$76 Find Cheap Flights from Idaho to Illinois

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Low seasonJanuary
High seasonJuly
Cheapest flight$76
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Spokane to Chicago Midway Airport

FAQs for booking flights from Idaho to Illinois

  • How does KAYAK find such low prices on flights from Idaho 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 Idaho to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Idaho 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 Idaho 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 Idaho 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 Idaho 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 Idaho to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Illinois is Chicago Midway Airport (MDW), with an average flight price of $179.

  • What is the cheapest day to fly to Illinois?

    Based on KAYAK data, the cheapest day to fly to Illinois is Saturday where round-trip tickets can be as cheap as $582. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $949 on average.

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

    The cheapest time of day to fly to Illinois is generally in the afternoon, when round-trip flights cost $441 on average. Morning departures are around 72% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $769.

  • What is the cheapest flight to Illinois?

    The cheapest ticket to Illinois from Idaho found in the last 72 hours was to Chicago Midway Airport, at $233 round-trip. The most popular route is Boise (BOI) to Chicago Midway Airport (MDW) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $233.

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

    The cheapest month for flights from Idaho to Illinois is February, when tickets cost $300 (return) on average. On the other hand, the most expensive months are November and March, when the average cost of round-trip tickets is $573 and $489 respectively.

  • How far in advance should I book a flight from Idaho to Illinois?

    To get a below average price on the flight from Idaho to Illinois, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

  • How long is the flight to Illinois?

    An average nonstop flight from Idaho to Illinois takes 8h 45m, covering a distance of 1359 miles. The shortest route is Jackson (JAC) to Chicago O'Hare Intl Airport (ORD) with an average flight time of 3h 06m.

  • What are the most popular destinations in Illinois?

    Based on KAYAK flight searches, the most popular destination is Chicago (72% of total searches to Illinois). The next most popular destinations are St. Louis (24%) and Moline (2%). Searches for flights to Peoria (1%), to Bloomington (1%) and to Springfield (0%) are also popular.

Reviews of the top 5 airlines serving from Idaho to Illinois

 
Need help choosing which airline to fly with from Idaho 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.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.1Food
7.8Comfort
8.1Boarding
7.1Entertainment
8.5Crew
Airline reviews

Seats very comfortable and legroom appreciated. All in all, it was a great experience.

10.0 ExcellentMatt, Jul 2025SEA - ATL
Read more Alaska Airlines reviews

Seats very comfortable and legroom appreciated. All in all, it was a great experience.

Original flight was canceled, and the automatically booked second flight was immediately delayed. I arrived about 4 hours later than planned with only a $12 meal voucher that didn't fully cover a sandwich at airport prices.

fine. only problem,,,, for some,,,,was that many people started trying to exit from the back of the plane,, . lots of irate people. there should be a flight attendant mid plane..to be sure that doesn't happen. The crew up front had no idea what was happening. One big guy started it..then a bunch of others followed his lead. could have gotten ugly... One man stepped in and questioned those rule breakers.. nothing bad happened,,,but......

Wonderful staff who honored sleepy overnight travelers and still met needs quietly and quickly!

Wonderful respectful staff for a short flight late at night...lots of considerations all met!

I was expecting better service from Alaska Airlines. I registered for assistance since I have a disability. The terminal in Seattle, WA was very unprofessional and at times rude. The BWI location was the exact opposite. I will NOT consider Alaska Airlines for future flights.

It was fine. 2 hour delay due to mechanical issue. I understand issues will occur, just wish instead of Capt repeatedly telling us we will be getting off the ground “momentarily” they would just be honest and either say they have no idea-or it’s going to be a few hours! All in all FAs are usually pretty nice :)

I am mobility challenged and ground crew were accommodating to my needs. One must walk up a ramp to board Alaska planes. Terminal to tarmac to ramp to plane.

Way too warm for that length of flight!! If the pretzel bag gets any smaller, there won't even be any pretzels to eat!! Crew didn't talk. $99 just for an aisle seat is ludicrous!! Probably won't fly Alaska again.

