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

As of July 2025, there are 109 flights per week flying from Illinois to Idaho. The most common day of the week flights depart is Thu, with 18% of flights taking off on this day.

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

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

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 53% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 5 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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 40m on average. Another popular route from Illinois to Idaho is flying from Peoria to Boise, which will take roughly 6h 22m. Keep in mind that layovers or delays could extend your travel time.

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

As of July 2025, 15 flights take off from Illinois and land in Idaho each day. The most common flight departure time for this route is 7:00PM, with 56% of daily flights taking off in the evening.

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 July 2025, 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.

$80 Cheap Flights from Illinois to Idaho in 2025

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Find the cheapest flights from Illinois to Idaho

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

1:15 pm - 3:28 pmORD-JAC

3h 13mnonstop

3:24 pm - 7:39 pmJAC-ORD

3h 15mnonstop

$190American Airlines

Find Deal

Mon, Sep 8 - Wed, Sep 17

1:15 pm - 3:28 pmORD-JAC

3h 13mnonstop

3:19 pm - 7:34 pmJAC-ORD

3h 15mnonstop

$191American Airlines

Find Deal

Mon, Sep 8 - Thu, Sep 11

6:00 pm - 10:51 pmORD-GEG

6h 51m1 stop

6:10 am - 5:49 pmGEG-ORD

9h 39m1 stop

$195Delta

Find Deal

Wed, Oct 22 - Tue, Oct 28

9:20 am - 2:15 pmMDW-BOI

5h 55m1 stop

5:25 am - 1:03 pmBOI-MDW

6h 38m1 stop

$197Delta

Find Deal

Sat, Sep 13 - Sat, Sep 20

4:20 pm - 6:32 pmORD-JAC

3h 12mnonstop

4:20 pm - 11:59 pmJAC-ORD

6h 39m1 stop

$201United Airlines

Find Deal

Mon, Sep 8 - Thu, Sep 11

5:00 am - 9:41 amORD-JAC

5h 41m1 stop

4:20 pm - 11:59 pmJAC-ORD

6h 39m1 stop

$211United Airlines

Find Deal

Mon, Sep 8 - Thu, Sep 11

5:45 pm - 12:08 amORD-BOI

7h 23m1 stop

7:17 pm - 7:03 amBOI-ORD

10h 46m1 stop

$214Alaska Airlines

Find Deal

Tue, Sep 9 - Tue, Sep 16

3:10 pm - 9:30 pmORD-GEG

8h 20m1 stop

5:30 am - 1:05 pmGEG-ORD

5h 35m1 stop

$215Southwest

Find Deal

Sat, Aug 30 - Sat, Sep 6

10:00 am - 4:51 pmORD-GEG

8h 51m1 stop

7:44 pm - 7:03 amGEG-ORD

9h 19m1 stop

$219Alaska Airlines

Find Deal

Wed, Sep 3 - Wed, Sep 3

10:50 am - 12:45 pmMDW-GEG

3h 55mnonstop

12:10 pm - 5:35 pmGEG-MDW

3h 25mnonstop

$235Southwest

Find Deal

Sun, Aug 31 - Mon, Sep 8

Alaska Airlines flights from Illinois to Idaho

Our best Alaska Airlines deals on Illinois to Idaho flight tickets

Alaska Airlines

Sep 9

ORD5:45 pmChicago O'Hare Intl

7h 23m

1 stop

BOI12:08 amBoise Air Term. Gowen Fld

Sep 16

BOI7:17 pmBoise Air Term. Gowen Fld

10h 46m

1 stop

ORD7:03 amChicago O'Hare Intl

$214

Find similar

Alaska Airlines

Sep 3

ORD10:00 amChicago O'Hare Intl

8h 51m

1 stop

GEG4:51 pmSpokane

Sep 3

GEG7:44 pmSpokane

9h 19m

1 stop

ORD7:03 amChicago O'Hare Intl

$219

Find similar

Alaska Airlines

Sep 9

ORD5:45 pmChicago O'Hare Intl

7h 23m

1 stop

BOI12:08 amBoise Air Term. Gowen Fld

Sep 14

BOI8:42 pmBoise Air Term. Gowen Fld

9h 21m

1 stop

ORD7:03 amChicago O'Hare Intl

$224

Find similar

Frontier flights from Illinois to Idaho

Our best Frontier deals on Illinois to Idaho flight tickets

Frontier

Aug 7

ORD5:40 amChicago O'Hare Intl

7h 23m

1 stop

GEG11:03 amSpokane

Aug 12

GEG11:51 amSpokane

10h 41m

1 stop

ORD12:32 amChicago O'Hare Intl

$228

Find similar

Frontier

Sep 17

STL7:55 pmLambert-St Louis

16h 42m

1 stop

BOI11:37 amBoise Air Term. Gowen Fld

Sep 21

BOI12:22 pmBoise Air Term. Gowen Fld

19h 44m

1 stop

STL9:06 amLambert-St Louis

$235

Find similar

Frontier

Aug 6

STL7:29 pmLambert-St Louis

17h 17m

1 stop

BOI11:46 amBoise Air Term. Gowen Fld

Aug 10

BOI12:36 pmBoise Air Term. Gowen Fld

19h 35m

1 stop

STL9:11 amLambert-St Louis

$237

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoJackson

ORD - JAC

ORDJAC

Chicago O'Hare Intl

Mon 9/8

1:15 pm-3:28 pm

Nonstop3h 13m

Jackson Hole

Wed 9/17

3:24 pm-7:39 pm

Nonstop3h 15m

$190

ChicagoJackson

ORD - JAC

ORDJAC

Chicago O'Hare Intl

Mon 9/8

1:15 pm-3:28 pm

Nonstop3h 13m

Jackson Hole

Thu 9/11

3:19 pm-7:34 pm

Nonstop3h 15m

$191

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

Wed 10/22

6:00 pm-10:51 pm

1 stop6h 51m

Spokane

Tue 10/28

6:10 am-5:49 pm

1 stop9h 39m

$195

ChicagoBoise

MDW - BOI

MDWBOI

Chicago Midway

Sat 9/13

9:20 am-2:15 pm

1 stop5h 55m

Boise Air Term. Gowen Fld

Sat 9/20

5:25 am-1:03 pm

1 stop6h 38m

$197

ChicagoJackson

ORD - JAC

ORDJAC

Chicago O'Hare Intl

Mon 9/8

4:20 pm-6:32 pm

Nonstop3h 12m

Jackson Hole

Thu 9/11

4:20 pm-11:59 pm

1 stop6h 39m

$201

ChicagoJackson

ORD - JAC

ORDJAC

Chicago O'Hare Intl

Mon 9/8

5:00 am-9:41 am

1 stop5h 41m

Jackson Hole

Thu 9/11

4:20 pm-11:59 pm

1 stop6h 39m

$211

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

Tue 9/9

5:45 pm-12:08 am

1 stop7h 23m

Boise Air Term. Gowen Fld

Tue 9/16

