

2:00 pm-8:07 pm

1 stop6h 07m

$219

BismarckChicago

BIS - ORD

BISORD

Bismarck

Sat 4/4

5:30 pm-9:56 pm

1 stop4h 26m

Chicago O'Hare Intl

Wed 4/8

6:00 am-12:47 pm

1 stop6h 47m

$219

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Tue 11/4

10:18 am-12:33 pm

Nonstop2h 15m

Chicago O'Hare Intl

Sat 11/8

8:45 am-11:00 am

Nonstop2h 15m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Tue 12/9

1:28 pm-4:57 pm

1 stop3h 29m

Chicago O'Hare Intl

Sat 12/13

4:05 pm-7:50 pm

1 stop3h 45m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Sat 12/6

3:00 pm-9:40 pm

1 stop6h 40m

Chicago O'Hare Intl

Wed 12/10

11:00 am-5:19 pm

1 stop6h 19m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Wed 11/12

5:00 am-8:30 am

1 stop3h 30m

Chicago O'Hare Intl

Thu 11/27

6:00 am-10:19 am

1 stop4h 19m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Thu 12/11

1:28 pm-4:57 pm

1 stop3h 29m

Chicago O'Hare Intl

Sun 12/14

6:00 am-10:23 am

1 stop4h 23m

$229

FargoChicago

FAR - MDW

FARMDW

Fargo Hector Field

Wed 11/12

5:00 am-9:01 am

1 stop4h 01m

Chicago Midway

Tue 11/25

1:47 pm-7:40 pm

1 stop5h 53m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/18

Showing 1-10 of 60 results
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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.
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 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 $209). Flying from North Dakota to Illinois in May is currently the most expensive (average of $251). 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 October 21, 2025.

When flying from North Dakota to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 32% versus a flight in the morning.

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 October 21, 2025.

The most flights from USND to USIL are scheduled on a Monday (23 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (8 on average).

How much does it cost to fly round-trip from North Dakota to Illinois?

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 October 21, 2025.
Read through reviews of airlines operating flights from North Dakota to Illinois, such as Delta, United Airlines, and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,978 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,978 reviews
Delta
7.9
Good
7,978 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,991 reviews
Delta
7.9
Good
7,978 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,023 reviews
Delta
7.9
Good
7,978 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Frontier
5.8
Fair
3,130 reviews
Delta
7.9
Good
7,978 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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.

  • How long is the flight from North Dakota to Illinois?

    Departing from North Dakota to Illinois will take you 2h 12m. The distance between North Dakota and Illinois is about 556 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from North Dakota to Illinois one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $141. However, be on the lookout for offers from Delta and American Airlines, as they are both options that can get you from North Dakota to Illinois for a low price.

  • Can I find deals for flights from North Dakota to Illinois that include hotel bookings?

    Yes. In addition to deals on North Dakota to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from North Dakota to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from North Dakota to Illinois.

  • Can I find deals for business class flights from North Dakota to Illinois?

    Yes. Cheapflights offers flight deals from North Dakota 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 North Dakota to Illinois?

    Currently, August is the cheapest month in which you can book a flight from North Dakota to Illinois (average of $209). Flying from North Dakota to Illinois in May is currently the most expensive (average of $251). 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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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 October 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$209Average$337FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$209Average$355FlexibilityNo cancel feeOn-time71%
DeltaCheapest$218Average$428FlexibilityNo cancel feeOn-timeN/A

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