Everything smooth (including the landing) and on time. Easy. Thanks.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

For my birthday trip this was my second time ever flying, this trip was the best.

after landing, we stay 2 hours on the taxi way before reaching the gate The airline and the crew were good though

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Sat on tarmac for 2 hours and then missed my connecting flight

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

Everything was on time. I was disappointed by the front section female, African American flight attendant. I did not see her name tag or would have identified by name not race. As passengers moved to the bathroom early in flight, she would say with a disdainful tone “I have to say the seat belt light is on” then go back to her book. Better trained flight attendants say something like be careful the seat belt light is on.

Cluster mess boarding. Can't wait for SWA reserved seating. Internet didn't seem to work on the plane.

Flights delayed by 4-6 hours. Boarding was a mess and unclear. Bags were not at arrival airport and had never even been put on the plane. No idea when I’ll get them. Don’t fly into Denver!

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

After all the weather issues at least they got me to my destination the next day

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

From Atlanta to Savannah - flight connection was way to short (we weren't even late landing ) and flight was already boarding when we landed - we were told we were the last on board and so we had to gate check our bags. Once we got on the plane, there were at least seven open bag spots so that was unnecessary delay. There should be better communication between the gate agent and the crew.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

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.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The plane was in Moline all night. Consequently, we assumed an on time departure at 8:15am. Unfortunately, and as is the normal case with United in Moline, we departed 2.5 hours late. When the crew came, it was discovered that there was very little heat in the plane. Seems this should have been checked hours before the crew arrived. Then when we boarded and the plane was to be de-iced, the United de-icing truck was not working! We awaited the American Airlines truck. All of this caused us to miss our connection in Chicago. My suggestion is never take United Airlines flight from Moline. We have been disappointed 80% of the time and have vowed to not take United again from Moline.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

The flight was fine but the 8 hour delay in Chicago was awful - 5 gate changes and repeated delays without an explanation. No vouchers. Nothing.

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Not sure the logic of the boarding in Groups. I was loaded first on the aisle. Then the guy in the middle. Then the guy by the window. Constantly holding up the other people boarding behind them with us blocking the aisle and this happened in most of the other rows

To start, I’d like to say that every American Airline personnel I interacted with on the ground, especially flight crew, was very friendly and did their best to help me out. Despite this, however, my experience with the airline was an entire mess. The 7:19 PM flight was heavily delayed due to weather, and pushed to 10:30 AM the next morning. Because of this, I had to spend the night inside of the airport. At some point later in the night, I got an email saying that the flight had been canceled. I called the support number, and the representative on the other line told me that the flight was still on and that I didn’t need to rebook. The next morning, no one came to the gate to open the door for the crew until almost 11 AM. By this time the flight crew had been waiting for over an hour, and they had called management to get someone to open the door for them multiple times. Around 11:30, the gate screen had changed to a different flight. I ended up buying a last minute ticket with Southwest airline just to get to Chicago, because the next flight with American wasn’t until 7:19 pm that day. Now, earlier that morning my suitcase had been sent ahead of me to ORD. I went to baggage claim to ask them if I could have my suitcase forwarded to where I was staying. The representative at SDF baggage claim said they could and put the claim in for me. As I was going back through TSA, I got an email that the airline had found my suitcase, but the next step was to send it BACK to SDF. I called the airline support number again, and I made it clear that my suitcase needed to stay in Chicago and to not come back to SDF. The representative told me that they would hold my suitcase at ORD and that it wasn’t going to be forwarded anywhere. Once I got there, I found that they had loaded my suitcase onto a plane to send it back to SDF. Thankfully, I had gotten to the baggage claim counter in time for them to put in a request to bring my suitcase back up. My refund with the airline is processing already, but because of this entire experience and miscommunication at every turn of the way, I will not book with American Airlines in the future.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Crew professional. Easy bag drop off. On time. Good entertainment.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Per usual, flight status, staff courtesy and professionalism were excellent

