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

As of September 2025, there are 76 flights per week flying from Illinois to Idaho. The most common day of the week flights depart is Mon, with 25% of flights taking off on this day.

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 43m on average. Another popular route from Illinois to Idaho is flying from Peoria to Boise, which will take roughly 5h 54m. Keep in mind that layovers or delays could extend your travel time.

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

Frontier, 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 52% 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.

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

As of September 2025, 10 flights take off from Illinois and land in Idaho each day. The most common flight departure time for this route is 7:00PM, with 48% of daily flights taking off at noon.

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 September 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.

$93 Cheap Flights from Illinois to Idaho in 2025/26

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Find the cheapest flights from Illinois to Idaho

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:50 am - 11:43 amORD-BOI

5h 53m1 stop

12:28 pm - 11:53 pmBOI-ORD

10h 25m1 stop

$188Frontier

Find Deal

vie., oct. 24 - dom., oct. 26

6:50 am - 11:43 amORD-BOI

5h 53m1 stop

12:28 pm - 9:36 amBOI-ORD

20h 08m1 stop

$193Frontier

Find Deal

vie., oct. 24 - dom., oct. 26

9:30 am - 11:42 amORD-GEG

4h 12mnonstop

11:25 am - 5:02 pmGEG-ORD

3h 37mnonstop

$215United Airlines

Find Deal

mar., oct. 21 - mar., oct. 28

9:20 am - 1:05 pmMDW-GEG

5h 45m1 stop

5:45 am - 1:08 pmGEG-MDW

5h 23m1 stop

$215Delta

Find Deal

mar., oct. 21 - mar., oct. 28

8:57 am - 3:53 pmORD-GEG

8h 56m2 stops

1:15 pm - 11:50 pmGEG-ORD

8h 35m1 stop

$220Delta

Find Deal

mar., oct. 21 - mar., oct. 28

10:30 am - 12:20 pmORD-GEG

3h 50mnonstop

1:12 pm - 7:04 pmGEG-ORD

3h 52mnonstop

$246American Airlines

Find Deal

mar., oct. 14 - sáb., oct. 18

4:05 pm - 6:47 pmORD-BOI

3h 42mnonstop

12:35 pm - 5:08 pmBOI-ORD

3h 33mnonstop

$249United Airlines

Find Deal

sáb., oct. 18 - jue., oct. 23

10:30 am - 12:32 pmORD-GEG

4h 02mnonstop

1:14 pm - 7:12 pmGEG-ORD

3h 58mnonstop

$255American Airlines

Find Deal

jue., nov. 6 - lun., nov. 10

8:25 am - 3:05 pmMDW-BOI

7h 40m1 stop

8:10 pm - 5:05 amBOI-MDW

7h 55m1 stop

$257Southwest

Find Deal

sáb., nov. 1 - vie., nov. 14

7:50 am - 4:35 pmMDW-GEG

10h 45m2 stops

12:55 pm - 10:35 pmGEG-MDW

7h 40m1 stop

$260Southwest

Find Deal

jue., oct. 30 - sáb., nov. 1

Southwest flights from Illinois to Idaho

Our best Southwest deals on Illinois to Idaho flight tickets

Southwest

Nov 1

MDW8:25 amChicago Midway

7h 40m

1 stop

BOI3:05 pmBoise Air Term. Gowen Fld

Nov 14

BOI8:10 pmBoise Air Term. Gowen Fld

7h 55m

1 stop

MDW5:05 amChicago Midway

$257

Find similar

Southwest

Oct 30

MDW7:50 amChicago Midway

10h 45m

2 stops

GEG4:35 pmSpokane

Nov 1

GEG12:55 pmSpokane

7h 40m

1 stop

MDW10:35 pmChicago Midway

$260

Find similar

Southwest

Oct 24

MDW6:25 pmChicago Midway

6h 55m

1 stop

BOI12:20 amBoise Air Term. Gowen Fld

Oct 27

BOI5:40 pmBoise Air Term. Gowen Fld

4h 50m

1 stop

MDW11:30 pmChicago Midway

$269

Find similar

Hawaiian Airlines flights from Illinois to Idaho

Our best Hawaiian Airlines deals on Illinois to Idaho flight tickets

Hawaiian Airlines

Mar 3

ORD7:45 amChicago O'Hare Intl

9h 35m

1 stop

BOI4:20 pmBoise Air Term. Gowen Fld

Mar 4

BOI8:30 pmBoise Air Term. Gowen Fld

7h 34m

1 stop

ORD5:04 amChicago O'Hare Intl

$214

Find similar

Hawaiian Airlines

Oct 22

ORD6:00 amChicago O'Hare Intl

8h 37m

1 stop

GEG12:37 pmSpokane

Oct 26

GEG8:59 pmSpokane

7h 23m

1 stop

ORD6:22 amChicago O'Hare Intl

$231

Find similar

Hawaiian Airlines

Sep 27

STL3:35 pmLambert-St Louis

9h 11m

1 stop

GEG10:46 pmSpokane

Sep 30

GEG9:25 amSpokane

6h 09m

1 stop

STL5:34 pmLambert-St Louis

$716

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

vie. 10/24

6:50 am-11:43 am

1 stop5h 53m

Boise Air Term. Gowen Fld

dom. 10/26

12:28 pm-11:53 pm

1 stop10h 25m

$188

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

vie. 10/24

6:50 am-11:43 am

1 stop5h 53m

Boise Air Term. Gowen Fld

dom. 10/26

12:28 pm-9:36 am

1 stop20h 08m

$193

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

mar. 10/21

9:30 am-11:42 am

Nonstop4h 12m

Spokane

mar. 10/28

11:25 am-5:02 pm

Nonstop3h 37m

$215

ChicagoSpokane

MDW - GEG

MDWGEG

Chicago Midway

