HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$134+ Cheap flights from Green Bay (GRB) 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — ORD
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This American Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 4/85:18 pm
GRB
-
ORD
Nonstop1h 31m
American Airlines
Fri 4/178:00 am
ORD
-
GRB
Nonstop1h 10m
American Airlines
Deal found 1/27$179
This United Airlines deal was found by Cheapflights users on 1/26. 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 4/295:35 pm
GRB
-
ORD
Nonstop1h 23m
United Airlines
Fri 5/88:05 pm
ORD
-
GRB
Nonstop1h 22m
United Airlines
Deal found 1/26$188
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Sat 2/146:32 pm
GRB
-
ORD
Nonstop1h 21m
American Airlines
Sat 2/218:03 pm
ORD
-
GRB
Nonstop1h 11m
American Airlines
Deal found 1/27$194
This Delta deal was found by Cheapflights users on 1/27. 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 2/2012:08 pm
GRB
-
ORD
1 stop5h 53m
Delta
Mon 3/98:55 am
ORD
-
GRB
1 stop6h 43m
Delta
Deal found 1/27$199
This American Airlines deal was found by Cheapflights users on 1/27. 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 2/136:01 am
GRB
-
ORD
Nonstop1h 24m
American Airlines
Mon 2/166:40 pm
ORD
-
GRB
Nonstop1h 02m
American Airlines
Deal found 1/27$209
This American Airlines deal was found by Cheapflights users on 1/28. 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.
Wed 2/114:53 pm
GRB
-
ORD
Nonstop1h 27m
American Airlines
Sat 2/1410:29 pm
ORD
-
GRB
Nonstop1h 03m
American Airlines
Deal found 1/28$211
This United Airlines deal was found by Cheapflights users on 1/27. 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 3/2710:34 am
GRB
-
ORD
Nonstop1h 26m
United Airlines
Sat 4/48:40 am
ORD
-
GRB
Nonstop1h 20m
United Airlines
Deal found 1/27$212
This Delta deal was found by Cheapflights users on 1/27. 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 2/147:00 am
GRB
-
ORD
1 stop6h 20m
Delta
Sat 2/212:05 pm
ORD
-
GRB
1 stop6h 36m
Delta
Deal found 1/27$214
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Sat 3/285:28 pm
GRB
-
ORD
Nonstop1h 22m
United Airlines
Sat 4/48:40 am
ORD
-
GRB
Nonstop1h 20m
United Airlines
Deal found 1/27$218
This Delta deal was found by Cheapflights users on 1/28. 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 2/117:00 am
GRB
-
MDW
1 stop5h 46m
Delta
Sat 2/145:00 pm
MDW
-
GRB
1 stop5h 01m
Delta
Deal found 1/28$229
This Delta deal was found by Cheapflights users on 1/27. 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 2/137:00 am
GRB
-
ORD
1 stop6h 20m
Delta
Mon 2/162:05 pm
ORD
-
GRB
1 stop6h 36m
Delta
Deal found 1/27$229
This American Airlines deal was found by Cheapflights users on 1/28. 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 3/125:00 am
GRB
-
ORD
Nonstop1h 24m
American Airlines
Sun 3/158:54 am
ORD
-
GRB
Nonstop1h 06m
American Airlines
Deal found 1/28$234

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$179
(American Airlines)

One-way from

$134
(United Airlines)

Popular in

August

Cheapest in

November

Average price

$559

Good round-trip deal

$345 or less

Good one-way deal

$259 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
One-way flight from Green Bay Austin-Straubel to Illinois
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 29, 2026.
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 2/20

