$162 Cheap Flights from Idaho Falls (IDA) to Chicago (ORD)

View $162 flight on Sun, Aug 31, 2025Opens in a new window
Find available prices by choosing your travel dates.

Cheap Flights from Idaho Falls to Chicago (IDA-ORD)

Prices were available within the past 7 days and start at $162 for one-way flights and $323 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Oct 2 - Sun, Oct 5
IDA
Idaho Falls
ORD
Chicago
$323 Roundtrip, found 2 hours ago
$323
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Thu, Oct 2 from Idaho Falls to Chicago, returning Sun, Oct 5, priced at $323 found 2 hours ago
American Airlines
Mon, Aug 11 - Fri, Aug 15
IDA
Idaho Falls
ORD
Chicago
$333 Roundtrip, found 22 hours ago
$333
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Mon, Aug 11 from Idaho Falls to Chicago, returning Fri, Aug 15, priced at $333 found 22 hours ago
Bargain Flight
Sat, Oct 25 - Wed, Oct 29
IDA
Idaho Falls
ORD
Chicago
$338 Roundtrip, found 5 days ago
$338
Roundtrip
found 5 days ago
Select Bargain Flight flight, departing Sat, Oct 25 from Idaho Falls to Chicago, returning Wed, Oct 29, priced at $338 found 5 days ago
Alaska Airlines
Wed, Sep 3 - Mon, Sep 8
IDA
Idaho Falls
ORD
Chicago
$338 Roundtrip, found 8 hours ago
$338
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Wed, Sep 3 from Idaho Falls to Chicago, returning Mon, Sep 8, priced at $338 found 8 hours ago
Alaska Airlines
Sat, May 24 - Wed, May 28
IDA
Idaho Falls
ORD
Chicago
$342 Roundtrip, found 11 hours ago
$342
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Sat, May 24 from Idaho Falls to Chicago, returning Wed, May 28, priced at $342 found 11 hours ago
United
Wed, May 21 - Wed, Jun 11
IDA
Idaho Falls
ORD
Chicago
$343 Roundtrip, found 1 hour ago
$343
Roundtrip
found 1 hour ago
Select United flight, departing Wed, May 21 from Idaho Falls to Chicago, returning Wed, Jun 11, priced at $343 found 1 hour ago
Delta
Wed, Jun 18 - Sat, Jun 21
IDA
Idaho Falls
ORD
Chicago
$343 Roundtrip, found 2 hours ago
$343
Roundtrip
found 2 hours ago
Select Delta flight, departing Wed, Jun 18 from Idaho Falls to Chicago, returning Sat, Jun 21, priced at $343 found 2 hours ago
Delta
Tue, Oct 21 - Tue, Oct 28
IDA
Idaho Falls
ORD
Chicago
$345 Roundtrip, found 2 days ago
$345
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 21 from Idaho Falls to Chicago, returning Tue, Oct 28, priced at $345 found 2 days ago
Delta
Tue, Jun 24 - Sat, Jul 12
IDA
Idaho Falls
ORD
Chicago
$348 Roundtrip, found 4 hours ago
$348
Roundtrip
found 4 hours ago
Select Delta flight, departing Tue, Jun 24 from Idaho Falls to Chicago, returning Sat, Jul 12, priced at $348 found 4 hours ago
American Airlines
Mon, Aug 11 - Fri, Aug 15
IDA
Idaho Falls
ORD
Chicago
$351 Roundtrip, found 22 hours ago
$351
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Mon, Aug 11 from Idaho Falls to Chicago, returning Fri, Aug 15, priced at $351 found 22 hours ago
Flights from Idaho Falls (IDA) to Chicago (ORD)
Origin airport
Idaho Falls Regional
Destination airport
O'Hare Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$323
Distance
1226 mi

Idaho Falls to Chicago Flights

The cheapest times to fly from Idaho Falls to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Idaho Falls to Chicago are during the month of October. You can find some of the cheapest flights from Idaho Falls to Chicago with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Idaho Falls to Chicago

Sunday is one of the best days to book for cheap flights from Idaho Falls to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Idaho Falls to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Idaho Falls to Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from $162 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Idaho Falls to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Idaho Falls to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Idaho Falls Regional Airport (IDA) to O'Hare Intl. Airport (ORD) cost?
Discover the latest flight deals from IDA to ORD by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IDA to ORD?
The cheapest flights from IDA to ORD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IDA to ORD?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from IDA to ORD. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Idaho Falls Regional Airport (IDA) to O'Hare Intl. Airport (ORD)?
Direct flights from Idaho Falls Regional Airport (IDA) to O’Hare Intl. Airport (ORD) aren’t available daily, so you’ll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from IDA to ORD?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on a number of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Idaho Falls Regional Airport (IDA) to O'Hare Intl. Airport (ORD)?
Select a flight from Idaho Falls Regional Airport (IDA) to O’Hare Intl. Airport (ORD) that leaves before 3 PM to reduce the likelihood of delays. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Idaho Falls Regional Airport (IDA) to O'Hare Intl. Airport (ORD) last-minute?
Booking your plane ticket from IDA to ORD right before your trip is typically more expensive. However, if there’s some wiggle room with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book an IDA to ORD flight and hotel package?
You’ll typically save money by securing an IDA to ORD flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one place. After selecting your ideal accommodations and flights, consider adding extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Idaho Falls Regional Airport (IDA) to O'Hare Intl. Airport (ORD)?
In most instances, you can cancel or reschedule your IDA to ORD flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline’s policies and fees on flight changes, or if you need further details, go to our Customer Service portal.

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*Available to One Key members.