$112 Find Cheap Flights from Chicago to Idaho - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Chicago to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Sort by: Cheapest
Boise
3h 48mNonstop
from $264per person
Idaho Falls
3h 50mNonstop
from $341per person
Hailey
4h 01mNonstop
from $481per person
Pocatello
6h 48m2 stops
from $544per person
Lewiston
7h 36m2 stops
from $1,014per person
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.

How much is a round-trip flight from Chicago to Idaho?

Flight prices are below average for this route right now.

Flights to Idaho from Chicago usually cost between $298 and $414 in December.
The lowest price found in the past 5 days was $264 on Frontier (Dec 17-Dec 29).

What is the cheapest Chicago to Idaho flight route?

The cheapest ticket to Idaho from Chicago found in the last 5 days was to Boise, at $309 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 5 days was $309.

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

The cheapest time of day to fly to Idaho is generally in the morning, when round-trip flights cost $407 on average. Morning departures are around 8% cheaper 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 $570.

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

No, with an average price for the route of $618, prices are generally cheapest when you fly direct.

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

The cheapest month for flights from Chicago to Idaho is February, when tickets cost $327 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $548 and $474 respectively.

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

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, Sunday is the most expensive day to fly from Chicago to Idaho. For your return ticket, we recommend flying on a Wednesday and avoiding Sundays for the best deals.

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

To get a below average price on the flight from Chicago to Idaho, you should book around 7 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low season

April

Cheapest flight

$112
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 17% 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.

Reviews of the top 5 airlines serving from Chicago to Idaho

 
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.
7.9
Alaska AirlinesOverall score based on 13010 reviews
7.8Comfort
8.1Boarding
8.5Crew
7.0Food
7.0Entertainment
Airline reviews

I paid extra to choose a seat. When arriving at the gate after a very stressful check in at the airport, realized did not get the chosen seat that I PAID for. When I called the airline I was told I did not pay to choose a seat and could not be refunded, but I DID pay extra to choose a seat. And of course, got stuck in a MIDDLE seat. Since the seats are now crammed together, this is especially uncomfortable. The check in for baggage was ridiculous, it was a mile long and the kiosk to check in for the flight was very confusing. We finally sought out help and a very rude representative quickly went through the kiosk and printed a boarding pass that did not provide the PAID for chosen seat. Didn't get to get on the return flight because the flight coming in was delayed several hours, missed the flight by 3 minutes!!!!!!! You really can't hold the door for 3 minutes for a passenger you KNOW you are waiting for??? What stress and had to wait 4 MORE HOURS to get a flight home because you could not keep the door open 3 minutes. 3 minutes. Had only 20 minutes to get from flight to connecting flight and was accused of taking too long to get from gate to gate in Chicago. Flights were delayed all day long coming in and going out, you would think you could wait 3 minutes to allow passengers to get to the connecting flights. HUGE inconvenience, stressful and makes for a really LONG day when the flight leaving Des Moines to Chicago was horribly delayed, already had a horrible experience and missed the connecting flight by 3 minutes. 3 minutes. Airplane was still there, the door closed, why on earth is it such a huge deal to wait a few minutes when flights were already delayed ALL DAY LONG and why is it such a huge deal to REOPEN the door to let another passenger on??!! I used to like Alaska Airlines. I just plain hate flying in general now. The airlines have 0 (zero)care about the people buying tickets and making travel plans and how stressful flying is now. Zero care.

2.0 MediocreAnonymous, Sep 2026
Read more Alaska Airlines reviews

I paid extra to choose a seat. When arriving at the gate after a very stressful check in at the airport, realized did not get the chosen seat that I PAID for. When I called the airline I was told I did not pay to choose a seat and could not be refunded, but I DID pay extra to choose a seat. And of course, got stuck in a MIDDLE seat. Since the seats are now crammed together, this is especially uncomfortable. The check in for baggage was ridiculous, it was a mile long and the kiosk to check in for the flight was very confusing. We finally sought out help and a very rude representative quickly went through the kiosk and printed a boarding pass that did not provide the PAID for chosen seat. Didn't get to get on the return flight because the flight coming in was delayed several hours, missed the flight by 3 minutes!!!!!!! You really can't hold the door for 3 minutes for a passenger you KNOW you are waiting for??? What stress and had to wait 4 MORE HOURS to get a flight home because you could not keep the door open 3 minutes. 3 minutes. Had only 20 minutes to get from flight to connecting flight and was accused of taking too long to get from gate to gate in Chicago. Flights were delayed all day long coming in and going out, you would think you could wait 3 minutes to allow passengers to get to the connecting flights. HUGE inconvenience, stressful and makes for a really LONG day when the flight leaving Des Moines to Chicago was horribly delayed, already had a horrible experience and missed the connecting flight by 3 minutes. 3 minutes. Airplane was still there, the door closed, why on earth is it such a huge deal to wait a few minutes when flights were already delayed ALL DAY LONG and why is it such a huge deal to REOPEN the door to let another passenger on??!! I used to like Alaska Airlines. I just plain hate flying in general now. The airlines have 0 (zero)care about the people buying tickets and making travel plans and how stressful flying is now. Zero care.