7:17 pm-7:03 am

1 stop10h 46m

$214

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

Sat 8/30

3:10 pm-9:30 pm

1 stop8h 20m

Spokane

Sat 9/6

5:30 am-1:05 pm

1 stop5h 35m

$215

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

Wed 9/3

10:00 am-4:51 pm

1 stop8h 51m

Spokane

Wed 9/3

7:44 pm-7:03 am

1 stop9h 19m

$219

ChicagoSpokane

MDW - GEG

MDWGEG

Chicago Midway

Sun 8/31

10:50 am-12:45 pm

Nonstop3h 55m

Spokane

Mon 9/8

12:10 pm-5:35 pm

Nonstop3h 25m

$235

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, September 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 $329. If you don’t want to visit Idaho in September, then you should wait until August to fly from Illinois, when ticket prices are also cheap, with an average price of $340.

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

Our data shows that Saturday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $392. On the other hand, Monday 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 $589.

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 at noon. momondo users have found flights departing from Illinois to Idaho at noon for as low as $327. 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 $564 per ticket.

What is the cheapest Illinois to Idaho flight route?

Fly from Chicago Midway to Boise Air Term. Gowen Fld 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 $398 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 $254 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	$80
Fastest flight time	3h 07m
Direct flights	Every day
Airports in Idaho	4 airports

The best one-way flight to Idaho from Illinois in the past 72 hours is $80. The best round-trip flight deal from Illinois to Idaho found on momondo in the last 72 hours is $190.

The fastest flight from Illinois to Idaho takes 3h 07m

Direct flights go from Illinois to Idaho every day.

There are 4 airports near Idaho: Idaho Falls Fanning Field (IDA), Spokane (GEG), Boise Air Term. Gowen Fld (BOI), 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 July 2025, 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) (31.29% of total bookings). The next most popular plane models are Airbus A319 (28.32%), Embraer 175 (17.66%), and Airbus A320-100/200 (8.92%).

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 8.0 7,981 reviews	Search Delta flights
Alaska Airlines	PriceFrom $227	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $237	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $254	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
United Airlines	PriceFrom $268	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 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.

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.

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Find better results for your trip to Idaho

Popular cities in Idaho

Flights to New Yorkfrom $39

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Flights to Chicagofrom $59

Flights to Orlandofrom $54

Flights to Las Vegasfrom $35

Flights to San Franciscofrom $49

Flights to Washington, D.C.from $49

Flights to Bostonfrom $77

Flights to Atlantafrom $29

Flights to Dallasfrom $55

Flights to Seattlefrom $93

Cheap flights from Illinois to Idaho 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 Illinois to Idaho departing on 9/13. 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 Illinois to Idaho

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Alaska Airlines flights from Illinois to Idaho

Our best Alaska Airlines deals on Illinois to Idaho flight tickets

Frontier flights from Illinois to Idaho

Our best Frontier 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

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 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?

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

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

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.

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

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

What airlines fly to Idaho?

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

As of July 2025, 15 flights take off from Illinois and land in Idaho each day. The most common flight departure time for this route is 7:00PM, with 56% of daily flights taking off in the evening.

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

As of July 2025, there are 109 flights per week flying from Illinois to Idaho. The most common day of the week flights depart is Thu, with 18% of flights taking off on this day.

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

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

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

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

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

What is the most popular plane model from Illinois to 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?

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

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

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

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

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