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$125+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — CHI
Jul 23 — Jul 301
Thu 7/23
Thu 7/30
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 June 23, 2026.

This United Airlines deal was found by Cheapflights users on 6/19. 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 12/22:35 pm
IDA
-
ORD
1 stop7h 44m
United Airlines
Sat 12/55:00 am
ORD
-
IDA
1 stop5h 28m
United Airlines
Deal found 6/19$291
This Delta deal was found by Cheapflights users on 6/19. 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 9/96:00 am
IDA
-
ORD
1 stop4h 55m
Delta
Wed 9/1612:40 pm
ORD
-
IDA
2 stops10h 51m
Delta
Deal found 6/19$296
This American Airlines deal was found by Cheapflights users on 6/20. 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 8/122:27 pm
GEG
-
ORD
Nonstop4h 01m
American Airlines
Wed 9/211:30 am
ORD
-
GEG
Nonstop4h 07m
American Airlines
Deal found 6/20$297
This Alaska Airlines deal was found by Cheapflights users on 6/21. 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 10/277:16 am
GEG
-
ORD
1 stop9h 37m
Alaska Airlines
Sat 10/312:21 pm
ORD
-
GEG
1 stop9h 19m
Alaska Airlines
Deal found 6/21$301
This Delta deal was found by Cheapflights users on 6/19. 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.
Sat 12/56:45 pm
IDA
-
ORD
2 stops12h 49m
Delta
Tue 12/811:10 am
ORD
-
IDA
2 stops12h 09m
Delta
Deal found 6/19$301
This American Airlines deal was found by Cheapflights users on 6/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/82:27 pm
GEG
-
ORD
Nonstop4h 01m
American Airlines
Tue 8/2511:30 am
ORD
-
GEG
Nonstop4h 07m
American Airlines
Deal found 6/18$309
This Priceline deal was found by Cheapflights users on 6/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:15 am
GEG
-
ORD
1 stop8h 42m
Alaska Airlines
Wed 8/122:20 pm
ORD
-
GEG
1 stop10h 47m
Alaska Airlines
Deal found 6/19$315
This Delta deal was found by Cheapflights users on 6/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:45 pm
IDA
-
ORD
2 stops12h 49m
Delta
Sat 12/57:30 am
ORD
-
IDA
1 stop5h 57m
Delta
Deal found 6/18$315
This Southwest deal was found by Cheapflights users on 6/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/54:55 pm
GEG
-
MDW
1 stop10h 05m
Southwest
Wed 8/123:50 pm
MDW
-
GEG
1 stop8h 35m
Southwest
Deal found 6/22$317
This Delta deal was found by Cheapflights users on 6/21. 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 8/126:16 am
GEG
-
ORD
1 stop9h 24m
Delta
Wed 9/29:30 am
ORD
-
GEG
1 stop8h 06m
Delta
Deal found 6/21$317
This American Airlines deal was found by Cheapflights users on 6/22. 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.
Thu 8/273:38 pm
JAC
-
ORD
Nonstop3h 27m
American Airlines
Sun 8/3012:59 pm
ORD
-
JAC
Nonstop3h 18m
American Airlines
Deal found 6/22$319
This American Airlines deal was found by Cheapflights users on 6/21. 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.
Sat 8/222:27 pm
GEG
-
ORD
Nonstop4h 01m
American Airlines
Thu 8/276:59 am
ORD
-
GEG
1 stop9h 10m
American Airlines
Deal found 6/21$319

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 June 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$291
(United Airlines)

One-way from

$125
(Frontier)

Popular in

March

Cheapest in

February

Average price

$412

Good round-trip deal

$400 or less

Good one-way deal

$279 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. 6% potential increase in price ($29 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 June 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 June 23, 2026.
Use the filters below to find and compare flights from Idaho to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Idaho FallsChicago