They overbooked the flight! Or they said it was over weight, very unnerving as flying is a gamble anyway. They were waiting for six passengers to give up their seats, before they would board the flight, they were offering $1100. I’m guessing towards the purchase of the next ticket which I would never purposely fly with American Airlines. It was just the only flight available with what I needed. American Airlines is the top two worst airlines to fly with. And then after waiting an hour and four minute delay departing they ended up seating the people that they had asked to give up their seats anyway turns out they were not overweight after all. So all of that in a delayed flight and a delayed landing in Des Moines for nothing American Airlines is in competition with United Airlines for the worst airline to fly with.

The seat was comfortable, but I paid for upgraded seats and they did not state that there was no outlets for devices.

Extremely professional crew there are very friendly and first class. Everything worked well on the plane. Food was to be expected. Drinks were very good. Shout out to Charlie in first class who was an excellent flight attendant.

Thanks for all you do to keep us safe and on time!

I like flying Alaska Airlines. I think the staff are happy, the plane is comfortable, the entertainment reasonable, the food acceptable.

No WiFi. Terrible food. Very long walk to the gate and from the gate after landing. Gate changed without notice.

I really hate the seat assignment at the gate. I understand it is so families can sit together but it caused me and others a lot of unnecessary stress and confusion, enough for me to not fly Alaska again. The app is so awful that it did not even update my seat assignment on the boarding pass but sent me a notification of my seat... it showed in Apple Wallet but not in the Alaska app itself. That only made the stress worse. I think most people like myself prefer to know where they are seated at check in 24 hours before so they don't have to anxiously hang out at the gate the entire time. This is not a good use of your agents time either to be dealing with all of us asking where we are sitting. You should automatically assign the multiple seat purchases to be together before they check in and fill us solo travelers in those gaps as we check in.

Great. Went right to the desk and the people were helpful and kind. I was able to get my boarding pass in under 5minutes. They made sure I received the text.

The flight was delayed so we didn’t get into San Diego until almost 1 AM. Otherwise, it was lovely.

Multiple delays due to weather in Chicago, but the crew did their best to get flights rescheduled and on to their destination. I felt like the crews handled a frustrating situation very well, kudos to them! I was very glad to not have a cancelled flight.

Southwest’s point to point system caused a 2 hour delay due to the crew being late from their inbound flight. Also, the WiFi and entertainment didn’t work on the plane.

A) Checked my luggage at the gate but never got to pre board B) if we are helping with checking our carryon and waiting 40 minutes for it we should have some privileges c) luggage took 40-45 minutes to come.. d) I asked for another snack and was told the plane is full.. seriously a small snack

I like the staff members they were super nice and helpful very sweet people :)

Boarding process of asking for volunteers to check bags goes against the system you had before with 2 bags checked free. This process is more of a guilt trip than a caring attitude toward the customer. In addition bag-size scrutiny has increased which also slows down the process of boarding. My wife said she will not fly on your airline again unless there is no other option.

Overall good, just screaming kids in the area the whole flight.

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

I'm 6' 2" and even in economy plenty of leg room

Horrible experience. Delta delayed the flight to 11pm which happens. Apparently the pilots were there but we were waiting for flight attendants to arrive from Detroit and they were delayed. They could have made arrangements but that’s fine. What was truly horrible was that at 10:50pm the pilot comes out and says the flight will be cancelled but hasn’t been cancelled yet in the system. It’s being cancelled because the pilots have timed out. As soon as that plane got delayed past 10:50pm delta knew it couldn’t fly. Yet they made us wait around for hours. When the flight finally got cancelled all the area hotels were booked and flights for the next day were unavailable until midday. All I wanted was to spend one day with my family before needing to fly abroad on another delta flight. That will be my last flight with them. I’ll take my 800k miles flown and annual spend to an airline that isn’t so thoughtless.

