$86 Find Cheap Flights from Illinois to Idaho

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Low seasonApril
High seasonJuly
Cheapest flight$86
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Chicago Midway Airport to Spokane

FAQs for booking flights from Illinois to Idaho

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

    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 Idaho.

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

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

    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 Idaho 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 Idaho?

    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 Idaho 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 Idaho?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Idaho is Boise Air Term. Gowen Fld Airport (BOI), with an average flight price of $196.

  • What is the cheapest day to fly to Idaho?

    Based on KAYAK data, the cheapest day to fly to Idaho is Saturday where round-trip tickets can be as cheap as $389. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $619 on average.

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

    The cheapest time of day to fly to Idaho is generally in the afternoon, when round-trip flights cost $327 on average. The most expensive time of day to fly to Idaho is generally at night, which is peak travel time and where the average cost of a ticket is $575.

  • What is the cheapest flight to Idaho?

    The cheapest ticket to Idaho from Illinois found in the last 72 hours was to Boise, at $255 round-trip. The most popular route is Chicago Midway Airport (MDW) to Boise (BOI) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $255.

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

    The cheapest month for flights from Illinois to Idaho is May, when tickets cost $307 (return) on average. On the other hand, the most expensive months are November and December, when the average cost of round-trip tickets is $562 and $502 respectively.

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

    To get a below average price on the flight from Illinois to Idaho, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

  • How long is the flight to Idaho?

    An average nonstop flight from Illinois to Idaho takes 8h 16m, covering a distance of 1307 miles. The shortest route is Chicago O'Hare Intl Airport (ORD) to Jackson (JAC) with an average flight time of 3h 06m.

  • What are the most popular destinations in Idaho?

    Based on KAYAK flight searches, the most popular destination is Jackson (52% of total searches to Idaho). The next most popular destinations are Spokane (19%) and Boise (17%). Searches for flights to Idaho Falls (7%), to Hailey (2%) and to West Yellowstone (2%) are also popular.

Top 5 airlines serving from Illinois to Idaho

 
Need help choosing which airline to fly with from Illinois to Idaho? 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
7.1Entertainment
8.1Boarding
7.8Comfort
8.5Crew
Airline reviews

It sucks, flight delays at FAT caused us to miss a day at lodge and overnight in Seattle. Flight delays coming home also. Never again

2.0 MediocreAnonymous, Jun 2025PSG - JNU
Read more Alaska Airlines reviews

It sucks, flight delays at FAT caused us to miss a day at lodge and overnight in Seattle. Flight delays coming home also. Never again

We had to take the train to our next gate but had time to eat a meal. When to our next gate and asked employee about gate and got informed that gate had been changed so back on train to next gate. So thankful she was there and informed us of gate change. Because of the issue the boarding was slow but employees were there and busy helping all and keeping it organized.

The crew the employees were friendly and excellent. There was a problem with the plane and they had workers there immediately working on it. They made sure the people that had immediate connects knew what gates they had to get to and had them leave the plane first. Very thoughtful.

On time, smooth take off and landing, efficient boarding. Gate staff excellent, stewardess grumpy, but civil enough.

No WiFi available. It was too late to order food also. Guy next to me was huge (not fat) so had his shoulder & thigh next to me the whole way. Plane was delayed leaving PDX due to 8 other planes waiting. Not my best Alaska airlines flight.

Very pleasant and the flight felt like it went by quick

We waited over an hour for our luggage to arrive at the carousel in Seattle.

So much better coming back to Seattle than my trip TO Chicago. This crew actually communicated with the passengers!! Rebecca, one of the crew, stopped and visited with me about sign language. She should get a bonus of some kind!! She's a very neat gal!! It was still warm inside the plane, but it was packed! I still think you could do better than those teeny tiny pretzels! These were spicy and tasted terrible! All in all, still a better ride coming home. Go Seahawks!!

Arrival delay waiting for another flight to be towed and deboarded

In GEG I arrived at 0930 for a 1600 flight. Alaska had a rule that you could not check your bags until 4 hours before flight time. I was forced to sit in a chilly lobby for hours. I had access to a bathroom, but could not go into terminal for food and drink. Boarding and flight OK

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

I am very bothered by the events today. I can't believe the flight attendants allowed someone to take my seat and made me move. It was embarrassing. I was in the right. The lady just didn't want move. I can't believe delta would allow this to stand and disrespect my rights as a passenger. The lady complained about her leg and that she couldn't move. Firstly somehow she was able to make it to row 24. Not sure how much her leg could have hurt. Secondly, I'm in plenty of pain myself. I just finished chemotherapy a several weeks ago. My body is constantly sore. Yet deltas flight attendants didn't appropriately protect my rights. In the end they found me a seat on the plane but I want to understand how delta can operate this way. They in essence allowed a bully to get their way.

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 was charged for my daughters bag when I am supposed to receive two free checked bags with my United Explorer card.

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!

Flight was great. Efficient boarding. Short flight. Early arrival. Friendly flight crew. The entertainment system did not work well. Could not access it until the aircraft reached 10K feet or more. Lots of glitches.

A bit rush for transit. Food and entertainment are not available

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

My flight was scheduled for about 6:05 departure. There were 11 gate changes from 4-7pm and the flight was 3 hours delayed due to operational issues. The plane taxied around the airport for about half an hour before stopping to be de-iced. It would have been nice if we were alerted of the plan to de-ice prior to the 30 minute drive around the airport. The flight attendant was friendly, which was the only redeeming thing about this flight. As a former flight attendant for United, I was extremely disappointed.

