$181 Find Cheap Flights from Chicago to Idaho Falls - Compare and Save

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

• Earliest: departs at 10:29 am and lands at 2:19 pm
• Latest: departs at 10:30 am and lands at 2:20 pm.

The flight takes about 3h 50m.

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

A nonstop flight from Chicago to Idaho Falls takes 3h 50m, covering 1,241 miles.

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.

Round-trip flights from Chicago to Idaho Falls range from $395 to $524, with an average of $449 over the past 12 months. Anything below $395 counts as a good deal.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $368 round-trip via Seattle/Tacoma Intl (SEA), compared to $490 for nonstop.

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.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $361 to $2,004. That means the highest observed fare was about 6x higher than the lowest one.

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

One-way fares from Chicago to Idaho Falls are currently lower than usual. Average one-way flight prices are about $244, which is 17% below the typical average for this route.

Idaho Falls Fanning Field Airport (IDA) hosts 5 major car rental companies, with daily rates averaging $96 for economy cars. Top options include:

• Alamo
• Hertz
• Enterprise Rent-A-Car
• Budget
• National

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

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

• Denver Intl (DEN) - 65% of one-stop connections
• Salt Lake City (SLC) - 27% of one-stop connections
• Dallas/Fort Worth (DFW) - 2% of one-stop connections
• Chicago O'Hare Intl (ORD) - 2% of one-stop connections

Yes. Flexible dates can save you up to 14% on flights from Chicago to Idaho Falls. Saturday is the cheapest departure day at $431 round-trip on average, while Sunday is the most expensive at $501, a difference of $70.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Only American Airlines operates flights between Chicago and Idaho Falls.

Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 5h 24m, compared with 5h 54m via Denver Intl (DEN) and 6h 56m via Dallas/Fort Worth (DFW).

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

Among airlines operating Chicago to Idaho Falls flights:

• American Airlines: offers free seat selection

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

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

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