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$387+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
GFK — ORD
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$387
(Delta)
From Grand Forks to Illinois
Search Deals

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 September 17, 2025.

This Delta deal was found by Cheapflights users on 9/17. 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.
Thu 12/44:40 pmGFK - STL
1 stop6h 48mDelta
Mon 12/86:00 amSTL - GFK
1 stop5h 44mDelta
Deal found 9/17$387
This Delta deal was found by Cheapflights users on 9/15. 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.
Fri 10/174:20 pmGFK - ORD
1 stop4h 59mDelta
Thu 10/236:08 amORD - GFK
1 stop5h 27mDelta
Deal found 9/15$407
This Delta deal was found by Cheapflights users on 9/15. 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.
Tue 9/305:03 amGFK - ORD
1 stop3h 22mDelta
Sat 10/46:15 amORD - GFK
1 stop5h 18mDelta
Deal found 9/15$427
This Delta deal was found by Cheapflights users on 9/15. 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.
Tue 9/3012:21 pmGFK - MDW
1 stop5h 14mDelta
Sat 10/47:15 pmMDW - GFK
1 stop3h 43mDelta
Deal found 9/15$427
This Delta deal was found by Cheapflights users on 9/14. 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 9/3012:21 pmGFK - STL
1 stop4h 24mDelta
Sat 10/46:00 amSTL - GFK
1 stop5h 33mDelta
Deal found 9/14$467
This Delta deal was found by Cheapflights users on 9/16. 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 10/144:20 pmGFK - ORD
2 stops17h 36mDelta
Tue 10/216:08 amORD - GFK
1 stop5h 27mDelta
Deal found 9/16$491
This Delta deal was found by Cheapflights users on 9/15. 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.
Tue 9/235:03 amGFK - ORD
1 stop3h 22mDelta
Tue 10/76:08 amORD - GFK
1 stop5h 27mDelta
Deal found 9/15$492
This Delta deal was found by Cheapflights users on 9/15. 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.
Fri 10/1712:20 pmGFK - MDW
1 stop5h 23mDelta
Thu 10/239:20 amMDW - GFK
1 stop6h 20mDelta
Deal found 9/15$498
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/252:54 pmGFK - ORD
1 stop20h 57mMultiple Airlines
Fri 10/107:43 pmORD - GFK
2 stops42h 23mMultiple Airlines
Deal found 9/15$547
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/182:54 pmGFK - ORD
1 stop20h 57mMultiple Airlines
Sat 9/205:30 pmORD - GFK
2 stops20h 34mMultiple Airlines
Deal found 9/15$601
This Delta deal was found by Cheapflights users on 9/15. 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.
Thu 9/1812:21 pmGFK - ORD
1 stop4h 26mDelta
Sat 9/206:15 amORD - GFK
1 stop5h 18mDelta
Deal found 9/15$627
This Delta deal was found by Cheapflights users on 9/15. 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.
Thu 9/185:03 amGFK - MDW
1 stop3h 50mDelta
Sat 9/209:20 amMDW - GFK
1 stop6h 19mDelta
Deal found 9/15$627

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 September 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 ForksSt. Louis

GFK - STL

GFKSTL

Grand Forks

Thu 12/4

4:40 pm-11:28 pm

1 stop6h 48m

Lambert-St Louis

Mon 12/8

6:00 am-11:44 am

1 stop5h 44m

$387

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Fri 10/17

4:20 pm-9:19 pm

1 stop4h 59m

Chicago O'Hare Intl

Thu 10/23

6:08 am-11:35 am

1 stop5h 27m

$407

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Tue 9/30

5:03 am-8:25 am

1 stop3h 22m

Chicago O'Hare Intl

Sat 10/4

6:15 am-11:33 am

1 stop5h 18m

$427

Grand ForksChicago

GFK - MDW

GFKMDW

Grand Forks

Thu 10/2

12:21 pm-5:35 pm

1 stop5h 14m

Chicago Midway

Mon 10/6

9:20 am-3:40 pm

1 stop6h 20m

$427

Grand ForksChicago

GFK - MDW

GFKMDW

Grand Forks

Tue 9/30

12:21 pm-5:35 pm

1 stop5h 14m

Chicago Midway

Sat 10/4

7:15 pm-10:58 pm

1 stop3h 43m

$427

Grand ForksSt. Louis

GFK - STL

GFKSTL

Grand Forks

Thu 10/2

4:19 pm-11:09 pm

1 stop6h 50m

Lambert-St Louis

Mon 10/6

5:31 pm-10:47 pm

1 stop5h 16m

$467

Grand ForksSt. Louis

GFK - STL

GFKSTL

Grand Forks

Tue 9/30

12:21 pm-4:45 pm

1 stop4h 24m

Lambert-St Louis

Sat 10/4

6:00 am-11:33 am

1 stop5h 33m

$467

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Tue 10/14

4:20 pm-9:56 am

2 stops17h 36m

Chicago O'Hare Intl

Tue 10/21

6:08 am-11:35 am

1 stop5h 27m

$491

Grand ForksChicago

GFK - MDW

GFKMDW

Grand Forks

Fri 10/17

12:20 pm-5:43 pm

1 stop5h 23m

Chicago Midway

Thu 10/23

9:20 am-3:40 pm

1 stop6h 20m

$498

Grand ForksSt. Louis

GFK - STL

GFKSTL

Grand Forks

Wed 10/15

12:20 pm-4:46 pm

1 stop4h 26m

Lambert-St Louis

Thu 10/16

6:00 am-11:35 am

1 stop5h 35m

$647

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 15 results
1
2

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, August is the cheapest month in which you can book a flight from Grand Forks to Illinois (average of $245). Flying from Grand Forks 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.

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 September 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
8.0
Very good
7,961 reviews

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 6h 48m. Your travel time can differ by up to . There are 720 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, August is the cheapest month in which you can book a flight from Grand Forks to Illinois (average of $245). Flying from Grand Forks 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.

See more FAQs

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Alternative routes for Grand Forks to Illinois

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$330Average$478FlexibilityNo cancel feeOn-timeN/A

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