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

View $100 flight on Sat, Aug 30, 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 (IAD) to Moline (MLI)

Prices were available within the past 7 days and start at $100 for one-way flights and $224 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Aug 30 - Tue, Sep 2
IAD
Washington
MLI
Moline
$224 Roundtrip, found 1 day ago
$224
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 30 from Washington to Moline, returning Tue, Sep 2, priced at $224 found 1 day ago
United
Wed, Aug 27 - Sat, Aug 30
IAD
Washington
MLI
Moline
$225 Roundtrip, found 4 hours ago
$225
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Aug 27 from Washington to Moline, returning Sat, Aug 30, priced at $225 found 4 hours ago
United
Wed, Aug 27 - Sat, Aug 30
IAD
Washington
MLI
Moline
$228 Roundtrip, found 4 hours ago
$228
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Aug 27 from Washington to Moline, returning Sat, Aug 30, priced at $228 found 4 hours ago
United
Wed, Aug 27 - Sat, Aug 30
IAD
Washington
MLI
Moline
$235 Roundtrip, found 4 hours ago
$235
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Aug 27 from Washington to Moline, returning Sat, Aug 30, priced at $235 found 4 hours ago
United
Wed, Aug 27 - Sat, Aug 30
IAD
Washington
MLI
Moline
$246 Roundtrip, found 4 hours ago
$246
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Aug 27 from Washington to Moline, returning Sat, Aug 30, priced at $246 found 4 hours ago
United
Sun, Aug 24 - Sat, Aug 30
IAD
Washington
MLI
Moline
$250 Roundtrip, found 1 day ago
$250
Roundtrip
found 1 day ago
Select United flight, departing Sun, Aug 24 from Washington to Moline, returning Sat, Aug 30, priced at $250 found 1 day ago
Flights from Washington (IAD) to Moline (MLI)
Origin airport
Washington Dulles Intl.
Destination airport
Quad City Intl.
Airlines serving
American Airlines, Delta, United
Popular airline
United
Distance
709 mi

Frequently asked questions

How much is a United Airlines flight from Washington Dulles Intl. Airport (IAD) to Quad City Intl. Airport (MLI)?
You'll discover cheap round-trip United Airlines flights from $224 from IAD to MLI by filtering your results from "Price (lowest to highest)" on Expedia. Or search for deals from $100 for a one-way trip.**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 IAD to MLI with United Airlines?
January is one of the least expensive months to fly to Moline with United Airlines. You could also find great prices on one-way and round-trip fares in February.
What is the cheapest time to book flights from Washington Dulles Intl. Airport (IAD) to Quad City Intl. Airport (MLI) with United Airlines?
Search for affordable United Airlines flights from Washington Dulles Intl. Airport (IAD) to Quad City Intl. Airport (MLI) one to three months before your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and itinerary, the best day of the week to book a domestic flight is usually Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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 Washington Dulles Intl. Airport (IAD) to Quad City Intl. Airport (MLI)?
To see if there's a direct trip from IAD to MLI with United Airlines or another airline, use our "Nonstop" filter when browsing for flights.
What is the earliest United Airlines flight from IAD to MLI?
To find the earliest departures from IAD to MLI with United Airlines, filter your results by "Early Morning" and "Morning." Choosing an early flight usually means cancellations are less likely.**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?
United Airlines flights from Washington Dulles Intl. Airport (IAD) to Moline come in to Quad City Intl. Airport (MLI). This is the main gateway to this destination.
Why fly with United Airlines from IAD to MLI?
A rewarding loyalty program and the chance to rack up points through United Mileage Plus are the start of the reasons to jet off from IAD to MLI with United Airlines. Plus, when you sign up to 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 your next adventure.*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 Washington Dulles Intl. Airport (IAD) to Quad City Intl. Airport (MLI)?
Depending on the type of ticket you purchased, a fee typically applies if you change or cancel your flight more than 24 hours after it's confirmed. To find flexible fares, select our "No cancel fee" or "Changes included" filter while searching for flights. To learn more about canceling or modifying your reservation, visit "Trips," select your flight and click on "Manage Booking."

Explore a world of travel with Expedia

*Available to One Key members.