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$69+ Cheap flights from Illinois 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BOI
Nov 5 — Nov 121
1 adult
Tue 11/5
Tue 11/12
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Find flight deals from Illinois to Idaho

Cheapest flights from Illinois to Idaho
Explore the most affordable flight options available from Illinois to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2024.

This Delta deal was found by Cheapflights users on 10/31. 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.
Thu 11/286:17 amORD - GEG
1 stop8h 49mDelta
Thu 12/53:40 pmGEG - ORD
1 stop6h 18mDelta
Deal found 10/31$238
This Mytrip deal was found by Cheapflights users on 10/30. 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.
Wed 11/1310:13 pmORD - BOI
1 stop13h 43mSpirit Airlines
Sun 11/1711:51 amBOI - ORD
3 stops31h 35mSpirit Airlines
Deal found 10/30$252
This Delta deal was found by Cheapflights users on 10/31. 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.
Thu 12/51:30 pmMDW - BOI
2 stops12h 03mDelta
Sun 12/85:35 amBOI - MDW
1 stop6h 56mDelta
Deal found 10/31$253
This Delta deal was found by Cheapflights users on 10/30. 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 12/166:45 pmORD - BOI
1 stop19h 35mDelta
Wed 12/251:15 pmBOI - ORD
1 stop7h 24mDelta
Deal found 10/30$257
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/102:30 pmORD - BOI
1 stop7h 54mUnited Airlines
Sun 12/158:00 amBOI - ORD
Nonstop3h 39mUnited Airlines
Deal found 10/31$259
This Delta deal was found by Cheapflights users on 10/31. 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.
Thu 11/216:00 amMDW - GEG
1 stop7h 39mDelta
Sun 11/2411:15 pmGEG - MDW
1 stop8h 17mDelta
Deal found 10/31$263
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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.
Sat 11/167:00 amORD - GEG
1 stop7h 26mAlaska Airlines
Wed 11/201:22 pmGEG - ORD
1 stop8h 37mAlaska Airlines
Deal found 10/30$263
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1510:13 pmORD - BOI
1 stop13h 43mMultiple Airlines
Mon 11/258:55 pmBOI - ORD
1 stop6h 35mMultiple Airlines
Deal found 10/30$267
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/147:10 amORD - GEG
1 stop7h 37mUnited Airlines
Sun 12/2911:59 pmGEG - ORD
Nonstop3h 42mUnited Airlines
Deal found 10/31$279
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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.
Fri 12/66:32 amORD - BOI
1 stop8h 21mAlaska Airlines
Mon 12/97:50 pmBOI - ORD
2 stops8h 29mAlaska Airlines
Deal found 10/30$312
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Fri 12/61:39 pmSTL - BOI
1 stop5h 12mUnited Airlines
Sun 12/82:35 pmBOI - STL
1 stop5h 06mUnited Airlines
Deal found 10/30$340
This Southwest deal was found by Cheapflights users on 10/30. 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.
Tue 12/104:00 pmMDW - BOI
1 stop6h 50mSouthwest
Fri 12/1311:10 amBOI - MDW
1 stop4h 50mSouthwest
Deal found 10/30$344

Find flights from Illinois to Idaho within your budget

Customize your flight search to find flights from Illinois 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 2,570,725 searches. Data last updated October 31, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Mon 11/18

10:13 pm-10:56 am

1 stop13h 43m

$69

ChicagoBoise

MDW - BOI

MDWBOI

Chicago Midway

Wed 11/20

6:00 am-12:40 pm

1 stop7h 40m

$114

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Tue 11/19

7:00 am-1:55 pm

1 stop7h 55m

$134

St. LouisJackson

STL - JAC

STLJAC

Lambert-St Louis

Tue 1/28

4:36 pm-8:47 pm

1 stop5h 11m

$167

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

Sat 11/16

10:45 am-7:45 pm

2 stops11h 00m

$189

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Tue 12/3

4:03 pm-9:52 pm

1 stop6h 49m

$203

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Thu 11/28

9:20 am-10:56 am

3 stops26h 36m

$204

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Fri 12/6

5:25 pm-11:45 pm

1 stop7h 20m

$114

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

Sat 12/7

6:05 am-12:35 pm

1 stop8h 30m

$119

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Tue 12/3

5:21 pm-2:50 pm

2 stops22h 29m

$152

Flights are sorted by cheapest first

Deals found on 10/30

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Idaho

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

Travel insights for flights from Illinois to Idaho

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

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Idaho (average of $311). Flying from Illinois 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 IL to ID?

