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Cheap flights from Chicago to Idaho Falls from $100

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Idaho Falls departing on 1/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Chicago to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:45 am - 1:30 pmORD-IDA
5h 45m1 stop
United Airlines Logo
5:30 pm - 11:59 pmIDA-ORD
5h 29m1 stop
$331United Airlines
Find Deal
Wed, Feb 25 - Wed, Mar 4
Delta Logo
1:56 pm - 10:20 pmORD-IDA
9h 24m2 stops
Delta Logo
5:40 am - 12:23 pmIDA-ORD
5h 43m1 stop
$336Delta
Find Deal
Tue, Mar 10 - Thu, Mar 26
United Airlines Logo
7:10 am - 1:30 pmORD-IDA
7h 20m1 stop
United Airlines Logo
10:45 am - 6:55 pmIDA-ORD
7h 10m1 stop
$342United Airlines
Find Deal
Fri, Feb 27 - Tue, Mar 3
American Airlines Logo
5:05 am - 1:37 pmORD-IDA
9h 32m1 stop
American Airlines Logo
2:07 pm - 10:18 pmIDA-ORD
7h 11m1 stop
$353American Airlines
Find Deal
Fri, Jan 9 - Sun, Jan 11
Alaska Airlines Logo
3:33 pm - 12:07 amORD-IDA
9h 34m1 stop
Alaska Airlines Logo
6:00 am - 2:41 pmIDA-ORD
7h 41m1 stop
$371Alaska Airlines
Find Deal
Wed, Dec 24 - Thu, Dec 25
Alaska Airlines Logo
7:00 am - 4:23 pmORD-IDA
10h 23m1 stop
Alaska Airlines Logo
9:00 am - 11:59 pmIDA-ORD
13h 59m2 stops
$378Alaska Airlines
Find Deal
Wed, Feb 25 - Wed, Mar 4
Delta Logo
7:20 am - 12:22 pmORD-IDA
6h 02m1 stop
Delta Logo
5:40 am - 12:23 pmIDA-ORD
5h 43m1 stop
$381Delta
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Thu, Mar 12 - Thu, Mar 26
Alaska Airlines Logo
3:07 pm - 4:23 pmORD-IDA
26h 16m2 stops
Alaska Airlines Logo
5:00 pm - 2:11 pmIDA-ORD
20h 11m1 stop
$382Alaska Airlines
Find Deal
Fri, Feb 27 - Tue, Mar 3
Alaska Airlines Logo
6:06 pm - 6:18 pmORD-IDA
25h 12m1 stop
Alaska Airlines Logo
9:00 am - 1:10 pmIDA-ORD
27h 10m2 stops
$383Alaska Airlines
Find Deal
Fri, Jan 9 - Sun, Jan 11
Multiple Airlines Logo
10:49 pm - 2:20 pmORD-IDA
16h 31m1 stop
Multiple Airlines Logo
10:52 pm - 2:17 pmIDA-ORD
14h 25m1 stop
$385Multiple Airlines
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Sun, Dec 21 - Mon, Dec 29

Alaska Airlines flights from Chicago to Idaho Falls

Our best Alaska Airlines deals on Chicago to Idaho Falls flight tickets
Alaska Airlines
Dec 24
ORD3:33 pmChicago O'Hare Intl
9h 34m
1 stop
IDA12:07 amIdaho Falls Fanning Field
Dec 25
IDA6:00 amIdaho Falls Fanning Field
7h 41m
1 stop
ORD2:41 pmChicago O'Hare Intl
$371
Find similar
Alaska Airlines
Feb 25
ORD7:00 amChicago O'Hare Intl
10h 23m
1 stop
IDA4:23 pmIdaho Falls Fanning Field
Mar 4
IDA9:00 amIdaho Falls Fanning Field
13h 59m
2 stops
ORD11:59 pmChicago O'Hare Intl
$378
Find similar
Alaska Airlines
Feb 27
ORD3:07 pmChicago O'Hare Intl
26h 16m
2 stops
IDA4:23 pmIdaho Falls Fanning Field
Mar 3
IDA5:00 pmIdaho Falls Fanning Field
20h 11m
1 stop
ORD2:11 pmChicago O'Hare Intl
$382
Find similar

United Airlines flights from Chicago to Idaho Falls

Our best United Airlines deals on Chicago to Idaho Falls flight tickets
United Airlines
Feb 25
ORD8:45 amChicago O'Hare Intl
5h 45m
1 stop
IDA1:30 pmIdaho Falls Fanning Field
Mar 4
IDA5:30 pmIdaho Falls Fanning Field
5h 29m
1 stop
ORD11:59 pmChicago O'Hare Intl
$331
Find similar
United Airlines
Feb 27
ORD7:10 amChicago O'Hare Intl
7h 20m
1 stop
IDA1:30 pmIdaho Falls Fanning Field
Mar 3
IDA10:45 amIdaho Falls Fanning Field
7h 10m
1 stop
ORD6:55 pmChicago O'Hare Intl
$342
Find similar
United Airlines
Mar 11
ORD7:00 amChicago O'Hare Intl
7h 30m
1 stop
IDA1:30 pmIdaho Falls Fanning Field
Mar 25
IDA2:35 pmIdaho Falls Fanning Field
5h 54m
1 stop
ORD9:29 pmChicago O'Hare Intl
$411
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated November 24, 2025.
Use the filters below to find and compare flights from Chicago to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Wed 2/25

