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$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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — ORD
feb. 11 — feb. 181
mié. 2/11
mié. 2/18
1 adult, Economy
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Cheap 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 enero 12, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$179
(American Airlines)

Popular in

August

Cheapest in

November

Average price

$559

Good round-trip deal

$327 or less

Good one-way deal

$257 or less
Provider with most accurate pricing for Green Bay Austin-Straubel-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Green Bay Austin-Straubel-Chicago (CHI) flights.
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From Green Bay Austin-Straubel to Illinois
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Highest demand for flights based on searches. 21% potential increase in price ($89 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Green Bay Austin-Straubel to Illinois.
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Price to beat on a one-way flight from Green Bay Austin-Straubel to Illinois.
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Find 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 enero 12, 2026.

This American Airlines deal was found by Cheapflights users on 1/11. 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.
mié. 4/85:18 pm
GRB
-
ORD
Nonstop1h 31m
American Airlines
vie. 4/173:38 pm
ORD
-
GRB
Nonstop1h 10m
American Airlines
Deal found 1/11$179
This United Airlines deal was found by Cheapflights users on 1/12. 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.
sáb. 5/163:00 pm
GRB
-
ORD
Nonstop1h 23m
United Airlines
dom. 5/173:45 pm
ORD
-
GRB
Nonstop1h 13m
United Airlines
Deal found 1/12$191
This American Airlines deal was found by Cheapflights users on 1/11. 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.
mié. 1/284:53 pm
GRB
-
ORD
Nonstop1h 27m
American Airlines
vie. 2/69:40 am
ORD
-
GRB
Nonstop1h 10m
American Airlines
Deal found 1/11$194
This United Airlines deal was found by Cheapflights users on 1/11. 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.
vie. 1/302:39 pm
GRB
-
ORD
Nonstop1h 26m
United Airlines
sáb. 1/318:45 am
ORD
-
GRB
Nonstop1h 22m
United Airlines
Deal found 1/11$209
This Delta deal was found by Cheapflights users on 1/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/206:15 am
GRB
-
ORD
1 stop5h 30m
Delta
lun. 3/91:57 pm
ORD
-
GRB
1 stop6h 39m
Delta
Deal found 1/11$214
This American Airlines deal was found by Cheapflights users on 1/11. 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.
vie. 1/234:53 pm
GRB
-
ORD
Nonstop1h 27m
American Airlines
mar. 1/279:10 pm
ORD
-
GRB
Nonstop1h 04m
American Airlines
Deal found 1/11$224
This Delta deal was found by Cheapflights users on 1/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 1/3012:02 pm
GRB
-
MDW
1 stop6h 34m
Delta
sáb. 1/311:26 pm
MDW
-
GRB
1 stop3h 22m
Delta
Deal found 1/11$229
This Delta deal was found by Cheapflights users on 1/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 1/3012:02 pm
GRB
-
ORD
1 stop5h 53m
Delta
sáb. 1/3110:35 am
ORD
-
GRB
1 stop6h 13m
Delta
Deal found 1/11$229
This Delta deal was found by Cheapflights users on 1/12. 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.
vie. 1/3012:02 pm
GRB
-
MDW
1 stop6h 34m
Delta
sáb. 2/141:29 pm
MDW
-
GRB
1 stop3h 10m
Delta
Deal found 1/12$234
This Delta deal was found by Cheapflights users on 1/12. 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.
vie. 1/305:28 pm
GRB
-
ORD
1 stop3h 37m
Delta
sáb. 2/146:15 am
ORD
-
GRB
1 stop5h 09m
Delta
Deal found 1/12$234
This Delta deal was found by Cheapflights users on 1/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 1/2312:02 pm
GRB
-
MDW
1 stop6h 34m
Delta
mar. 1/271:29 pm
MDW
-
GRB
1 stop3h 10m
Delta
Deal found 1/11$244
This Delta deal was found by Cheapflights users on 1/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 1/235:28 pm
GRB
-
ORD
1 stop3h 37m
Delta
mar. 1/278:50 am
ORD
-
GRB
1 stop6h 48m
Delta
Deal found 1/11$244

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 enero 12, 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

mié. 4/8

5:18 pm-6:49 pm

Nonstop1h 31m

Chicago O'Hare Intl

vie. 4/17

3:38 pm-4:48 pm

Nonstop1h 10m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

mié. 5/6

5:30 pm-6:53 pm

Nonstop1h 23m

Chicago O'Hare Intl

dom. 5/10

8:45 am-10:05 am

Nonstop1h 20m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

sáb. 5/16

3:00 pm-4:23 pm

Nonstop1h 23m

Chicago O'Hare Intl

dom. 5/17

3:45 pm-4:58 pm

Nonstop1h 13m

$191

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

jue. 2/26

5:00 am-6:24 am

Nonstop1h 24m

Chicago O'Hare Intl

jue. 3/5

8:24 am-9:30 am

Nonstop1h 06m

$209

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

vie. 2/20

6:32 pm-7:53 pm

Nonstop1h 21m

Chicago O'Hare Intl

lun. 3/9

10:29 pm-11:32 pm

Nonstop1h 03m

$209

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

vie. 1/30

2:39 pm-4:05 pm

Nonstop1h 26m

Chicago O'Hare Intl

sáb. 1/31

8:45 am-10:07 am

Nonstop1h 22m

$209

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

vie. 1/30

4:53 pm-6:20 pm

Nonstop1h 27m

Chicago O'Hare Intl

sáb. 1/31

9:08 pm-10:12 pm

Nonstop1h 04m

$209

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

mar. 1/27

4:53 pm-6:20 pm

Nonstop1h 27m

Chicago O'Hare Intl

sáb. 1/31

3:15 pm-4:23 pm

Nonstop1h 08m

$209

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

vie. 2/20

6:15 am-11:45 am

1 stop5h 30m

Chicago O'Hare Intl

lun. 3/9

1:57 pm-8:36 pm

1 stop6h 39m

$214

Green BayChicago

GRB - MDW

GRBMDW

Green Bay Austin-Straubel

vie. 1/30

12:02 pm-6:36 pm

1 stop6h 34m

Chicago Midway

sáb. 1/31

1:26 pm-4:48 pm

1 stop3h 22m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/10

Showing 1-10 of 37 results
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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, March is the cheapest month in which you can book a flight from Green Bay to Illinois (average of $89). 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 enero 12, 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 31% 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 10, 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 enero 12, 2026.

The most flights from GRB to USIL are scheduled on a Monday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 on average).

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 enero 12, 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
9,149 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

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
9,149 reviews
United Airlines
7.4
Good
9,149 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

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
11,114 reviews
United Airlines
7.4
Good
9,149 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

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 23m. 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 - Chicago Midway or Green Bay Austin-Straubel - Lambert-St Louis.

  • 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 (78%), Copa Airlines (78%), Qatar Airways( 78%).

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

    Looking at all options, your cheapest flight can be booked for $130. While the most popular route (Green Bay Austin-Straubel - Chicago O'Hare Intl) can be booked for $179 on average, our data indicates $834 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, March is the cheapest month in which you can book a flight from Green Bay to Illinois (average of $89). 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.

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Alternative routes for Green Bay to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 enero 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$277FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$184Average$242FlexibilityNo cancel feeOn-time71%

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