What airlines fly to Idaho?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Idaho from Illinois according to our data. United Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 4 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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

Southwest, Delta, and Alaska Airlines are the most popular carriers operating from Illinois to Idaho

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

As of February 2026, 11 flights take off from Illinois and land in Idaho each day. The most common flight departure time for this route is 9:00AM, with 68% of daily flights taking off at noon.

How long is the flight from Illinois to Idaho?

Flight times from Illinois to Idaho vary, but if you’re flying out of Chicago and flying into Boise (one of the most popular routes), then the duration is 3h 41m on average. Another popular route from Illinois to Idaho is flying from Peoria to Boise, which will take roughly 5h 38m. Keep in mind that layovers or delays could extend your travel time.

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

As of February 2026, there are 81 flights per week flying from Illinois to Idaho. The most common day of the week flights depart is Fri, with 19% of flights taking off on this day.

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

Prices for flights from Illinois to Idaho were last updated today.

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

As of February 2026, there are 5 operators available to choose from for flights from Illinois to Idaho.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Idaho.

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

The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$104 Cheap Flights from Illinois to Idaho in 2026

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Find the cheapest flights from Illinois to Idaho

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:46 pm - 9:24 pm

ORD

BOI

9h 38m

1 stop

7:24 am - 4:39 pm

BOI

ORD

8h 15m

1 stop

$213Delta

Sat, May 2 - Tue, May 5

12:46 pm - 8:00 pm

ORD

BOI

8h 14m

1 stop

8:40 pm - 8:01 am

BOI

ORD

10h 21m

2 stops

$218Delta

Sat, May 2 - Tue, May 5

6:00 am - 12:22 pm

ORD

BOI

7h 22m

1 stop

4:15 pm - 11:59 pm

BOI

ORD

6h 44m

1 stop

$223Alaska Airlines

Wed, Apr 15 - Wed, Apr 15

6:00 am - 1:52 pm

ORD

BOI

8h 52m

1 stop

2:57 pm - 11:59 pm

BOI

ORD

8h 02m

1 stop

$229Alaska Airlines

Wed, Apr 22 - Tue, Apr 28

6:30 am - 10:15 am

MDW

GEG

5h 45m

1 stop

5:35 pm - 5:00 am

GEG

MDW

9h 25m

1 stop

$238Southwest

Tue, Apr 7 - Mon, Apr 13

9:00 am - 1:21 pm

STL

JAC

5h 21m

1 stop

2:35 pm - 8:54 pm

JAC

STL

5h 19m

1 stop

$249United Airlines

Wed, Mar 25 - Wed, Apr 1

9:54 am - 12:49 pm

ORD

BOI

3h 55mnonstop

1:29 pm - 6:16 pm

BOI

ORD

3h 47mnonstop

$249American Airlines

Sat, May 2 - Tue, May 5

9:54 am - 12:18 pm

ORD

JAC

3h 24mnonstop

1:44 pm - 5:57 pm

JAC

ORD

3h 13mnonstop

$250American Airlines

Tue, Mar 24 - Tue, Mar 31

8:55 am - 11:24 am

ORD

JAC

3h 29mnonstop

4:15 pm - 12:30 am

JAC

ORD

7h 15m

1 stop

$260United Airlines

Tue, Mar 24 - Tue, Mar 31

6:55 am - 2:10 pm

MDW

GEG

9h 15m

1 stop

2:25 pm - 11:20 pm

GEG

MDW

6h 55m

1 stop

$262Southwest

Fri, Apr 24 - Wed, Apr 29

Southwest flights from Illinois to Idaho