6:32 pm-7:53 pm

Nonstop1h 21m

Chicago O'Hare Intl

Mon 3/9

6:40 pm-7:42 pm

Nonstop1h 02m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Thu 4/16

8:00 am-9:23 am

Nonstop1h 23m

Chicago O'Hare Intl

Sat 4/18

8:40 am-10:00 am

Nonstop1h 20m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Wed 4/8

5:18 pm-6:49 pm

Nonstop1h 31m

Chicago O'Hare Intl

Fri 4/17

8:00 am-9:10 am

Nonstop1h 10m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Thu 4/9

9:46 am-11:05 am

Nonstop1h 19m

Chicago O'Hare Intl

Wed 4/15

8:00 am-9:10 am

Nonstop1h 10m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Wed 4/29

5:35 pm-6:58 pm

Nonstop1h 23m

Chicago O'Hare Intl

Fri 5/8

8:05 pm-9:27 pm

Nonstop1h 22m

$188

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Thu 3/12

12:00 pm-6:00 pm

1 stop6h 00m

Chicago O'Hare Intl

Sun 3/15

7:10 am-10:27 am

1 stop3h 17m

$199

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Fri 2/20

12:08 pm-6:01 pm

1 stop5h 53m

Chicago O'Hare Intl

Mon 3/9

8:55 am-3:38 pm

1 stop6h 43m

$199

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Thu 4/16

4:22 pm-7:48 pm

1 stop3h 26m

Chicago O'Hare Intl

Sat 4/18

7:00 am-10:29 am

1 stop3h 29m

$199

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

Fri 2/13

6:01 am-7:25 am

Nonstop1h 24m

Chicago O'Hare Intl

Mon 2/16

6:40 pm-7:42 pm

Nonstop1h 02m

$209

Green BayChicago

GRB - MDW

GRBMDW

Green Bay Austin-Straubel

Thu 2/12

6:15 am-1:05 pm

1 stop6h 50m

Chicago Midway

Mon 2/16

1:26 pm-4:44 pm

1 stop3h 18m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 33 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, February is the cheapest month in which you can book a flight from Green Bay to Illinois (average of $88). 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 January 29, 2026.

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 30% 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 January 24, 2026.

Travelers seeking maximum savings on their Green Bay to Illinois flight should consider departing on Thursday evenings 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 January 29, 2026.

The most flights from GRB to USIL are scheduled on a Monday (19 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 January 29, 2026.
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
9,215 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,215 reviews
United Airlines
7.4
Good
9,215 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,205 reviews
United Airlines
7.4
Good
9,215 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 $179, American Airlines can have you in Illinois from Green Bay in 1h 21m. 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: Republic Airways (91%), Iberia (75%), Copa Airlines( 71%).

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

    Looking at all options, your cheapest flight can be booked for $184. While the most popular route (Green Bay Austin-Straubel - Chicago O'Hare Intl) can be booked for $188 on average, our data indicates $972 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, February is the cheapest month in which you can book a flight from Green Bay to Illinois (average of $88). 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 Sky Harbor Intl flights
O'Hare Intl to Las Vegas flights
Minneapolis to Sky Harbor Intl flights
O'Hare Intl to Dallas/Fort Worth flights
Minneapolis to Orlando flights
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to Los Angeles flights
Minneapolis to Las Vegas flights
Minneapolis to Fort Myers flights
O'Hare Intl to Miami flights
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to Orlando flights
O'Hare Intl to Denver flights
O'Hare Intl to San Francisco flights
O'Hare Intl to Tampa flights
Minneapolis to Tampa flights
Minneapolis to Miami flights
O'Hare Intl to LaGuardia flights
O'Hare Intl to Fort Myers flights
O'Hare Intl to Newark flights
Minneapolis to Fort Lauderdale flights
Minneapolis to Dallas/Fort Worth flights
O'Hare Intl to Seattle flights
O'Hare Intl to Santa Ana flights
Minneapolis to San Diego flights
O'Hare Intl to Atlanta flights
O'Hare Intl to West Palm Beach flights
Minneapolis to Denver flights
O'Hare Intl to Sarasota flights
O'Hare Intl to San Diego flights
Minneapolis to John F Kennedy Intl flights
O'Hare Intl to Reagan-National flights
O'Hare Intl to Austin flights
Minneapolis to Los Angeles flights
O'Hare Intl to New Orleans flights
Milwaukee to Las Vegas flights
Minneapolis to Seattle flights
O'Hare Intl to Hobby flights
O'Hare Intl to Salt Lake City flights
O'Hare Intl to Nashville flights
O'Hare Intl to Baltimore flights
O'Hare Intl to Ontario flights
Minneapolis to LaGuardia flights
O'Hare Intl to Dulles Intl flights
O'Hare Intl to Boston flights
O'Hare Intl to George Bush Intcntl flights
Milwaukee to Sky Harbor Intl flights
Minneapolis to Phoenix-Mesa Gateway flights
O'Hare Intl to Honolulu flights
Minneapolis to Atlanta 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$269FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$184Average$242FlexibilityNo cancel feeOn-time71%

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.