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Illinois

$85+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
FAR — ORD
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
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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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$197
(Mytrip)

One-way from

$85
(Frontier)

Popular in

June

Cheapest in

January

Average price

$326

Good round-trip deal

$329 or less

Good one-way deal

$175 or less
Provider with most accurate pricing for Fargo Hector Field-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Fargo Hector Field-Chicago (CHI) flights.
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From North Dakota to Illinois
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One-way flight from North Dakota to Illinois
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Highest demand for flights based on searches. 3% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from North Dakota to Illinois.
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Price to beat on a one-way flight from North Dakota to Illinois.
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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 March 31, 2025.

This Mytrip deal was found by Cheapflights users on 3/30. 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.
Fri 4/117:44 pmFAR - ORD
1 stop17h 33mFrontier
Sun 4/136:45 amORD - FAR
1 stop6h 42mFrontier
Deal found 3/30$197
This American Airlines deal was found by Cheapflights users on 3/30. 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 4/263:49 pmFAR - STL
1 stop6h 23mAmerican Airlines
Tue 4/297:04 amSTL - FAR
1 stop5h 36mAmerican Airlines
Deal found 3/30$199
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/2512:23 pmFAR - ORD
Nonstop1h 53mAmerican Airlines
Sun 4/271:22 pmORD - FAR
Nonstop1h 57mAmerican Airlines
Deal found 3/29$209
This Frontier deal was found by Cheapflights users on 3/29. 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.
Wed 4/25:41 pmFAR - MDW
1 stop6h 40mFrontier
Sun 4/66:45 amMDW - FAR
1 stop12h 09mFrontier
Deal found 3/29$228
This Delta deal was found by Cheapflights users on 3/30. 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 6/215:00 amFAR - MDW
1 stop3h 43mDelta
Fri 7/47:25 pmMDW - FAR
1 stop3h 34mDelta
Deal found 3/30$229
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/246:20 pmFAR - ORD
Nonstop2h 05mUnited Airlines
Mon 4/287:50 pmORD - FAR
Nonstop2h 09mUnited Airlines
Deal found 3/31$230
This Delta deal was found by Cheapflights users on 3/29. 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 5/105:31 pmFAR - STL
1 stop5h 55mDelta
Mon 5/126:05 pmSTL - FAR
1 stop5h 43mDelta
Deal found 3/29$232
This Delta deal was found by Cheapflights users on 3/30. 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 6/105:00 amBIS - STL
1 stop5h 34mDelta
Tue 6/1711:29 amSTL - BIS
1 stop5h 22mDelta
Deal found 3/30$233
This Delta deal was found by Cheapflights users on 3/30. 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.
Wed 5/285:00 amFAR - ORD
2 stops9h 47mDelta
Tue 6/36:24 amORD - FAR
1 stop5h 53mDelta
Deal found 3/30$234
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Wed 9/2412:39 pmBIS - ORD
Nonstop2h 14mAmerican Airlines
Thu 10/910:20 amORD - BIS
Nonstop2h 20mAmerican Airlines
Deal found 3/30$239
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Tue 6/103:00 pmBIS - STL
1 stop8h 00mAmerican Airlines
Tue 6/176:00 amSTL - BIS
1 stop6h 59mAmerican Airlines
Deal found 3/31$254
This Delta deal was found by Cheapflights users on 3/30. 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.
Wed 6/1812:31 pmMOT - ORD
1 stop6h 49mDelta
Tue 7/12:00 pmORD - MOT
2 stops9h 36mDelta
Deal found 3/30$264

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 March 31, 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 4/11

7:44 pm-1:17 pm

1 stop17h 33m

Chicago O'Hare Intl

Sun 4/13

6:45 am-1:27 pm

1 stop6h 42m

$197

FargoSt. Louis

FAR - STL

FARSTL

Fargo Hector Field

Sat 4/26

3:49 pm-10:12 pm

1 stop6h 23m

Lambert-St Louis

Tue 4/29

7:04 am-12:40 pm

1 stop5h 36m

$199

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Fri 4/25

3:49 pm-5:42 pm

Nonstop1h 53m

Chicago O'Hare Intl

Sun 4/27

1:22 pm-3:19 pm

Nonstop1h 57m

$209

FargoChicago

FAR - MDW

FARMDW

Fargo Hector Field

Sat 6/21

5:00 am-8:43 am

1 stop3h 43m

Chicago Midway

Fri 7/4

7:25 pm-10:59 pm

1 stop3h 34m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Thu 4/24

6:20 pm-8:25 pm

Nonstop2h 05m

Chicago O'Hare Intl

Mon 4/28

7:50 pm-9:59 pm

Nonstop2h 09m

$230

FargoSt. Louis

FAR - STL

FARSTL

Fargo Hector Field

Sat 5/10

5:31 pm-11:26 pm

1 stop5h 55m

Lambert-St Louis

Mon 5/12

6:05 pm-11:48 pm

1 stop5h 43m

$232

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

Tue 6/10

5:00 am-10:34 am

1 stop5h 34m

Lambert-St Louis

Tue 6/17

11:29 am-4:51 pm

1 stop5h 22m

$233

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Wed 5/28

5:00 am-2:47 pm

2 stops9h 47m

Chicago O'Hare Intl

Tue 6/3

6:24 am-12:17 pm

1 stop5h 53m

$234

BismarckChicago

BIS - ORD

BISORD

Bismarck

Wed 9/24

12:39 pm-2:53 pm

Nonstop2h 14m

Chicago O'Hare Intl

Thu 10/9

10:20 am-12:40 pm

Nonstop2h 20m

$239

BismarckSt. Louis

BIS - STL

BISSTL

Bismarck

Tue 6/10

3:00 pm-11:00 pm

1 stop8h 00m

Lambert-St Louis

Tue 6/17

6:00 am-12:59 pm

1 stop6h 59m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 34 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 $245). Flying from North Dakota to Illinois in March is currently the most expensive (average of $323). 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 March 31, 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 March 31, 2025.

The most flights from USND to USIL are scheduled on a Monday (21 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 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 March 31, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and American Airlines 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.
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,614 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Frontier
6.0
Okay
3,276 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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 $85. 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 $245). Flying from North Dakota to Illinois in March is currently the most expensive (average of $323). 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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Alternative routes for North Dakota to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$226Average$376FlexibilityNo cancel feeOn-time69%
DeltaCheapest$233Average$461FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$259Average$365FlexibilityNo cancel feeOn-time71%
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