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Cheap flights from Illinois to Idaho Falls from $144

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Idaho Falls departing on 7/3. 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 Illinois to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:15 am - 4:00 pm
ORD
-
IDA
9h 45m
1 stop
Multiple Airlines Logo
10:47 pm - 12:49 am
IDA
-
ORD
25h 02m
2 stops
$307Multiple Airlines
Mon, Jul 6 - Mon, Jul 20
Alaska Airlines Logo
7:00 am - 1:06 pm
ORD
-
IDA
7h 06m
1 stop
Alaska Airlines Logo
4:14 pm - 11:41 pm
IDA
-
ORD
6h 27m
1 stop
$310Alaska Airlines
Sat, Sep 19 - Tue, Sep 22
Multiple Airlines Logo
7:15 am - 4:00 pm
ORD
-
IDA
9h 45m
1 stop
Multiple Airlines Logo
10:47 pm - 5:28 am
IDA
-
ORD
29h 41m
1 stop
$316Multiple Airlines
Mon, Jul 6 - Mon, Jul 20
United Airlines Logo
9:00 am - 11:45 am
ORD
-
IDA
3h 45mnonstop
United Airlines Logo
5:54 pm - 12:44 am
IDA
-
ORD
5h 50m
1 stop
$319United Airlines
Sat, May 30 - Sat, Jun 13
Alaska Airlines Logo
9:00 am - 3:35 pm
ORD
-
IDA
7h 35m
1 stop
Alaska Airlines Logo
1:46 pm - 11:59 pm
IDA
-
ORD
9h 13m
1 stop
$320Alaska Airlines
Sat, Oct 24 - Wed, Oct 28
United Airlines Logo
5:00 am - 9:50 am
ORD
-
IDA
5h 50m
1 stop
United Airlines Logo
5:54 pm - 12:44 am
IDA
-
ORD
5h 50m
1 stop
$327United Airlines
Sat, Jul 11 - Sat, Jul 18
Delta Logo
2:11 pm - 6:14 pm
ORD
-
IDA
5h 03m
1 stop
Delta Logo
6:54 pm - 8:39 am
IDA
-
ORD
12h 45m
2 stops
$334Delta
Tue, May 26 - Tue, Jun 2
American Airlines Logo
10:50 am - 1:23 pm
ORD
-
IDA
3h 33mnonstop
American Airlines Logo
12:53 pm - 5:23 pm
IDA
-
ORD
3h 30mnonstop
$340American Airlines
Tue, Jul 7 - Thu, Jul 16
American Airlines Logo
6:00 am - 1:23 pm
SPI
-
IDA
8h 23m
1 stop
American Airlines Logo
2:20 pm - 12:09 am
IDA
-
SPI
8h 49m
2 stops
$536American Airlines
Tue, Jul 28 - Thu, Aug 6
Delta Logo
9:54 am - 6:17 pm
MDW
-
IDA
9h 23m
2 stops
Delta Logo
6:00 am - 6:25 pm
IDA
-
MDW
11h 25m
2 stops
$599Delta
Sun, Jul 5 - Thu, Jul 16

United Airlines flights from Illinois to Idaho Falls

Our best United Airlines deals on Illinois to Idaho Falls flight tickets
United Airlines
May 30
ORD9:00 amChicago O'Hare Intl
3h 45m
IDA11:45 amIdaho Falls Fanning Field
Jun 13
IDA5:54 pmIdaho Falls Fanning Field
5h 50m
1 stop
ORD12:44 amChicago O'Hare Intl
$319
United Airlines
Jul 11
ORD5:00 amChicago O'Hare Intl
5h 50m
1 stop
IDA9:50 amIdaho Falls Fanning Field
Jul 18
IDA5:54 pmIdaho Falls Fanning Field
5h 50m
1 stop
ORD12:44 amChicago O'Hare Intl
$327
United Airlines
Jun 20
ORD5:00 amChicago O'Hare Intl
5h 50m
1 stop
IDA9:50 amIdaho Falls Fanning Field
Jun 27
IDA5:54 pmIdaho Falls Fanning Field
5h 50m
1 stop
ORD12:44 amChicago O'Hare Intl
$341