THI IS THE 3RD CONSECUTIVE FLIGHT FROM ORD TO MSP THAT HAS BEEN DELAYED 2+ HOURS. CRAZY

The plane was a rather tired 737-800, with old style small luggage bins. Poor air flow. USB charger in the infotainment system was not functioning. The flight was 2 hours late due to crew rest requirements (not their fault). On arrival in Seattle, waited on the tarmac for 30 minutes with very few updates from the crew.

The crew was very inconsiderate and rude. My flight was scheduled to depart at 6:00am. I received a call from the crew at 5:40am, asking if I was going to make the flight because I was the only one that hasn't boarded yet and boarding ends at 5:50am. I let them know that I will be at the gate in a few minutes, before the 5:50am cutoff. When I arrived at the gate at 5:45am the gate was closed. Departing early on last minute notice without having all passengers on board is inconsiderate and unprofessional.

Very easy to use and convenient, you can perform any action within the same portal

Okay considering we had weather delays which the Pilot notified us of immediately!

The boarding was organized and informative but the plane was tight meaning that you were sitting on one another and extremely uncomfortable. It’s disappointing that can’t have common seating comfort on the plane.

Everything could have benn better. Short fly, no food, no entertainment and no wifi.

Stop changing gates. Stop cancelling flights Stop moving my seat.

Price was crazy watch it if you Chan he your flight

On time, easy boarding. Anytime you sit in an economy seat, it’s uncomfortable. New plane and the bathrooms were in the galley at the back of the plane which seemed odd.

Terrible service - they don’t want to be there and bad food. Entertainment system in economy from the 2000s

No drink service but there was no N/A as an option to choose. Seats were extremely tight. I am under 5.5 and I bumped my knees have no idea how taller people could manage.

Flight delayed, last seat on the plane, no arrival Gate available due to the plane departing late

Kayak booked this flight with only 1h 20min layover in Chicago. This made it impossible for me and several other passengers to reach this flight. Moreover, the gate closed boarding in spite of several passengers still on their way without waiting even one more minute. However, the plane departed with 20min (!) delay, i.e., there would have been at least 15 min time to let the delayed passengers board without causing any delays. I complained and as a "thank you" the attendent booked us on the last (!) flight to Indianapolis ~7h later! Thankfully, I caught the spitefulness and the United customer line rebooked the flight to an earlier flight. Although I can't grade this particular flight since I never had a chance to take it, Kayak made the mistake of a too short layover and the crew at the gate was awful.

Flight did not have wifi service. It was experiencing technical difficulties. Definitely and old plane that needs updating.

Old 757 with poor entertainment system. United no longer partners with United for free text and email. O'Hara an absolute disaster! Limited gates clauses two hour delay. Unfortunately this appears to be the norm.

It was a good experience, unfortunately my checked baggages were come late and not arrived on time.

Very stressful to locate United Airline boarding area, delayed flight, changing boarding area again to another location with all tiredness 😩. But flying was fine.

First class snacks - stewardess gave out multiples to everyone until there was almost no selection left when she got back to me last in first class cabin. Nothing left that I would eat.

My feedback from the trip to Columbia to Chicago was meant for Chicago to Denver.

The WiFi was out gr entire flight. Had to Diane for almost 1 hour to wait for a gate to open up for plane to dock. Very bad experience.

DELAYED AGAIN and AGAIN and AGAIN - not only that, you delay in 20 minute increments for hours and hours instead of having an accurate delay understanding.

AA was fine....the overall experience was subpar, but not due to the airline due to broader issues

No ground air conditioner for the plane. Very hot and humid prior to take off which was an uncomfortable period of time.

Check-in process was poor, very poor, only one person to check-in all passengers, so if one passenger had a check-in issue, all other passengers were delayed. All check-ins should have two airline staff to check-in passengers.

The flight up was great no issues. The flight back home was a cluster. I was told the plane I was waiting on was giving to another flight which caused me to miss my connection flight. Granted the airline did great with getting hotel and vouchr for food.

Flight was delayed and so much of inconvenience related to the gate change.

Nothing was good about this flight. Although the flight actually departed more than 3 hours late, due to “air traffic control management” we pushed back from gate 2 hours and 20 minutes late and proceeded to sit 100 yards from gate for and then n tarmac for another 1/2 hour additional 20 minutes

More options for your flight from Chicago to Idaho

Complete your trip to Idaho with a hotel stay or car rental