$342 Cheap Flights from San José (SJO) to Champaign (CMI)

View $342 flight on Wed, Jan 21, 2026Opens in a new window

Popular airlines from Juan Santamaria Intl. Airport (SJO) to Champaign, IL (CMI-University Of Illinois Urbana-Champaign Williard)

Cheap Flights from San José to Champaign (SJO-CMI)

Prices were available within the past 7 days and start at $342 for one-way flights and $521 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Nov 25 - Sun, Nov 30
SJO
San José
CMI
Champaign
$521 Roundtrip, found 6 hours ago
$521
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, Nov 25 from San José to Champaign, returning Sun, Nov 30, priced at $521 found 6 hours ago
American Airlines
Tue, Nov 25 - Sun, Nov 30
SJO
San José
CMI
Champaign
$523 Roundtrip, found 6 hours ago
$523
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, Nov 25 from San José to Champaign, returning Sun, Nov 30, priced at $523 found 6 hours ago
American Airlines
Tue, Nov 25 - Sun, Nov 30
SJO
San José
CMI
Champaign
$525 Roundtrip, found 6 hours ago
$525
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, Nov 25 from San José to Champaign, returning Sun, Nov 30, priced at $525 found 6 hours ago
American Airlines
Fri, Oct 24 - Mon, Oct 27
SJO
San José
CMI
Champaign
$525 Roundtrip, found 5 days ago
$525
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Oct 24 from San José to Champaign, returning Mon, Oct 27, priced at $525 found 5 days ago
American Airlines
Fri, Oct 24 - Sun, Oct 26
SJO
San José
CMI
Champaign
$526 Roundtrip, found 4 days ago
$526
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Oct 24 from San José to Champaign, returning Sun, Oct 26, priced at $526 found 4 days ago
American Airlines
Fri, Oct 24 - Mon, Oct 27
SJO
San José
CMI
Champaign
$528 Roundtrip, found 5 days ago
$528
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Oct 24 from San José to Champaign, returning Mon, Oct 27, priced at $528 found 5 days ago
American Airlines
Tue, Nov 25 - Sun, Nov 30
SJO
San José
CMI
Champaign
$529 Roundtrip, found 6 hours ago
$529
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, Nov 25 from San José to Champaign, returning Sun, Nov 30, priced at $529 found 6 hours ago
American Airlines
Fri, Oct 24 - Mon, Oct 27
SJO
San José
CMI
Champaign
$538 Roundtrip, found 5 days ago
$538
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Oct 24 from San José to Champaign, returning Mon, Oct 27, priced at $538 found 5 days ago
American Airlines
Fri, Oct 24 - Mon, Oct 27
SJO
San José
CMI
Champaign
$539 Roundtrip, found 5 days ago
$539
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Oct 24 from San José to Champaign, returning Mon, Oct 27, priced at $539 found 5 days ago
American Airlines
Thu, Oct 9 - Mon, Oct 13
SJO
San José
CMI
Champaign
$542 Roundtrip, found 6 days ago
$542
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Oct 9 from San José to Champaign, returning Mon, Oct 13, priced at $542 found 6 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 $738
CMI
University Of Illinois Urbana-Champaign Williard
CheapestClosest
Average driving time to city center11 min
Flights from $738

Frequently asked questions

How much does a flight from Juan Santamaria Intl. Airport (SJO) to University Of Illinois Urbana-Champaign Williard Airport (CMI) cost?
Lock in a cheap one-way flight from $342 or cheap return flight from $521 from Juan Santamaria Intl. Airport (SJO) to University Of Illinois Urbana-Champaign Williard Airport (CMI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Juan Santamaria Intl. Airport (SJO) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
The cheapest month to fly from SJO to CMI is November, when there's less demand. Off-peak season is usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from Juan Santamaria Intl. Airport (SJO) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
To find the cheapest airline flying from SJO to CMI, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Juan Santamaria Intl. Airport (SJO) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
You'll need to take a flight with a layover if you're traveling from Juan Santamaria Intl. Airport (SJO) to University Of Illinois Urbana-Champaign Williard Airport (CMI). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from SJO to CMI?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary based on various factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Juan Santamaria Intl. Airport (SJO) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
Select a flight from Juan Santamaria Intl. Airport (SJO) to University Of Illinois Urbana-Champaign Williard Airport (CMI) that leaves before 3 PM to reduce the likelihood of delays. Later departures 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.
Is it cheaper to buy a plane ticket from Juan Santamaria Intl. Airport (SJO) to University Of Illinois Urbana-Champaign Williard Airport (CMI) last-minute?
Booking your ticket from SJO to CMI shortly before your journey is generally more expensive. However, if you're flexible with your schedule, you could grab a cheap last-minute fare.
Is it cheaper to book a SJO to CMI flight and hotel package?
You'll typically save money by securing a SJO to CMI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After choosing your preferred flights and accommodations, consider other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Juan Santamaria Intl. Airport (SJO) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
It's generally possible to reschedule or cancel your SJO to CMI flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Juan Santamaría Intl.
Destination airport
University Of Illinois Urbana-Champaign Williard
Airlines serving
American Airlines
Roundtrip price
$521
Distance
2090 mi

Book with confidence

Book with confidence

San José to Champaign Flights

The cheapest times to fly from San José 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 San José to Champaign are during the month of November. You can find some of the cheapest flights from San José to Champaign with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San José to Champaign

Sunday is one of the best days to book for cheap flights from San José 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 San José 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 San José to Champaign in 2025. You can also book with separate airlines for your outbound and return journeys, from $342 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 San José 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 San José 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.

 

San José to Champaign Flights

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*Available to One Key members.