$99 Cheap Flights from Boise (BOI) to Chicago (ORD)

View $99 flight on Sat, Aug 30, 2025Opens in a new window

Popular airlines from Boise Airport (BOI) to Chicago O'Hare Intl. Airport (ORD)

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Cheap Flights from Boise to Chicago (BOI-ORD)

Prices were available within the past 7 days and start at $99 for one-way flights and $165 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Nov 19 - Wed, Nov 19
BOI
Boise
ORD
Chicago
$165 Roundtrip, found 5 days ago
$165
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Nov 19 from Boise to Chicago, returning Wed, Nov 19, priced at $165 found 5 days ago
Southwest Airlines
Mon, Aug 25 - Tue, Aug 26
BOI
Boise
ORD
Chicago
$176 Roundtrip, found 5 days ago
$176
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Mon, Aug 25 from Boise to Chicago, returning Tue, Aug 26, priced at $176 found 5 days ago
Southwest Airlines
Fri, Aug 15 - Wed, Aug 20
BOI
Boise
ORD
Chicago
$179 Roundtrip, found 5 days ago
$179
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Fri, Aug 15 from Boise to Chicago, returning Wed, Aug 20, priced at $179 found 5 days ago
Spirit Airlines
Mon, Aug 18 - Mon, Aug 25
BOI
Boise
ORD
Chicago
$188 Roundtrip, found 23 hours ago
$188
Roundtrip
found 23 hours ago
Select Spirit Airlines flight, departing Mon, Aug 18 from Boise to Chicago, returning Mon, Aug 25, priced at $188 found 23 hours ago
United
Wed, Sep 24 - Tue, Sep 30
BOI
Boise
ORD
Chicago
$189 Roundtrip, found 6 days ago
$189
Roundtrip
found 6 days ago
Select United flight, departing Wed, Sep 24 from Boise to Chicago, returning Tue, Sep 30, priced at $189 found 6 days ago
Spirit Airlines
Fri, Sep 26 - Mon, Sep 29
BOI
Boise
ORD
Chicago
$205 Roundtrip, just found
$205
Roundtrip
just found
Select Spirit Airlines flight, departing Fri, Sep 26 from Boise to Chicago, returning Mon, Sep 29, priced at $205 just found
Alaska Airlines
Wed, Sep 10 - Sat, Sep 13
BOI
Boise
ORD
Chicago
$210 Roundtrip, found 3 hours ago
$210
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Wed, Sep 10 from Boise to Chicago, returning Sat, Sep 13, priced at $210 found 3 hours ago
Delta
Tue, Sep 2 - Mon, Sep 8
BOI
Boise
ORD
Chicago
$210 Roundtrip, found 2 hours ago
$210
Roundtrip
found 2 hours ago
Select Delta flight, departing Tue, Sep 2 from Boise to Chicago, returning Mon, Sep 8, priced at $210 found 2 hours ago
Bargain Flight
Wed, Oct 8 - Wed, Oct 15
BOI
Boise
ORD
Chicago
$213 Roundtrip, found 13 hours ago
$213
Roundtrip
found 13 hours ago
Select Bargain Flight flight, departing Wed, Oct 8 from Boise to Chicago, returning Wed, Oct 15, priced at $213 found 13 hours ago
Hawaiian Airlines
Tue, Sep 30 - Tue, Oct 14
BOI
Boise
ORD
Chicago
$214 Roundtrip, found 6 hours ago
$214
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Tue, Sep 30 from Boise to Chicago, returning Tue, Oct 14, priced at $214 found 6 hours ago

Find the cheapest month to fly from Boise (BOI) to Chicago (ORD)

October is typically the cheapest month to fly

From $119 - $286 per traveler.

Graph displaying average flight prices per month

Alternative airports near Chicago

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Midway Intl. MDW. Closest option available. Average driving time to city center is 16 minutes. Flights from $702
MDW
Midway Intl.
Closest
Average driving time to city center16 min
Flights from $702
Flights from Boise (BOI) to Chicago (ORD)
Origin airport
Boise
Destination airport
O'Hare Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$164
Distance
1433 mi
Average flight time
5 hours 44 mins

Boise to Chicago Flights

The cheapest times to fly from Boise to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boise to Chicago are during the month of November. You can find some of the cheapest flights from Boise to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boise to Chicago

Sunday is one of the best days to book for cheap flights from Boise to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boise to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boise to Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from $99 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boise to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boise to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Boise Airport (BOI) to O'Hare Intl. Airport (ORD) cost?
Snag cheap return fares starting at $151 from Boise Airport (BOI) to O'Hare Intl. Airport (ORD). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a American Airlines flight leaving BOI on August 19 2025 and touching down at ORD. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from BOI to ORD?
The cheapest flights from BOI to ORD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Boise Airport (BOI) to O'Hare Intl. Airport (ORD)?
You can fly straight from Boise Airport (BOI) to O'Hare Intl. Airport (ORD) on a United Airlines flight.
What is the cheapest airline that flies from BOI to ORD?
Jet off from BOI to ORD with United. This carrier currently has the lowest one-way fare for this route, starting at $76. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BOI on September 27 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Boise Airport (BOI) to O'Hare Intl. Airport (ORD)?
On average, Boise Airport (BOI) only offers 1 nonstop flight to O'Hare Intl. Airport (ORD) per day. To explore more options, try our easy-to-use filters. Simply enter your travel dates, then select "1 Stop" or "2+ Stops" to discover flights offering layovers.
What are the most popular departure times for flights from Boise Airport (BOI) to O'Hare Intl. Airport (ORD)?
Flights between BOI and ORD tend to be busiest at 12 PM. If you'd like a more relaxed trip and potentially cheaper prices, look for a departure that's outside typical rush times.
What day of the week has the most flights from BOI to ORD?
Friday offers the most flights from Boise Airport (BOI) to O'Hare Intl. Airport (ORD). Consider traveling on this day and you'll have a greater chance of finding a schedule that works for you.
What is the earliest flight from Boise Airport (BOI) to O'Hare Intl. Airport (ORD)?
Hop on the earliest flight at around 8:00AM UTC-7, departing from Boise Airport (BOI). You'll be flying for about 3h 45m, reaching O'Hare Intl. Airport (ORD) at approximately 12:45PM UTC-6.
How long does it take to fly from Boise Airport (BOI) to O'Hare Intl. Airport (ORD)?
Flights from BOI to ORD have an average travel time of 3 hours and 45 minutes. The total distance between the two airports is 1,450 mi.
What airline has the least delays from BOI to ORD?
Consider traveling with Alaska Airlines if you'd like to go straight from Boise Airport (BOI) to O'Hare Intl. Airport (ORD) without any interruptions. This carrier has the best track record for punctuality, with an on-time performance of 82%. Want to get notified of any changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Boise Airport (BOI) to O'Hare Intl. Airport (ORD)?
Book a flight from Boise Airport (BOI) to O'Hare Intl. Airport (ORD) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Chicago from Boise Airport (BOI)?
Explore your flight options from Boise Airport (BOI) to O'Hare Intl. Airport (ORD). This is the only airport in Chicago you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Boise Airport (BOI) to O'Hare Intl. Airport (ORD) last-minute?
Last-minute fares from BOI to ORD are generally more expensive. To lock in the lowest rates, start searching for flights early. That being said, if your travel plans are flexible, you may score a cheap ticket right before you leave.
Is it cheaper to book a BOI to ORD flight and hotel package?
Booking a BOI to ORD flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our wide range of hotels and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boise Airport (BOI) to O'Hare Intl. Airport (ORD)?
If you reserved your BOI to ORD flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

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