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$78+ Cheap flights from Illinois to Boise (BOI)

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BOI
abr. 2 — abr. 91
mié. 4/2
mié. 4/9
1 adult, Economy
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Cheap flight deals from Illinois to Boise

Keep the following information in mind while searching for Illinois to Boise flight deals. Data was last updated marzo 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$230
(American Airlines)

One-way from

$78
(Southwest)

Popular in

November

Cheapest in

September

Average price

$477

Good round-trip deal

$324 or less

Good one-way deal

$124 or less
Provider with most accurate pricing for Chicago (CHI)-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Boise Air Term. Gowen Fld flights.
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From Illinois to Boise Air Term. Gowen Fld
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One-way flight from Illinois to Boise Air Term. Gowen Fld
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Highest demand for flights based on searches. 8% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Illinois to Boise Air Term. Gowen Fld.
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Price to beat on a one-way flight from Illinois to Boise Air Term. Gowen Fld.
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Find flight deals from Illinois to Boise

Cheapest flights from Illinois to Boise
Explore the most affordable flight options available from Illinois to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 28, 2025.

This American Airlines deal was found by Cheapflights users on 3/27. 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. 8/162:46 pmORD - BOI
1 stop7h 30mAmerican Airlines
mar. 8/191:20 pmBOI - ORD
Nonstop3h 35mAmerican Airlines
Deal found 3/27$230
This Delta deal was found by Cheapflights users on 3/27. 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.
mar. 5/67:00 pmMDW - BOI
1 stop6h 03mDelta
mar. 5/135:35 amBOI - MDW
1 stop6h 40mDelta
Deal found 3/27$232
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
mié. 9/33:15 pmORD - BOI
1 stop9h 44mAlaska Airlines
mié. 9/175:44 pmBOI - ORD
1 stop10h 56mAlaska Airlines
Deal found 3/27$234
This Delta deal was found by Cheapflights users on 3/27. 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.
mar. 4/228:50 amORD - BOI
1 stop6h 45mDelta
dom. 4/275:50 amBOI - ORD
1 stop6h 29mDelta
Deal found 3/27$237
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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.
dom. 9/148:00 amORD - BOI
1 stop7h 55mHawaiian Airlines
jue. 9/189:03 pmBOI - ORD
1 stop7h 37mHawaiian Airlines
Deal found 3/27$238
This United Airlines deal was found by Cheapflights users on 3/27. 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.
dom. 5/45:05 amORD - BOI
1 stop5h 49mUnited Airlines
mar. 5/65:00 amBOI - ORD
1 stop5h 34mUnited Airlines
Deal found 3/27$247
This Booking.com deal was found by Cheapflights users on 3/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/119:02 pmORD - BOI
1 stop15h 19mMultiple Airlines
dom. 5/182:27 pmBOI - ORD
1 stop8h 14mMultiple Airlines
Deal found 3/27$276
This Southwest deal was found by Cheapflights users on 3/27. 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. 6/58:00 pmMDW - BOI
1 stop5h 30mSouthwest
jue. 6/124:10 pmBOI - MDW
1 stop7h 20mSouthwest
Deal found 3/27$287
This Mytrip deal was found by Cheapflights users on 3/27. 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. 5/111:53 amORD - BOI
2 stops26h 04mSpirit Airlines
vie. 5/912:16 pmBOI - ORD
1 stop16h 09mSpirit Airlines
Deal found 3/27$292
This United Airlines deal was found by Cheapflights users on 3/27. 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.
jue. 4/105:21 pmPIA - BOI
1 stop6h 28mUnited Airlines
lun. 4/142:38 pmBOI - PIA
1 stop5h 13mUnited Airlines
Deal found 3/27$319
This Southwest deal was found by Cheapflights users on 3/27. 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.
vie. 4/185:25 pmORD - BOI
1 stop7h 30mSouthwest
vie. 4/255:05 amBOI - ORD
2 stops8h 55mSouthwest
Deal found 3/27$332
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
sáb. 9/133:17 pmSTL - BOI
1 stop9h 42mAlaska Airlines
sáb. 9/204:29 pmBOI - STL
1 stop6h 30mAlaska Airlines
Deal found 3/27$336

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Boise 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 marzo 28, 2025.
Use the filters below to find and compare flights from Illinois to Boise that are best for you.

