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$74+ Cheap flights from Idaho to Chicago (CHI)

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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — CHI
Mar 3 — Mar 101
Tue 3/3
Tue 3/10
1 adult, Economy
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Cheap flight deals from Idaho to Chicago

Cheapest flights from Idaho to Chicago
Explore the most affordable flight options available from Idaho to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 1, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/30. 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 3/35:40 am
BOI
-
ORD
1 stop6h 31m
Alaska Airlines
Tue 3/173:54 pm
ORD
-
BOI
1 stop9h 05m
Alaska Airlines
Deal found 1/30$229
This Alaska Airlines deal was found by Cheapflights users on 1/30. 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 2/255:00 am
GEG
-
ORD
1 stop6h 11m
Alaska Airlines
Wed 2/253:54 pm
ORD
-
GEG
1 stop9h 07m
Alaska Airlines
Deal found 1/30$231
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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.
Thu 3/1211:48 am
JAC
-
ORD
1 stop11h 11m
Alaska Airlines
Fri 3/137:40 am
ORD
-
JAC
1 stop29h 44m
Alaska Airlines
Deal found 2/1$233
This Alaska Airlines deal was found by Cheapflights users on 1/30. 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 4/287:41 pm
GEG
-
ORD
1 stop8h 59m
Alaska Airlines
Sat 5/93:52 pm
ORD
-
GEG
1 stop8h 28m
Alaska Airlines
Deal found 1/30$235
This Alaska Airlines deal was found by Cheapflights users on 1/30. 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 2/217:05 am
GEG
-
ORD
1 stop7h 28m
Alaska Airlines
Tue 2/245:29 pm
ORD
-
GEG
1 stop7h 32m
Alaska Airlines
Deal found 1/30$237
This Alaska Airlines deal was found by Cheapflights users on 1/30. 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.
Thu 4/301:34 pm
GEG
-
ORD
1 stop8h 25m
Alaska Airlines
Wed 5/66:00 am
ORD
-
GEG
1 stop9h 23m
Alaska Airlines
Deal found 1/30$242
This Alaska Airlines deal was found by Cheapflights users on 1/30. 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.
Fri 2/207:05 am
GEG
-
ORD
1 stop7h 28m
Alaska Airlines
Wed 2/253:07 pm
ORD
-
GEG
1 stop10h 52m
Alaska Airlines
Deal found 1/30$243
This Alaska Airlines deal was found by Cheapflights users on 1/29. 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.
Fri 2/275:40 am
BOI
-
ORD
1 stop6h 31m
Alaska Airlines
Sun 3/13:07 pm
ORD
-
BOI
1 stop9h 23m
Alaska Airlines
Deal found 1/29$249
This Alaska Airlines deal was found by Cheapflights users on 1/30. 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.
Fri 2/207:05 am
GEG
-
ORD
1 stop7h 28m
Alaska Airlines
Mon 2/233:07 pm
ORD
-
GEG
1 stop10h 52m
Alaska Airlines
Deal found 1/30$249
This Alaska Airlines deal was found by Cheapflights users on 1/31. 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 3/187:54 pm
SUN
-
ORD
1 stop9h 45m
Alaska Airlines
Wed 3/256:00 am
ORD
-
SUN
1 stop14h 12m
Alaska Airlines
Deal found 1/31$251
This Alaska Airlines deal was found by Cheapflights users on 1/31. 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.
Mon 4/272:57 pm
BOI
-
ORD
1 stop8h 02m
Alaska Airlines
Mon 5/48:50 am
ORD
-
BOI
1 stop28h 42m
Alaska Airlines
Deal found 1/31$253
This American Airlines deal was found by Cheapflights users on 1/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:25 pm
GEG
-
ORD
Nonstop3h 43m
American Airlines
Tue 3/109:45 am
ORD
-
GEG
Nonstop3h 59m
American Airlines
Deal found 1/31$255

Find flight deals from Idaho to Chicago

Keep the following information in mind while searching for Idaho to Chicago flight deals. Data was last updated February 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$229
(Alaska Airlines)

One-way from

$74
(Frontier)

Popular in

December

Cheapest in

September

Average price

$328

Good round-trip deal

$388 or less

Good one-way deal

$250 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Chicago (CHI) flights.
Search Deals
From Idaho to Chicago (CHI)
Search Deals
One-way flight from Idaho to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Idaho to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from Idaho to Chicago (CHI).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Chicago 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 February 1, 2026.
Use the filters below to find and compare flights from Idaho to Chicago that are best for you.

