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$308+ Cheap flights from Grand Forks (GFK) 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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
GFK — ORD
Feb 6 — Feb 131
Fri 2/6
Fri 2/13
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 January 7, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$337
(Delta)

One-way from

$308
(Delta)
Provider with most accurate pricing for Grand Forks-Chicago (CHI) flight deals.
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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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One-way flight 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 January 7, 2026.

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.
Wed 5/277:15 pmGFK - STL
1 stop3h 46mDelta
Sat 5/306:30 amSTL - GFK
1 stop3h 40mDelta
Deal found 1/7$337
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/3012:19 pmGFK - STL
2 stops8h 18mDelta
Mon 2/26:10 amSTL - GFK
1 stop5h 29mDelta
Deal found 1/5$344
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.
Fri 3/204:30 pmGFK - ORD
1 stop5h 04mDelta
Wed 3/256:00 amORD - GFK
1 stop5h 30mDelta
Deal found 1/6$355
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 2/612:24 pmGFK - MDW
1 stop6h 12mDelta
Thu 2/129:50 amMDW - GFK
1 stop5h 41mDelta
Deal found 1/7$355
This Delta deal was found by Cheapflights users on 1/4. 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 2/2012:18 pmGFK - MDW
1 stop6h 22mDelta
Sun 2/227:20 pmMDW - GFK
1 stop3h 50mDelta
Deal found 1/4$397
This Delta deal was found by Cheapflights users on 1/4. 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 2/2012:18 pmGFK - ORD
2 stops8h 26mDelta
Sun 2/228:50 amORD - GFK
1 stop6h 41mDelta
Deal found 1/4$402
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.
Wed 1/145:00 amGFK - ORD
1 stop3h 40mDelta
Sat 1/176:45 pmORD - GFK
1 stop4h 48mDelta
Deal found 1/6$417
This Delta deal was found by Cheapflights users on 1/4. 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 6/305:15 amGFK - STL
2 stops8h 02mDelta
Tue 7/78:50 amSTL - GFK
1 stop5h 30mDelta
Deal found 1/4$421
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.
Wed 1/2112:19 pmGFK - ORD
1 stop5h 36mDelta
Sun 1/256:15 amORD - GFK
1 stop5h 24mDelta
Deal found 1/6$432
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 1/225:00 amGFK - ORD
1 stop3h 40mDelta
Sun 1/258:50 amORD - GFK
1 stop6h 32mDelta
Deal found 1/6$447
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 1/2212:19 pmGFK - MDW
1 stop6h 17mDelta
Sun 1/257:16 pmMDW - GFK
1 stop4h 17mDelta
Deal found 1/6$447
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2012:19 pmGFK - MDW
1 stop6h 17mDelta
Sat 1/245:00 pmMDW - GFK
1 stop6h 33mDelta
Deal found 1/5$478

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 January 7, 2026.
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

Wed 5/27

7:15 pm-11:01 pm

1 stop3h 46m

Lambert-St Louis

Sat 5/30

6:30 am-10:10 am

1 stop3h 40m

$337

Grand ForksSt. Louis

GFK - STL

GFKSTL

Grand Forks

Tue 6/30

7:15 pm-11:01 pm

1 stop3h 46m

Lambert-St Louis

Tue 7/7

8:50 am-2:20 pm

1 stop5h 30m

$339

Grand ForksSt. Louis

GFK - STL

GFKSTL

Grand Forks

Fri 1/30

12:19 pm-8:37 pm

2 stops8h 18m

Lambert-St Louis

Mon 2/2

6:10 am-11:39 am

1 stop5h 29m

$344

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Fri 2/20

4:16 pm-9:30 pm

1 stop5h 14m

Chicago O'Hare Intl

Sun 2/22

8:50 am-3:31 pm

1 stop6h 41m

$355

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Fri 3/20

4:30 pm-9:34 pm

1 stop5h 04m

Chicago O'Hare Intl

Wed 3/25

6:00 am-11:30 am

1 stop5h 30m

$355

Grand ForksChicago

GFK - MDW

GFKMDW

Grand Forks

Fri 2/6

12:24 pm-6:36 pm

1 stop6h 12m

Chicago Midway

Thu 2/12

9:50 am-3:31 pm

1 stop5h 41m

$355

Grand ForksChicago

GFK - MDW

GFKMDW

Grand Forks

Fri 2/20

12:18 pm-6:40 pm

1 stop6h 22m

Chicago Midway

Sun 2/22

7:20 pm-11:10 pm

1 stop3h 50m

$397

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Tue 1/20

4:02 pm-9:43 pm

1 stop5h 41m

Chicago O'Hare Intl

Sat 1/24

8:50 am-3:22 pm

1 stop6h 32m

$417

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Wed 1/14

4:02 pm-9:43 pm

1 stop5h 41m

Chicago O'Hare Intl

Sat 1/17

1:55 pm-11:33 pm

2 stops9h 38m

$422

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Wed 1/21

12:19 pm-9:05 pm

2 stops8h 46m

Chicago O'Hare Intl

Sun 1/25

6:15 am-11:39 am

1 stop5h 24m

$437

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 15 results
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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, January 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 $256). 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.

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 46m. 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, January 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 $256). 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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