$178 Cheap Flights from Moline (MLI) to Washington (DCA)

View $178 flight on Fri, May 30, 2025Opens in a new window

Popular airlines from Quad City Intl. Airport (MLI) to Ronald Reagan Washington National Airport (DCA)

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Find available prices by choosing your travel dates.

Cheap Flights from Moline to Washington (MLI-DCA)

Prices were available within the past 7 days and start at $178 for one-way flights and $329 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, May 24 - Sat, Aug 30
MLI
Moline
DCA
Washington
$329 Roundtrip, found 1 day ago
$329
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, May 24 from Moline to Washington, returning Sat, Aug 30, priced at $329 found 1 day ago
American Airlines
Sat, May 24 - Sat, Aug 30
MLI
Moline
DCA
Washington
$342 Roundtrip, found 1 day ago
$342
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, May 24 from Moline to Washington, returning Sat, Aug 30, priced at $342 found 1 day ago
American Airlines
Sat, May 24 - Sat, Aug 30
MLI
Moline
DCA
Washington
$349 Roundtrip, found 1 day ago
$349
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, May 24 from Moline to Washington, returning Sat, Aug 30, priced at $349 found 1 day ago
Delta
Sat, May 17 - Wed, May 28
MLI
Moline
DCA
Washington
$351 Roundtrip, found 1 hour ago
$351
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, May 17 from Moline to Washington, returning Wed, May 28, priced at $351 found 1 hour ago
United
Wed, Jul 16 - Sat, Jul 26
MLI
Moline
DCA
Washington
$357 Roundtrip, found 6 hours ago
$357
Roundtrip
found 6 hours ago
Select United flight, departing Wed, Jul 16 from Moline to Washington, returning Sat, Jul 26, priced at $357 found 6 hours ago
Delta
Wed, Aug 13 - Thu, Sep 4
MLI
Moline
DCA
Washington
$357 Roundtrip, found 4 days ago
$357
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Aug 13 from Moline to Washington, returning Thu, Sep 4, priced at $357 found 4 days ago
American Airlines
Wed, Jul 2 - Mon, Jul 7
MLI
Moline
DCA
Washington
$358 Roundtrip, found 12 hours ago
$358
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Wed, Jul 2 from Moline to Washington, returning Mon, Jul 7, priced at $358 found 12 hours ago
American Airlines
Sat, May 31 - Tue, Jun 3
MLI
Moline
DCA
Washington
$360 Roundtrip, found 1 day ago
$360
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, May 31 from Moline to Washington, returning Tue, Jun 3, priced at $360 found 1 day ago
Delta
Sat, May 24 - Sat, Aug 30
MLI
Moline
DCA
Washington
$360 Roundtrip, found 1 day ago
$360
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, May 24 from Moline to Washington, returning Sat, Aug 30, priced at $360 found 1 day ago
American Airlines
Sat, Jul 5 - Tue, Jul 8
MLI
Moline
DCA
Washington
$362 Roundtrip, found 1 day ago
$362
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Jul 5 from Moline to Washington, returning Tue, Jul 8, priced at $362 found 1 day ago
Flights from Moline (MLI) to Washington (DCA)
Origin airport
Quad City Intl.
Destination airport
Ronald Reagan Washington National
Airlines serving
American Airlines, Delta, United
Roundtrip price
$329
Distance
732 mi

Moline to Washington Flights

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

The best time to book a flight from Moline to Washington

Sunday is one of the best days to book for cheap flights from Moline 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 Moline 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 Moline to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $178 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 Moline 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 Moline 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 Quad City Intl. Airport (MLI) to Ronald Reagan Washington National Airport (DCA) cost?
Discover the latest flight deals from MLI 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 MLI to DCA?
The cheapest flights from MLI 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 MLI to DCA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from MLI to DCA. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Quad City Intl. Airport (MLI) to Ronald Reagan Washington National Airport (DCA)?
Direct flights from Quad City Intl. Airport (MLI) to Ronald Reagan Washington National Airport (DCA) aren’t available daily, so you’ll have to take a flight with a layover. Explore your options with Expedia’s filters. Enter your travel details and pick either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from MLI to DCA?
Typically you’ll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can change 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 Quad City Intl. Airport (MLI) to Ronald Reagan Washington National Airport (DCA)?
To touch down at Ronald Reagan Washington National Airport (DCA) on schedule, opt for a flight that takes off from Quad City Intl. Airport (MLI) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Quad City Intl. Airport (MLI) to Ronald Reagan Washington National Airport (DCA) last-minute?
Waiting until just before your departure to book your flight from MLI to DCA generally means paying more. While you might find some last-minute deals, they aren’t always guaranteed. Be flexible with your travel plans for the best chance of snagging a bargain.
Is it cheaper to book a MLI to DCA flight and hotel package?
Compared with arranging flights and hotels separately, booking a MLI to DCA flight and hotel package with Expedia could lead to significant savings. What’s more, having it all in one place will take the stress out of travel planning. Simply secure your flights and select from our wide range of stays, then personalize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Quad City Intl. Airport (MLI) to Ronald Reagan Washington National Airport (DCA)?
Typically, you’re able to reschedule or cancel your MLI to DCA flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline’s policies and fees on flight changes, or if you want more information, visit our Customer Service portal.

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*Available to One Key members.