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$417+ 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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
GFK — ORD
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$417
(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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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 March 31, 2025.

This Delta deal was found by Cheapflights users on 3/31. 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 5/2812:14 pmGFK - STL
1 stop4h 46mDelta
Sat 5/316:00 amSTL - GFK
1 stop5h 34mDelta
Deal found 3/31$417
This Delta deal was found by Cheapflights users on 3/30. 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 4/1812:20 pmGFK - ORD
1 stop6h 39mDelta
Mon 4/218:50 amORD - GFK
1 stop26h 50mDelta
Deal found 3/30$532
This Delta deal was found by Cheapflights users on 3/30. 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 4/1812:20 pmGFK - MDW
1 stop4h 59mDelta
Mon 4/2110:20 amMDW - GFK
1 stop25h 20mDelta
Deal found 3/30$532

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 March 31, 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

Wed 5/28

12:14 pm-5:00 pm

1 stop4h 46m

Lambert-St Louis

Sat 5/31

6:00 am-11:34 am

1 stop5h 34m

$417

Grand ForksChicago

GFK - ORD

GFKORD

Grand Forks

Fri 4/18

12:20 pm-6:59 pm

1 stop6h 39m

Chicago O'Hare Intl

Mon 4/21

8:50 am-11:40 am

1 stop26h 50m

$532

Grand ForksChicago

GFK - MDW

GFKMDW

Grand Forks

Fri 4/18

12:20 pm-5:19 pm

1 stop4h 59m

Chicago Midway

Mon 4/21

10:20 am-11:40 am

1 stop25h 20m

$532

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

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 $323). 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.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 March 31, 2025.
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    Most travelers choose Grand Forks - Lambert-St Louis, Grand Forks - Chicago O'Hare Intl or Grand Forks - Chicago Midway 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 $323). 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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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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$428Average$478FlexibilityNo cancel feeOn-timeN/A
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