$92 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 10/1. 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

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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Cheap Flights from Chicago to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boise1 stop$222
Idaho Falls
Idaho Falls1 stop$371
Hailey
Hailey1 stop$275
Lewiston
Lewiston2 stops$953
Twin Falls
Twin Falls2 stops$465
Spokane
Spokane1 stop$211
Boise
Boise1 stop$222
Idaho Falls
Idaho Falls1 stop$371
Hailey
Hailey1 stop$275
Lewiston
Lewiston2 stops$953
Twin Falls
Twin Falls2 stops$465
Spokane
Spokane1 stop$211

Book Cheap Chicago to Idaho Plane Tickets

 
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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to Idaho

Sat, Oct 25 - Sat, Nov 1
Hawaiian Airlines Logo
5:59 pm - 12:27 amORD-GEG
8h 28m1 stop
Hawaiian Airlines Logo
7:00 am - 6:59 pmGEG-ORD
9h 59m1 stop
$211Hawaiian Airlines
Find Deal
Wed, Oct 22 - Tue, Oct 28
Delta Logo
7:37 am - 12:35 pmORD-GEG
6h 58m1 stop
Delta Logo
7:15 am - 5:10 pmGEG-ORD
7h 55m1 stop
$215Delta
Find Deal
Sat, Oct 25 - Sat, Nov 1
American Airlines Logo
10:30 am - 12:20 pmORD-GEG
3h 50mnonstop
American Airlines Logo
12:49 pm - 6:41 pmGEG-ORD
3h 52mnonstop
$216American Airlines
Find Deal
Thu, Oct 2 - Sat, Oct 4
American Airlines Logo
5:20 pm - 7:17 pmORD-GEG
3h 57mnonstop
American Airlines Logo
1:30 pm - 7:18 pmGEG-ORD
3h 48mnonstop
$235American Airlines
Find Deal
Sat, Oct 18 - Tue, Oct 21
Southwest Logo
1:50 pm - 9:20 pmORD-GEG
9h 30m2 stops
Southwest Logo
12:50 pm - 11:40 pmGEG-ORD
8h 50m1 stop
$240Southwest
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Wed, Sep 24 - Sat, Oct 4
United Airlines Logo
6:15 am - 1:49 pmORD-BOI
8h 34m1 stop
United Airlines Logo
12:35 pm - 5:08 pmBOI-ORD
3h 33mnonstop
$245United Airlines
Find Deal
Sat, Jan 10 - Fri, Jan 16
United Airlines Logo
8:45 am - 10:55 amORD-GEG
4h 10mnonstop
United Airlines Logo
4:10 pm - 11:59 pmGEG-ORD
5h 49m1 stop
$245United Airlines
Find Deal
Tue, Sep 23 - Mon, Oct 6
Alaska Airlines Logo
8:00 am - 3:00 pmORD-BOI
8h 00m1 stop
Alaska Airlines Logo
7:13 am - 6:59 pmBOI-ORD
10h 46m1 stop
$248Alaska Airlines
Find Deal
Tue, Sep 23 - Wed, Oct 1
Alaska Airlines Logo
8:00 am - 3:00 pmORD-BOI
8h 00m1 stop
Alaska Airlines Logo
4:34 pm - 12:03 amBOI-ORD
6h 29m1 stop
$250Alaska Airlines
Find Deal
Sat, Oct 18 - Tue, Oct 21
Southwest Logo
1:50 pm - 9:20 pmORD-GEG
9h 30m2 stops
Southwest Logo
11:50 am - 11:40 pmGEG-ORD
9h 50m2 stops
$259Southwest
Find Deal
Booking Insights

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?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Idaho from Chicago found in the last 72 hours was to Boise, at $233 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 $233.

Can I save money by flying with a layover from Chicago to Idaho?

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $646 on average.

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 $322 (return) on average. On the other hand, the most expensive months are November and December, when the average cost of round-trip tickets is $508 and $473 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 Wednesday, 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 Thursday 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, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$92
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 2% 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.

  • 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 $608.

Reviews of the 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 10000 reviews
7.8Comfort
7.1Food
8.1Boarding
7.0Entertainment
8.5Crew
Airline reviews

Flight attendant was awful, I felt second hand embarrassment with every one of her interactions with people onboard. She was so incredibly rude every chance she got

2.0 MediocreAnonymous, Sep 2025SFO - PAE
Read more Alaska Airlines reviews

Flight attendant was awful, I felt second hand embarrassment with every one of her interactions with people onboard. She was so incredibly rude every chance she got

They offer the only direct flight from Seattle to Pittsburgh.

Would have been nice if my flight was on time and I didn't miss my connection and had to spend the night in Seattle, losing one night at the VRBO I paid for in Sitka. And, my connecting flight was still at the gate when my flight was taxiing to it's gate. But, it took off. Too bad for me. I really can't believe you even want me to review or comment on my experience.

Checking in very confusing compared to Hawaiian Airlines - much simpler! Front checking in at airport can improve. Hawaiian service always gives the extra mile, with a smile. Alaska can use and spread the Aloha Spirit. Mahalo nui loa Thank you 🤙

Very nice as always. Not that it’s anyone’s fault really but for some reason the seat (16C) was really hard…. Not typical for your planes… dunno what or why… maybe it was just me ?, The flight was great otherwise

would have been nice for flight to not be delayed by 2 hours so that we had to pay $80 to get home since BART had shut down. i thought a 10pm arrival would leave enough time to account for delays but i was wrong.

They were friendly, efficient and got our bags to us so fast at the end of the flight.

10 hour delay. Fuel spill. Crew had to drive to Indianapolis to a get a plane. The longest day of travel ever. Poor service.Little to no communication.

Flight was delayed 5 hours. Missed connecting flight. Very little apology or attempt to make anything better. Got a $150 credit for next flight. There won’t be another flight. First time on Alaska - last time. Keep your credit. Should have done something more

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!!

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

Other than a bit of a delay, everything was good. Again, the boarding process and picking seats is the only thing I don't enjoy.

If we are going to have to pay for luggage, make it easier to do. Put something on the app during check-in so I don't need to do it at the kiosk. I've done it twice recently and I ended up having to pay at the desk because something went wrong at the kiosk in Tampa.

Better and more food and drinks. Put msnbc and free speech tv on the news channel selection list.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

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.

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

I wish American Airlines would change the airline industry by loading the plane back to front instead of front to back. Planes would board so much more smoothly and quickly.

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.

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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