$45 Find Cheap Flights from Illinois to Wisconsin

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Good to know

Low seasonJanuary
Cheapest flight$45
Best time to beat the crowds with an average 3% drop in price.
Flight from St. Louis to Chicago O'Hare Airport

FAQs for booking flights from Illinois to Wisconsin

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

    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 Illinois to Wisconsin.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Wisconsin 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 Illinois to Wisconsin?

    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 Illinois to Wisconsin 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 Illinois to Wisconsin?

    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 Illinois to Wisconsin up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines fly most frequently to Wisconsin?

    Illinois and Wisconsin are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (358 flights per week), American Airlines (262 flights per week), and Air New Zealand (250 flights per week).

  • How many airports are there in Wisconsin?

    There are 8 airports in Wisconsin. The busiest airport is Milwaukee-Mitchell Airport (MKE), with 44% of all flights arriving there.

  • Which is the cheapest airport to fly into in Wisconsin?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Wisconsin is Milwaukee-Mitchell Airport (MKE), with an average flight price of $168.

  • What is the cheapest day to fly to Wisconsin?

    Based on KAYAK data, the cheapest day to fly to Wisconsin is Monday where round-trip tickets can be as cheap as $199. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are $361 on average.

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

    The cheapest time of day to fly to Wisconsin is generally at night, when round-trip flights cost $194 on average. Morning departures are around 25% cheaper than evening flights, on average. The most expensive time of day to fly to Wisconsin is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $320.

  • What is the cheapest flight to Wisconsin?

    The cheapest ticket to Wisconsin from Illinois found in the last 72 hours was to Green Bay, at $179 round-trip. The most popular route is Chicago O'Hare Intl Airport (ORD) to Madison (MSN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $436.

  • What is the cheapest month to fly from Illinois to Wisconsin?

    The cheapest month for flights from Illinois to Wisconsin is January, when tickets cost $179 (return) on average. On the other hand, the most expensive months are December and April, when the average cost of round-trip tickets is $383 and $369 respectively.

  • How many cities have direct flights to Wisconsin?

    From Illinois, there are direct flights to Wisconsin from 1 city. This city is Chicago and there are 1,596 direct flights each week.

  • How many direct flights to Wisconsin are there each day?

    There are around 228 direct flights from within Illinois to Wisconsin every day. Most flights (38%) depart in the afternoon.

  • How many direct flights to Wisconsin are there each week?

    Each week there are around 1,596 direct flights from within Illinois to Wisconsin. The most common day for departures is Sunday, with 17% of flights taking off on this day.

  • How long is the flight to Wisconsin?

    An average nonstop flight from Illinois to Wisconsin takes 3h 15m, covering a distance of 270 miles. The shortest route is Chicago Midway Airport (MDW) to Milwaukee (MKE) with an average flight time of 0h 45m.

  • How many long-haul flights are there to Wisconsin each week?

    There are not any long-haul (6-12 hour flight duration) or medium-haul (3-6 hour flight duration) flights to Wisconsin. Instead, there are 1,596 short-haul flights (up to 3 hour flight duration), with the most arriving from Chicago.

  • What are the most popular destinations in Wisconsin?

    Based on KAYAK flight searches, the most popular destination is Minneapolis (59% of total searches to Wisconsin). The next most popular destinations are Chicago (26%) and Duluth (5%). Searches for flights to Milwaukee (4%), to Madison (3%) and to Green Bay (1%) are also popular.

Reviews of the top airlines flying from Illinois to Wisconsin

 
Need help choosing which airline to fly with from Illinois to Wisconsin? 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 9276 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
Airline reviews

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

2.0 MediocreRonald, Feb 2026
ORD - BWI
Read more United Airlines reviews

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

I understand weather is an issue, but making us chase our plane down at five scheduled gates across three terminals in an airport the size of O'Hare was unfair. They'd have probably been better off to leave gates as TBD until the inbound plane is in final approach instead of running us all over the place. Also, props to the consistently-unprepared ground crew in Richmond for once again leaving my lane parked short of the gate because they couldn't have a crew in place on time with 2 hours notice...

cabin crew was OK, food was OK, the trip from the US to Munich was actually pretty bad comfort wise. Noisy aircraft, lights never dimmed even in Business class (night flight) barely sufficient amenities for the price. I have millions of miles with United but TBH American is gaining ground and Delta has always been marginally better then United although on paper United has more longes and cheaper upgrades.

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Great flight. On time boarding. Smooth flight and on time arrival at EWR. The flight crew was marvelous and there was a great selection of movies on the entertainment system. Our bags were at the carousel before we got there. Another excellent flight from United.

I liked the snacks and the flight attendants were friendly.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Delayed an hour due to operational issues. Minimal apologies or care for the significant inconvenience caused. Landed at nearly 1am and they still couldn’t find ground staff to get us off the plane promptly.

The aircraft had several problems - from excess fuel to non operational ac. Two hours of delay in Chicago could have been avoided with proper planning and aircraft maintenance.

Crew in Columbia was not prepared for landing. It was a bit of a disaster and getting bags took forever.

The seats from lax to DFW was so tight that I could not move my legs . No WiFi and had to pay . Not a good selection of entertainment

We were upgraded to First Class and it was a great flight

We experienced gate changes and a long delay. My seat was dirty when I boarded and I had to use wipes to clean it myself. There was an unpleasant and overpowering cleaning product scent on the plane as well that lingered through the flight.

My carry on baggage was damaged. Entire trip, I had to carry the baggage. When complained to the boarding crew, they got mad at me and still asked me to valet check in the cabin baggage. Rude boarding crew!!!

Kayak was among the missing. There was not the usual advice regarding next gate after arriving in Dallas. No communication after the reminder to check in before the Moline flight. What happened?

Crew were all friendly and helpful. It was a short flight so just a beverage service with a cookie. After we were boarded the plane took about 45 minutes to leave the gate but it was New Year’s Eve so not shocking there was some delay. Overall good experience and very grateful.

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.

Everything you need to know for your flight to Wisconsin

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.