IDA - ORD

IDAORD

Idaho Falls Fanning Field

Sat 12/5

6:45 pm-8:34 am

2 stops12h 49m

Chicago O'Hare Intl

Tue 12/8

11:10 am-10:19 pm

2 stops12h 09m

$301

SpokaneChicago

GEG - ORD

GEGORD

Spokane

Wed 8/12

5:15 am-1:23 pm

1 stop6h 08m

Chicago O'Hare Intl

Wed 9/2

9:30 am-3:36 pm

1 stop8h 06m

$317
Quickest round-trip

JacksonChicago

JAC - ORD

JACORD

Jackson Hole

Thu 8/27

3:38 pm-8:05 pm

Nonstop3h 27m

Chicago O'Hare Intl

Sun 8/30

12:59 pm-3:17 pm

Nonstop3h 18m

$319

JacksonChicago

JAC - ORD

JACORD

Jackson Hole

Thu 8/27

4:25 pm-11:59 pm

1 stop6h 34m

Chicago O'Hare Intl

Sun 8/30

4:20 pm-6:41 pm

Nonstop3h 21m

$329

SpokaneChicago

GEG - ORD

GEGORD

Spokane

Sat 8/22

6:45 am-3:30 pm

1 stop6h 45m

Chicago O'Hare Intl

Thu 8/27

3:25 pm-11:53 pm

2 stops10h 28m

$334

SpokaneChicago

GEG - ORD

GEGORD

Spokane

Fri 10/9

4:38 pm-6:20 am

1 stop11h 42m

Chicago O'Hare Intl

Tue 10/13

6:00 am-11:39 am

1 stop7h 39m

$338

SpokaneChicago

GEG - ORD

GEGORD

Spokane

Fri 8/14

8:15 am-6:57 pm

1 stop8h 42m

Chicago O'Hare Intl

Sat 8/15

7:17 pm-11:59 pm

1 stop6h 42m

$338

JacksonChicago

JAC - ORD

JACORD

Jackson Hole

Wed 8/5

3:47 pm-5:00 am

1 stop12h 13m

Chicago O'Hare Intl

Wed 8/12

7:20 am-1:31 pm

1 stop7h 11m

$339

Idaho FallsChicago

IDA - ORD

IDAORD

Idaho Falls Fanning Field

Tue 9/29

5:51 pm-11:59 pm

1 stop5h 08m

Chicago O'Hare Intl

Sat 10/3

5:00 am-9:53 am

1 stop5h 53m

$343

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

Wed 8/12

8:00 pm-1:21 pm

1 stop16h 21m

Chicago O'Hare Intl

Wed 8/19

6:01 am-2:02 pm

1 stop9h 01m

$345

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/18

Showing 1-10 of 60 resultsSorted by cheapest first
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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, August is the cheapest month in which you can book a flight from Idaho to Chicago (average of $115). Flying from Idaho to Chicago in March is currently the most expensive (average of $268). 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 June 23, 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 at noon, which can drop the price by up to 22% versus a flight in the morning.

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 June 23, 2026.

The most flights from USID to CHI are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

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

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

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from Idaho to Chicago. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 4h 01m. American Airlines provides one of the quickest options available for as low as $297. 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 $114 on Alaska Airlines. Other airlines that offer cheap prices include Delta from $117 and Southwest from $129 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: SkyWest Airlines (87%), United Airlines (84%), Air Canada( 75%).

  • What are the cheapest flights from Idaho to Chicago?

    Looking for the cheapest flight from Idaho to Chicago? While on average our users pay $951, our data indicates the cheapest price to be $180. The most popular route (Boise Air Term. Gowen Fld - Chicago O'Hare Intl), is priced around $306.

  • 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, August is the cheapest month in which you can book a flight from Idaho to Chicago (average of $115). Flying from Idaho to Chicago in March is currently the most expensive (average of $268). 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
Benton Harbor
Lansing
Merrillville
Hammond
Porter

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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 June 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$228Average$414FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$234Average$395FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$243Average$454FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$269Average$404FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$298Average$390FlexibilityNo cancel feeOn-time75%

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