Delays took 2hours and thirty minutes making me miss my connecting flight and make me sit in the Chicago airport for 9 hours

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

Our seats were all the way in back of the plane,

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

Excellent! The gate agents were kind enough to rebook me on an earlier flight saving me from a 6 hour layover. Even my luggage made it despite the fact that the connection was technically too narrow. The flight itself was very comfortable, roomy, and clean. Plenty of space for my carryon items with plugs to charge my phone. After a long international flight of 14 hours, this was an excellent way to end my travels!

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

You were more on time than United. I'm so over united delays.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

My boarding pass wouldn't pull up in the app very easily and had to really dig through my email. That caused a delay in TSA..

I had a TERRIBLE experience with the AA crew. I believe it was disability-related. It’s unlikely I will fly AA again.

Book cheap flights from Illinois to Idaho

Recent round-trip flight deals

10/25Sat
1 stopDelta
5h 35mORD-BOI
10/29Wed
1 stopDelta
9h 10mBOI-ORD
$181
9/28Sun
1 stopSpirit Airlines
6h 23mORD-BOI
10/3Fri
1 stopSpirit Airlines
15h 27mBOI-ORD
$190
8/19Tue
1 stopAlaska Airlines
6h 28mORD-GEG
8/27Wed
1 stopAlaska Airlines
6h 24mGEG-ORD
$214
9/18Thu
1 stopAlaska Airlines
8h 23mORD-GEG
9/23Tue
1 stopAlaska Airlines
6h 24mGEG-ORD
$217
8/22Fri
nonstopAmerican Airlines
3h 10mORD-JAC
8/29Fri
nonstopAmerican Airlines
3h 07mJAC-ORD
$229
9/12Fri
nonstopSouthwest
3h 55mMDW-GEG
9/17Wed
1 stopSouthwest
12h 25mGEG-MDW
$234
7/16Wed
nonstopUnited Airlines
3h 15mORD-JAC
7/23Wed
1 stopUnited Airlines
7h 23mJAC-ORD
$239
9/12Fri
2 stopsSouthwest
11h 30mORD-GEG
9/17Wed
1 stopSouthwest
6h 55mGEG-ORD
$243
9/1Mon
1 stopAmerican Airlines
6h 19mPIA-JAC
9/11Thu
1 stopAmerican Airlines
6h 59mJAC-PIA
$249
8/20Wed
1 stopUnited Airlines
8h 34mORD-BOI
10/22Wed
nonstopUnited Airlines
3h 39mBOI-ORD
$261

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Recent one-way flight deals

10/22Wed
1 stopSouthwest
7h 00mMDW-GEG
$86
8/12Tue
1 stopDelta
5h 37mMDW-BOI
$91
9/29Mon
1 stopSpirit Airlines
6h 23mORD-BOI
$95
8/18Mon
1 stopSpirit Airlines
6h 23mORD-BOI
$100
8/13Wed
1 stopAlaska Airlines
8h 28mORD-GEG
$107
11/18Tue
1 stopAlaska Airlines
7h 02mORD-BOI
$117
9/10Wed
nonstopUnited Airlines
4h 12mORD-GEG
$118
11/18Tue
nonstopUnited Airlines
3h 54mORD-BOI
$128
8/5Tue
nonstopAmerican Airlines
3h 50mORD-GEG
$147
12/2Tue
nonstopAmerican Airlines
3h 55mORD-BOI
$156

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Last minute flights from Illinois to Idaho

Last minute flight, train and bus deals

6/13Fri
multi-stopDelta
6h 22mORD-GEG
6/17Tue
multi-stopDelta
9h 03mGEG-ORD
$271
6/17Tue
nonstopAmerican Airlines
4h 16mORD-GEG
6/28Sat
nonstopAmerican Airlines
3h 44mGEG-ORD
$275
6/13Fri
multi-stopDelta
8h 00mORD-GEG
6/15Sun
multi-stopDelta
10h 44mGEG-ORD
$276
6/17Tue
multi-stopSouthwest
6h 00mMDW-GEG
6/28Sat
nonstopSouthwest
3h 25mGEG-MDW
$295
6/17Tue
multi-stopAmerican Airlines
7h 46mORD-GEG
6/28Sat
nonstopAmerican Airlines
3h 44mGEG-ORD
$295
6/13Fri
nonstopUnited Airlines
4h 16mORD-GEG
6/17Tue
nonstopUnited Airlines
3h 39mGEG-ORD
$302
6/17Tue
multi-stopSouthwest
6h 00mMDW-GEG
6/28Sat
multi-stopSouthwest
7h 05mGEG-MDW
$305
6/13Fri
nonstopUnited Airlines
4h 16mORD-GEG
6/17Tue
multi-stopUnited Airlines
7h 35mGEG-ORD
$312
6/13Fri
multi-stopAlaska Airlines
10h 22mORD-IDA
6/16Mon
multi-stopAlaska Airlines
6h 58mIDA-ORD
$779
6/13Fri
multi-stopAlaska Airlines
10h 04mORD-BOI
6/15Sun
multi-stopAlaska Airlines
8h 15mBOI-ORD
$841

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Everything you need to know for your flight to Idaho

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.

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