$235 Cheap Flights from Champaign (CMI) to Washington (DCA)

View $235 flight on Tue, May 27, 2025Opens in a new window

Popular airlines from Champaign, IL (CMI-University Of Illinois Urbana-Champaign Williard) to Ronald Reagan Washington National Airport (DCA)

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Find available prices by choosing your travel dates.

Cheap Flights from Champaign to Washington (CMI-DCA)

Prices were available within the past 7 days and start at $235 for one-way flights and $288 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, May 1 - Sun, May 4
CMI
Champaign
DCA
Washington
$288 Roundtrip, found 6 days ago
$288
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, May 1 from Champaign to Washington, returning Sun, May 4, priced at $288 found 6 days ago
American Airlines
Fri, Jun 6 - Sun, Jun 8
CMI
Champaign
DCA
Washington
$298 Roundtrip, found 1 day ago
$298
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Jun 6 from Champaign to Washington, returning Sun, Jun 8, priced at $298 found 1 day ago
American Airlines
Mon, May 12 - Sat, May 17
CMI
Champaign
DCA
Washington
$303 Roundtrip, found 1 day ago
$303
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, May 12 from Champaign to Washington, returning Sat, May 17, priced at $303 found 1 day ago
American Airlines
Thu, May 8 - Mon, May 12
CMI
Champaign
DCA
Washington
$308 Roundtrip, found 8 hours ago
$308
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, May 8 from Champaign to Washington, returning Mon, May 12, priced at $308 found 8 hours ago
American Airlines
Thu, May 1 - Sun, May 4
CMI
Champaign
DCA
Washington
$328 Roundtrip, found 4 days ago
$328
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, May 1 from Champaign to Washington, returning Sun, May 4, priced at $328 found 4 days ago
American Airlines
Fri, Apr 25 - Mon, Apr 28
CMI
Champaign
DCA
Washington
$348 Roundtrip, found 5 days ago
$348
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Apr 25 from Champaign to Washington, returning Mon, Apr 28, priced at $348 found 5 days ago
American Airlines
Thu, May 8 - Mon, May 12
CMI
Champaign
DCA
Washington
$353 Roundtrip, found 5 days ago
$353
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, May 8 from Champaign to Washington, returning Mon, May 12, priced at $353 found 5 days ago
American Airlines
Thu, May 1 - Sun, May 4
CMI
Champaign
DCA
Washington
$358 Roundtrip, found 6 days ago
$358
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, May 1 from Champaign to Washington, returning Sun, May 4, priced at $358 found 6 days ago
American Airlines
Thu, May 1 - Sun, May 4
CMI
Champaign
DCA
Washington
$363 Roundtrip, found 6 days ago
$363
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, May 1 from Champaign to Washington, returning Sun, May 4, priced at $363 found 6 days ago
American Airlines
Fri, Jun 6 - Mon, Jun 9
CMI
Champaign
DCA
Washington
$368 Roundtrip, found 5 hours ago
$368
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Fri, Jun 6 from Champaign to Washington, returning Mon, Jun 9, priced at $368 found 5 hours ago
Flights from Champaign (CMI) to Washington (DCA)
Origin airport
University Of Illinois Urbana-Champaign Williard
Destination airport
Ronald Reagan Washington National
Airlines serving
American Airlines
Roundtrip price
$288
Distance
603 mi

Champaign to Washington Flights

The cheapest times to fly from Champaign to Washington

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

The best time to book a flight from Champaign to Washington

Sunday is one of the best days to book for cheap flights from Champaign to Washington: 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 Washington

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 Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $235 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 Washington 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 Washington 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 University Of Illinois Urbana-Champaign Williard Airport (CMI) to Ronald Reagan Washington National Airport (DCA) cost?
Discover the latest flight deals from CMI to DCA by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from CMI to DCA?
The cheapest flights from CMI to DCA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from CMI to DCA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from CMI to DCA. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Ronald Reagan Washington National Airport (DCA)?
You’ll have to take a flight with a layover if you’re traveling from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Ronald Reagan Washington National Airport (DCA). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from CMI to DCA?
You’ll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*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 Ronald Reagan Washington National Airport (DCA)?
Select a flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Ronald Reagan Washington National Airport (DCA) that leaves before 3 PM to reduce the likelihood of delays. Later departures 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 Ronald Reagan Washington National Airport (DCA) last-minute?
Last-minute bookings from CMI to DCA are typically more expensive. To lock in the best rates, start searching for flights well ahead of time. That said, if you’re flexible with your travel dates, you may find a cheap ticket just before your departure.
Is it cheaper to book a CMI to DCA flight and hotel package?
You’ll generally save money by booking a CMI to DCA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s simple to manage it all in one place. Once you’ve selected your ideal flights and accommodations, consider adding extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Ronald Reagan Washington National Airport (DCA)?
Generally, it’s possible to reschedule or cancel your CMI to DCA flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline’s policies in your itinerary to see what changes are allowed and if any costs are involved. You’ll also find more information on our Customer Service portal.

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*Available to One Key members.