$179 Find Cheap Flights from Green Bay to Illinois

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Green Bay to Illinois departing on 4/8. 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, 0 bags

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
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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$274
Chicago
Chicagononstop$179
St. Louis
St. Louis1 stop$274

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

Wed, Apr 8 - Fri, Apr 17
American Airlines Logo
9:46 am - 11:05 am
GRB
-
ORD
1h 19mnonstop
American Airlines Logo
3:38 pm - 4:48 pm
ORD
-
GRB
1h 10mnonstop
$179American Airlines
Tue, Jan 20 - Sat, Jan 24
American Airlines Logo
6:00 am - 7:29 am
GRB
-
ORD
1h 29mnonstop
American Airlines Logo
3:15 pm - 4:23 pm
ORD
-
GRB
1h 08mnonstop
$194American Airlines
Sun, Mar 29 - Sat, Apr 4
Delta Logo
7:00 am - 12:29 pm
GRB
-
MDW
5h 29m1 stop
Delta Logo
9:30 am - 3:38 pm
MDW
-
GRB
6h 08m1 stop
$199Delta
Fri, Jan 30 - Fri, Feb 6
Delta Logo
12:02 pm - 5:55 pm
GRB
-
ORD
5h 53m1 stop
Delta Logo
6:15 am - 11:21 am
ORD
-
GRB
5h 06m1 stop
$199Delta
Fri, Jan 16 - Mon, Jan 19
American Airlines Logo
4:53 pm - 6:20 pm
GRB
-
ORD
1h 27mnonstop
American Airlines Logo
3:15 pm - 4:23 pm
ORD
-
GRB
1h 08mnonstop
$209American Airlines
Sun, Mar 29 - Sat, Apr 4
United Airlines Logo
3:00 pm - 4:23 pm
GRB
-
ORD
1h 23mnonstop
United Airlines Logo
6:00 pm - 7:13 pm
ORD
-
GRB
1h 13mnonstop
$210United Airlines
Mon, Feb 9 - Mon, Mar 9
Delta Logo
5:28 pm - 9:05 pm
GRB
-
ORD
3h 37m1 stop
Delta Logo
8:55 am - 3:38 pm
ORD
-
GRB
6h 43m1 stop
$219Delta
Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
5:24 pm - 6:50 pm
GRB
-
ORD
1h 26mnonstop
United Airlines Logo
1:55 pm - 3:07 pm
ORD
-
GRB
1h 12mnonstop
$239United Airlines
Tue, Jan 20 - Sat, Jan 24
United Airlines Logo
5:24 pm - 10:58 pm
GRB
-
STL
5h 34m1 stop
United Airlines Logo
8:05 am - 2:02 pm
STL
-
GRB
5h 57m1 stop
$299United Airlines
Thu, Jan 15 - Mon, Jan 19
American Airlines Logo
6:00 am - 3:04 pm
GRB
-
STL
9h 04m2 stops
American Airlines Logo
6:00 am - 10:50 am
STL
-
GRB
4h 50m1 stop
$334American Airlines
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 $248 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 $248.

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 $269, 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 Wednesday and avoiding Sundays for the best deals.

Good to know

Low seasonNovember
Cheapest flight$179
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Green Bay to Chicago O'Hare Airport

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 $464 on average. Morning departures are around 4% 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 $679.

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 $236 one-way - $319 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 9128 reviews
7.3Comfort
7.7Boarding
8.1Crew
6.6Food
7.1Entertainment
Airline reviews

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

10.0 ExcellentSandy, Dec 2025
TPA - ORD
Read more United Airlines reviews

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

They did the one thing that really matters - got to Chicago early.

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Very bad! They kept delaying my flight and wouldn’t do anything about it

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

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.

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

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

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

Information on your arrival and departure airports