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Idaho Falls

$106+ Cheap flights from Illinois 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IDA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Illinois to Idaho Falls

Keep the following information in mind while searching for Illinois to Idaho Falls flight deals. Data was last updated June 12, 2025.

Round-trip from

$249
(Mytrip)

One-way from

$106
(Mytrip)

Popular in

January

Cheapest in

March

Average price

$492

Good round-trip deal

$371 or less
From Illinois to Idaho Falls Fanning Field
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One-way flight from Illinois to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 21% potential increase in price ($136 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 June 2025
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Price to beat on a round-trip flight from Illinois to Idaho Falls Fanning Field.
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Find flight deals from Illinois to Idaho Falls

Cheapest flights from Illinois to Idaho Falls
Explore the most affordable flight options available from Illinois to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/103:18 pmORD - IDA
1 stop21h 26mMultiple Airlines
Fri 7/116:12 pmIDA - ORD
1 stop19h 01mMultiple Airlines
Deal found 6/11$249
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 8/238:00 amORD - IDA
1 stop8h 23mAlaska Airlines
Fri 8/294:03 pmIDA - ORD
1 stop6h 56mAlaska Airlines
Deal found 6/12$267
This Delta deal was found by Cheapflights users on 6/12. 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 8/266:10 amORD - IDA
2 stops9h 09mDelta
Sun 8/316:00 amIDA - ORD
1 stop4h 58mDelta
Deal found 6/12$272
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:10 amSTL - IDA
1 stop6h 08mDelta
Tue 12/306:00 amIDA - STL
1 stop6h 16mDelta
Deal found 6/11$368
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/169:40 amORD - IDA
Nonstop3h 29mAmerican Airlines
Fri 9/1912:43 pmIDA - ORD
Nonstop3h 14mAmerican Airlines
Deal found 6/11$371
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/265:00 amORD - IDA
1 stop5h 47mUnited Airlines
Tue 8/264:00 pmIDA - ORD
1 stop5h 42mUnited Airlines
Deal found 6/12$379
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Fri 8/226:00 amBMI - IDA
1 stop7h 47mAmerican Airlines
Tue 9/212:46 pmIDA - BMI
1 stop6h 01mAmerican Airlines
Deal found 6/12$401
This United Airlines deal was found by Cheapflights users on 6/10. 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 9/68:45 amPIA - IDA
1 stop7h 26mUnited Airlines
Thu 9/115:56 pmIDA - PIA
1 stop26h 01mUnited Airlines
Deal found 6/10$433
This Trip.com deal was found by Cheapflights users on 6/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/263:09 pmORD - IDA
1 stop8h 30mHawaiian Airlines
Sat 8/24:03 pmIDA - ORD
1 stop19h 04mHawaiian Airlines
Deal found 6/11$440
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/265:15 amSTL - IDA
1 stop5h 29mUnited Airlines
Mon 6/306:03 pmIDA - STL
1 stop4h 56mUnited Airlines
Deal found 6/11$491
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/109:24 amMDW - IDA
2 stops9h 47mDelta
Fri 7/116:52 pmIDA - MDW
2 stops12h 52mDelta
Deal found 6/11$604
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 7/15:20 pmMLI - IDA
2 stops25h 02mUnited Airlines
Sat 7/125:00 amIDA - MLI
2 stops9h 07mUnited Airlines
Deal found 6/10$675

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois 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 June 12, 2025.
Use the filters below to find and compare flights from Illinois to Idaho Falls that are best for you.

Fly from

Illinois

Fly to

Idaho Falls

Route

Depart

Return

Price

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Thu 7/10

3:18 pm-11:44 am

1 stop21h 26m

Idaho Falls Fanning Field

Fri 7/11

6:12 pm-2:13 pm

1 stop19h 01m

$249

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sat 8/23

8:00 am-3:23 pm

1 stop8h 23m

Idaho Falls Fanning Field

Wed 8/27

4:03 pm-11:59 pm

1 stop6h 56m

$267

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Tue 8/26

7:45 am-2:19 pm

1 stop7h 34m

Idaho Falls Fanning Field

Sat 8/30

11:20 am-11:56 pm

2 stops11h 36m

$272

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Tue 8/26

5:00 am-9:47 am

1 stop5h 47m

Idaho Falls Fanning Field

Tue 8/26

4:00 pm-10:42 pm

1 stop5h 42m

$379

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Thu 8/7

10:19 am-12:47 pm

Nonstop3h 28m

Idaho Falls Fanning Field

Sun 8/10

12:46 pm-4:58 pm

Nonstop3h 12m

$391

BloomingtonIdaho Falls

BMI - IDA

BMIIDA

Bloomington-Normal

Fri 8/22

6:00 am-12:47 pm

1 stop7h 47m

Idaho Falls Fanning Field

Tue 9/2

12:46 pm-7:47 pm

1 stop6h 01m

$401

PeoriaIdaho Falls

PIA - IDA

PIAIDA

Greater Peoria

Sat 9/6

8:45 am-3:11 pm

1 stop7h 26m

Idaho Falls Fanning Field

Thu 9/11

5:56 pm-8:57 pm

1 stop26h 01m

$433

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Fri 6/27

7:15 pm-10:55 pm

1 stop4h 40m

Idaho Falls Fanning Field

Tue 7/1

6:52 pm-12:43 am

1 stop4h 51m

$436

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sat 7/26

3:09 pm-10:39 pm

1 stop8h 30m

Idaho Falls Fanning Field

Sat 8/2

4:03 pm-12:07 pm

1 stop19h 04m

$440

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Thu 6/26

5:15 am-9:44 am

1 stop5h 29m

Idaho Falls Fanning Field

Mon 6/30

6:03 pm-11:59 pm

1 stop4h 56m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 25 results
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Best time to book a flight from Illinois to Idaho Falls

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

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

Currently, October is the cheapest month in which you can book a flight from Illinois to Idaho Falls (average of $380). Flying from Illinois 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 IL to IDA?

Find hourly flight availability from Illinois 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 June 12, 2025.

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

Rainfall in Idaho Falls by month

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

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

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

If weather is an important factor for your trip to Idaho Falls, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 June 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and Hawaiian Airlines from Illinois to Idaho Falls. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
725 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Illinois 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 Illinois?

    Located just 3.8 mi from the city center, Idaho Falls Fanning Field (IDA) is the airport most travelers will use when flying to Idaho Falls from Illinois.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $200. Users have also found prices from $238 and $244 on Alaska Airlines and Allegiant Air, respectively.

  • What are the most popular routes from Illinois to Idaho Falls?

    When deciding which route to take from Illinois to Idaho Falls consider Chicago O'Hare Intl - Idaho Falls Fanning Field, Greater Peoria - Idaho Falls Fanning Field or Moline Quad-City - Idaho Falls Fanning Field as they are the most popular.

  • What are the cheapest flights from Illinois to Idaho Falls?

    Looking for the cheapest flight from Illinois to Idaho Falls? While on average our users pay $371, our data indicates the cheapest price to be $351. The most popular route (Chicago O'Hare Intl - Idaho Falls Fanning Field), is priced around $249.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Illinois to Idaho Falls (average of $380). Flying from Illinois 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 Illinois?

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Alternative routes for Illinois to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Illinois to Idaho Falls

Discover the top 3 airlines that operate flights from Illinois 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$314Average$371FlexibilityNo cancel feeOn-time71%
DeltaCheapest$342Average$431FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$363Average$618FlexibilityNo cancel feeOn-time69%

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