HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$115+ Cheap flights from Chicago (CHI) to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BOI
Apr 18 — Apr 251
Sat 4/18
Sat 4/25
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to Idaho with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Chicago to Idaho

Cheapest flights from Chicago to Idaho
Explore the most affordable flight options available from Chicago to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 19, 2026.

This Expedia deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/293:52 pm
ORD
-
GEG
1 stop8h 28m
Multiple Airlines
Wed 5/612:33 pm
GEG
-
ORD
1 stop6h 04m
Multiple Airlines
Deal found 3/17$249
This Trip.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:00 am
ORD
-
BOI
1 stop7h 22m
Multiple Airlines
Sat 4/252:57 pm
BOI
-
ORD
1 stop8h 02m
Multiple Airlines
Deal found 3/15$260
This CheapOair deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/83:29 pm
ORD
-
BOI
1 stop20h 39m
Frontier
Sun 4/1212:03 pm
BOI
-
ORD
1 stop24h 16m
Frontier
Deal found 3/17$261
This Expedia deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/58:00 am
ORD
-
BOI
1 stop8h 33m
Multiple Airlines
Sun 5/101:22 pm
BOI
-
ORD
1 stop6h 15m
Multiple Airlines
Deal found 3/18$273
This Expedia deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:48 pm
ORD
-
BOI
1 stop13h 54m
Multiple Airlines
Tue 5/121:22 pm
BOI
-
ORD
1 stop6h 15m
Multiple Airlines
Deal found 3/15$275
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:00 am
ORD
-
BOI
1 stop7h 35m
Alaska Airlines
Tue 4/286:00 am
BOI
-
ORD
1 stop9h 56m
Alaska Airlines
Deal found 3/16$277
This Alaska Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:52 pm
ORD
-
GEG
1 stop7h 19m
Alaska Airlines
Sat 5/27:41 pm
GEG
-
ORD
1 stop8h 59m
Alaska Airlines
Deal found 3/15$277
This Expedia deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/154:10 pm
ORD
-
BOI
1 stop8h 37m
Alaska Airlines
Wed 4/226:00 am
BOI
-
ORD
1 stop9h 56m
Alaska Airlines
Deal found 3/16$280
This Expedia deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/184:10 pm
ORD
-
GEG
1 stop9h 49m
Alaska Airlines
Sat 4/252:45 pm
GEG
-
ORD
1 stop7h 14m
Alaska Airlines
Deal found 3/15$280
This CheapOair deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/239:42 pm
ORD
-
BOI
1 stop15h 48m
Frontier
Tue 5/261:25 pm
BOI
-
ORD
1 stop6h 12m
Frontier
Deal found 3/15$281
This Expedia deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:00 am
ORD
-
BOI
1 stop7h 35m
Alaska Airlines
Fri 5/15:56 pm
BOI
-
ORD
1 stop18h 17m
Alaska Airlines
Deal found 3/15$283
This Alaska Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/93:52 pm
ORD
-
GEG
1 stop8h 28m
Alaska Airlines
Sat 5/167:01 am
GEG
-
ORD
1 stop9h 49m
Alaska Airlines
Deal found 3/14$283

Find flight deals from Chicago to Idaho

Keep the following information in mind while searching for Chicago to Idaho flight deals. Data was last updated March 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$249
(Expedia)

One-way from

$115
(Gotogate)

Popular in

June

Cheapest in

February

Average price

$397

Good round-trip deal

$281 or less

Good one-way deal

$239 or less
Provider with most accurate pricing for Chicago (CHI)-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Boise Air Term. Gowen Fld flights.
Search Deals
From Chicago (CHI) to Idaho
Search Deals
One-way flight from Chicago (CHI) to Idaho
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to Idaho.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to Idaho.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 19, 2026.
Use the filters below to find and compare flights from Chicago to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Sat 4/18

