How long is the flight from Idaho to Illinois?

The flight from Idaho to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Idaho Falls (a popular airport in Idaho) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 3h 14m on average. If you fly from Boise (another popular airport in Idaho) to Chicago O'Hare Intl Airport, then the average flight time is 3h 26m.

How many flights depart from Idaho to Illinois on average per day?

The number of flights available between Idaho and Illinois is 20 per day as of July 2025. The most frequent departure time is 12:00PM, with 65% of daily flights leaving in the afternoon.

What is the cheapest airline that flies from Idaho to Illinois?

Spirit Airlines, Hawaiian Airlines, and Alaska Airlines are the most popular carriers operating from Idaho to Illinois

How many flights depart from Idaho to Illinois on average per week?

145 flights are operational weekly from Idaho to Illinois as of July 2025. The most popular departure day for this route is Thu, with 19% of flights per week taking off on this day.

What airlines fly to Illinois?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Illinois from Idaho according to our data. United Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Idaho to Illinois?

Prices for flights from Idaho to Illinois refresh daily.

How many operators does momondo search for flights from Idaho to Illinois?

The number of operators available for flights from Idaho to Illinois is 5 as of July 2025.

How old do you have to be to fly from Idaho to Illinois?

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 Idaho to Illinois.

What documentation or ID do you need to fly to Illinois?

The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$80 Cheap Flights from Idaho to Illinois in 2025

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Find the cheapest flights from Idaho to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