Book cheap flights from Idaho to Illinois

Recent round-trip flight deals

8/24Sun
1 stopFrontier
10h 40mGEG-ORD
8/28Thu
1 stopFrontier
6h 57mORD-GEG
$161
7/20Sun
1 stopFrontier
10h 34mBOI-ORD
7/24Thu
1 stopFrontier
7h 06mORD-BOI
$162
9/6Sat
1 stopDelta
6h 00mGEG-ORD
9/13Sat
1 stopDelta
6h 15mORD-GEG
$195
9/30Tue
2 stopsDelta
12h 35mGEG-MDW
10/4Sat
1 stopDelta
6h 43mMDW-GEG
$200
9/23Tue
nonstopAmerican Airlines
3h 37mGEG-ORD
9/26Fri
nonstopAmerican Airlines
3h 58mORD-GEG
$215
9/6Sat
1 stopSouthwest
7h 55mGEG-MDW
9/17Wed
1 stopSouthwest
7h 20mMDW-GEG
$215
8/23Sat
nonstopAmerican Airlines
3h 33mBOI-ORD
8/30Sat
nonstopAmerican Airlines
3h 39mORD-BOI
$216
9/6Sat
2 stopsSouthwest
9h 10mGEG-MDW
9/17Wed
1 stopSouthwest
8h 45mMDW-GEG
$220
9/20Sat
nonstopUnited Airlines
3h 33mBOI-ORD
9/23Tue
1 stopUnited Airlines
8h 34mORD-BOI
$221
8/5Tue
nonstopUnited Airlines
3h 26mBOI-ORD
8/11Mon
1 stopUnited Airlines
5h 46mORD-BOI
$226

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Recent one-way flight deals

10/16Thu
1 stopFrontier
8h 35mGEG-MDW
$76
7/21Mon
1 stopSpirit Airlines
9h 15mBOI-ORD
$79
10/21Tue
1 stopDelta
7h 04mGEG-MDW
$98
8/20Wed
1 stopDelta
6h 26mGEG-ORD
$98
9/13Sat
1 stopSouthwest
7h 05mGEG-MDW
$108
9/17Wed
nonstopAmerican Airlines
3h 15mJAC-ORD
$110
10/8Wed
1 stopSouthwest
11h 00mGEG-MDW
$113
9/29Mon
nonstopAmerican Airlines
3h 48mGEG-ORD
$118
9/26Fri
nonstopUnited Airlines
3h 33mBOI-ORD
$128
11/20Thu
1 stopUnited Airlines
7h 03mGEG-ORD
$128

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Last minute flights from Idaho to Illinois

Last minute flight, train and bus deals

7/8Tue
multi-stopFrontier
10h 19mGEG-ORD
7/10Thu
multi-stopFrontier
7h 23mORD-GEG
$202
7/4Fri
nonstopUnited Airlines
3h 26mBOI-ORD
7/7Mon
multi-stopUnited Airlines
5h 46mORD-BOI
$326
7/8Tue
multi-stopDelta
11h 19mGEG-MDW
7/10Thu
multi-stopDelta
5h 53mMDW-GEG
$327
7/4Fri
multi-stopDelta
6h 35mBOI-ORD
7/7Mon
multi-stopDelta
6h 42mORD-BOI
$336
7/5Sat
multi-stopSouthwest
6h 25mBOI-ORD
7/5Sat
multi-stopSouthwest
5h 50mORD-BOI
$362
7/7Mon
multi-stopAmerican Airlines
9h 20mGEG-ORD
7/9Wed
multi-stopAmerican Airlines
8h 18mORD-GEG
$382
7/8Tue
multi-stopSouthwest
8h 05mGEG-MDW
7/10Thu
multi-stopSouthwest
7h 25mMDW-GEG
$385
7/8Tue
multi-stopAmerican Airlines
7h 45mBOI-ORD
7/13Sun
nonstopAmerican Airlines
3h 51mORD-BOI
$531
7/8Tue
multi-stopAlaska Airlines
9h 10mBOI-ORD
7/13Sun
multi-stopAlaska Airlines
9h 04mORD-BOI
$675
7/4Fri
multi-stopAlaska Airlines
6h 58mIDA-ORD
7/7Mon
multi-stopAlaska Airlines
19h 40mORD-IDA
$704

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Everything you need to know for your flight to Illinois

Cabin class types available on flights to Idaho

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