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$100+ Cheap flights from Chicago (CHI) to Idaho

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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BOI
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Chicago to Idaho

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Idaho (USID). 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 January 21, 2025.

Round-trip from

$188
(CheapOair)

One-way from

$100
(CheapOair)

Good round-trip deal

$349 or less
From Chicago (CHI) to Idaho
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One-way flight from Chicago (CHI) to Idaho
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Price to beat on a round-trip flight from Chicago (CHI) to Idaho.
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Find flight deals from Chicago to Idaho

Cheapest flights from Chicago to Idaho
Explore the most affordable flight options available from Chicago to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This CheapOair deal was found by Cheapflights users on 1/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/41:32 pmORD - BOI
1 stop24h 00mSpirit Airlines
Tue 3/111:31 pmBOI - ORD
1 stop16h 05mSpirit Airlines
Deal found 1/21$188
This Southwest deal was found by Cheapflights users on 1/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/86:05 amMDW - GEG
1 stop8h 15mSouthwest
Sat 2/155:00 amGEG - MDW
1 stop9h 25mSouthwest
Deal found 1/21$199
This Southwest deal was found by Cheapflights users on 1/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/86:15 amORD - GEG
1 stop8h 45mSouthwest
Sat 2/155:00 amGEG - ORD
1 stop11h 30mSouthwest
Deal found 1/21$199
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/52:08 pmMDW - GEG
2 stops11h 55mDelta
Wed 3/126:00 amGEG - MDW
1 stop6h 15mDelta
Deal found 1/20$204
This Delta deal was found by Cheapflights users on 1/21. 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.
Tue 2/257:00 amORD - GEG
1 stop9h 45mDelta
Thu 2/271:15 pmGEG - ORD
1 stop6h 12mDelta
Deal found 1/21$219
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/86:59 pmMDW - BOI
1 stop5h 59mDelta
Mon 3/105:30 amBOI - MDW
1 stop7h 45mDelta
Deal found 1/20$229
This Delta deal was found by Cheapflights users on 1/21. 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 2/197:00 amORD - BOI
1 stop7h 45mDelta
Tue 2/2511:25 amBOI - ORD
1 stop5h 58mDelta
Deal found 1/21$229
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/43:03 pmORD - BOI
1 stop8h 20mAlaska Airlines
Mon 2/104:59 pmBOI - ORD
1 stop20h 04mAlaska Airlines
Deal found 1/20$248
This Expedia deal was found by Cheapflights users on 1/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1010:55 amORD - BOI
1 stop10h 54mMultiple Airlines
Mon 4/148:59 pmBOI - ORD
1 stop8h 00mMultiple Airlines
Deal found 1/20$253
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/47:35 pmORD - BOI
Nonstop4h 10mUnited Airlines
Tue 3/115:25 pmBOI - ORD
1 stop5h 58mUnited Airlines
Deal found 1/21$259
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/273:35 pmORD - GEG
1 stop7h 09mAlaska Airlines
Mon 2/249:54 pmGEG - ORD
1 stop13h 10mAlaska Airlines
Deal found 1/20$313
This Southwest deal was found by Cheapflights users on 1/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/192:35 pmMDW - BOI
1 stop9h 10mSouthwest
Sat 2/225:00 amBOI - MDW
2 stops8h 05mSouthwest
Deal found 1/20$329

Find flights from Chicago to Idaho within your budget

Customize your flight search to find flights from Chicago to Idaho 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 January 21, 2025.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Tue 3/4

7:51 pm-12:32 pm

1 stop17h 41m

Boise Air Term. Gowen Fld

Tue 3/11

1:31 pm-6:36 am

1 stop16h 05m

$188

ChicagoSpokane

MDW - GEG

MDWGEG

Chicago Midway

Sat 2/8

6:05 am-12:20 pm

1 stop8h 15m

Spokane

Sat 2/15

5:00 am-4:25 pm

1 stop9h 25m

$199

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

Sat 2/8

6:15 am-1:00 pm

1 stop8h 45m

Spokane

Sat 2/15

5:00 am-6:30 pm

1 stop11h 30m

$199

ChicagoSpokane

MDW - GEG

MDWGEG

Chicago Midway

Wed 3/5

2:08 pm-12:03 am

2 stops11h 55m

Spokane

Wed 3/12

6:00 am-2:15 pm

1 stop6h 15m

$204

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

Wed 4/2

9:34 am-12:58 pm

1 stop5h 24m

Spokane

Wed 4/16

7:21 pm-9:24 am

2 stops12h 03m

$204

ChicagoBoise

MDW - BOI

MDWBOI

Chicago Midway

Sat 3/8

6:59 pm-11:58 pm

1 stop5h 59m

Boise Air Term. Gowen Fld

Mon 3/10

5:30 am-2:15 pm

1 stop7h 45m

$229

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Wed 2/19

6:15 am-2:05 pm

1 stop8h 50m

Boise Air Term. Gowen Fld

Mon 2/24

2:55 pm-11:56 pm

1 stop8h 01m

$229

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Tue 2/4

3:03 pm-10:23 pm

1 stop8h 20m

Boise Air Term. Gowen Fld

Tue 2/11

2:40 pm-11:59 pm

1 stop8h 19m

$248

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Tue 3/4

7:35 pm-10:45 pm

Nonstop4h 10m

Boise Air Term. Gowen Fld

Tue 3/11

5:25 pm-12:23 am

1 stop5h 58m

$259

ChicagoBoise

MDW - BOI

MDWBOI

Chicago Midway

Wed 2/19

2:35 pm-10:45 pm

1 stop9h 10m

Boise Air Term. Gowen Fld

Sat 2/22

5:00 am-2:05 pm

2 stops8h 05m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 57 results
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Best time to book a flight from Chicago to Idaho

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

Travel insights for flights from Chicago to Idaho

Get recent, data-driven insights about flights from Chicago to Idaho including ideal travel times, pricing trends, and more.

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

Currently, October is the cheapest month in which you can book a flight from Chicago to Idaho (average of $314). Flying from Chicago to Idaho in June is currently the most expensive (average of $436). 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 CHI to ID?

Find hourly flight availability from Chicago to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

When flying from Chicago to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Chicago to Idaho

Explore weekly flight availability from Chicago to Idaho. 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 January 21, 2025.

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

Rainfall in Idaho by month

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

In terms of precipitation, rainfall in Idaho 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 Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

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

If weather is an important factor for your trip to Idaho, 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 Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated January 21, 2025.
See what other customers who have flown with Spirit Airlines, Alaska Airlines and United Airlines from Chicago to Idaho have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,706 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,985 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

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

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

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $100. Users have also found prices from $100 and $160 on Delta and Southwest, respectively.

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

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

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

    The top 3 most reliable airlines when flying from Chicago to Idaho are Lufthansa (100%), SkyWest Airlines (86%) and United Airlines (86%).

  • What are the cheapest flights from Chicago to Idaho?

    Looking at all options, your cheapest flight can be booked for $270. While the most popular route (Chicago O'Hare Intl - Jackson Hole) can be booked for $339 on average our data indicates $540 when flying from Chicago to Idaho.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Chicago to Idaho (average of $314). Flying from Chicago to Idaho in June is currently the most expensive (average of $436). 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.

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Alternative routes for Chicago to Idaho

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

Discover the top 6 airlines that operate flights from Chicago to Idaho. 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$115Average$233FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$227Average$346FlexibilityNo cancel feeOn-time75%
DeltaCheapest$228Average$345FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$258Average$413FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$258Average$353FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$320Average$624FlexibilityNo cancel feeOn-time69%
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