American Airlines flights from Illinois to Idaho Falls

Our best American Airlines deals on Illinois to Idaho Falls flight tickets
American Airlines
Jul 7
ORD10:50 amChicago O'Hare Intl
3h 33m
IDA1:23 pmIdaho Falls Fanning Field
Jul 16
IDA12:53 pmIdaho Falls Fanning Field
3h 30m
ORD5:23 pmChicago O'Hare Intl
$340
American Airlines
Aug 22
ORD6:00 amChicago O'Hare Intl
6h 30m
1 stop
IDA11:30 amIdaho Falls Fanning Field
Aug 29
IDA2:20 pmIdaho Falls Fanning Field
7h 50m
1 stop
ORD11:10 pmChicago O'Hare Intl
$351
American Airlines
Sep 19
ORD9:40 amChicago O'Hare Intl
3h 32m
IDA12:12 pmIdaho Falls Fanning Field
Sep 22
IDA1:44 pmIdaho Falls Fanning Field
3h 16m
ORD6:00 pmChicago O'Hare Intl
$360

momondo 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, momondo users made 832,500 searches. Data last updated May 8, 2026.
Use the filters below to find and compare flights from Illinois to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Mon 7/6

7:15 am-4:00 pm

1 stop9h 45m

Idaho Falls Fanning Field

Mon 7/20

10:47 pm-12:49 am

2 stops25h 02m

$307

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sat 9/19

7:00 am-1:06 pm

1 stop7h 06m

Idaho Falls Fanning Field

Tue 9/22

4:14 pm-11:41 pm

1 stop6h 27m

$310

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Mon 7/6

7:15 am-4:00 pm

1 stop9h 45m

Idaho Falls Fanning Field

Mon 7/20

10:47 pm-5:28 am

1 stop29h 41m

$316

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sat 5/30

9:00 am-11:45 am

Nonstop3h 45m

Idaho Falls Fanning Field

Sat 6/13

5:54 pm-12:44 am

1 stop5h 50m

$319

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sat 10/24

9:00 am-3:35 pm

1 stop7h 35m

Idaho Falls Fanning Field

Wed 10/28

1:46 pm-11:59 pm

1 stop9h 13m

$320

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Sat 7/11

5:00 am-9:50 am

1 stop5h 50m

Idaho Falls Fanning Field

Sat 7/18

5:54 pm-12:44 am

1 stop5h 50m

$327

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Tue 5/26

2:11 pm-6:14 pm

1 stop5h 03m

Idaho Falls Fanning Field

Tue 6/2

6:54 pm-8:39 am

2 stops12h 45m

$334
Quickest round-trip

ChicagoIdaho Falls

ORD - IDA

ORDIDA

Chicago O'Hare Intl

Tue 7/7

10:50 am-1:23 pm

Nonstop3h 33m

Idaho Falls Fanning Field

Thu 7/16

12:53 pm-5:23 pm

Nonstop3h 30m

$340

SpringfieldIdaho Falls

SPI - IDA

SPIIDA

Springfield Capital

Tue 7/28

6:00 am-1:23 pm

1 stop8h 23m

Idaho Falls Fanning Field

Thu 8/6

2:20 pm-12:09 am

2 stops8h 49m

$536

ChicagoIdaho Falls

MDW - IDA

MDWIDA

Chicago Midway

Sun 7/5

9:54 am-6:17 pm

2 stops9h 23m

Idaho Falls Fanning Field

Thu 7/16

6:00 am-6:25 pm

2 stops11h 25m

$599

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 Illinois 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 month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of April, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $0.

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

Our data shows that Saturday 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 Friday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Friday is $550.

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

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

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

You could potentially save up to 27% on your flight if you consider stops on a Illinois to Idaho Falls flight.

Cheap Illinois to Idaho Falls flight deals and tips

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

Fastest flight time

3h 32m

Direct flights

Every day

Airports in Idaho Falls

1 airport
The fastest flight from Illinois to Idaho Falls takes 3h 32m
Direct flights go from Illinois to Idaho Falls every day.
There is 1 airport in Idaho Falls. From Illinois there are direct flights to Idaho Falls Fanning Field (IDA).
Search flight deals

Frequently asked questions about flying from Illinois to Idaho Falls

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

    Prices for flights from Illinois to Idaho Falls Fanning Field Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois 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 required for your trip to Idaho Falls Fanning Field Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho Falls Fanning Field Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from Illinois to Idaho Falls

Compare and see reviews for airlines that fly from Illinois to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $371Free CancellationRating
7.1
11,667 reviews
Search American 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 Illinois to Idaho Falls?

Finding the right flight to Idaho Falls from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho Falls quick and easy, saving you time and money.

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

Yes. All flights to Idaho Falls from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Idaho Falls from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Idaho Falls from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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