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$88+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — CHI
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
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 December 16, 2025.

This American Airlines deal was found by Cheapflights users on 12/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:07 amGEG - ORD
Nonstop3h 50mAmerican Airlines
Sat 1/37:19 pmORD - GEG
Nonstop4h 09mAmerican Airlines
Deal found 12/15$270
This Expedia deal was found by Cheapflights users on 12/16. 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.
Tue 12/3012:02 pmGEG - ORD
1 stop10h 10mMultiple Airlines
Sat 4/186:50 pmORD - GEG
1 stop7h 23mMultiple Airlines
Deal found 12/16$272
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:20 pmBOI - ORD
Nonstop3h 44mUnited Airlines
Tue 1/69:15 amORD - BOI
Nonstop4h 24mUnited Airlines
Deal found 12/15$279
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:00 pmGEG - ORD
1 stop5h 59mUnited Airlines
Sat 1/38:08 pmORD - GEG
Nonstop4h 22mUnited Airlines
Deal found 12/15$280
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:00 amGEG - ORD
1 stop6h 20mDelta
Tue 4/217:25 amORD - GEG
1 stop7h 37mDelta
Deal found 12/16$290
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:00 pmGEG - ORD
1 stop5h 59mUnited Airlines
Sun 1/48:08 pmORD - GEG
Nonstop4h 22mUnited Airlines
Deal found 12/15$297
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:00 amGEG - ORD
1 stop6h 20mDelta
Sun 4/196:59 pmORD - GEG
1 stop6h 36mDelta
Deal found 12/16$307
This Frontier deal was found by Cheapflights users on 12/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:02 pmGEG - ORD
1 stop10h 10mFrontier
Sat 1/37:00 amORD - GEG
1 stop6h 07mFrontier
Deal found 12/16$308
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:20 pmBOI - ORD
Nonstop3h 44mUnited Airlines
Sat 1/37:42 pmORD - BOI
Nonstop4h 17mUnited Airlines
Deal found 12/15$309
This deal was found by Cheapflights users on 12/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1612:55 pmBOI - ORD
1 stop4h 50mDelta
Mon 1/58:50 amORD - BOI
1 stop6h 12mDelta
Deal found 12/14$316
This Frontier deal was found by Cheapflights users on 12/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2112:38 pmBOI - ORD
1 stop10h 34mFrontier
Thu 1/17:00 amORD - BOI
1 stop5h 43mFrontier
Deal found 12/16$318
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2012:20 pmBOI - ORD
Nonstop3h 44mUnited Airlines
Fri 1/29:15 amORD - BOI
Nonstop4h 24mUnited Airlines
Deal found 12/14$326

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 December 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$209
(Kiwi.com)

One-way from

$88
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$438

Good round-trip deal

$412 or less

Good one-way deal

$259 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. 7% potential increase in price ($31 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 December 2025
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).
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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 December 16, 2025.
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

SpokaneChicago

GEG - ORD

GEGORD

Spokane

Tue 3/3

5:00 am-1:11 pm

1 stop6h 11m

Chicago O'Hare Intl

Sat 3/7

5:29 pm-11:59 pm

1 stop8h 30m

$214

SpokaneChicago

GEG - ORD

GEGORD

Spokane

Sat 1/31

12:32 pm-1:10 pm

1 stop22h 38m

Chicago O'Hare Intl

Sat 2/7

8:00 am-12:44 pm

1 stop6h 44m

$214

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

Tue 1/6

3:45 pm-11:59 pm

1 stop7h 14m

Chicago O'Hare Intl

Fri 1/9

3:44 pm-11:42 pm

1 stop8h 58m

$228

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

Mon 1/12

1:55 pm-11:50 pm

1 stop8h 55m

Chicago O'Hare Intl

Thu 1/15

9:00 am-11:42 pm

1 stop15h 42m

$228

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

Sun 1/11

7:45 am-11:37 pm

1 stop14h 52m

Chicago O'Hare Intl

Wed 1/14

6:06 pm-11:59 pm

1 stop6h 53m

$228

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

Wed 2/11

9:02 am-5:10 pm

1 stop7h 08m

Chicago O'Hare Intl

Tue 2/17

3:54 pm-10:40 pm

1 stop7h 46m

$228

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

Mon 1/26

11:35 am-11:50 pm

1 stop11h 15m

Chicago O'Hare Intl

Fri 1/30

3:44 pm-11:42 pm

1 stop8h 58m

$228

SpokaneChicago

GEG - ORD

GEGORD

Spokane

Sat 2/7

1:38 pm-11:50 pm

1 stop8h 12m

Chicago O'Hare Intl

Sun 2/8

8:00 am-12:44 pm

1 stop6h 44m

$231

JacksonChicago

JAC - ORD

JACORD

Jackson Hole

Mon 1/12

4:29 pm-11:59 pm

1 stop6h 30m

Chicago O'Hare Intl

Wed 1/14

9:00 am-11:22 am

Nonstop3h 22m

$247

JacksonChicago

JAC - ORD

JACORD

Jackson Hole

Thu 1/8

1:42 pm-6:15 pm

Nonstop3h 33m

Chicago O'Hare Intl

Sun 1/11

6:54 am-2:42 pm

1 stop8h 48m

$248

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

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 December 16, 2025.

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 at noon, which can drop the price by up to 25% versus a flight in the morning.

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 33m. Alaska Airlines provides one of the quickest options available for as low as $248. The distance from Idaho to Chicago is about 1159 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 Boise Air Term. Gowen Fld - Chicago O'Hare Intl, Spokane - Chicago O'Hare Intl and Boise Air Term. Gowen Fld - 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: United Airlines (86%), Air Canada (81%), Lufthansa( 80%).

  • What are the cheapest flights from Idaho to Chicago?

    Looking for the cheapest flight from Idaho to Chicago? While on average our users pay $825, our data indicates the cheapest price to be $154. The most popular route (Boise Air Term. Gowen Fld - Chicago O'Hare Intl), is priced around $231.

  • 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 December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$134Average$279FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$224Average$353FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$228Average$473FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$233Average$388FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$255Average$388FlexibilityNo cancel feeOn-time71%

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