Our best Southwest deals on Illinois to Idaho flight tickets

Southwest

Apr 7

MDW6:30 amChicago Midway

5h 45m

1 stop

GEG10:15 amSpokane

Apr 13

GEG5:35 pmSpokane

9h 25m

1 stop

MDW5:00 amChicago Midway

$238

Southwest

Apr 8

ORD11:55 amChicago O'Hare Intl

11h 15m

2 stops

BOI10:10 pmBoise Air Term. Gowen Fld

Apr 15

BOI6:00 amBoise Air Term. Gowen Fld

6h 55m

1 stop

ORD1:55 pmChicago O'Hare Intl

$251

Southwest

Apr 8

ORD11:55 amChicago O'Hare Intl

11h 15m

2 stops

BOI10:10 pmBoise Air Term. Gowen Fld

Apr 15

BOI6:00 amBoise Air Term. Gowen Fld

11h 50m

2 stops

ORD6:50 pmChicago O'Hare Intl

$256

United Airlines flights from Illinois to Idaho

Our best United Airlines deals on Illinois to Idaho flight tickets

United Airlines

Mar 25

STL9:00 amLambert-St Louis

5h 21m

1 stop

JAC1:21 pmJackson Hole

Apr 1

JAC2:35 pmJackson Hole

5h 19m

1 stop

STL8:54 pmLambert-St Louis

$249

United Airlines

May 2

ORD4:40 pmChicago O'Hare Intl

3h 53m

BOI7:33 pmBoise Air Term. Gowen Fld

May 5

BOI4:20 pmBoise Air Term. Gowen Fld

7h 39m

1 stop

ORD12:59 amChicago O'Hare Intl

$259

United Airlines

Mar 24

ORD8:55 amChicago O'Hare Intl

3h 29m

JAC11:24 amJackson Hole

Mar 31

JAC4:15 pmJackson Hole

7h 15m

1 stop

ORD12:30 amChicago O'Hare Intl

$260

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Sat 5/2

12:46 pm-9:24 pm

1 stop9h 38m

Boise Air Term. Gowen Fld

Tue 5/5

7:24 am-4:39 pm

1 stop8h 15m

$213

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Sat 5/2

12:46 pm-8:00 pm

1 stop8h 14m

Boise Air Term. Gowen Fld

Tue 5/5

8:40 pm-8:01 am

2 stops10h 21m

$218

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Wed 4/15

6:00 am-12:22 pm

1 stop7h 22m

Boise Air Term. Gowen Fld

Wed 4/15

4:15 pm-11:59 pm

1 stop6h 44m

$223

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Wed 4/22

6:00 am-1:52 pm

1 stop8h 52m

Boise Air Term. Gowen Fld

Tue 4/28

2:57 pm-11:59 pm

1 stop8h 02m

$229

ChicagoSpokane

MDW - GEG

MDWGEG

Chicago Midway

Tue 4/7

6:30 am-10:15 am

1 stop5h 45m

Spokane

Mon 4/13

5:35 pm-5:00 am

1 stop9h 25m

$238

St. LouisJackson

STL - JAC

STLJAC

Lambert-St Louis

Wed 3/25

9:00 am-1:21 pm

1 stop5h 21m

Jackson Hole

Wed 4/1

2:35 pm-8:54 pm

1 stop5h 19m

$249

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Sat 5/2

9:54 am-12:49 pm

Nonstop3h 55m

Boise Air Term. Gowen Fld

Tue 5/5

1:29 pm-6:16 pm

Nonstop3h 47m

$249

ChicagoJackson

ORD - JAC

ORDJAC

Chicago O'Hare Intl

Tue 3/24

9:54 am-12:18 pm

Nonstop3h 24m

Jackson Hole

Tue 3/31

1:44 pm-5:57 pm

Nonstop3h 13m

$250

ChicagoJackson

ORD - JAC

ORDJAC

Chicago O'Hare Intl

Tue 3/24

8:55 am-11:24 am

Nonstop3h 29m

Jackson Hole

Tue 3/31

4:15 pm-12:30 am

1 stop7h 15m

$260

ChicagoSpokane

MDW - GEG

MDWGEG

Chicago Midway

Fri 4/24

6:55 am-2:10 pm

1 stop9h 15m

Spokane

Wed 4/29

2:25 pm-11:20 pm

1 stop6h 55m

$262

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 Illinois to Idaho

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 Idaho?

In general, October is the cheapest month to fly from Illinois to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $300. If you don’t want to visit Idaho in October, then you should wait until February to fly from Illinois, when ticket prices are also cheap, with an average price of $306.