2:16 pm - 4:49 amBOI-ORD

13h 33m1 stop

6:00 am - 8:21 pmORD-BOI

15h 21m1 stop

$161Spirit Airlines

Find Deal

jue., oct. 2 - lun., oct. 6

9:16 pm - 4:49 amBOI-ORD

6h 33m1 stop

6:00 am - 1:21 pmORD-BOI

8h 21m1 stop

$169Spirit Airlines

Find Deal

lun., sep. 8 - jue., sep. 11

3:25 pm - 7:40 pmJAC-ORD

3h 15mnonstop

1:15 pm - 3:28 pmORD-JAC

3h 13mnonstop

$191American Airlines

Find Deal

vie., sep. 5 - lun., sep. 8

1:18 pm - 11:59 pmGEG-ORD

8h 41m1 stop

5:30 pm - 11:13 pmORD-GEG

7h 43m1 stop

$195Delta

Find Deal

sáb., sep. 13 - mié., sep. 17

5:40 am - 1:49 pmBOI-ORD

7h 09m1 stop

2:00 pm - 8:16 pmORD-BOI

7h 16m1 stop

$197Delta

Find Deal

mar., nov. 4 - sáb., nov. 8

1:14 pm - 7:12 pmGEG-ORD

3h 58mnonstop

10:30 am - 12:32 pmORD-GEG

4h 02mnonstop

$197American Airlines

Find Deal

mié., nov. 5 - sáb., nov. 15

6:15 am - 4:05 pmGEG-MDW

7h 50m1 stop

3:50 pm - 10:30 pmMDW-GEG

8h 40m1 stop

$215Southwest

Find Deal

mié., ago. 27 - mié., sep. 3

2:00 pm - 11:05 pmGEG-MDW

7h 05m1 stop

10:50 am - 12:45 pmMDW-GEG

3h 55mnonstop

$225Southwest

Find Deal

sáb., ago. 30 - dom., ago. 31

4:20 pm - 10:42 pmJAC-ORD

5h 22m1 stop

2:53 pm - 8:39 pmORD-JAC

6h 46m1 stop

$230United Airlines

Find Deal

vie., sep. 5 - mié., sep. 10

2:45 pm - 12:45 amBOI-ORD

9h 00m1 stop

8:45 am - 11:31 amORD-BOI

3h 46mnonstop

$236United Airlines

Find Deal

lun., sep. 22 - mié., sep. 24

Alaska Airlines flights from Idaho to Illinois

Our best Alaska Airlines deals on Idaho to Illinois flight tickets

Alaska Airlines

Sep 13

GEG12:39 pmSpokane

9h 25m

1 stop

ORD12:04 amChicago O'Hare Intl

Sep 19

ORD1:01 pmChicago O'Hare Intl

7h 49m

1 stop

GEG6:50 pmSpokane

$204

Find similar

Alaska Airlines

Sep 24

BOI4:34 pmBoise Air Term. Gowen Fld

6h 29m

1 stop

ORD12:03 amChicago O'Hare Intl

Sep 30

ORD8:00 amChicago O'Hare Intl

8h 54m

1 stop

BOI3:54 pmBoise Air Term. Gowen Fld

$214

Find similar

Alaska Airlines

Oct 11

BOI7:13 amBoise Air Term. Gowen Fld

15h 46m

1 stop

ORD11:59 pmChicago O'Hare Intl

Oct 16

ORD3:15 pmChicago O'Hare Intl

8h 50m

1 stop

BOI11:05 pmBoise Air Term. Gowen Fld

$224

Find similar

United Airlines flights from Idaho to Illinois

Our best United Airlines deals on Idaho to Illinois flight tickets

United Airlines

Sep 5

JAC4:20 pmJackson Hole

5h 22m

1 stop

ORD10:42 pmChicago O'Hare Intl

Sep 10

ORD2:53 pmChicago O'Hare Intl

6h 46m

1 stop

JAC8:39 pmJackson Hole

$230

Find similar

United Airlines

Sep 22

BOI2:45 pmBoise Air Term. Gowen Fld

9h 00m

1 stop

ORD12:45 amChicago O'Hare Intl

Sep 24

ORD8:45 amChicago O'Hare Intl

3h 46m

BOI11:31 amBoise Air Term. Gowen Fld

$236

Find similar

United Airlines

Aug 23

BOI12:27 pmBoise Air Term. Gowen Fld

3h 33m

ORD5:00 pmChicago O'Hare Intl

Aug 26

ORD7:35 pmChicago O'Hare Intl

4h 06m

BOI10:41 pmBoise Air Term. Gowen Fld

$237

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

jue. 10/2

2:16 pm-4:49 am

1 stop13h 33m

Chicago O'Hare Intl

lun. 10/6

6:00 am-8:21 pm

1 stop15h 21m

$161

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

lun. 9/8

9:16 pm-4:49 am

1 stop6h 33m

Chicago O'Hare Intl

jue. 9/11

6:00 am-1:21 pm

1 stop8h 21m

$169

JacksonChicago

JAC - ORD

JACORD

Jackson Hole

vie. 9/5

3:25 pm-7:40 pm

Nonstop3h 15m

Chicago O'Hare Intl

lun. 9/8

1:15 pm-3:28 pm

Nonstop3h 13m

$191

SpokaneChicago

GEG - ORD

GEGORD

Spokane

sáb. 9/13

1:18 pm-11:59 pm

1 stop8h 41m

Chicago O'Hare Intl

mié. 9/17

5:30 pm-11:13 pm

1 stop7h 43m

$195

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

mar. 11/4

5:40 am-1:49 pm

1 stop7h 09m

Chicago O'Hare Intl

sáb. 11/8

2:00 pm-8:16 pm

1 stop7h 16m

$197

SpokaneChicago

GEG - ORD

GEGORD

Spokane

mié. 11/5

1:14 pm-7:12 pm

Nonstop3h 58m

Chicago O'Hare Intl

sáb. 11/15

10:30 am-12:32 pm

Nonstop4h 02m

$197

SpokaneChicago

GEG - MDW

GEGMDW

Spokane

mié. 8/27

6:15 am-4:05 pm

1 stop7h 50m

Chicago Midway

mié. 9/3

3:50 pm-10:30 pm

1 stop8h 40m

$215

SpokaneChicago

GEG - MDW

GEGMDW

Spokane

sáb. 8/30

2:00 pm-11:05 pm

1 stop7h 05m

Chicago Midway

dom. 8/31

10:50 am-12:45 pm

Nonstop3h 55m

$225

JacksonChicago

JAC - ORD

JACORD

Jackson Hole

vie. 9/5

4:20 pm-10:42 pm

1 stop5h 22m

Chicago O'Hare Intl

mié. 9/10

2:53 pm-8:39 pm

1 stop6h 46m

$230

BoiseChicago

BOI - ORD

BOIORD

Boise Air Term. Gowen Fld

lun. 9/22

2:45 pm-12:45 am

1 stop9h 00m

Chicago O'Hare Intl

mié. 9/24

8:45 am-11:31 am

Nonstop3h 46m

$236

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to Illinois

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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Idaho is in January. Flight prices, which tend to average around $320, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $323.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Idaho to Illinois is on a Saturday when prices can be found for as low as $555. Flights from Idaho to Illinois on a Sunday will generally be more expensive and average around $902. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Idaho to Illinois during this time can be as low as $428. Flights in the morning are often more expensive with an average ticket price of $756.

