HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$319+ 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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
GFK — ORD
May 6 — May 131
Wed 5/6
Wed 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Grand Forks to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 April 6, 2026.

This Delta deal was found by Cheapflights users on 4/2. 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.
Sun 5/37:15 pm
GFK
-
STL
1 stop3h 58m
Delta
Sat 5/96:21 am
STL
-
GFK
1 stop3h 57m
Delta
Deal found 4/2$371
This Delta deal was found by Cheapflights users on 4/4. 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.
Mon 11/1610:45 am
GFK
-
ORD
1 stop6h 04m
Delta
Sun 11/226:00 am
ORD
-
GFK
1 stop4h 10m
Delta
Deal found 4/4$415
This Delta deal was found by Cheapflights users on 4/1. 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 4/296:40 am
GFK
-
ORD
2 stops6h 05m
Delta
Wed 5/66:25 am
ORD
-
GFK
1 stop3h 50m
Delta
Deal found 4/1$422
This Delta deal was found by Cheapflights users on 4/3. 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 4/185:15 am
GFK
-
ORD
1 stop6h 19m
Delta
Wed 4/226:25 am
ORD
-
GFK
1 stop3h 50m
Delta
Deal found 4/3$429
This Delta deal was found by Cheapflights users on 4/4. 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 5/17:15 pm
GFK
-
STL
1 stop3h 58m
Delta
Mon 5/46:20 am
STL
-
GFK
1 stop3h 55m
Delta
Deal found 4/4$432
This Delta deal was found by Cheapflights users on 4/3. 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 6/1210:50 am
GFK
-
ORD
1 stop6h 12m
Delta
Sun 6/146:30 am
ORD
-
GFK
1 stop3h 45m
Delta
Deal found 4/3$437
This Delta deal was found by Cheapflights users on 4/2. 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 6/1910:50 am
GFK
-
ORD
1 stop6h 12m
Delta
Mon 6/226:30 am
ORD
-
GFK
1 stop3h 45m
Delta
Deal found 4/2$443
This Delta deal was found by Cheapflights users on 4/1. 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 4/296:40 am
GFK
-
MDW
1 stop6h 52m
Delta
Wed 5/69:29 am
MDW
-
GFK
1 stop4h 56m
Delta
Deal found 4/1$443
This Delta deal was found by Cheapflights users on 4/3. 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 4/185:15 am
GFK
-
MDW
1 stop3h 51m
Delta
Wed 4/229:29 am
MDW
-
GFK
1 stop4h 56m
Delta
Deal found 4/3$444
This Delta deal was found by Cheapflights users on 4/4. 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.
Thu 10/157:55 pm
GFK
-
STL
1 stop3h 23m
Delta
Sat 10/175:30 pm
STL
-
GFK
1 stop5h 50m
Delta
Deal found 4/4$458
This Delta deal was found by Cheapflights users on 4/2. 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 4/145:15 am
GFK
-
ORD
2 stops7h 30m
Delta
Sat 4/186:25 am
ORD
-
GFK
1 stop3h 50m
Delta
Deal found 4/2$468
This Delta deal was found by Cheapflights users on 4/2. 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 4/145:15 am
GFK
-
MDW
2 stops7h 28m
Delta
Sat 4/182:12 pm
MDW
-
GFK
1 stop5h 12m
Delta
Deal found 4/2$468

Find 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 April 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$371
(Delta)

One-way from

$319
(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.
Search Deals
From Grand Forks to Illinois
Search Deals
One-way flight from Grand Forks to Illinois
Search Deals

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 April 6, 2026.
Use the filters below to find and compare flights from Grand Forks to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Grand ForksSt. Louis

GFK - STL

GFKSTL

Grand Forks

Sun 5/3

7:15 pm-11:13 pm

1 stop3h 58m

Lambert-St Louis

Sat 5/9

6:21 am-10:18 am

1 stop3h 57m

$371

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Sat 4/18

5:15 am-11:34 am

1 stop6h 19m

Chicago O'Hare Intl

Wed 4/22

6:25 am-10:15 am

1 stop3h 50m

$429
Quickest round-trip

Grand ForksSt. Louis

GFK - STL

GFKSTL

Grand Forks

Fri 5/1

7:15 pm-11:13 pm

1 stop3h 58m

Lambert-St Louis

Mon 5/4

6:20 am-10:15 am

1 stop3h 55m

$432

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Fri 6/12

10:50 am-5:02 pm

1 stop6h 12m

Chicago O'Hare Intl

Sun 6/14

6:30 am-10:15 am

1 stop3h 45m

$437

Grand ForksChicago

GFK - MDW

GFKMDW

Grand Forks

Sat 4/18

5:15 am-9:06 am

1 stop3h 51m

Chicago Midway

Wed 4/22

9:29 am-2:25 pm

1 stop4h 56m

$444

Grand ForksChicago

GFK - MDW

GFKMDW

Grand Forks

Wed 4/29

6:40 am-1:32 pm

1 stop6h 52m

Chicago Midway

Wed 5/6

9:27 am-6:08 pm

2 stops8h 41m

$448

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Wed 4/29

6:40 am-12:45 pm

2 stops6h 05m

Chicago O'Hare Intl

Wed 5/6

8:52 am-6:08 pm

2 stops9h 16m

$453

Grand ForksChicago

GFK - MDW

GFKMDW

Grand Forks

Thu 4/16

5:15 am-12:43 pm

2 stops7h 28m

Chicago Midway

Mon 4/20

7:16 pm-11:04 pm

1 stop3h 48m

$519

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Fri 5/1

5:15 am-12:45 pm

2 stops7h 30m

Chicago O'Hare Intl

Fri 5/8

6:24 am-10:18 am

1 stop3h 54m

$638

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Sat 5/16

10:53 am-4:51 pm

1 stop5h 58m

Chicago O'Hare Intl

Tue 5/26

6:24 am-10:18 am

1 stop3h 54m

$641

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 16 resultsSorted by cheapest first
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, 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 $250). 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 58m. 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 $250). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.