8:45 am-1:30 pm

1 stop5h 45m

Idaho Falls Fanning Field

Wed 3/4

5:30 pm-11:59 pm

1 stop5h 29m

$331

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Tue 3/10

1:56 pm-10:20 pm

2 stops9h 24m

Idaho Falls Fanning Field

Thu 3/26

5:40 am-12:23 pm

1 stop5h 43m

$336

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Fri 2/27

7:10 am-1:30 pm

1 stop7h 20m

Idaho Falls Fanning Field

Tue 3/3

10:45 am-6:55 pm

1 stop7h 10m

$342

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Fri 1/9

5:05 am-1:37 pm

1 stop9h 32m

Idaho Falls Fanning Field

Sun 1/11

2:07 pm-10:18 pm

1 stop7h 11m

$353

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Wed 12/24

3:33 pm-12:07 am

1 stop9h 34m

Idaho Falls Fanning Field

Thu 12/25

6:00 am-2:41 pm

1 stop7h 41m

$371

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Wed 2/25

7:00 am-4:23 pm

1 stop10h 23m

Idaho Falls Fanning Field

Wed 3/4

9:00 am-11:59 pm

2 stops13h 59m

$378

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Thu 3/12

7:20 am-12:22 pm

1 stop6h 02m

Idaho Falls Fanning Field

Thu 3/26

5:40 am-12:23 pm

1 stop5h 43m

$381

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Fri 2/27

3:07 pm-4:23 pm

2 stops26h 16m

Idaho Falls Fanning Field

Tue 3/3

5:00 pm-2:11 pm

1 stop20h 11m

$382

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Fri 1/9

6:06 pm-6:18 pm

1 stop25h 12m

Idaho Falls Fanning Field

Sun 1/11

9:00 am-1:10 pm

2 stops27h 10m

$383

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sun 12/21

10:49 pm-2:20 pm

1 stop16h 31m

Idaho Falls Fanning Field

Mon 12/29

10:52 pm-2:17 pm

1 stop14h 25m

$385

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from Chicago to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Idaho Falls?

Our data shows that Friday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $323. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Wednesday is $396.

What is the cheapest time of day to depart on your flight to Idaho Falls?

Our most recent data shows that the best time of day to fly to Idaho Falls is in the morning. Flights from Chicago to Idaho Falls during this time can be as low as $371. Try not to purchase tickets at noon because they tend to be around $586. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Chicago to Idaho Falls Fanning Field flight route?

Fly from Chicago O'Hare Intl to Idaho Falls Fanning Field for the best Chicago - Idaho Falls Fanning Field flight prices

What cabin class options are available on Chicago to Idaho Falls Fanning Field flights?

There are 2 cabin classes available to choose from on Chicago to Idaho Falls Fanning Field flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago to Idaho Falls flights?

You could potentially save up to 4% on your flight if you consider stops on a Chicago to Idaho Falls flight.

When to book flights from Chicago to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Idaho Falls (CHI to IDA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Idaho Falls

Fastest flight time

3h 32m

Direct flights

Fri

Airports in Idaho Falls

1 airport
The fastest flight from Chicago to Idaho Falls takes 3h 32m
Direct flights go from Chicago to Idaho Falls on Friday. There are no airlines offering direct flights.
There is 1 airport near Idaho Falls: Idaho Falls Fanning Field (IDA)
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  • How far is Chicago to Idaho Falls Fanning Field by plane?

    Chicago and Idaho Falls Fanning Field are 1239.4 mi apart from one another. In terms of flight time, this usually takes a little over 5h 45m.

  • When did momondo last update prices for flights from Chicago to Idaho Falls Fanning Field Airport?

    Prices for flights from Chicago to Idaho Falls Fanning Field Airport refresh daily.

  • How many operators does momondo search for flights from Chicago to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from Chicago to Idaho Falls Fanning Field Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The travel and health documents you'll need for your trip to Idaho Falls Fanning Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Chicago to Idaho Falls?

  • What is the most popular airline from Chicago to Idaho Falls?

Best airlines flying from Chicago to Idaho Falls

Compare and see reviews for airlines that fly from Chicago to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $323Free CancellationRating
7.2
11,046 reviews
Search American Airlines flights
United AirlinesPriceFrom $406Free CancellationRating
7.4
9,036 reviews
Search United Airlines flights

Traveling to a place near Idaho Falls?

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

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Idaho Falls?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Idaho Falls from Chicago.

Can I find flights from Chicago to Idaho Falls with flexible booking policies on momondo?

Flights from Chicago to Idaho Falls with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Chicago to Idaho Falls?

Once all potential Chicago to Idaho Falls flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Chicago to Idaho Falls right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to Idaho Falls flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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