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

Our data shows that Wednesday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $358. On the other hand, Sunday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $519.

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

According to our data, the cheapest time of day to fly to Idaho is in the morning. momondo users have found flights departing from Illinois to Idaho in the morning for as low as $392. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Idaho, so prices are often more expensive at around $476 per ticket.

What is the cheapest Illinois to Idaho flight route?

Fly from Chicago O'Hare Intl to Hailey Sun Valley-Friedman for the best Illinois - Idaho flight prices

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

You are more likely to see cheaper flights to Idaho from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $414 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Illinois for as low as $246 on momondo.

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

There are 4 cabin classes available to choose from on Illinois to Idaho 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 Illinois to Idaho flights?

No. A direct flight is the cheapest option for a flight between Illinois to Idaho.

Cheap Illinois to Idaho flight deals and tips

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

Best Price Found	$218
Fastest flight time	3h 15m
Direct flights	Every day
Airports in Idaho	27 airports

The best one-way flight to Idaho from Illinois in the past 72 hours is $218. The best round-trip flight deal from Illinois to Idaho found on momondo in the last 72 hours is $336.

The fastest flight from Illinois to Idaho takes 3h 15m

Direct flights go from Illinois to Idaho every day.

There are 27 airports in Idaho. From Illinois there are direct flights to Idaho Falls Fanning Field (IDA), Jackson Hole (JAC).

Search flight deals

When did momondo last update prices for flights from Illinois to Idaho?
Prices for flights from Illinois to Idaho were last updated today.
How many operators does momondo search for flights from Illinois to Idaho?
As of February 2026, there are 5 operators available to choose from for flights from Illinois to Idaho.
How old do you have to be to fly from Illinois to Idaho?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Illinois to Idaho?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Illinois to Idaho is Embraer 175 (Enhanced Winglets) (41.45% of total bookings). The next most popular plane models are Embraer 175 (22.32%), Canadair (Bombardier) Regional Jet 700 (13.91%), and Airbus A319 (6.67%).

Best airlines flying from Illinois to Idaho

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $174	Free Cancellation	Rating 7.9 8,242 reviews	Search Delta flights
American Airlines	PriceFrom $237	Free Cancellation	Rating 7.2 11,357 reviews	Search American Airlines flights
United Airlines	PriceFrom $248	Free Cancellation	Rating 7.4 9,349 reviews	Search United Airlines flights
Southwest	PriceFrom $254	Free Cancellation	Rating 8.0 4,301 reviews	Search Southwest flights

Why use momondo?

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

It is quick and easy to find Illinois to Idaho flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Idaho that suits you.

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

Flights from Illinois to Idaho with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Idaho from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Illinois to Idaho flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular cities in Idaho

Flights to New Yorkfrom $56

Flights to Los Angelesfrom $52

Flights to Miamifrom $36

Flights to Orlandofrom $56

Flights to Chicagofrom $53

Flights to San Franciscofrom $56

Flights to Las Vegasfrom $30

Flights to Washington, D.C.from $56

Flights to Bostonfrom $75

Flights to Atlantafrom $49

Flights to Dallasfrom $54

Flights to Seattlefrom $48

Cheap flights from Illinois to Idaho from $104

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Idaho departing on 4/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Southwest flights from Illinois to Idaho

Our best Southwest deals on Illinois to Idaho flight tickets

United Airlines flights from Illinois to Idaho

Our best United Airlines deals on Illinois to Idaho flight tickets

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

See travel insights to Idaho from

How to get the cheapest flight ticket from Illinois to Idaho

What is the cheapest month to fly to Idaho?

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

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

What is the cheapest Illinois to Idaho flight route?

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

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

Can stopping save me money on Illinois to Idaho flights?

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

What airlines fly to Idaho?

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

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

How long is the flight from Illinois to Idaho?

Cheap Illinois to Idaho flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Idaho

Best airlines flying from Illinois to Idaho

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

Why use momondo?

An easier way to manage your Idaho 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 Idaho

Popular cities in Idaho

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

Illinois flight routes

According to popular flight searches on momondo this year

Idaho flight routes

According to popular flight searches on momondo this year

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