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$153+ 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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — ORD
nov. 28 — dic. 51
vie. 11/28
vie. 12/5
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 octubre 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$179
(United Airlines)

One-way from

$153
(Delta)

Popular in

August

Cheapest in

September

Good round-trip deal

$320 or less

Good one-way deal

$238 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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One-way flight from Green Bay Austin-Straubel to Illinois
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Highest demand for flights based on searches. 24% potential increase in price ($103 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($27 potential savings vs. average RT price).
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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 octubre 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/231:20 pmGRB - ORD
Nonstop1h 20mUnited Airlines
mar. 12/23:35 pmORD - GRB
Nonstop1h 10mUnited Airlines
Deal found 10/28$179
This American Airlines deal was found by Cheapflights users on 10/28. 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.
jue. 11/205:55 amGRB - ORD
Nonstop1h 20mAmerican Airlines
dom. 11/2310:20 pmORD - GRB
Nonstop1h 08mAmerican Airlines
Deal found 10/28$180
This Delta deal was found by Cheapflights users on 10/28. 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.
jue. 11/204:56 pmGRB - ORD
1 stop3h 33mDelta
dom. 11/236:45 amORD - GRB
1 stop3h 45mDelta
Deal found 10/28$199
This American Airlines deal was found by Cheapflights users on 10/27. 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.
jue. 11/63:09 pmGRB - ORD
Nonstop1h 20mAmerican Airlines
jue. 11/138:06 amORD - GRB
Nonstop1h 09mAmerican Airlines
Deal found 10/27$204
This Delta deal was found by Cheapflights users on 10/28. 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.
vie. 12/124:52 pmGRB - ORD
1 stop3h 43mDelta
vie. 12/198:50 amORD - GRB
1 stop6h 47mDelta
Deal found 10/28$219
This American Airlines deal was found by Cheapflights users on 10/28. 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.
sáb. 11/89:53 amGRB - ORD
Nonstop1h 18mAmerican Airlines
mié. 11/128:47 pmORD - GRB
Nonstop1h 11mAmerican Airlines
Deal found 10/28$224
This American Airlines deal was found by Cheapflights users on 10/28. 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.
jue. 12/48:02 pmGRB - STL
1 stop3h 36mAmerican Airlines
dom. 12/75:15 amSTL - GRB
1 stop3h 58mAmerican Airlines
Deal found 10/28$229
This Delta deal was found by Cheapflights users on 10/27. 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.
sáb. 11/87:00 amGRB - MDW
1 stop5h 26mDelta
mié. 11/129:41 amMDW - GRB
1 stop5h 56mDelta
Deal found 10/27$234
This Delta deal was found by Cheapflights users on 10/27. 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.
jue. 11/67:00 amGRB - ORD
1 stop5h 40mDelta
jue. 11/136:00 amORD - GRB
1 stop5h 33mDelta
Deal found 10/27$234
This Delta deal was found by Cheapflights users on 10/28. 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.
sáb. 11/812:02 pmGRB - ORD
1 stop4h 48mDelta
mié. 11/1211:03 amORD - GRB
1 stop4h 34mDelta
Deal found 10/28$244
This Delta deal was found by Cheapflights users on 10/29. 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.
sáb. 12/1312:13 pmGRB - MDW
1 stop6h 05mDelta
sáb. 12/209:29 amMDW - GRB
1 stop6h 20mDelta
Deal found 10/29$248
This American Airlines deal was found by Cheapflights users on 10/28. 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.
vie. 12/122:59 pmGRB - ORD
Nonstop1h 24mAmerican Airlines
vie. 12/198:20 amORD - GRB
Nonstop1h 19mAmerican Airlines
Deal found 10/28$258

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 octubre 29, 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

vie. 12/5

8:02 pm-9:30 pm

Nonstop1h 28m

Chicago O'Hare Intl

lun. 12/8

8:05 am-9:13 am

Nonstop1h 08m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

sáb. 1/3

5:22 pm-6:49 pm

Nonstop1h 27m

Chicago O'Hare Intl

mié. 1/7

12:50 pm-2:02 pm

Nonstop1h 12m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

dom. 11/23

5:55 am-7:15 am

Nonstop1h 20m

Chicago O'Hare Intl

mar. 12/2

10:20 pm-11:28 pm

Nonstop1h 08m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

dom. 11/23

1:20 pm-2:40 pm

Nonstop1h 20m

Chicago O'Hare Intl

mar. 12/2

3:35 pm-4:45 pm

Nonstop1h 10m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

jue. 2/5

3:42 pm-5:04 pm

Nonstop1h 22m

Chicago O'Hare Intl

lun. 2/9

8:45 am-10:07 am

Nonstop1h 22m

$179

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

jue. 11/20

5:55 am-7:15 am

Nonstop1h 20m

Chicago O'Hare Intl

dom. 11/23

10:20 pm-11:28 pm

Nonstop1h 08m

$180

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

jue. 11/20

4:56 pm-8:29 pm

1 stop3h 33m

Chicago O'Hare Intl

dom. 11/23

6:45 am-10:30 am

1 stop3h 45m

$199

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

dom. 11/23

7:00 am-1:55 pm

1 stop6h 55m

Chicago O'Hare Intl

mar. 12/2

6:45 am-10:31 am

1 stop3h 46m

$199

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

sáb. 11/8

7:17 am-8:46 am

Nonstop1h 29m

Chicago O'Hare Intl

mié. 11/12

9:15 am-10:30 am

Nonstop1h 15m

$204

Green BayChicago

GRB - ORD

GRBORD

Green Bay Austin-Straubel

vie. 12/12

4:52 pm-8:35 pm

1 stop3h 43m

Chicago O'Hare Intl

vie. 12/19

8:50 am-3:37 pm

1 stop6h 47m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 43 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, January is the cheapest month in which you can book a flight from Green Bay to Illinois (average of $75). 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 octubre 29, 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 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.

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 octubre 29, 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
8,999 reviews

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,999 reviews
United Airlines
7.4
Good
8,999 reviews

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
American Airlines
7.2
Good
11,032 reviews
United Airlines
7.4
Good
8,999 reviews

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 27m. Green Bay and Illinois are separated by a distance of 173 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $193. Users have also found prices from $204 and $228 on United Airlines and American 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 (93%), Qatar Airways (86%), Air New Zealand( 84%).

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

    Looking at all options, your cheapest flight can be booked for $198. While the most popular route (Green Bay Austin-Straubel - Chicago O'Hare Intl) can be booked for $179 on average, our data indicates $936 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 $75). 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

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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 octubre 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$184Average$252FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$209Average$309FlexibilityNo cancel feeOn-time69%

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