6:00 am-12:22 pm

1 stop7h 22m

Boise Air Term. Gowen Fld

Sat 4/25

2:57 pm-11:59 pm

1 stop8h 02m

$277

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

Tue 4/28

5:52 pm-11:11 pm

1 stop7h 19m

Spokane

Sat 5/2

2:45 pm-11:59 pm

1 stop7h 14m

$277

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Wed 4/15

4:10 pm-11:47 pm

1 stop8h 37m

Boise Air Term. Gowen Fld

Wed 4/22

2:57 pm-11:59 pm

1 stop8h 02m

$300

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

Sat 5/2

3:52 pm-10:20 pm

1 stop8h 28m

Spokane

Tue 5/5

10:30 am-1:13 pm

1 stop24h 43m

$303

ChicagoWest Yellowstone

ORD - WYS

ORDWYS

Chicago O'Hare Intl

Tue 6/9

6:00 am-1:32 pm

1 stop8h 32m

West Yellowstone

Sat 6/13

5:45 pm-12:44 am

1 stop5h 59m

$312

ChicagoSpokane

MDW - GEG

MDWGEG

Chicago Midway

Wed 4/29

7:30 am-1:45 pm

1 stop8h 15m

Spokane

Wed 5/6

5:10 am-2:10 pm

1 stop7h 00m

$317

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

Wed 6/3

5:41 pm-11:35 pm

2 stops7h 54m

Spokane

Wed 6/10

7:21 pm-7:26 am

2 stops10h 05m

$327

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Sat 4/11

6:00 am-1:58 pm

1 stop8h 58m

Boise Air Term. Gowen Fld

Sat 4/18

11:58 am-11:59 pm

1 stop11h 01m

$327

ChicagoSpokane

MDW - GEG

MDWGEG

Chicago Midway

Wed 5/20

6:30 am-10:15 am

1 stop5h 45m

Spokane

Sat 5/23

4:50 pm-6:00 am

1 stop11h 10m

$331

ChicagoSpokane

MDW - GEG

MDWGEG

Chicago Midway

Sat 5/2

9:46 am-1:04 pm

1 stop5h 18m

Spokane

Mon 5/4

10:40 pm-9:56 am

1 stop9h 16m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/15

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Chicago to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Chicago to Idaho?

Currently, July is the cheapest month in which you can book a flight from Chicago to Idaho (average of $158). Flying from Chicago to Idaho in March is currently the most expensive (average of $383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to ID?

Find hourly flight availability from Chicago to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 19, 2026.

It’s typically best to fly out from Chicago to Idaho at noon. Doing so could potentially save you 27% on the flight price compared to flying in the afternoon, which is usually more expensive.

Weekly flight availability from Chicago to Idaho

Explore weekly flight availability from Chicago to Idaho. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 19, 2026.

The most flights from CHI to USID are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

How much does it cost to fly round-trip from Chicago to Idaho?

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated March 19, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta from Chicago to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,319 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,319 reviews
Southwest
8.0
Very good
4,319 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Alaska Airlines
7.9
Good
12,072 reviews
Southwest
8.0
Very good
4,319 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,293 reviews
Southwest
8.0
Very good
4,319 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,439 reviews
Southwest
8.0
Very good
4,319 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,473 reviews
Southwest
8.0
Very good
4,319 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago to Idaho?

    Departing from Chicago to Idaho will take you 3h 42m. The distance between Chicago and Idaho is about 1225 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Chicago to Idaho one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $87. Users have also found prices from $114 and $127 on Alaska Airlines and United Airlines, respectively.

  • What are the most popular routes from Chicago to Idaho?

    The most popular flight routes from Chicago to Idaho are Chicago O'Hare Intl - Jackson Hole, Chicago O'Hare Intl - Boise Air Term. Gowen Fld and Chicago O'Hare Intl - Spokane.

  • What are the most reliable airlines from Chicago to Idaho?

    The top 3 most reliable airlines when flying from Chicago to Idaho are American Airlines (66%), Envoy Air (66%) and Air Canada (59%).

  • What are the cheapest flights from Chicago to Idaho?

    Looking at all options, your cheapest flight can be booked for $154. While the most popular route (Chicago O'Hare Intl - Jackson Hole) can be booked for $329 on average, our data indicates $328 when flying from Chicago to Idaho.

  • Can I find deals for flights from Chicago to Idaho that include hotel bookings?

    Yes. In addition to deals on Chicago to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Idaho.

  • Can I find deals for business class flights from Chicago to Idaho?

    Yes. Cheapflights offers flight deals from Chicago to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Idaho?

    Currently, July is the cheapest month in which you can book a flight from Chicago to Idaho (average of $158). Flying from Chicago to Idaho in March is currently the most expensive (average of $383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to Sky Harbor Intl flights
O'Hare Intl to Orlando flights
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to Dallas/Fort Worth flights
O'Hare Intl to Miami flights
O'Hare Intl to Seattle flights
O'Hare Intl to Denver flights
O'Hare Intl to Newark flights
O'Hare Intl to San Francisco flights
O'Hare Intl to LaGuardia flights
O'Hare Intl to Tampa flights
O'Hare Intl to San Diego flights
O'Hare Intl to New Orleans flights
Midway to Orlando flights
Midway to Sky Harbor Intl flights
O'Hare Intl to Hobby flights
O'Hare Intl to Ontario flights
Midway to Las Vegas flights
O'Hare Intl to Atlanta flights
Midway to Dallas/Fort Worth flights
O'Hare Intl to Boston flights
O'Hare Intl to Nashville flights
O'Hare Intl to Philadelphia flights
O'Hare Intl to Austin flights
O'Hare Intl to Dulles Intl flights
O'Hare Intl to Reagan-National flights
O'Hare Intl to Baltimore flights
Midway to Los Angeles flights
Midway to Miami flights
O'Hare Intl to Santa Ana flights
Midway to Fort Lauderdale flights
O'Hare Intl to Fort Myers flights
O'Hare Intl to George Bush Intcntl flights
Midway to New Orleans flights
St. Louis to Las Vegas flights
Midway to Atlanta flights
O'Hare Intl to Love Field flights
Midway to John F Kennedy Intl flights
O'Hare Intl to Charlotte flights
O'Hare Intl to Charleston flights
O'Hare Intl to Honolulu flights
Midway to LaGuardia flights
Midway to Tampa flights
O'Hare Intl to Savannah flights
O'Hare Intl to Portland flights
O'Hare Intl to Burbank flights
O'Hare Intl to Sarasota flights

Top 4 airlines flying from Chicago to Idaho

Discover the top 4 airlines that operate flights from Chicago to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$174Average$327FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$431FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$254Average$368FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$255Average$382FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights