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$113+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
FAR — ORD
Feb 6 — Feb 131
Fri 2/6
Fri 2/13
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 January 7, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$144
(Frontier)

One-way from

$113
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$229

Good round-trip deal

$391 or less

Good one-way deal

$294 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. 7% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 7, 2026.

This Frontier deal was found by Cheapflights users on 1/5. 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.
Thu 1/224:11 pmFAR - STL
1 stop26h 33mFrontier
Wed 1/283:46 pmSTL - FAR
1 stop23h 30mFrontier
Deal found 1/5$144
This American Airlines deal was found by Cheapflights users on 1/7. 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.
Mon 2/235:15 amFAR - ORD
Nonstop2h 07mAmerican Airlines
Sat 2/284:45 pmORD - FAR
Nonstop2h 05mAmerican Airlines
Deal found 1/7$209
This American Airlines deal was found by Cheapflights users on 1/7. 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.
Thu 1/296:06 pmFAR - ORD
Nonstop2h 13mAmerican Airlines
Mon 2/29:40 amORD - FAR
Nonstop2h 13mAmerican Airlines
Deal found 1/7$210
This United Airlines deal was found by Cheapflights users on 1/6. 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.
Fri 2/67:15 amFAR - ORD
Nonstop2h 24mUnited Airlines
Sun 2/88:45 amORD - FAR
Nonstop2h 28mUnited Airlines
Deal found 1/6$217
This Delta deal was found by Cheapflights users on 1/7. 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.
Fri 2/135:00 amFAR - ORD
1 stop3h 40mDelta
Sun 2/156:51 pmORD - FAR
1 stop5h 06mDelta
Deal found 1/7$229
This Delta deal was found by Cheapflights users on 1/6. 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.
Thu 3/265:05 amFAR - MDW
1 stop3h 45mDelta
Mon 3/307:20 pmMDW - FAR
1 stop3h 51mDelta
Deal found 1/6$229
This Delta deal was found by Cheapflights users on 1/6. 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.
Thu 3/265:05 amFAR - ORD
2 stops8h 12mDelta
Wed 4/17:00 pmORD - FAR
1 stop4h 11mDelta
Deal found 1/6$234
This Delta deal was found by Cheapflights users on 1/6. 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.
Thu 3/267:15 amFAR - MDW
2 stops5h 14mDelta
Tue 3/317:20 pmMDW - FAR
1 stop3h 51mDelta
Deal found 1/6$234
This American Airlines deal was found by Cheapflights users on 1/7. 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 1/306:06 pmFAR - ORD
Nonstop2h 13mAmerican Airlines
Sun 2/16:54 amORD - FAR
1 stop6h 55mAmerican Airlines
Deal found 1/7$239
This American Airlines deal was found by Cheapflights users on 1/6. 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 3/31:22 pmFAR - ORD
1 stop9h 09mAmerican Airlines
Fri 4/34:54 pmORD - FAR
Nonstop2h 05mAmerican Airlines
Deal found 1/6$242
This American Airlines deal was found by Cheapflights users on 1/5. 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 4/2512:43 pmBIS - ORD
Nonstop2h 23mAmerican Airlines
Mon 4/279:45 amORD - BIS
Nonstop2h 28mAmerican Airlines
Deal found 1/5$247
This American Airlines deal was found by Cheapflights users on 1/7. 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.
Thu 1/226:06 pmFAR - ORD
Nonstop2h 13mAmerican Airlines
Mon 1/263:27 pmORD - FAR
Nonstop2h 09mAmerican Airlines
Deal found 1/7$249

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 January 7, 2026.
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

FargoSt. Louis

FAR - STL

FARSTL

Fargo Hector Field

Thu 1/22

4:11 pm-6:44 pm

1 stop26h 33m

Lambert-St Louis

Wed 1/28

3:46 pm-3:16 pm

1 stop23h 30m

$144

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Thu 1/29

11:08 am-5:55 pm

1 stop6h 47m

Chicago O'Hare Intl

Sun 2/1

6:15 am-10:28 am

1 stop4h 13m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Fri 4/24

5:05 am-8:38 am

1 stop3h 33m

Chicago O'Hare Intl

Sun 4/26

6:59 pm-11:07 pm

1 stop4h 08m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Thu 2/12

5:00 am-8:40 am

1 stop3h 40m

Chicago O'Hare Intl

Sun 2/15

6:51 pm-11:57 pm

1 stop5h 06m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Mon 2/2

5:25 pm-9:30 pm

1 stop4h 05m

Chicago O'Hare Intl

Mon 2/9

6:15 am-10:28 am

1 stop4h 13m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Fri 2/13

5:00 am-8:40 am

1 stop3h 40m

Chicago O'Hare Intl

Tue 2/17

6:15 am-10:18 am

1 stop4h 03m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Fri 1/30

1:14 pm-5:55 pm

1 stop4h 41m

Chicago O'Hare Intl

Sun 2/1

6:15 am-10:28 am

1 stop4h 13m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Thu 2/12

5:00 am-8:40 am

1 stop3h 40m

Chicago O'Hare Intl

Tue 2/17

6:15 am-10:18 am

1 stop4h 03m

$229

FargoChicago

FAR - ORD

FARORD

Fargo Hector Field

Fri 2/13

5:00 am-8:40 am

1 stop3h 40m

Chicago O'Hare Intl

Sun 2/15

6:51 pm-11:57 pm

1 stop5h 06m

$229

FargoChicago

FAR - MDW

FARMDW

Fargo Hector Field

Mon 2/2

1:19 pm-6:36 pm

1 stop5h 17m

Chicago Midway

Mon 2/9

7:16 pm-11:54 pm

1 stop4h 38m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

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, January 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 January 7, 2026.

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 21% versus a flight at noon.

What is the cheapest day to fly from North Dakota to Illinois?

Use this chart to determine the cheapest time to fly round-trip from North Dakota to Illinois. Price data was last updated on January 3, 2026.

Travelers seeking maximum savings on their North Dakota to Illinois flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 January 7, 2026.

The most flights from USND to USIL are scheduled on a Wednesday (19 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (14 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 January 7, 2026.
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
8,021 reviews

Comfort

7.9

Overall

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,021 reviews
Delta
7.9
Good
8,021 reviews

Comfort

7.9

Overall

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,138 reviews
Delta
7.9
Good
8,021 reviews

Comfort

7.9

Overall

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,088 reviews
Delta
7.9
Good
8,021 reviews

Comfort

7.9

Overall

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.7
Fair
3,063 reviews
Delta
7.9
Good
8,021 reviews

Comfort

7.9

Overall

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 23m. The distance between North Dakota and Illinois is about 714 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 Delta, with whom users have recently found tickets for as low as $99. However, be on the lookout for offers from American Airlines and United 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, January 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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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 January 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$198Average$401FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$209Average$347FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$209Average$333FlexibilityNo cancel feeOn-time71%

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