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

View $342 flight on Tue, Aug 26, 2025Opens in a new window

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

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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 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from San José (SJO) to Champaign (CMI)
Origin airport
Juan Santamaría Intl.
Destination airport
University Of Illinois Urbana-Champaign Williard
Distance
2090 mi

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 . 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.

 

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 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 , 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.

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