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$109+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — ORD
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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Cheap flight deals from Green Bay to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Green Bay (GRB) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 21, 2025.

Round-trip from

$217
(American Airlines)

One-way from

$109
(American Airlines)

Good round-trip deal

$374 or less

Good one-way deal

$229 or less
From Green Bay Austin-Straubel to Illinois
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One-way flight from Green Bay Austin-Straubel to Illinois
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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 21, 2025.

This American Airlines deal was found by Cheapflights users on 1/21. 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. 2/146:33 pmGRB - ORD
Nonstop1h 17mAmerican Airlines
lun. 2/178:50 pmORD - GRB
Nonstop1h 12mAmerican Airlines
Deal found 1/21$217
This Delta deal was found by Cheapflights users on 1/21. 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. 2/285:20 pmGRB - STL
1 stop4h 29mDelta
dom. 3/26:00 amSTL - GRB
1 stop5h 34mDelta
Deal found 1/21$229
This United Airlines deal was found by Cheapflights users on 1/21. 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.
jue. 5/156:30 amGRB - ORD
Nonstop1h 18mUnited Airlines
dom. 5/189:00 amORD - GRB
Nonstop1h 15mUnited Airlines
Deal found 1/21$252
This Delta deal was found by Cheapflights users on 1/21. 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. 2/144:17 pmGRB - ORD
1 stop5h 41mDelta
lun. 2/174:58 pmORD - GRB
1 stop3h 38mDelta
Deal found 1/21$253
This American Airlines deal was found by Cheapflights users on 1/21. 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.
jue. 1/3012:45 pmGRB - STL
2 stops11h 01mAmerican Airlines
lun. 2/312:00 pmSTL - GRB
1 stop4h 10mAmerican Airlines
Deal found 1/21$284
This Delta deal was found by Cheapflights users on 1/20. 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.
mié. 2/56:18 amGRB - MDW
1 stop6h 24mDelta
dom. 2/95:05 pmMDW - GRB
1 stop4h 20mDelta
Deal found 1/20$397

Find flights from Green Bay to Illinois within your budget

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 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

vie. 2/14

6:33 pm-7:50 pm

Nonstop1h 17m

Chicago O'Hare Intl

lun. 2/17

8:50 pm-10:02 pm

Nonstop1h 12m

$217

Green BaySt. Louis

GRB - STL

GRBSTL

Green Bay Austin-Straubel

vie. 2/28

5:20 pm-9:49 pm

1 stop4h 29m

Lambert-St Louis

dom. 3/2

6:00 am-11:34 am

1 stop5h 34m

$229

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

jue. 5/15

6:30 am-7:48 am

Nonstop1h 18m

Chicago O'Hare Intl

dom. 5/18

9:00 am-10:15 am

Nonstop1h 15m

$252

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

vie. 2/14

4:17 pm-9:58 pm

1 stop5h 41m

Chicago O'Hare Intl

lun. 2/17

4:58 pm-8:36 pm

1 stop3h 38m

$253

Green BaySt. Louis

GRB - STL

GRBSTL

Green Bay Austin-Straubel

lun. 2/10

6:00 pm-11:23 am

1 stop17h 23m

Lambert-St Louis

jue. 2/13

5:45 am-10:02 pm

1 stop16h 17m

$359

Green BayChicago

GRB - MDW

GRBMDW

Green Bay Austin-Straubel

mié. 2/5

6:18 am-12:42 pm

1 stop6h 24m

Chicago Midway

dom. 2/9

5:05 pm-9:25 pm

1 stop4h 20m

$397

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

vie. 2/21

6:33 pm-7:50 pm

Nonstop1h 17m

$109

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

mar. 2/18

5:20 pm-8:53 pm

1 stop3h 33m

$119

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

mar. 2/18

5:20 pm-6:33 pm

Nonstop1h 13m

$139

Green BayChicago

GRB - MDW

GRBMDW

Green Bay Austin-Straubel

sáb. 2/22

12:00 pm-4:09 pm

1 stop4h 09m

$210

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 11 results
1
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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.

Travel insights for flights from Green Bay to Illinois

Get recent, data-driven insights about flights from Green Bay to Illinois including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Green Bay to Illinois (average of $245). Flying from Green Bay to Illinois in March is currently the most expensive (average of $320). 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 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Green Bay to Illinois as you normally would.

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 21, 2025.

The most flights from GRB to USIL are scheduled on a Monday (17 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (15 on average).

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 enero 21, 2025.
Read through reviews of airlines operating flights from Green Bay to Illinois, such as American Airlines and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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

United Airlines
7.4
Good
8,984 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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 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.

  • What are the cheapest airlines to fly from Green Bay to Illinois one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $109. Users have also found prices from $119 and $139 on Delta and United Airlines, respectively.

  • 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 (100%), Copa Airlines (77%), United Airlines( 76%).

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

    Looking at all options, your cheapest flight can be booked for $138. While the most popular route (Green Bay Austin-Straubel - Chicago O'Hare Intl) can be booked for $237 on average our data indicates $822 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, August is the cheapest month in which you can book a flight from Green Bay to Illinois (average of $245). Flying from Green Bay to Illinois in March is currently the most expensive (average of $320). 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

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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 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$189Average$285FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$226Average$306FlexibilityNo cancel feeOn-time69%
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