$352 Cheap Flights from Boise (BOI) to Champaign (CMI)

View $352 flight on Sat, Jul 12, 2025Opens in a new window

Popular airlines from Boise Airport (BOI) to Champaign, IL (CMI-University Of Illinois Urbana-Champaign Williard)

Cheap Flights from Boise to Champaign (BOI-CMI)

Prices were available within the past 7 days and start at $352 for one-way flights and $451 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Dec 15 - Wed, Dec 31
BOI
Boise
CMI
Champaign
$451 Roundtrip, found 6 days ago
$451
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Dec 15 from Boise to Champaign, returning Wed, Dec 31, priced at $451 found 6 days ago
American Airlines
Sat, Jul 19 - Tue, Jul 22
BOI
Boise
CMI
Champaign
$453 Roundtrip, found 2 days ago
$453
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Jul 19 from Boise to Champaign, returning Tue, Jul 22, priced at $453 found 2 days ago
American Airlines
Mon, Dec 15 - Wed, Dec 31
BOI
Boise
CMI
Champaign
$470 Roundtrip, found 6 days ago
$470
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Dec 15 from Boise to Champaign, returning Wed, Dec 31, priced at $470 found 6 days ago
American Airlines
Wed, Jul 23 - Mon, Jul 28
BOI
Boise
CMI
Champaign
$477 Roundtrip, found 1 day ago
$477
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jul 23 from Boise to Champaign, returning Mon, Jul 28, priced at $477 found 1 day ago
American Airlines
Wed, Jul 23 - Mon, Jul 28
BOI
Boise
CMI
Champaign
$496 Roundtrip, found 5 days ago
$496
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Jul 23 from Boise to Champaign, returning Mon, Jul 28, priced at $496 found 5 days ago
American Airlines
Sat, Jul 19 - Tue, Jul 22
BOI
Boise
CMI
Champaign
$499 Roundtrip, found 2 days ago
$499
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Jul 19 from Boise to Champaign, returning Tue, Jul 22, priced at $499 found 2 days ago
American Airlines
Sat, Jul 19 - Tue, Aug 5
BOI
Boise
CMI
Champaign
$504 Roundtrip, found 14 hours ago
$504
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Sat, Jul 19 from Boise to Champaign, returning Tue, Aug 5, priced at $504 found 14 hours ago
American Airlines
Sat, Jul 19 - Wed, Aug 6
BOI
Boise
CMI
Champaign
$514 Roundtrip, found 14 hours ago
$514
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Sat, Jul 19 from Boise to Champaign, returning Wed, Aug 6, priced at $514 found 14 hours ago
American Airlines
Fri, Jul 18 - Mon, Jul 21
BOI
Boise
CMI
Champaign
$520 Roundtrip, found 4 days ago
$520
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Jul 18 from Boise to Champaign, returning Mon, Jul 21, priced at $520 found 4 days ago
American Airlines
Fri, Sep 5 - Sat, Sep 20
BOI
Boise
CMI
Champaign
$521 Roundtrip, found 5 days ago
$521
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Sep 5 from Boise to Champaign, returning Sat, Sep 20, priced at $521 found 5 days ago

Alternative airports near Champaign

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

Select flight to University Of Illinois Urbana-Champaign Williard CMI. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $453
CMI
University Of Illinois Urbana-Champaign Williard
CheapestClosest
Average driving time to city center11 min
Flights from $453
Flights from Boise (BOI) to Champaign (CMI)
Origin airport
Boise
Destination airport
University Of Illinois Urbana-Champaign Williard
Airlines serving
American Airlines
Roundtrip price
$451
Distance
1453 mi

Boise to Champaign Flights

The cheapest times to fly from Boise to Champaign

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 Champaign are during the month of December. You can find some of the cheapest flights from Boise to Champaign with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boise to Champaign

Sunday is one of the best days to book for cheap flights from Boise to Champaign: 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 Champaign

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 Champaign in 2025. You can also book with separate airlines for your outbound and return journeys, from $352 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 Champaign 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 Champaign 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 University Of Illinois Urbana-Champaign Williard Airport (CMI) cost?
Discover the latest flight deals from BOI to CMI by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BOI to CMI?
The cheapest flights from BOI to CMI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BOI to CMI?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BOI to CMI. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Boise Airport (BOI) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
There aren't any daily nonstop flights departing from Boise Airport (BOI) to University Of Illinois Urbana-Champaign Williard Airport (CMI). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from BOI to CMI?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change depending on a range of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boise Airport (BOI) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
To land at University Of Illinois Urbana-Champaign Williard Airport (CMI) on schedule, choose a flight that takes off from Boise Airport (BOI) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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.
Is it cheaper to buy a plane ticket from Boise Airport (BOI) to University Of Illinois Urbana-Champaign Williard Airport (CMI) last-minute?
Last-minute fares from BOI to CMI are typically more expensive. To secure the lowest rates, start searching for flights well ahead of time. That being said, if you can play around with your travel dates, you may score a cheap ticket just before your departure.
Is it cheaper to book a BOI to CMI flight and hotel package?
Compared with arranging hotels and flights separately, booking a BOI to CMI flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place will take the stress out of travel planning. Simply pick your flights and select from our wide range of hotels, then personalize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Boise Airport (BOI) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
Typically, you can reschedule or cancel your BOI to CMI flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further information, visit our Customer Service portal.

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*Available to One Key members.