Cheap Flights from Champaign (CMI) to St. Augustine (UST)

Popular airlines from Champaign, IL (CMI-University Of Illinois Urbana-Champaign Williard) to St. Augustine, FL (UST-Northeast Florida Regional)

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Frequently asked questions

How much does a flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Northeast Florida Regional Airport (UST) cost?
Lock in a cheap one-way flight or cheap return flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Northeast Florida Regional Airport (UST) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Northeast Florida Regional Airport (UST)?
is the least expensive month to fly from CMI to UST. Planning your trip for the off-season is often the key to finding a great deal.
What is the cheapest airline that flies from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Northeast Florida Regional Airport (UST)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest CMI to UST flight.
How many flights per day from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Northeast Florida Regional Airport (UST)?
You'll need to catch a flight with a layover if you're traveling from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Northeast Florida Regional Airport (UST). Direct flights don't operate daily on this route. However, simply 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 CMI to UST?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on a range of factors, including the season 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 University Of Illinois Urbana-Champaign Williard Airport (CMI) to Northeast Florida Regional Airport (UST)?
Book a flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Northeast Florida Regional Airport (UST) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures after this hour have a 22% higher chance of being canceled, on average.**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 University Of Illinois Urbana-Champaign Williard Airport (CMI) to Northeast Florida Regional Airport (UST) last-minute?
Booking your plane ticket from CMI to UST shortly before your journey is typically more expensive. But if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a CMI to UST flight and hotel package?
Compared with arranging flights and hotels separately, booking a CMI to UST flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place takes the hassle out of planning your trip. Just secure your flights and select from our extensive range of hotels, then tailor your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Northeast Florida Regional Airport (UST)?
Generally, it's possible to reschedule or cancel your CMI to UST flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
University Of Illinois Urbana-Champaign Williard
Destination airport
Northeast Florida Regional
Distance
797 mi

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Champaign to St. Augustine Flights

The cheapest times to fly from Champaign to St. Augustine

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

 

The best time to book a flight from Champaign to St. Augustine

Sunday is one of the best days to book for cheap flights from Champaign to St. Augustine: 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 Champaign to St. Augustine

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 Champaign to St. Augustine in 2026. You can also book with separate airlines for your outbound and return journeys, from 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 Champaign to St. Augustine 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 Champaign to St. Augustine 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.

 

Champaign to St. Augustine Flights

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*Available to One Key members.