$100 Cheap United flights Washington (DCA) to Moline (MLI)

View $100 flight on Sun, Aug 31, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$100 Cheap United flights Washington (DCA) to Moline (MLI)

Prices were available within the past 7 days and start at $100 for one-way flights and $225 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Aug 31 - Tue, Sep 2
DCA
Washington
MLI
Moline
$225 Roundtrip, found 22 hours ago
$225
Roundtrip
found 22 hours ago
Select United flight, departing Sun, Aug 31 from Washington to Moline, returning Tue, Sep 2, priced at $225 found 22 hours ago
United
Wed, Aug 27 - Sat, Aug 30
DCA
Washington
MLI
Moline
$228 Roundtrip, found 2 hours ago
$228
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Aug 27 from Washington to Moline, returning Sat, Aug 30, priced at $228 found 2 hours ago
United
Wed, Aug 27 - Sat, Aug 30
DCA
Washington
MLI
Moline
$233 Roundtrip, found 2 hours ago
$233
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Aug 27 from Washington to Moline, returning Sat, Aug 30, priced at $233 found 2 hours ago
United
Sun, Aug 24 - Sat, Aug 30
DCA
Washington
MLI
Moline
$250 Roundtrip, found 12 hours ago
$250
Roundtrip
found 12 hours ago
Select United flight, departing Sun, Aug 24 from Washington to Moline, returning Sat, Aug 30, priced at $250 found 12 hours ago
United
Fri, Nov 7 - Mon, Nov 10
DCA
Washington
MLI
Moline
$251 Roundtrip, found 1 day ago
$251
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 7 from Washington to Moline, returning Mon, Nov 10, priced at $251 found 1 day ago
United
Sat, Nov 15 - Mon, Nov 17
DCA
Washington
MLI
Moline
$253 Roundtrip, found 7 hours ago
$253
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Nov 15 from Washington to Moline, returning Mon, Nov 17, priced at $253 found 7 hours ago
Flights from Washington (DCA) to Moline (MLI)
Origin airport
Ronald Reagan Washington National
Destination airport
Quad City Intl.
Airlines serving
American Airlines, Delta, United
Popular airline
United
Distance
732 mi

Frequently asked questions

How much is a United Airlines flight from Ronald Reagan Washington National Airport (DCA) to Quad City Intl. Airport (MLI)?
Use the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines return flights from $225 from DCA to MLI. Affordable one-way options from $100 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from DCA to MLI with United Airlines?
United Airlines flights to Moline are usually cheaper in the off-peak months of January and February. Whether you're searching for a round-trip or one-way ticket, you could land a better deal then.
What is the cheapest time to book flights from Ronald Reagan Washington National Airport (DCA) to Quad City Intl. Airport (MLI) with United Airlines?
To find cheap United Airlines fares from Ronald Reagan Washington National Airport (DCA) to Quad City Intl. Airport (MLI), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the price you pay. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Ronald Reagan Washington National Airport (DCA) to Quad City Intl. Airport (MLI)?
To find out if there's a direct journey from DCA to MLI with United Airlines or any other airlines, check the "Nonstop" box when looking for tickets.
What is the earliest United Airlines flight from DCA to MLI?
Filter your results by "Morning" and "Early Morning" to see the earliest departures from DCA to MLI. Taking off early means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Moline?
Quad City Intl. Airport (MLI) is the primary Moline gateway for United Airlines flights from Ronald Reagan Washington National Airport (DCA).
Why fly with United Airlines from DCA to MLI?
A rewarding loyalty program and the chance to rack up points through United Mileage Plus are the start of the reasons to leave from DCA to MLI with United Airlines. Plus, when you join Expedia's free One Key™ program, you can receive OneKeyCash™* in addition to United Airlines's loyalty program earnings. It's yours to spend on future travel plans.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Ronald Reagan Washington National Airport (DCA) to Quad City Intl. Airport (MLI)?
Changes are often free within 24 hours of booking, but your airline may charge a fee after that time. For further details about modifying your flights, head to your "Trips," select your flight and click on "Manage Booking." If you'd like the freedom to change your plans without additional charges, tick the "Changes included" or "No cancel fee" filter when planning your next break.
*Available to One Key members.