$66 Find Cheap Flights from Idaho to Chicago

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Chicago departing on 2/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago

Travelers love KAYAK
41 299 237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$183
Overall average: $308
Frontier
Thu 2/19Thu 2/26
BOI - ORD • 1 stop
Cheapest non-stop
$249
Typical prices: $389-$420
American Airlines
Wed 2/11Wed 2/18
BOI - ORD • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Chicago!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Idaho to Chicago

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho to Chicago that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Idaho to Chicago

Thu, Feb 19 - Thu, Feb 26
Frontier Logo
12:36 pm - 11:14 pm
BOI
-
ORD
9h 38m
1 stop
Frontier Logo
4:42 pm - 11:11 am
ORD
-
BOI
19h 29m
2 stops
$183Frontier
Thu, Feb 19 - Thu, Feb 26
Frontier Logo
12:36 pm - 11:14 pm
BOI
-
ORD
9h 38m
1 stop
Frontier Logo
4:16 pm - 11:11 am
ORD
-
BOI
19h 55m
1 stop
$191Frontier
Thu, Feb 19 - Sun, Feb 22
Multiple Airlines Logo
12:36 pm - 11:14 pm
BOI
-
ORD
9h 38m
1 stop
Multiple Airlines Logo
12:56 pm - 4:51 pm
ORD
-
BOI
28h 55m
1 stop
$204Multiple Airlines
Thu, Feb 19 - Wed, Feb 25
Multiple Airlines Logo
12:22 pm - 11:14 pm
GEG
-
ORD
8h 52m
1 stop
Multiple Airlines Logo
5:29 pm - 11:59 pm
ORD
-
GEG
8h 30m
1 stop
$228Multiple Airlines
Wed, Feb 25 - Wed, Mar 4
Alaska Airlines Logo
7:00 am - 11:59 pm
BOI
-
ORD
15h 59m
1 stop
Alaska Airlines Logo
5:29 pm - 11:59 pm
ORD
-
BOI
7h 30m
1 stop
$229Alaska Airlines
Sat, May 2 - Wed, May 6
Alaska Airlines Logo
5:00 pm - 6:40 am
GEG
-
ORD
11h 40m
1 stop
Alaska Airlines Logo
3:52 pm - 10:20 pm
ORD
-
GEG
8h 28m
1 stop
$237Alaska Airlines
Tue, Feb 17 - Thu, Feb 19
Southwest Logo
12:30 pm - 10:25 pm
BOI
-
MDW
8h 55m
1 stop
Southwest Logo
7:55 am - 6:25 pm
MDW
-
BOI
11h 30m
1 stop
$246Southwest
Tue, Feb 17 - Thu, Feb 19
Southwest Logo
7:45 am - 7:35 pm
BOI
-
MDW
10h 50m
2 stops
Southwest Logo
7:55 am - 6:25 pm
MDW
-
BOI
11h 30m
1 stop
$251Southwest
Wed, Feb 18 - Wed, Feb 25
American Airlines Logo
12:25 pm - 6:08 pm
GEG
-
ORD
3h 43mnonstop
American Airlines Logo
9:45 am - 11:44 am
ORD
-
GEG
3h 59mnonstop
$256American Airlines
Thu, Feb 5 - Mon, Feb 9
American Airlines Logo
1:42 pm - 6:15 pm
JAC
-
ORD
3h 33mnonstop
American Airlines Logo
9:58 am - 12:21 pm
ORD
-
JAC
3h 23mnonstop
$328American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$66
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Boise to Chicago O'Hare Airport

FAQs for booking flights from Idaho to Chicago

  • How does KAYAK find such low prices on flights from Idaho to Chicago?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Idaho to Chicago.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho to Chicago?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from Idaho is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Idaho to Chicago?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back to Idaho with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho to Chicago?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
Saint Joseph
Hammond
Portage
Lansing
Valparaiso
Chesterton
Schererville
Munster
Porter
Monticello
Griffith
Saint John

Everything you need to know for your flight to Chicago

Cabin class types available on flights to Idaho

Cabin classes available on flights to Chicago. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to Chicagofrom $1,373
Business Class flights to Chicagofrom $1,188
Premium Economy Class flights to Chicagofrom $1,426
Economy Class flights to Chicagofrom $274