$947 Cheap Flights from Athens (ATH) to Champaign (CMI)

View $947 flight on Mon, Oct 6, 2025Opens in a new window

Popular airlines from Athens Intl. Airport (ATH) to Champaign, IL (CMI-University Of Illinois Urbana-Champaign Williard)

Cheap Flights from Athens to Champaign (ATH-CMI)

Prices were available within the past 7 days and start at $947 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Athens (ATH) to Champaign (CMI)
Origin airport
Eleftherios Venizelos
Destination airport
University Of Illinois Urbana-Champaign Williard
Distance
5553 mi

Athens to Champaign Flights

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

 

The best time to book a flight from Athens to Champaign

Sunday is one of the best days to book for cheap flights from Athens 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 Athens 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 Athens to Champaign in 2025. You can also book with separate airlines for your outbound and return journeys, from $947 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 Athens 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 Athens 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 Eleftherios Venizelos Airport (ATH) to University Of Illinois Urbana-Champaign Williard Airport (CMI) cost?
Lock in a cheap one-way flight from $947 or cheap return flight from Eleftherios Venizelos Airport (ATH) 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 offers on this route.
What is the cheapest month to fly from Eleftherios Venizelos Airport (ATH) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
is the cheapest month to fly from ATH to CMI. Traveling during quieter months is often the key to better flight prices.
What is the cheapest airline that flies from Eleftherios Venizelos Airport (ATH) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
To find the cheapest airline that'll fly you from ATH 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 discover the cheapest flight right away.
How many flights per day from Eleftherios Venizelos Airport (ATH) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
You'll need to take a flight with a layover when traveling from Eleftherios Venizelos Airport (ATH) to University Of Illinois Urbana-Champaign Williard Airport (CMI). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from ATH to CMI?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Eleftherios Venizelos Airport (ATH) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
To avoid potential delays on the Eleftherios Venizelos Airport (ATH) to University Of Illinois Urbana-Champaign Williard Airport (CMI) route, aim to travel before 3 PM. Later departures have a 22% higher chance of cancellation.**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 Eleftherios Venizelos Airport (ATH) to University Of Illinois Urbana-Champaign Williard Airport (CMI) last-minute?
Last-minute bookings from ATH to CMI are typically more expensive. To lock in the lowest rates, start searching for flights as soon as possible. That being said, if your travel plans are flexible, you may land a cheap ticket right before your journey.
Is it cheaper to book an ATH to CMI flight and hotel package?
Compared with arranging hotels and flights separately, booking an ATH to CMI flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place will take the stress out of travel planning. Just pick your flights and select from our extensive range of stays, 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 Eleftherios Venizelos Airport (ATH) to University Of Illinois Urbana-Champaign Williard Airport (CMI)?
In most instances, you can reschedule or cancel your ATH to CMI flight. However, additional fees may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you want further information, go to our Customer Service portal.

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*Available to One Key members.