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Idaho Falls

$124+ Cheap flights from Chicago (CHI) to Idaho Falls (IDA)

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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — IDA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Chicago to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Idaho Falls (IDA). 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 September 11, 2025.

Round-trip from

$305
(Kiwi.com)

One-way from

$124
(Kiwi.com)

Popular in

January

Cheapest in

March

Average price

$339
From Chicago (CHI) to Idaho Falls Fanning Field
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One-way flight from Chicago (CHI) to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 22% potential increase in price ($144 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Chicago to Idaho Falls

Cheapest flights from Chicago to Idaho Falls
Explore the most affordable flight options available from Chicago to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This KAYAK deal was found by Cheapflights users on 9/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/243:15 pmORD - IDA
1 stop8h 23mAlaska Airlines
Mon 11/33:50 pmIDA - ORD
1 stop7h 34mAlaska Airlines
Deal found 9/10$353
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/87:10 amORD - IDA
1 stop7h 23mUnited Airlines
Wed 10/155:56 pmIDA - ORD
1 stop5h 03mUnited Airlines
Deal found 9/10$356
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:50 amORD - IDA
2 stops16h 22mMultiple Airlines
Mon 11/38:52 pmIDA - ORD
1 stop16h 35mMultiple Airlines
Deal found 9/10$359
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/274:09 pmORD - IDA
1 stop5h 43mUnited Airlines
Wed 10/12:35 pmIDA - ORD
1 stop7h 04mUnited Airlines
Deal found 9/10$381
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:45 amORD - IDA
Nonstop3h 40mAmerican Airlines
Fri 10/241:11 pmIDA - ORD
Nonstop3h 17mAmerican Airlines
Deal found 9/10$411
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/45:01 amORD - IDA
1 stop5h 47mUnited Airlines
Sat 10/410:50 amIDA - ORD
1 stop6h 36mUnited Airlines
Deal found 9/10$414
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/148:00 amORD - IDA
1 stop8h 13mAlaska Airlines
Sun 11/163:50 pmIDA - ORD
1 stop13h 32mAlaska Airlines
Deal found 9/11$415
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/207:59 pmORD - IDA
2 stops20h 39mAlaska Airlines
Fri 10/244:15 pmIDA - ORD
1 stop27h 35mAlaska Airlines
Deal found 9/10$444
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:01 amORD - IDA
1 stop5h 47mUnited Airlines
Fri 10/245:56 pmIDA - ORD
1 stop5h 03mUnited Airlines
Deal found 9/10$451
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/275:01 amORD - IDA
1 stop5h 47mUnited Airlines
Thu 10/25:56 pmIDA - ORD
1 stop5h 03mUnited Airlines
Deal found 9/10$461
This Hawaiian Airlines deal was found by Cheapflights users on 9/11. 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.
Fri 10/108:00 amORD - IDA
1 stop8h 38mHawaiian Airlines
Sun 10/126:00 amIDA - ORD
1 stop7h 19mHawaiian Airlines
Deal found 9/11$463
This Delta deal was found by Cheapflights users on 9/10. 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.
Tue 9/161:08 pmMDW - IDA
2 stops10h 17mDelta
Fri 9/196:00 amIDA - MDW
2 stops11h 35mDelta
Deal found 9/10$845

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Idaho Falls 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 September 11, 2025.
Use the filters below to find and compare flights from Chicago to Idaho Falls that are best for you.

Fly from

Chicago

Fly to

Idaho Falls

Route

Depart

Return

Price

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Fri 10/24

3:15 pm-10:38 pm

1 stop8h 23m

Idaho Falls Fanning Field

Mon 11/3

3:50 pm-12:24 am

1 stop7h 34m

$353

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Wed 10/8

7:10 am-1:33 pm

1 stop7h 23m

Idaho Falls Fanning Field

Wed 10/15

5:56 pm-11:59 pm

1 stop5h 03m

$356

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sat 9/27

4:09 pm-8:52 pm

1 stop5h 43m

Idaho Falls Fanning Field

Wed 10/1

2:35 pm-10:39 pm

1 stop7h 04m

$381

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Mon 10/20

9:45 am-12:25 pm

Nonstop3h 40m

Idaho Falls Fanning Field

Fri 10/24

1:11 pm-5:28 pm

Nonstop3h 17m

$411

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Fri 11/14

8:00 am-3:13 pm

1 stop8h 13m

Idaho Falls Fanning Field

Sun 11/16

3:50 pm-6:22 am

1 stop13h 32m

$415

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Mon 10/20

7:59 pm-3:38 pm

2 stops20h 39m

Idaho Falls Fanning Field

Fri 10/24

4:15 pm-8:50 pm

1 stop27h 35m

$444

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Mon 10/20

5:01 am-9:48 am

1 stop5h 47m

Idaho Falls Fanning Field

Fri 10/24

5:56 pm-11:59 pm

1 stop5h 03m

$451

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sat 9/27

5:01 am-9:48 am

1 stop5h 47m

Idaho Falls Fanning Field

Thu 10/2

5:56 pm-11:59 pm

1 stop5h 03m

$461

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Fri 10/10

8:00 am-3:38 pm

1 stop8h 38m

Idaho Falls Fanning Field

Sun 10/12

6:00 am-2:19 pm

1 stop7h 19m

$463

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sat 9/27

9:50 am-12:24 pm

Nonstop3h 34m

Idaho Falls Fanning Field

Wed 10/1

1:35 pm-11:59 pm

1 stop9h 24m

$466

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 26 results
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Best time to book a flight from Chicago to Idaho Falls

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

Cheapflights Insights

Everything you need to know about your flight from Chicago to Idaho Falls

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

Currently, October is the cheapest month in which you can book a flight from Chicago to Idaho Falls (average of $380). Flying from Chicago to Idaho Falls in December is currently the most expensive (average of $578). 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 IDA?

Find hourly flight availability from Chicago to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

It’s typically best to fly out from Chicago to Idaho Falls in the morning. Doing so could potentially save you 40% on the flight price compared to flying at noon, which is usually more expensive.

Weekly flight availability from Chicago to Idaho Falls

Explore weekly flight availability from Chicago to Idaho Falls. 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 September 11, 2025.

The most flights from CHI to IDA are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. 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 Falls. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Chicago to Idaho Falls, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Chicago to Idaho Falls. 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 Idaho Falls from Chicago?

    For a flight from Chicago to Idaho Falls, you will be flying into Fanning Field. Idaho Falls Fanning Field (IDA) is just 3.8 mi from the center of the city. Fanning Field is the only Idaho Falls airport and it handles 1 inbound flight from Chicago per day. 2 airlines have flights to Idaho Falls Fanning Field from Chicago on a regular basis.

  • How long is the flight from Chicago to Idaho Falls?

    Alaska Airlines, United Airlines, and American Airlines can get you from Chicago to Idaho Falls in just under 3h 40m. Your travel time can differ by up to 4h 43m. The distance between Chicago and Idaho Falls is about 1225 mi. This flight may include one or multiple stops.

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

    Flying on American Airlines is currently your cheapest option to Idaho Falls, with prices starting at $314. Another option worth looking into is United Airlines, starting at $406 round trip. These flights start at 35% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Chicago to Idaho Falls (average of $380). Flying from Chicago to Idaho Falls in December is currently the most expensive (average of $578). 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 Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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Alternative routes for Chicago to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Chicago to Idaho Falls

Discover the top 2 airlines that operate flights from Chicago to Idaho Falls. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$314Average$371FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$406Average$620FlexibilityNo cancel feeOn-time69%

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