What is the cheapest Idaho to Illinois flight route?

Fly from Boise Air Term. Gowen Fld to Chicago Midway for the best Idaho - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $394 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Idaho for as low as $251 on momondo.

What cabin class options are available on Idaho to Illinois flights?

There are 4 cabin classes available to choose from on Idaho to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Idaho to Illinois flights?

You could potentially save up to 36% on your flight if you consider stops on a Idaho to Illinois flight.

Cheap Idaho to Illinois flight deals and tips

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

Best Price Found	$80
Fastest flight time	3h 06m
Direct flights	Every day
Airports in Illinois	2 airports

The best one-way flight to Illinois from Idaho in the past 72 hours is $80. The best round-trip flight deal from Idaho to Illinois found on momondo in the last 72 hours is $161.

The fastest flight from Idaho to Illinois takes 3h 06m

Direct flights go from Idaho to Illinois every day.

There are 2 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)

Search flight deals

When did momondo last update prices for flights from Idaho to Illinois?
Prices for flights from Idaho to Illinois refresh daily.
How many operators does momondo search for flights from Idaho to Illinois?
The number of operators available for flights from Idaho to Illinois is 5 as of July 2025.
How old do you have to be to fly from Idaho to Illinois?
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 Idaho to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Idaho to Illinois?
Based on momondo bookings for flights between Idaho and Illinois, the leading plane model is Embraer 175 (Enhanced Winglets), making up 24.25% of the total bookings. Other popular models include Airbus A319 with 22.95%, Embraer 175 with 15.30%, and Airbus A320-100/200 with 15.30%.

Best airlines flying from Idaho to Illinois

Compare and see reviews for airlines that fly from Idaho to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $139	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Alaska Airlines	PriceFrom $217	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $233	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
American Airlines	PriceFrom $236	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $239	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Illinois?

Finding the right flight to Illinois from Idaho 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 Illinois quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Illinois from Idaho which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Idaho.

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

If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from Idaho and alert you when they change.

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Illinois

Popular cities in Illinois

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Flights to San Franciscofrom $49

Flights to Washington, D.C.from $49

Flights to Bostonfrom $77

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Flights to Dallasfrom $55

Flights to Seattlefrom $93

Cheap flights from Idaho to Illinois from $80

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Illinois departing on 9/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Idaho to Illinois

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Alaska Airlines flights from Idaho to Illinois

Our best Alaska Airlines deals on Idaho to Illinois flight tickets

United Airlines flights from Idaho to Illinois

Our best United Airlines deals on Idaho to Illinois flight tickets

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Use the filters below to find and compare flights from Idaho to Illinois that are best for you.

See travel insights to Illinois from

How to get the cheapest flight ticket from Idaho to Illinois

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 Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Idaho to Illinois during this time can be as low as $428. Flights in the morning are often more expensive with an average ticket price of $756.

What is the cheapest Idaho to Illinois flight route?

Fly from Boise Air Term. Gowen Fld to Chicago Midway for the best Idaho - Illinois flight prices

How far in advance should I book a flight to Illinois?

What cabin class options are available on Idaho to Illinois flights?

There are 4 cabin classes available to choose from on Idaho to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Idaho to Illinois flights?

You could potentially save up to 36% on your flight if you consider stops on a Idaho to Illinois flight.

What is the cheapest airline that flies from Idaho to Illinois?

Spirit Airlines, Hawaiian Airlines, and Alaska Airlines are the most popular carriers operating from Idaho to Illinois

What airlines fly to Illinois?

How many flights depart from Idaho to Illinois on average per day?

The number of flights available between Idaho and Illinois is 20 per day as of July 2025. The most frequent departure time is 12:00PM, with 65% of daily flights leaving in the afternoon.

How many flights depart from Idaho to Illinois on average per week?

145 flights are operational weekly from Idaho to Illinois as of July 2025. The most popular departure day for this route is Thu, with 19% of flights per week taking off on this day.

How long is the flight from Idaho to Illinois?

Cheap Idaho to Illinois flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

When did momondo last update prices for flights from Idaho to Illinois?

How many operators does momondo search for flights from Idaho to Illinois?

How old do you have to be to fly from Idaho to Illinois?

What documentation or ID do you need to fly to Illinois?

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

Best airlines flying from Idaho to Illinois

Compare and see reviews for airlines that fly from Idaho to Illinois with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Illinois?

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

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

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

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo