$122 Find Cheap Flights from Idaho Falls to Chicago - Compare and Save

Among airlines operating Idaho Falls to Chicago flights:

• American Airlines: offers extra legroom; offers free seat selection
• United Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

2 airlines operate flights between Idaho Falls and Chicago. The airlines offering nonstop flights on this route include:
• American Airlines
• United Airlines

Flights from Idaho Falls to Chicago usually depart from Idaho Falls Fanning Field (IDA) and may arrive at several airports in Chicago area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD).

Here are some options for this route, based on selected ticket types and cabin classes:

• American Airlines: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Only Economy Class is available on flights from Idaho Falls to Chicago.

On this route, nonstop and layover fares are close on average, with nonstop at $465 round-trip and layover options via Seattle/Tacoma Intl (SEA) at $468.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

One-stop flights from Idaho Falls to Chicago most commonly connect through:

• Denver Intl (DEN) - 67% of one-stop connections
• Salt Lake City (SLC) - 23% of one-stop connections
• Seattle/Tacoma Intl (SEA) - 9% of one-stop connections

Denver Intl (DEN) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 24% on the Idaho Falls to Chicago route. Thursday is the cheapest departure day at $426 round-trip on average, while Saturday is the most expensive at $554, a difference of $128. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Afternoon is the busiest departure period on Idaho Falls to Chicago flights, with 100% of flights leaving in that window. Morning departures account for 0%, evening flights for 0%, and night flights for 0%.

Some of the most popular sights in Chicago are Magnificent Mile, Grant Park and River North. These are among the most viewed places in Chicago on KAYAK.

A nonstop flight from Idaho Falls to Chicago takes 3h 36m, covering 1,241 miles.

These are the earliest and latest flight times available from Idaho Falls to Chicago:

• Earliest: departs at 12:20 pm and lands at 3:56 pm
• Latest: departs at 2:19 pm and lands at 5:55 pm.

The flight takes about 3h 36m.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $281 to $2,725. That means the highest observed fare was about 10x higher than the lowest one.

One-way fares from Idaho Falls to Chicago are currently lower than usual. Average one-way flight prices are about $226, which is 31% below the typical average for this route.

Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 5h 52m, compared with 6h 28m via Denver Intl (DEN) and 8h 46m via Seattle/Tacoma Intl (SEA).

Chicago is 1 hour ahead of Idaho Falls (Central Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

Since Chicago is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
Near Chicago O'Hare Intl Airport (ORD) — daily rates from around $17:

· Routes Car & Truck Rentals
· Europcar
· Hertz
· Dollar
· Ace

Near Chicago Midway Airport (MDW) — daily rates from around $32:

· Hertz
· Dollar
· Budget
· Alamo
· Rent-A-Wreck

Near Chicago Greater Rockford Airport (RFD) — daily rates from around $30:

· Alamo
· Enterprise Rent-A-Car
· Budget
· Avis
· National

Round-trip flights from Idaho Falls to Chicago range from $395 to $564, with an average of $469 over the past 12 months. Anything below $395 counts as a good deal.

American Airlines is the only airline on the Idaho Falls to Chicago route offering in-flight Wi-Fi. Pricing depends on fare class.