HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$179+ Cheap flights from Green Bay (GRB) 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — ORD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Green Bay 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 Green Bay to Illinois

Cheapest flights from Green Bay to Illinois
Explore the most affordable flight options available from Green Bay to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:42 pmGRB - ORD
Nonstop1h 26mUnited Airlines
Wed 12/311:55 pmORD - GRB
Nonstop1h 12mUnited Airlines
Deal found 12/10$194
This American Airlines deal was found by Cheapflights users on 12/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amGRB - ORD
Nonstop1h 33mAmerican Airlines
Mon 12/298:20 amORD - GRB
Nonstop1h 19mAmerican Airlines
Deal found 12/9$209
This Delta deal was found by Cheapflights users on 12/10. 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 12/2411:11 amGRB - MDW
1 stop6h 15mDelta
Wed 12/315:59 pmMDW - GRB
1 stop4h 16mDelta
Deal found 12/10$286
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/263:42 pmGRB - ORD
Nonstop1h 26mUnited Airlines
Tue 12/308:20 pmORD - GRB
Nonstop1h 16mUnited Airlines
Deal found 12/11$309
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/263:42 pmGRB - STL
1 stop3h 36mUnited Airlines
Tue 12/309:55 amSTL - GRB
1 stop5h 12mUnited Airlines
Deal found 12/11$312
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/253:42 pmGRB - STL
1 stop3h 36mUnited Airlines
Mon 12/293:10 pmSTL - GRB
1 stop3h 52mUnited Airlines
Deal found 12/10$369
This Delta deal was found by Cheapflights users on 12/10. 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 12/244:29 pmGRB - ORD
1 stop5h 05mDelta
Wed 12/317:00 amORD - GRB
1 stop3h 31mDelta
Deal found 12/10$379
This Delta deal was found by Cheapflights users on 12/9. 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 12/2511:11 amGRB - ORD
1 stop6h 11mDelta
Mon 12/297:00 amORD - GRB
1 stop3h 31mDelta
Deal found 12/9$416
This American Airlines deal was found by Cheapflights users on 12/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:09 amGRB - STL
1 stop3h 27mAmerican Airlines
Tue 12/309:36 amSTL - GRB
2 stops12h 25mAmerican Airlines
Deal found 12/11$479
This American Airlines deal was found by Cheapflights users on 12/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:09 amGRB - STL
1 stop3h 27mAmerican Airlines
Mon 12/292:04 pmSTL - GRB
2 stops7h 57mAmerican Airlines
Deal found 12/11$494
This Delta deal was found by Cheapflights users on 12/9. 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 12/2511:11 amGRB - MDW
1 stop6h 15mDelta
Mon 12/299:29 amMDW - GRB
1 stop6h 10mDelta
Deal found 12/9$569
This American Airlines deal was found by Cheapflights users on 12/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/119:43 amGRB - ORD
Nonstop1h 23mAmerican Airlines
Fri 12/127:19 pmORD - GRB
Nonstop1h 10mAmerican Airlines
Deal found 12/11$619

Find flight deals from Green Bay to Illinois

Keep the following information in mind while searching for Green Bay to Illinois flight deals. Data was last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$179
(American Airlines)

Popular in

August

Cheapest in

November

Good round-trip deal

$303 or less

Good one-way deal

$273 or less
Provider with most accurate pricing for Green Bay Austin-Straubel-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Green Bay Austin-Straubel-Chicago (CHI) flights.
Search Deals
From Green Bay Austin-Straubel to Illinois
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($103 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Price to beat on a round-trip flight from Green Bay Austin-Straubel to Illinois.
Search Deals
Price to beat on a one-way flight from Green Bay Austin-Straubel to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Green Bay 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 December 12, 2025.
Use the filters below to find and compare flights from Green Bay to Illinois that are best for you.

Fly from

Green Bay

Fly to

Illinois

Route

Depart

Return

Price

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Fri 1/9

4:53 pm-6:20 pm

Nonstop1h 27m

Chicago O'Hare Intl

Fri 1/16

3:15 pm-4:23 pm

Nonstop1h 08m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Thu 2/5

11:20 am-12:40 pm

Nonstop1h 20m

Chicago O'Hare Intl

Mon 2/9

9:40 am-10:50 am

Nonstop1h 10m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Fri 1/30

11:20 am-12:40 pm

Nonstop1h 20m

Chicago O'Hare Intl

Mon 2/2

9:40 am-10:50 am

Nonstop1h 10m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Thu 1/8

4:53 pm-6:20 pm

Nonstop1h 27m

Chicago O'Hare Intl

Sun 1/11

9:40 am-10:50 am

Nonstop1h 10m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Wed 12/24

3:42 pm-5:08 pm

Nonstop1h 26m

Chicago O'Hare Intl

Wed 12/31

1:55 pm-3:07 pm

Nonstop1h 12m

$194

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Thu 1/8

5:28 pm-9:05 pm

1 stop3h 37m

Chicago O'Hare Intl

Sun 1/11

6:15 am-11:21 am

1 stop5h 06m

$199

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Fri 1/9

5:28 pm-9:05 pm

1 stop3h 37m

Chicago O'Hare Intl

Fri 1/16

6:15 am-11:21 am

1 stop5h 06m

$199

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Mon 2/23

9:58 am-11:18 am

Nonstop1h 20m

Chicago O'Hare Intl

Tue 3/10

10:29 pm-11:36 pm

Nonstop1h 07m

$208

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Fri 2/20

6:39 pm-8:05 pm

Nonstop1h 26m

Chicago O'Hare Intl

Mon 3/9

10:29 pm-11:36 pm

Nonstop1h 07m

$209

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Thu 12/25

7:00 am-8:33 am

Nonstop1h 33m

Chicago O'Hare Intl

Mon 12/29

8:20 am-9:39 am

Nonstop1h 19m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 39 results
1
2
3
4

Best time to book a flight from Green Bay to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Green Bay 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 Green Bay to Illinois

What is the cheapest month to book a flight from Green Bay to Illinois?