Fly from

Idaho

Fly to

Chicago

Route

Depart

Return

Price

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

Sun 3/1

5:40 am-1:11 pm

1 stop6h 31m

Chicago O'Hare Intl

Tue 3/10

7:00 am-3:08 pm

1 stop9h 08m

$229

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

Sat 2/28

6:28 am-4:33 pm

1 stop9h 05m

Chicago O'Hare Intl

Sat 3/7

2:07 pm-11:59 pm

1 stop10h 52m

$229

JacksonChicago

JAC - ORD

JACORD

Jackson Hole

Thu 3/12

11:48 am-11:59 pm

1 stop11h 11m

Chicago O'Hare Intl

Fri 3/13

7:40 am-12:24 pm

1 stop29h 44m

$233

HaileyChicago

SUN - ORD

SUNORD

Hailey Sun Valley-Friedman

Wed 3/18

7:54 pm-6:39 am

1 stop9h 45m

Chicago O'Hare Intl

Wed 3/25

6:00 am-7:12 pm

1 stop14h 12m

$251

SpokaneChicago

GEG - ORD

GEGORD

Spokane

Tue 4/7

1:33 pm-7:28 pm

Nonstop3h 55m

Chicago O'Hare Intl

Tue 5/5

10:41 am-12:42 pm

Nonstop4h 01m

$255

SpokaneChicago

GEG - ORD

GEGORD

Spokane

Mon 2/23

12:00 pm-11:56 pm

1 stop9h 56m

Chicago O'Hare Intl

Thu 2/26

3:07 pm-11:59 pm

1 stop10h 52m

$263

BoiseChicago

BOI - MDW

BOIMDW

Boise Air Term. Gowen Fld

Mon 3/2

1:43 pm-10:31 pm

1 stop7h 48m

Chicago Midway

Mon 3/9

2:05 pm-9:09 pm

1 stop8h 04m

$269

BoiseChicago

BOI - MDW

BOIMDW

Boise Air Term. Gowen Fld

Sat 2/28

8:30 am-2:30 pm

1 stop5h 00m

Chicago Midway

Sat 3/7

8:10 pm-1:55 am

1 stop6h 45m

$269

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

Wed 7/1

5:45 pm-12:44 am

1 stop5h 59m

Chicago O'Hare Intl

Sat 7/4

3:47 pm-10:04 pm

1 stop7h 17m

$269

BoiseChicago

BOI - MDW

BOIMDW

Boise Air Term. Gowen Fld

Tue 3/3

7:45 am-4:45 pm

1 stop8h 00m

Chicago Midway

Tue 3/17

5:35 pm-10:20 pm

1 stop5h 45m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/31

Showing 1-10 of 60 results
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Best time to book a flight from Idaho to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Idaho 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 Idaho to Chicago

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

Currently, May is the cheapest month in which you can book a flight from Idaho to Chicago (average of $87). Flying from Idaho to Chicago in November is currently the most expensive (average of $288). 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 ID to CHI?

Find hourly flight availability from Idaho to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 1, 2026.

When flying from Idaho to Chicago, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 44% versus a flight in the evening.

Weekly flight availability from Idaho to Chicago

Explore weekly flight availability from Idaho to Chicago. 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 February 1, 2026.

The most flights from USID to CHI are scheduled on a Monday (8 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 on average).

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

Related info for your journey

Find useful and relevant information for your journey from Idaho to Chicago. 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 Idaho to Chicago?

    A quick flight from Idaho to Chicago can take about 3h 50m. Alaska Airlines provides one of the quickest options available for as low as $265. The distance from Idaho to Chicago is about 1493 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as $87 on Alaska Airlines. Other airlines that offer cheap prices include Delta from $87 and American Airlines from $117 one-way.

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

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

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

    Before booking your flight to Chicago from Idaho, check out the most reliable airlines to get you to your destination on time: Lufthansa (87%), SkyWest Airlines (81%), Air Canada( 81%).

  • What are the cheapest flights from Idaho to Chicago?

    Looking for the cheapest flight from Idaho to Chicago? While on average our users pay $1,230, our data indicates the cheapest price to be $154. The most popular route (Spokane - Chicago O'Hare Intl), is priced around $256.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho to Chicago 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 Idaho to Chicago?

    Currently, May is the cheapest month in which you can book a flight from Idaho to Chicago (average of $87). Flying from Idaho to Chicago in November is currently the most expensive (average of $288). 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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lansing
Merrillville
Hammond
Porter
Benton Harbor

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Alternative routes for Idaho to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Idaho to Chicago

Discover the top 5 airlines that operate flights from Idaho to Chicago. 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 February 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$87Average$291FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$219Average$470FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$233Average$385FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$249Average$385FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$260Average$353FlexibilityNo cancel feeOn-time75%

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