$78 Find Cheap Flights from Chicago to Idaho

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Idaho departing on 8/14. 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.
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KAYAK searches hundreds of travel sites at once for deals on flights to Idaho

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Idaho, 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 Chicago to Idaho, as well as popular online travel agencies
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Best Idaho Flight Deals from Chicago

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Boise
Boisenonstop$155
Idaho Falls
Idaho Falls1 stop$335
Hailey
Hailey1 stop$347
Lewiston
Lewiston2 stops$587
Twin Falls
Twin Falls1 stop$566
Spokane
Spokanenonstop$177

Cheap Flight Deals from Chicago to Idaho (CHI-USID)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Idaho 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.

Recent round-trip flight deals from Chicago to Idaho

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Chicago to Idaho.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
9:45 am - 12:36 pmORD-BOI
3h 51mnonstop
1:17 pm - 5:54 pmBOI-ORD
3h 37mnonstop
$155American Airlines
Find Deal
Tue, Aug 12 - Tue, Aug 19
8:45 am - 11:43 amORD-BOI
3h 58mnonstop
7:15 pm - 5:39 amBOI-ORD
9h 24m1 stop
$161United Airlines
Find Deal
Sat, Jul 5 - Sat, Jul 12
6:00 am - 12:16 pmORD-BOI
7h 16m1 stop
2:41 pm - 9:59 pmBOI-ORD
6h 18m1 stop
$169Alaska Airlines
Find Deal
Tue, May 6 - Tue, May 6
6:00 am - 1:47 pmORD-BOI
8h 47m1 stop
4:20 pm - 11:59 pmBOI-ORD
6h 39m1 stop
$174Alaska Airlines
Find Deal
Sat, May 3 - Tue, May 6
7:00 pm - 12:03 amMDW-BOI
6h 03m1 stop
2:30 pm - 10:22 pmBOI-MDW
6h 52m1 stop
$175Delta
Find Deal
Tue, Apr 22 - Sat, Apr 26
5:25 pm - 11:55 pmORD-BOI
7h 30m1 stop
4:45 pm - 11:05 pmBOI-ORD
5h 20m1 stop
$175Southwest
Find Deal
Tue, Jun 3 - Sat, Jun 7
10:45 am - 12:35 pmORD-GEG
3h 50mnonstop
1:39 pm - 7:20 pmGEG-ORD
3h 41mnonstop
$177American Airlines
Find Deal
Sun, Aug 24 - Tue, Sep 2
7:00 pm - 12:03 amMDW-BOI
6h 03m1 stop
5:30 am - 5:59 pmBOI-MDW
11h 29m2 stops
$180Delta
Find Deal
Tue, Apr 22 - Sat, Apr 26
5:02 am - 9:46 amORD-BOI
5h 44m1 stop
7:15 pm - 5:39 amBOI-ORD
9h 24m1 stop
$206United Airlines
Find Deal
Tue, Jun 24 - Sat, Jun 28
6:55 pm - 12:30 amORD-BOI
6h 35m1 stop
7:10 am - 5:55 pmBOI-ORD
9h 45m1 stop
$220Southwest
Find Deal
Thu, Jul 10 - Sat, Jul 12

KAYAK's insights & trends for Chicago to Idaho flights

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

What is the cheapest Chicago to Idaho flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Chicago to Idaho.
The cheapest ticket to Idaho from Chicago found in the last 72 hours was to Boise, at $237 round-trip. The most popular route is from Chicago O'Hare Intl Airport (ORD) to Boise (BOI), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $237.

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

The average price for all round-trip flights from Chicago to Idaho depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Idaho is generally in the afternoon, when round-trip flights cost $327 on average. Morning departures are around 46% more expensive than evening flights, 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 $583.

What is the cheapest month to fly from Chicago to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Chicago to Idaho is September, when tickets cost $348 (return) on average. On the other hand, the most expensive months are November and March, when the average cost of round-trip tickets is $508 and $477 respectively.

What’s the cheapest day of the week to fly from Chicago to Idaho?

The average price of all round-trip flights from Chicago to Idaho clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Idaho 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 Chicago to Idaho. For your return ticket, we recommend flying on a Saturday and avoiding Sundays for the best deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago to Idaho, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Chicago 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.

Good to know

Low season

January

High season

July

Cheapest flight

$78
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from Chicago O'Hare Airport to Boise

FAQs - booking Idaho flights

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

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

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

See more FAQs

Top 5 airlines serving from Chicago to Idaho

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Idaho. 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 Chicago 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 9818 reviews
7.9Comfort
8.2Boarding
7.1Entertainment
8.5Crew
7.1Food
Airline reviews

It was alright other than the changes in the Alaska Lounge. That and the migraine I had were disappointing. Other then that everything went well.

8.0 ExcellentAnonymous, Mar 2025PDX - DFW
Read more Alaska Airlines reviews

It was alright other than the changes in the Alaska Lounge. That and the migraine I had were disappointing. Other then that everything went well.

Took forever to get on board. Flights was one hour late.

Amazing. They work with my disabilities with such kindness, attention, wnd diligence. They make it easy for those of us who need a little more extra care.

Everything was good. The flight attendants were great. I was disappointed that there wasn’t any screens on the back of the seats to watch movies, tv, etc. I only had my phone to watch movies on.

They always change the schedule. My original flight got canceled. They put me up in the air flight. I had to stay seven hours in Seattle. That is bad.

I had a great travel experience with Alaska. The agents and cabin crew were all so pleasant and helpful. The plane was clean and comfortable. The connecting flights went smoothly even with some minor delays. All in all, it was nice not to be upset with the journey. I say that because over the last few years all my travel has been on Delta and American, and always involved cranky employees and flight issues. I wish Alaska flew everywhere I need to go. Will definitely fly Alaska every time I have a choice. Thanks for helping me look forward to traveling again.

Flight delayed due to engine issue. For 3+ hours still not on flight

A little delay but nice flight, nice team. Thank you.

Could have had more of a beverage selection than water and apple juice.

Disappointed that there were no TV screens to watch a movie on the six hour flight. Disappointed that the plane did not have the right adapter to connect my phone and my iPad and charge them.

1.5 hour delay, poor service, no compassion from the crew. Terrible experience

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

Short flight with plenty of open seats. Drinks and snacks were still provided even on such a short flight. <1 hr

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

Very good. Sad to learn Southwest is going start to charge for bags

Our flight was diverted from being a non-stop to getting within 150 miles and requiring another plane. We heard 4 or 5 different versions from SW as to why we had to stop, then wait for a replacement plane. Five hour delay, weather did not come up as a single excuse.... communication was not clear and well explained. No one really took charge!

My flight to Chicago left and landed early. My return flight left two minutes late and arrived 2 minutes late. My seat selections were ideal! There were no snacks going to Chicago and no snacks on the return trip. There are no charging outlets on board.

WiFi on the flight was not working. Thus, entertainment options were limited.

Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

Terrible and im avoiding them in the future. My initial flight was delayed causing me to rebook my flight and when speaking with the representative to rebook I explained this is the second time my flights were delayed and they did nothing to help me. I wasn't booked to comfort plus or given a voucher or anything. I was almost late for my meeting that I needed to attend on Monday because of the games delta played delaying my flights even more and putting me in the very back of the plane next to an extremely intoxicated passenger

Flights on time. .Ride was as comfortable as can be expected in steerage. Luggage arrived at destination. Attendants were fairly friendly.

Great staff. Wifi is terrible. Signing up for skylines is a painstaking process. Had to call customer service just to get my flight itinerary and confirmation sent to me. Consistent delays. A well staffed company that is run so poorly. Upper management needs to be renewed.

The WiFi didn't seem as fast as it normally is

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

The crew was wonderful and attentive. The seats near exit row were restrictive. Offer healthy snacks please

Delta is a premier airline so my expectations are most always met.

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,

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence.

The flight attendants in First Class were mediocre at best. They did not take our tray away until we were about to land and only did so when I press the call button. The United person at the United Club was asked to get us our boarding pass since we missed the flight due in Chicago. She argued that we did not have seats on the flight given to us in Moline. Furthermore, she was adamant that we did not have a First Class ticket. After I spent much time with her trying to show we were correct, she reluctantly agreed. She was probably the most incompetent ticketing person I have ever met and I have traveled 3 million miles on United plus many additional miles with other carriers. United has definitely deteriorated in more than on way.

Short flight - no food understandable. Flight was delayed for over an hour. Overall, it was good.

We arrived early and finally made it to our gate almost an hour after.

Was a pain having to leave the plane and reboard but glad the plane was fixed

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.

Everything you need to know for your flight from Chicago to Idaho

Cabin class types available on flights to Idaho

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

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