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$91+ Cheap flights from Boise (BOI) 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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — CHI
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Chicago are usually found in January or February, booked 89 days in advance, depart on a Saturday or Friday and return on a Saturday

Cheap flight deals from Boise to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 12, 2025.

Round-trip from

$191
(Cheapflightsfares)

One-way from

$91
(Delta)

Popular in

December

Cheapest in

January

Average price

$372

Good round-trip deal

$349 or less

Good one-way deal

$179 or less
From Boise Air Term. Gowen Fld to Chicago (CHI)
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One-way flight from Boise Air Term. Gowen Fld to Chicago (CHI)
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Highest demand for flights based on searches. 4% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Boise Air Term. Gowen Fld to Chicago (CHI).
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Price to beat on a one-way flight from Boise Air Term. Gowen Fld to Chicago (CHI).
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Find flight deals from Boise to Chicago

Cheapest flights from Boise to Chicago
Explore the most affordable flight options available from Boise to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/29:49 pmBOI - ORD
1 stop15h 27mSpirit Airlines
lun. 10/66:00 amORD - BOI
1 stop15h 44mSpirit Airlines
Deal found 6/11$189
This Delta deal was found by Cheapflights users on 6/10. 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.
vie. 10/311:30 pmBOI - ORD
1 stop8h 04mDelta
sáb. 10/117:30 amORD - BOI
1 stop9h 59mDelta
Deal found 6/10$195
This Delta deal was found by Cheapflights users on 6/10. 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.
sáb. 7/125:40 amBOI - MDW
1 stop6h 26mDelta
sáb. 7/199:25 amMDW - BOI
2 stops8h 40mDelta
Deal found 6/10$200
This Hawaiian Airlines deal was found by Cheapflights users on 6/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/54:00 pmBOI - ORD
1 stop6h 39mHawaiian Airlines
mié. 8/66:00 amORD - BOI
1 stop10h 04mHawaiian Airlines
Deal found 6/11$229
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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.
jue. 10/24:00 pmBOI - ORD
1 stop12h 00mAlaska Airlines
mar. 10/78:20 amORD - BOI
1 stop15h 51mAlaska Airlines
Deal found 6/9$253
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/77:08 pmBOI - ORD
1 stop21h 09mMultiple Airlines
lun. 8/183:21 pmORD - BOI
1 stop6h 23mMultiple Airlines
Deal found 6/10$262
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/2612:36 pmBOI - ORD
1 stop10h 23mFrontier
dom. 6/295:40 amORD - BOI
1 stop7h 07mFrontier
Deal found 6/11$270
This American Airlines deal was found by Cheapflights users on 6/12. 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.
sáb. 8/301:07 pmBOI - ORD
Nonstop3h 33mAmerican Airlines
mar. 9/29:40 amORD - BOI
Nonstop3h 39mAmerican Airlines
Deal found 6/12$274
This United Airlines deal was found by Cheapflights users on 6/11. 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.
sáb. 7/127:15 pmBOI - ORD
1 stop9h 24mUnited Airlines
sáb. 7/198:45 amORD - BOI
Nonstop3h 58mUnited Airlines
Deal found 6/11$277
This Southwest deal was found by Cheapflights users on 6/10. 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.
sáb. 7/1212:55 pmBOI - MDW
Nonstop3h 20mSouthwest
sáb. 7/197:50 amMDW - BOI
Nonstop3h 40mSouthwest
Deal found 6/10$290
This Southwest deal was found by Cheapflights users on 6/12. 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.
jue. 10/21:05 pmBOI - ORD
2 stops9h 00mSouthwest
mar. 10/712:40 pmORD - BOI
2 stops10h 30mSouthwest
Deal found 6/12$363
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/2212:36 pmBOI - MDW
1 stop22h 04mFrontier
sáb. 6/282:44 pmMDW - BOI
1 stop22h 03mFrontier
Deal found 6/12$406

Cheapflights Fare Finder

Customize your flight search to find flights from Boise 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 junio 12, 2025.
Use the filters below to find and compare flights from Boise to Chicago that are best for you.

