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$355+ Cheap flights from Grand Forks (GFK) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/21. Fares are subject to change and may not be available on all flights or dates of travel.
GFK — ORD
Dec 17 — Dec 241
Wed 12/17
Wed 12/24
1 adult, Economy
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Cheap flight deals from Grand Forks to Illinois

Keep the following information in mind while searching for Grand Forks to Illinois flight deals. Data was last updated November 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$355
(Delta)
Provider with most accurate pricing for Grand Forks-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Grand Forks-Chicago (CHI) flights.
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From Grand Forks to Illinois
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Find flight deals from Grand Forks to Illinois

Cheapest flights from Grand Forks to Illinois
Explore the most affordable flight options available from Grand Forks to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 17, 2025.

This Delta deal was found by Cheapflights users on 11/16. 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.
Mon 12/14:30 pmGFK - ORD
1 stop5h 06mDelta
Fri 12/56:00 amORD - GFK
1 stop5h 44mDelta
Deal found 11/16$823
This Delta deal was found by Cheapflights users on 11/16. 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.
Mon 12/112:19 pmGFK - MDW
1 stop5h 59mDelta
Fri 12/59:59 amMDW - GFK
1 stop5h 58mDelta
Deal found 11/16$913
This Delta deal was found by Cheapflights users on 11/16. 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.
Tue 11/2512:19 pmGFK - ORD
1 stop4h 33mDelta
Sun 11/308:50 amORD - GFK
1 stop7h 00mDelta
Deal found 11/16$1,358

Cheapflights Fare Finder

 
Customize your flight search to find flights from Grand Forks 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 November 17, 2025.
Use the filters below to find and compare flights from Grand Forks to Illinois that are best for you.

Fly from

Grand Forks

Fly to

Illinois

Route

Depart

Return

Price

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Sat 3/21

4:05 pm-7:56 pm

1 stop3h 51m

Chicago O'Hare Intl

Wed 3/25

7:00 pm-11:12 pm

1 stop4h 12m

$355

Grand ForksSt. Louis

GFK - STL

GFKSTL

Grand Forks

Sat 4/4

4:05 pm-11:10 pm

1 stop7h 05m

Lambert-St Louis

Tue 4/7

8:50 am-3:46 pm

1 stop6h 56m

$377

Grand ForksChicago

GFK - MDW

GFKMDW

Grand Forks

Sat 5/2

12:15 pm-6:05 pm

1 stop5h 50m

Chicago Midway

Wed 5/6

9:20 am-3:41 pm

1 stop6h 21m

$386

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Mon 12/1

4:30 pm-9:36 pm

1 stop5h 06m

Chicago O'Hare Intl

Fri 12/5

6:00 am-11:44 am

1 stop5h 44m

$823

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Fri 3/6

5:00 am-8:40 am

1 stop3h 40m

Chicago O'Hare Intl

Sun 3/15

6:00 am-11:49 am

1 stop5h 49m

$849

Grand ForksChicago

GFK - MDW

GFKMDW

Grand Forks

Mon 12/1

12:19 pm-6:18 pm

1 stop5h 59m

Chicago Midway

Fri 12/5

9:59 am-3:57 pm

1 stop5h 58m

$913

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/14

Best time to book a flight from Grand Forks to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Grand Forks 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 Grand Forks to Illinois

What is the cheapest month to book a flight from Grand Forks to Illinois?

Currently, February is the cheapest month in which you can book a flight from Grand Forks to Illinois (average of $209). Flying from Grand Forks to Illinois in March is currently the most expensive (average of $267). 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.

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 November 17, 2025.
See what other customers who have flown with Delta from Grand Forks to Illinois have to say. 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
8,007 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

7.9

Boarding

8.1

Crew

8.5

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
8,007 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

7.9

Boarding

8.1

Crew

8.5

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 Grand Forks to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Grand Forks to Illinois?

    Located just 6.8 mi from the city center, Grand Forks (GFK) is the airport most travelers will use when flying to Illinois from Grand Forks.

  • How long is the flight from Grand Forks to Illinois?

    Delta can get you from Grand Forks to Illinois in just under 3h 51m. Your travel time can differ by up to . There are 612 mi between Grand Forks and Illinois.

  • What are the most popular routes from Grand Forks to Illinois?

    Most travelers choose Grand Forks - Chicago O'Hare Intl, Grand Forks - Chicago Midway or Grand Forks - Lambert-St Louis when deciding on the best route from Grand Forks to Illinois.

  • Can I find deals for flights from Grand Forks to Illinois that include hotel bookings?

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

  • How can I find direct flights from Grand Forks to Illinois?

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

  • Can I find deals for business class flights from Grand Forks to Illinois?

    Yes. Cheapflights offers flight deals from Grand Forks 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 Grand Forks to Illinois?

    Currently, February is the cheapest month in which you can book a flight from Grand Forks to Illinois (average of $209). Flying from Grand Forks to Illinois in March is currently the most expensive (average of $267). 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.

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Top airline flying from Grand Forks to Illinois

Discover the top airline that operate flights from Grand Forks 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 November 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$330Average$478FlexibilityNo cancel feeOn-timeN/A

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