$148 Cheap Flights from San Juan (SJU) to Champaign (CMI)

View $148 flight on Sat, Jan 17, 2026Opens in a new window

Popular airlines from Luis Munoz Marin Intl. Airport (SJU) to Champaign, IL (CMI-University Of Illinois Urbana-Champaign Williard)

Cheap Flights from San Juan to Champaign (SJU-CMI)

Prices were available within the past 7 days and start at $148 for one-way flights and $420 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Nov 12 - Sun, Nov 16
SJU
San Juan
CMI
Champaign
$420 Roundtrip, found 6 days ago
$420
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Nov 12 from San Juan to Champaign, returning Sun, Nov 16, priced at $420 found 6 days ago
American Airlines
Wed, Nov 12 - Sun, Nov 16
SJU
San Juan
CMI
Champaign
$479 Roundtrip, found 6 days ago
$479
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Nov 12 from San Juan to Champaign, returning Sun, Nov 16, priced at $479 found 6 days ago
American Airlines
Wed, Nov 12 - Sun, Nov 16
SJU
San Juan
CMI
Champaign
$512 Roundtrip, found 6 days ago
$512
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Nov 12 from San Juan to Champaign, returning Sun, Nov 16, priced at $512 found 6 days ago
American Airlines
Wed, Nov 12 - Sun, Nov 16
SJU
San Juan
CMI
Champaign
$529 Roundtrip, found 6 days ago
$529
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Nov 12 from San Juan to Champaign, returning Sun, Nov 16, priced at $529 found 6 days ago

Frequently asked questions

How much does a flight from Luis Munoz Marin Intl. Airport (SJU) to University Of Illinois Urbana-Champaign Williard Airport (CMI) cost?
Snag a cheap one-way flight from $148 or cheap return flight from $420 from Luis Munoz Marin Intl. Airport (SJU) to University Of Illinois Urbana-Champaign Williard Airport (CMI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Luis Munoz Marin Intl. Airport (SJU) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
The cheapest month to fly from SJU to CMI is November, when demand is low. Off-peak season is usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Luis Munoz Marin Intl. Airport (SJU) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from SJU to CMI. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Luis Munoz Marin Intl. Airport (SJU) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
There are no daily nonstop flights available from Luis Munoz Marin Intl. Airport (SJU) to University Of Illinois Urbana-Champaign Williard Airport (CMI). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from SJU to CMI?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on a number 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 Luis Munoz Marin Intl. Airport (SJU) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
To avoid possible delays on the Luis Munoz Marin Intl. Airport (SJU) to University Of Illinois Urbana-Champaign Williard Airport (CMI) route, travel before 3 PM. Departures after this hour have a 22% higher chance of being 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 Luis Munoz Marin Intl. Airport (SJU) to University Of Illinois Urbana-Champaign Williard Airport (CMI) last-minute?
Holding off until right before your break to book a ticket from SJU to CMI generally means paying more. While you may find some last-minute discounts, they're not always guaranteed. Be flexible with your travel plans to maximize your chances of scoring a bargain.
Is it cheaper to book a SJU to CMI flight and hotel package?
Booking a SJU to CMI flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our impressive range of hotels and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Luis Munoz Marin Intl. Airport (SJU) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
Typically, you can modify or cancel your SJU to CMI flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you need further details, head to our Customer Service portal.

Travel information

Origin airport
Luis Munoz Marin Intl.
Destination airport
University Of Illinois Urbana-Champaign Williard
Roundtrip price
$420
Distance
1994 mi

Book with confidence

San Juan to Champaign Flights

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

 

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

Sunday is one of the best days to book for cheap flights from San Juan 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 Juan 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 Juan to Champaign in 2025. You can also book with separate airlines for your outbound and return journeys, from $148 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 Juan 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 Juan 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 Juan to Champaign Flights

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*Available to One Key members.