Fly from

Boise

Fly to

Chicago

Route

Depart

Return

Price

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

sáb. 9/6

9:49 pm-2:16 pm

1 stop15h 27m

Chicago O'Hare Intl

sáb. 9/13

6:00 am-8:44 pm

1 stop15h 44m

$191

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

mar. 7/15

4:20 pm-11:56 pm

1 stop6h 36m

Chicago O'Hare Intl

mar. 7/22

7:20 pm-12:09 am

1 stop5h 49m

$195

BoiseChicago

BOI - MDW

BOIMDW

Boise Air Term. Gowen Fld

sáb. 7/12

5:40 am-1:06 pm

1 stop6h 26m

Chicago Midway

sáb. 7/19

9:25 am-5:05 pm

2 stops8h 40m

$200

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

mar. 8/5

4:00 pm-11:39 pm

1 stop6h 39m

Chicago O'Hare Intl

mié. 8/6

6:00 am-3:04 pm

1 stop10h 04m

$229

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

jue. 8/7

7:08 pm-5:17 pm

1 stop21h 09m

Chicago O'Hare Intl

lun. 8/18

3:21 pm-8:44 pm

1 stop6h 23m

$262

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

lun. 9/1

5:45 pm-10:04 pm

1 stop27h 19m

Chicago O'Hare Intl

mar. 9/9

10:00 am-5:18 pm

1 stop8h 18m

$264

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

jue. 6/26

12:36 pm-11:59 pm

1 stop10h 23m

Chicago O'Hare Intl

dom. 6/29

5:40 am-11:47 am

1 stop7h 07m

$270

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

sáb. 8/30

1:07 pm-5:40 pm

Nonstop3h 33m

Chicago O'Hare Intl

mar. 9/2

9:40 am-12:19 pm

Nonstop3h 39m

$274

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

sáb. 7/12

7:15 pm-5:39 am

1 stop9h 24m

Chicago O'Hare Intl

sáb. 7/19

8:45 am-11:43 am

Nonstop3h 58m

$277

BoiseChicago

BOI - MDW

BOIMDW

Boise Air Term. Gowen Fld

sáb. 7/12

12:55 pm-5:15 pm

Nonstop3h 20m

Chicago Midway

sáb. 7/19

7:50 am-10:30 am

Nonstop3h 40m

$290

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 25 results
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Best time to book a flight from Boise to Chicago

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

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

Use this chart to determine the optimal time to book a round-trip flight from Boise to Chicago. Price data was last updated on June 9, 2025.

To ensure you get the cheapest price possible for a flight from Boise to Chicago, you should look to book at least 88 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from Boise to Chicago (average of $245). Flying from Boise to Chicago in March is currently the most expensive (average of $321). 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 BOI to CHI?

Find hourly flight availability from Boise 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 junio 12, 2025.

It’s typically best to fly out from Boise to Chicago in the evening. Doing so could potentially save you 61% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Boise to Chicago?

Use this chart to determine the cheapest time to fly round-trip from Boise to Chicago. Price data was last updated on June 30, 2024.

Travelers seeking maximum savings on their Boise to Chicago flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Boise to Chicago

Explore weekly flight availability from Boise 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 junio 12, 2025.

The most flights from BOI to CHI are scheduled on a Monday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Chicago by month

Plan your trip to Chicago by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated junio 12, 2025.
Read through reviews of airlines operating flights from Boise to Chicago, such as Alaska Airlines, Southwest and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

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

  • What airport do you fly from for flights from Boise to Chicago?

    If you book a flight to Chicago from Boise, you will be flying from Air Term. Gowen Fld, which is the city’s only airport. Boise Air Term. Gowen Fld (BOI) is located 3.3 mi from the center of Boise. There are 9 flights from Air Term. Gowen Fld to Chicago per day from 5 different airlines.

  • What are the cheapest airlines flying from Boise to Chicago round-trip?

    Our cheapest airline available from Boise to Chicago is Spirit Airlines. Our recent data shows that you can find tickets from as low as $191 on this airline. Additional options worth looking into are Delta and Hawaiian Airlines, starting at $195 and $229 round-trip. Users have found that Spirit Airlines is 49% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $91. Spirit Airlines flights start at $95 while deals on Southwest start at $96 one-way.

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

    No one likes to see their flight delayed. When booking a flight from Boise to Chicago consider choosing SkyWest Airlines (92%), Air Canada (91%) or Lufthansa (91%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Boise to Chicago?

    The cheapest flight price from Boise to Chicago is $167. On average you can expect to pay $1,292. The most popular route, (Boise Air Term. Gowen Fld - Chicago O'Hare Intl), can usually be booked for $182.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Boise to Chicago (average of $245). Flying from Boise to Chicago in March is currently the most expensive (average of $321). 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 Boise?

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

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Alternative routes for Boise 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 Boise to Chicago

Discover the top 5 airlines that operate flights from Boise 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$156Average$298FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$196Average$382FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$217Average$327FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$248Average$500FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$258Average$368FlexibilityNo cancel feeOn-time63%

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