$131 Find Cheap Flights from Green Bay to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Green Bay to Illinois departing on 11/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Green Bay to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Green Bay to Illinois, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Green Bay to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicagononstop$179
St. Louis
St. Louis1 stop$229
Chicago
Chicagononstop$179
St. Louis
St. Louis1 stop$229

Book Cheap Green Bay to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Green Bay to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Green Bay to Illinois

Sat, Nov 8 - Wed, Nov 12
American Airlines Logo
3:31 pm - 4:51 pmGRB-ORD
1h 20mnonstop
American Airlines Logo
12:49 pm - 1:55 pmORD-GRB
1h 06mnonstop
$179American Airlines
Find Deal
Sun, Nov 2 - Wed, Nov 19
American Airlines Logo
3:09 pm - 4:29 pmGRB-ORD
1h 20mnonstop
American Airlines Logo
8:47 pm - 9:58 pmORD-GRB
1h 11mnonstop
$184American Airlines
Find Deal
Wed, Oct 29 - Sun, Nov 2
American Airlines Logo
9:44 am - 11:02 amGRB-ORD
1h 18mnonstop
American Airlines Logo
10:30 pm - 11:37 pmORD-GRB
1h 07mnonstop
$189American Airlines
Find Deal
Sat, Nov 8 - Wed, Nov 12
Delta Logo
7:00 am - 12:26 pmGRB-MDW
5h 26m1 stop
Delta Logo
9:41 am - 3:37 pmMDW-GRB
5h 56m1 stop
$199Delta
Find Deal
Sat, Nov 8 - Wed, Nov 12
Delta Logo
4:16 pm - 9:19 pmGRB-ORD
5h 03m1 stop
Delta Logo
6:45 am - 10:30 amORD-GRB
3h 45m1 stop
$199Delta
Find Deal
Sun, Nov 2 - Wed, Nov 19
Delta Logo
7:00 am - 12:40 pmGRB-ORD
5h 40m1 stop
Delta Logo
6:45 am - 10:30 amORD-GRB
3h 45m1 stop
$204Delta
Find Deal
Wed, Oct 29 - Sun, Nov 2
United Airlines Logo
6:15 am - 7:42 amGRB-ORD
1h 27mnonstop
United Airlines Logo
1:55 pm - 3:10 pmORD-GRB
1h 15mnonstop
$249United Airlines
Find Deal
Thu, Oct 30 - Mon, Nov 3
United Airlines Logo
8:00 am - 9:28 amGRB-ORD
1h 28mnonstop
United Airlines Logo
1:55 pm - 3:10 pmORD-GRB
1h 15mnonstop
$259United Airlines
Find Deal
Thu, Oct 30 - Mon, Nov 3
United Airlines Logo
8:00 am - 12:28 pmGRB-STL
4h 28m1 stop
United Airlines Logo
5:24 pm - 9:38 pmSTL-GRB
4h 14m1 stop
$373United Airlines
Find Deal
Wed, Oct 29 - Sat, Nov 1
United Airlines Logo
10:46 am - 2:25 pmGRB-STL
3h 39m1 stop
United Airlines Logo
4:43 pm - 1:33 pmSTL-GRB
20h 50m2 stops
$472United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Green Bay to Illinois flights

Get data-powered insights and trends into flights from Green Bay to Illinois to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Green Bay to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Green Bay found in the last 72 hours was to Chicago, at $255 round-trip. The most popular route is from Green Bay (GRB) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $255.

Can I save money by flying with a layover from Green Bay to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $229, prices are generally cheapest when you fly direct.

What’s the cheapest day of the week to fly from Green Bay to Illinois?

The average price of all round-trip flights from Green Bay to Illinois clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Illinois on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Green Bay to Illinois. For your return ticket, we recommend flying on a Tuesday and avoiding Sundays for the best deals.

Good to know

Low seasonJanuary
Cheapest flight$131
Best time to beat the crowds but there is an average 22% increase in price.
Most popular time to fly with an average 3% increase in price.
Flight from Green Bay to St. Louis

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Green Bay to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Green Bay to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Green Bay to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Green Bay to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Green Bay to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Green Bay to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Green Bay to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Green Bay to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the evening, when round-trip flights cost $470 on average. Morning departures are around 6% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally at night, which is peak travel time and where the average cost of a ticket is $717.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Green Bay to the following destinations at these prices or less: Chicago $257 one-way - $328 round-trip

Reviews of the top airlines flying from Green Bay to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Green Bay to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Green Bay to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8982 reviews
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
Airline reviews

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

6.0 GoodJerome, Oct 2025IAD - ORD
Read more United Airlines reviews

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

Salina to travers city was great! But the sept 24 Tranverse city was not! Traverse city to chichago was cancelled, i went to Denver & got to Salina 6 hours later!

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Overall it was good. I missed my connection but I was put on another flight.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

Excellent - explanations were clear staff was nice and flight was comfortable

Lost bag and 2 days no word leaving for cruise no clothes or stuff

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Food was ok, but not as good as I have had before on AA.

Pretty good. The food was just mediocre, the boarding and crew were good.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

Everything you need to know for your flight from Green Bay to Illinois

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.