mar. 10/21

9:20 am-1:05 pm

1 stop5h 45m

Spokane

mar. 10/28

5:45 am-1:08 pm

1 stop5h 23m

$215

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

mar. 10/21

8:57 am-3:53 pm

2 stops8h 56m

Spokane

mar. 10/28

1:15 pm-11:50 pm

1 stop8h 35m

$220

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

mar. 10/14

10:30 am-12:20 pm

Nonstop3h 50m

Spokane

sáb. 10/18

1:12 pm-7:04 pm

Nonstop3h 52m

$246

ChicagoBoise

ORD - BOI

ORDBOI

Chicago O'Hare Intl

sáb. 10/18

4:05 pm-6:47 pm

Nonstop3h 42m

Boise Air Term. Gowen Fld

jue. 10/23

12:35 pm-5:08 pm

Nonstop3h 33m

$249

ChicagoSpokane

ORD - GEG

ORDGEG

Chicago O'Hare Intl

jue. 11/6

10:30 am-12:32 pm

Nonstop4h 02m

Spokane

lun. 11/10

1:14 pm-7:12 pm

Nonstop3h 58m

$255

ChicagoBoise

MDW - BOI

MDWBOI

Chicago Midway

sáb. 11/1

8:25 am-3:05 pm

1 stop7h 40m

Boise Air Term. Gowen Fld

vie. 11/14

8:10 pm-5:05 am

1 stop7h 55m

$257

ChicagoSpokane

MDW - GEG

MDWGEG

Chicago Midway

jue. 10/30

7:50 am-4:35 pm

2 stops10h 45m

Spokane

sáb. 11/1

12:55 pm-10:35 pm

1 stop7h 40m

$260

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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 $326. 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 $334.

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 $384. 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 $552.

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 $589 per ticket.

What is the cheapest Illinois to Idaho flight route?

Fly from Chicago O'Hare Intl 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 $391 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?

You could potentially save up to 27% on your flight if you consider stops on a Illinois to Idaho flight.

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	$145
Fastest flight time	3h 08m
Direct flights	Every day
Airports in Idaho	2 airports

The best one-way flight to Idaho from Illinois in the past 72 hours is $145. The best round-trip flight deal from Illinois to Idaho found on momondo in the last 72 hours is $269.

The fastest flight from Illinois to Idaho takes 3h 08m

Direct flights go from Illinois to Idaho every day.

There are 2 airports near Idaho: Jackson Hole (JAC), Boise Air Term. Gowen Fld (BOI)

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 September 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) (25.83% of total bookings). The next most popular plane models are Airbus A319 (24.85%), Airbus A320-100/200 (20.97%), and Embraer 175 (9.32%).

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 7,974 reviews	Search Delta flights
American Airlines	PriceFrom $237	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $239	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights
United Airlines	PriceFrom $261	Free Cancellation	Rating 7.4 8,926 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

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Find better results for your trip to Idaho

Popular cities in Idaho

Flights to New Yorkfrom $50

Flights to Los Angelesfrom $44

Flights to Miamifrom $49

Flights to Chicagofrom $60

Flights to Orlandofrom $56

Flights to Las Vegasfrom $44

Flights to San Franciscofrom $60

Flights to Washington, D.C.from $56

Flights to Bostonfrom $67

Flights to Atlantafrom $51

Flights to Dallasfrom $59

Flights to Seattlefrom $102

Cheap flights from Illinois to Idaho from $93

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 11/6. 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

Southwest flights from Illinois to Idaho

Our best Southwest deals on Illinois to Idaho flight tickets

Hawaiian Airlines flights from Illinois to Idaho

Our best Hawaiian 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.

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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 O'Hare Intl 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?

You could potentially save up to 27% on your flight if you consider stops on a Illinois to Idaho flight.

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

Frontier, 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 September 2025, 10 flights take off from Illinois and land in Idaho each day. The most common flight departure time for this route is 7:00PM, with 48% of daily flights taking off at noon.

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

As of September 2025, there are 76 flights per week flying from Illinois to Idaho. The most common day of the week flights depart is Mon, with 25% 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