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Idaho Falls

$123+ 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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — IDA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/17. 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 12/231:55 pmORD - IDA
1 stop8h 19mUnited Airlines
Sat 12/276:40 amIDA - ORD
1 stop5h 39mUnited Airlines
Deal found 12/17$616
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/215:21 amORD - IDA
1 stop8h 25mAmerican Airlines
Tue 12/237:00 amIDA - ORD
1 stop9h 52mAmerican Airlines
Deal found 12/17$661
This American Airlines deal was found by Cheapflights users on 12/16. 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.
Tue 12/231:40 pmORD - IDA
1 stop9h 41mAmerican Airlines
Sat 12/277:00 amIDA - ORD
1 stop9h 52mAmerican Airlines
Deal found 12/16$686
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/313:42 pmORD - IDA
1 stop8h 17mUnited Airlines
Sun 1/44:05 pmIDA - ORD
1 stop16h 39mUnited Airlines
Deal found 12/15$707
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/211:55 pmORD - IDA
1 stop8h 19mUnited Airlines
Tue 12/234:05 pmIDA - ORD
2 stops16h 22mUnited Airlines
Deal found 12/17$874
This Delta deal was found by Cheapflights users on 12/17. 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 12/231:35 pmORD - IDA
2 stops10h 17mDelta
Sat 12/276:57 pmIDA - ORD
2 stops12h 50mDelta
Deal found 12/17$1,069
This Delta deal was found by Cheapflights users on 12/14. 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 12/2311:48 amMDW - IDA
2 stops7h 29mDelta
Sat 12/275:55 amIDA - MDW
2 stops10h 31mDelta
Deal found 12/14$1,080
This Delta deal was found by Cheapflights users on 12/14. 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 12/309:29 amMDW - IDA
2 stops9h 48mDelta
Sat 1/36:57 pmIDA - MDW
2 stops13h 08mDelta
Deal found 12/14$1,990

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$312
(Kiwi.com)

One-way from

$123
(Kiwi.com)

Popular in

January

Cheapest in

March

Average price

$410
Provider with most accurate pricing for Chicago (CHI)-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Idaho Falls Fanning Field flights.
Search Deals
From Chicago (CHI) to Idaho Falls Fanning Field
Search Deals
One-way flight from Chicago (CHI) to Idaho Falls Fanning Field
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($141 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

Wed 1/14

3:35 pm-10:59 pm

1 stop8h 24m

Idaho Falls Fanning Field

Wed 1/21

9:00 am-5:10 pm

1 stop7h 10m

$330

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sat 1/24

3:35 pm-10:59 pm

1 stop8h 24m

Idaho Falls Fanning Field

Mon 1/26

6:58 pm-11:50 pm

1 stop27h 52m

$367

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Thu 1/8

2:06 pm-10:59 pm

2 stops9h 53m

Idaho Falls Fanning Field

Mon 1/12

6:58 pm-11:50 pm

1 stop27h 52m

$398

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Fri 3/27

11:42 am-11:19 pm

2 stops12h 37m

Idaho Falls Fanning Field

Tue 3/31

2:18 pm-10:26 pm

1 stop7h 08m

$404

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sun 3/1

6:10 am-1:30 pm

1 stop8h 20m

Idaho Falls Fanning Field

Wed 3/4

2:02 pm-11:37 pm

1 stop8h 35m

$406

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Wed 2/25

3:54 pm-11:36 pm

1 stop8h 42m

Idaho Falls Fanning Field

Sun 3/1

8:00 am-12:01 pm

1 stop27h 01m

$417

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Thu 2/26

3:54 pm-11:36 pm

1 stop8h 42m

Idaho Falls Fanning Field

Sun 3/1

8:00 am-12:01 pm

1 stop27h 01m

$417

ChicagoIdaho Falls

MDW - IDA

MDWIDA

Chicago Midway

Thu 1/22

1:26 pm-10:57 pm

2 stops10h 31m

Idaho Falls Fanning Field

Wed 1/28

6:35 pm-9:53 am

2 stops14h 18m

$689

ChicagoIdaho Falls

MDW - IDA

MDWIDA

Chicago Midway

Mon 1/12

6:45 am-5:51 pm

2 stops12h 06m

Idaho Falls Fanning Field

Mon 1/19

5:25 am-5:55 pm

2 stops11h 30m

$1,591

ChicagoIdaho Falls

MDW - IDA

MDWIDA

Chicago Midway

Tue 12/30

9:29 am-6:17 pm

2 stops9h 48m

Idaho Falls Fanning Field

Sat 1/3

6:57 pm-9:05 am

2 stops13h 08m

$1,990

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 24 results
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Compare providers for flights from Chicago to Idaho Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Idaho Falls in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Idaho Falls flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago-Idaho Falls flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Idaho Falls flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $229). Flying from Chicago to Idaho Falls in February is currently the most expensive (average of $355). 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 December 18, 2025.

It’s typically best to fly out from Chicago to Idaho Falls in the afternoon. Doing so could potentially save you 38% on the flight price compared to flying at noon, which is usually more expensive.

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 December 18, 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
9,091 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability
United Airlines
7.4
Good
9,091 reviews
United Airlines
7.4
Good
9,091 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

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 0 inbound flights 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 and Delta can get you from Chicago to Idaho Falls in just under 8h 24m. Your travel time can differ by up to 2h 07m. 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 $323. Another option worth looking into is United Airlines, starting at $406 round trip. These flights start at 30% 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 $229). Flying from Chicago to Idaho Falls in February is currently the most expensive (average of $355). 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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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$323Average$391FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$406Average$620FlexibilityNo cancel feeOn-time69%

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