Cheap flights from Chicago to Idaho Falls

Chicago FSS
CHI
Idaho Falls
IDA

Flight deals from Chicago to Idaho Falls

Below you can see the best deals on flights Chicago — Idaho Falls for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 24 October, from $144.

Top 10 cheap flights from Chicago to Idaho Falls

F9
DL
DL
$ 299

Chicago — Idaho Falls

21:20—10:50
29 Aug 2026
14 h 30 m
2 stops
F9
DL
DL
$ 301

Chicago — Idaho Falls

21:20—10:50
26 Aug 2026
14 h 30 m
2 stops
DL
DL
DL
DL
$ 310

Chicago — Idaho Falls

13:50—10:50
31 Aug 2026
22 h
3 stops
DL
DL
DL
$ 310

Chicago — Idaho Falls

06:00—14:35
29 Aug 2026
9 h 35 m
2 stops
DL
DL
DL
$ 310

Chicago — Idaho Falls

14:30—22:32
29 Aug 2026
9 h 2 m
2 stops
DL
DL
$ 310

Chicago — Idaho Falls

16:45—22:32
29 Aug 2026
6 h 47 m
1 stop
DL
DL
AS
AS
$ 314

Chicago — Idaho Falls

13:50—13:24
31 Aug 2026
24 h 34 m
3 stops
AS
AS
$ 316

Chicago — Idaho Falls

15:43—22:56
27 Aug 2026
8 h 13 m
1 stop
AS
AS
$ 316

Chicago — Idaho Falls

15:43—22:56
28 Aug 2026
8 h 13 m
1 stop
AA
$ 330

Chicago — Idaho Falls

10:35—13:09
29 Aug 2026
3 h 34 m
Direct flight

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Chicago — Idaho Falls flight

Looking for cheap flights from Chicago to Idaho Falls? Compare fares from different airlines, check the flight schedule and travel time — and book your Chicago — Idaho Falls ticket online at the best price.

The route has direct flights — around 16 flights per week, flights are operated by American Airlines, United Airlines, a nonstop flight takes about 3 h 33 min, the distance between the cities is around 2,001 km.

Planning your trip? You may find our Idaho Falls travel guide, how to get from the airport into town and Idaho Falls weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $144Min. price
OctoberCheapest
AugustPeak season
YesDirect flights
2,001 kmDistance
3 h 33 minTravel time
2Airlines
16 / wkFlights

Flight schedule from Chicago to Idaho Falls

The table shows direct flights from Chicago to Idaho Falls on the selected date. The flight takes approximately 3 h 33 min. Regular flights are operated by American Airlines and United Airlines. Departures from O'Hare International Airport, Chicago Midway International Airport and Midway International Airport airports, arrivals at Idaho Falls Regional Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 26 Aug 2026

Flight ticket prices by day: Chicago — Idaho Falls

Below is a calendar of the lowest flight ticket prices for Chicago — Idaho Falls by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $144 in October, and the most expensive are around $303 in August. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Chicago to Idaho Falls by month. Tickets are usually cheapest in February (around $195) and priciest in July (about $269) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$214lowMay$232mediumSep$242medium
Feb$195lowJun$260highOct$232medium
Mar$223mediumJul$269highNov$251high
Apr$214lowAug$223lowDec$260high

Some values are estimated based on seasonality.

When to fly

Weather in Idaho Falls: it is warmest in July (up to 32 °C on average) and coolest in January (around 0 °C). The driest month is July.

Tickets are usually cheapest in October and most expensive in August. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Idaho Falls

Dry and wet days · Idaho Falls

Wind speed and direction · Idaho Falls

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How to get the best deal on a Chicago — Idaho Falls ticket

  • Book ahead: fares for Chicago — Idaho Falls are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • Chicago is served by more than one airport — compare fares and travel time to each before you book.
  • The cheapest month to fly to Idaho Falls is usually October — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Chicago — Idaho Falls route are operated by 2 airlines; American Airlines runs the most flights (around 88% of all flights). Compare carriers, flight shares and schedules below.

  • American AirlinesAA
    5x/week
    WebsiteFleet: 965211M pax/year
    • Direct flight ORD → IDA5x/week
      Duration
      3h 30m
      Days
      MTWTFSS
    87.5%Open →
  • United AirlinesUA
    1x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight ORD → IDA1x/week
      Duration
      3h 38m
      Days
      MTWTFSS
    12.5%Open →

Cities and airports on the Chicago — Idaho Falls route

Flights Chicago — Idaho Falls depart from O'Hare International Airport, Chicago Midway International Airport, Midway International Airport and Chicago Rockford International Airport and arrive at Idaho Falls Regional Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Chicago

CHI
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

Idaho Falls

IDA
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the Chicago — Idaho Falls flight

How long is the flight from Chicago to Idaho Falls?

A nonstop Chicago — Idaho Falls flight takes about 3 h 33 min — the distance between the cities is around 2,001 km.

How far is it from Chicago to Idaho Falls?

The distance from Chicago to Idaho Falls is about 2,001 km, which a nonstop flight covers in around 3 h 33 min.

Are there direct flights from Chicago to Idaho Falls?

Yes, there are nonstop flights Chicago — Idaho Falls — around 16 flights per week.

Which airlines fly from Chicago to Idaho Falls?

Airlines operating Chicago — Idaho Falls include American Airlines, United Airlines. See the full list with schedules in the "Airlines" section on this page.

Which airports do Chicago — Idaho Falls flights use?

Flights from Chicago depart from O'Hare International Airport, Chicago Midway International Airport, Midway International Airport, and arrive at Idaho Falls Regional Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Chicago to Idaho Falls?

The price of a Chicago — Idaho Falls ticket depends on your travel date, season and demand: it is usually cheapest to fly in October, and most expensive in August. Tickets typically cost between $144 and $303. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Chicago — Idaho Falls?

Flights Chicago — Idaho Falls are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is October. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Chicago to Idaho Falls?

To catch a low fare Chicago — Idaho Falls, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually October.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Chicago

See all
New York CityTorontoDetroitWashington, D.C.AtlantaMinneapolisLos AngelesSeattleBostonDallasHoustonOrlandoDenverNashvilleLondonIndianapolisSan DiegoMontrealMilwaukeeSt. LouisCharlottePhiladelphiaColumbusKansas CityMiamiPhoenixLas VegasCincinnatiGrand RapidsDes MoinesRaleighSan FranciscoMadisonDaytonGreen BayTampaPittsburghLouisvilleKnoxvilleRochester

Where else you can fly from Idaho Falls

See all
SeattleDenverSalt Lake CityDallasPortlandPhoenixMissoulaTri-CitiesRenoRapid CityGreat FallsLas VegasManhattanCheyenne

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