Currently, January is the cheapest month in which you can book a flight from Green Bay to Illinois (average of $74). Flying from Green Bay to Illinois in July is currently the most expensive (average of $179). 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.

What is the cheapest time of day to fly from GRB to IL?

Find hourly flight availability from Green Bay to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

One of the essential ways to save on airfare from Green Bay to Illinois is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 41% on airfare.

What is the cheapest day to fly from Green Bay to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Green Bay to Illinois. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Green Bay to Illinois flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Green Bay to Illinois

Explore weekly flight availability from Green Bay to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 12, 2025.

The most flights from GRB to USIL are scheduled on a Tuesday (21 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 on average).

How much does it cost to fly round-trip from Green Bay to Illinois?

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 December 12, 2025.
Read reviews from past customers who have flown United Airlines and American Airlines from Green Bay to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
American Airlines
7.2
Good
11,050 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

Find useful and relevant information for your journey from Green Bay 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 Green Bay to Illinois?

    Green Bay Austin-Straubel (GRB) is the airport you will fly out of if you book a flight from Green Bay to Illinois. It is only a 5.9 mi journey to Austin-Straubel (GRB) from Green Bay’s city center.

  • How long is the flight from Green Bay to Illinois?

    For as low as $194, American Airlines can have you in Illinois from Green Bay in 1h 26m. Green Bay and Illinois are separated by a distance of 173 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Green Bay to Illinois?

    The most popular route from Green Bay to Illinois is Green Bay Austin-Straubel - Chicago O'Hare Intl. You may also consider Green Bay Austin-Straubel - Lambert-St Louis or Green Bay Austin-Straubel - Chicago Midway.

  • What are the most reliable airlines from Green Bay to Illinois?

    Before booking your flight to Illinois from Green Bay, check out the most reliable airlines to get you to your destination on time: Qatar Airways (89%), Copa Airlines (85%), British Airways( 81%).

  • What are the cheapest flights from Green Bay to Illinois?

    Looking at all options, your cheapest flight can be booked for $179. While the most popular route (Green Bay Austin-Straubel - Chicago O'Hare Intl) can be booked for $179 on average, our data indicates $923 when flying from Green Bay to Illinois.

  • Can I find deals for flights from Green Bay to Illinois that include hotel bookings?

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

  • How can I find direct flights from Green Bay to Illinois?

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

  • Can I find deals for business class flights from Green Bay to Illinois?

    Yes. Cheapflights offers flight deals from Green Bay 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 Green Bay to Illinois?

    Currently, January is the cheapest month in which you can book a flight from Green Bay to Illinois (average of $74). Flying from Green Bay to Illinois in July is currently the most expensive (average of $179). 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.

Alternative routes for Green Bay to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
O'Hare Intl to Los Angeles flights
Minneapolis to Sky Harbor Intl flights
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to Dallas/Fort Worth flights
O'Hare Intl to Sky Harbor Intl flights
O'Hare Intl to Orlando flights
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to Miami flights
Minneapolis to Las Vegas flights
Minneapolis to Orlando flights
O'Hare Intl to Denver flights
O'Hare Intl to LaGuardia flights
Minneapolis to Miami flights
O'Hare Intl to Ontario flights
O'Hare Intl to Tampa flights
O'Hare Intl to Newark flights
O'Hare Intl to Atlanta flights
O'Hare Intl to Santa Ana flights
Minneapolis to Dallas/Fort Worth flights
O'Hare Intl to San Francisco flights
Minneapolis to Tampa flights
Minneapolis to Fort Lauderdale flights
Minneapolis to Fort Myers flights
Minneapolis to Los Angeles flights
O'Hare Intl to Fort Myers flights
O'Hare Intl to Seattle flights
Minneapolis to John F Kennedy Intl flights
O'Hare Intl to San Diego flights
O'Hare Intl to Honolulu flights
Minneapolis to LaGuardia flights
Minneapolis to San Diego flights
O'Hare Intl to Burbank flights
Minneapolis to Denver flights
Milwaukee to Orlando flights
O'Hare Intl to Salt Lake City flights
O'Hare Intl to New Orleans flights
Minneapolis to Hobby flights
O'Hare Intl to Love Field flights
O'Hare Intl to Baltimore flights
Minneapolis to Honolulu flights
O'Hare Intl to West Palm Beach flights
O'Hare Intl to Hobby flights
Milwaukee to Las Vegas flights
Minneapolis to Atlanta flights
O'Hare Intl to Palm Springs flights
O'Hare Intl to Boston flights
O'Hare Intl to Reagan-National flights
O'Hare Intl to Nashville flights
O'Hare Intl to Austin flights

Top 2 airlines flying from Green Bay to Illinois

Discover the top 2 airlines that operate flights from Green Bay 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$184Average$240FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$194Average$297FlexibilityNo cancel feeOn-time69%

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.