Find hourly flight availability from Illinois 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 October 31, 2024.

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

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 October 31, 2024.
Read reviews from past customers who have flown Southwest, Delta and American Airlines from Illinois to Idaho. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,116 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,116 reviews
Southwest
8.1
Very good
5,116 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,420 reviews
Southwest
8.1
Very good
5,116 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,835 reviews
Southwest
8.1
Very good
5,116 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Aeromexico
7.5
Good
2,032 reviews
Southwest
8.1
Very good
5,116 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,240 reviews
Southwest
8.1
Very good
5,116 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

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

  • Can I find flights from Illinois to Idaho for under $200 on Cheapflights?

    Yes, there are multiple flights from Illinois to Idaho for under $200. The cheapest flight booked recently is on Spirit Airlines for just $117, but on average you can expect to pay $279.

  • Are there nonstop flights from Illinois to Idaho for under $300 on Cheapflights?

    Cheapflights has at least 5 direct flights from Illinois to Idaho under $300. A good price for a nonstop flight from Illinois to Idaho is less than $359.

  • Are there last-minute flights available from Illinois to Idaho for under $300?

    There are currently 20+ open flights from Illinois to Idaho within the next 7 days for less than $300.

  • What days are nonstop flights available from Illinois to Idaho?

    You can find nonstop flights on the following days: Thursday, Friday.

  • How many flights depart from Illinois to Idaho on average per day?

    Travelers can expect 3 flights from Illinois to Idaho on average per day.
    Evening (6pm - Midnight) - 100% of flight departures

  • How long is the flight from Illinois to Idaho?

    There are many flights that can get you from Illinois to Idaho in 5h 51m. Fly via Spirit Airlines, Delta, or Alaska Airlines to get the fastest option. Illinois and Idaho are separated by a distance of 1441 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as $69 on Spirit Airlines. Other airlines that offer cheap prices include Delta from $114 and Alaska Airlines from $134 one-way.

  • What does ORD to BOI mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Chicago O'Hare Intl Airport to Boise Air Term. Gowen Fld Airport flight would often be abbreviated as a ORD to BOI flight. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Idaho Falls Fanning Field Airport (IDA), Hailey Sun Valley-Friedman Airport (SUN), Lewiston Nez Perce Rgnl Airport (LWS), Twin Falls Joslin Airport (TWF), Pocatello Airport (PIH).

  • Can I find deals for flights from Illinois to Idaho that include extra baggage allowance?

    The amount of baggage you can bring on your Illinois to Idaho flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Illinois to Idaho with specific airlines?

    Yes, Cheapflights allows you to browse and filter Illinois to Idaho flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois 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.

  • Can I find deals for flights from Illinois to Idaho that allow pets onboard?

    Many airlines flying from Illinois to Idaho offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Illinois to Idaho?

    Yes, you can often find last-minute deals on Illinois to Idaho flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Illinois to Idaho flight deals updated?

    The Illinois to Idaho flight deals you see on this page were last updated on 10/31.

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

    Currently, January is the cheapest month in which you can book a flight from Illinois to Idaho (average of $311). Flying from Illinois 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.

See more FAQs

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Illinois to Idaho

Discover the top 5 airlines that operate flights from Illinois 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 2,570,725 searches. Data last updated October 31, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$115Average$233FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$139Average$337FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$216Average$506FlexibilityNo cancel feeOn-time71%
DeltaCheapest$216Average$397FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$320Average$651FlexibilityNo cancel feeOn-time69%
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