Fly from

Illinois

Fly to

Boise

Route

Depart

Return

Price

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

sáb. 8/16

2:46 pm-9:16 pm

1 stop7h 30m

Boise Air Term. Gowen Fld

mar. 8/19

1:20 pm-5:55 pm

Nonstop3h 35m

$230

ChicagoBoise

MDW - BOI

MDWBOI

Chicago Midway

mar. 5/6

7:00 pm-12:03 am

1 stop6h 03m

Boise Air Term. Gowen Fld

mar. 5/13

5:35 am-1:15 pm

1 stop6h 40m

$232

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

mié. 9/3

3:15 pm-11:59 pm

1 stop9h 44m

Boise Air Term. Gowen Fld

mié. 9/17

5:44 pm-5:40 am

1 stop10h 56m

$234

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

mar. 4/22

8:50 am-2:35 pm

1 stop6h 45m

Boise Air Term. Gowen Fld

dom. 4/27

5:50 am-1:19 pm

1 stop6h 29m

$237

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

dom. 9/14

8:00 am-2:55 pm

1 stop7h 55m

Boise Air Term. Gowen Fld

jue. 9/18

9:03 pm-5:40 am

1 stop7h 37m

$238

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

dom. 5/4

5:05 am-9:54 am

1 stop5h 49m

Boise Air Term. Gowen Fld

mar. 5/6

5:00 am-11:34 am

1 stop5h 34m

$247

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

dom. 5/11

9:02 pm-11:21 am

1 stop15h 19m

Boise Air Term. Gowen Fld

dom. 5/18

2:27 pm-11:41 pm

1 stop8h 14m

$276

ChicagoBoise

MDW - BOI

MDWBOI

Chicago Midway

jue. 6/5

8:00 pm-12:30 am

1 stop5h 30m

Boise Air Term. Gowen Fld

jue. 6/12

4:10 pm-12:30 am

1 stop7h 20m

$287

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

jue. 5/1

11:53 am-12:57 pm

2 stops26h 04m

Boise Air Term. Gowen Fld

vie. 5/9

12:16 pm-5:25 am

1 stop16h 09m

$292

PeoriaBoise

PIA - BOI

PIABOI

Greater Peoria

jue. 4/10

5:21 pm-10:49 pm

1 stop6h 28m

Boise Air Term. Gowen Fld

lun. 4/14

2:38 pm-8:51 pm

1 stop5h 13m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 40 results
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Best time to book a flight from Illinois to Boise

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

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

Currently, October is the cheapest month in which you can book a flight from Illinois to Boise (average of $314). Flying from Illinois to Boise in June is currently the most expensive (average of $421). 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 IL to BOI?

Find hourly flight availability from Illinois to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated marzo 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Boise as you normally would.

Rainfall in Boise by month

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

In terms of precipitation, rainfall in Boise ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Boise when rainfall is around 0.2 in.

Temperature in Boise by month

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

If weather is an important factor for your trip to Boise, 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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. 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 Boise. Reviews last updated marzo 28, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Illinois to Boise to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,335 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Boise. 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 into for flights to Boise from Illinois?

    Boise Air Term. Gowen Fld (BOI), located 3.3 mi from the city center, is the airport you fly into when you book flights from Illinois to Boise.

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

    $78 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and Spirit Airlines, with prices starting from $78 and $81, respectively.

  • What are the most popular routes from Illinois to Boise?

    The most popular route from Illinois to Boise is Chicago O'Hare Intl - Boise Air Term. Gowen Fld. You may also consider Chicago Midway - Boise Air Term. Gowen Fld or Lambert-St Louis - Boise Air Term. Gowen Fld.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Boise on time: Lufthansa (100%), SkyWest Airlines (89%), Air Canada (89%).

  • What are the cheapest flights from Illinois to Boise?

    While on average a flight from Illinois to Boise is generally $345, our data shows the cheapest flight currently is $104. When looking at the most popular route, (Chicago O'Hare Intl - Boise Air Term. Gowen Fld), you can expect to pay $155 for that flight.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Illinois to Boise (average of $314). Flying from Illinois to Boise in June is currently the most expensive (average of $421). 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 Illinois?

Book flights to Illinois if you plan to visit one of these locations
Nampa
Meridian
McCall
Caldwell
Ontario

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Alternative routes for Illinois to Boise

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Illinois to Boise

Discover the top 6 airlines that operate flights from Illinois to Boise. 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 marzo 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$129Average$233FlexibilityNo cancel feeOn-time65%
DeltaCheapest$207Average$364FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$209Average$507FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$227Average$367FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$258Average$348FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$302Average$601FlexibilityNo cancel feeOn-time69%
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