$146 Cheap Flights from Moline (MLI) to Washington (IAD)

View $146 flight on Tue, May 12, 2026Opens in a new window

Popular airlines from Quad City Intl. Airport (MLI) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Moline to Washington (MLI-IAD)

Prices were available within the past 7 days and start at $146 for one-way flights and $291 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, May 12 - Tue, May 19
MLI
Moline
IAD
Washington
$291 Roundtrip, found 16 hours ago
$291
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Tue, May 12 from Moline to Washington, returning Tue, May 19, priced at $291 found 16 hours ago
American Airlines
Thu, Apr 16 - Tue, Apr 21
MLI
Moline
IAD
Washington
$300 Roundtrip, found 2 days ago
$300
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Apr 16 from Moline to Washington, returning Tue, Apr 21, priced at $300 found 2 days ago
American Airlines
Thu, May 7 - Sun, May 10
MLI
Moline
IAD
Washington
$309 Roundtrip, found 2 days ago
$309
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, May 7 from Moline to Washington, returning Sun, May 10, priced at $309 found 2 days ago
United
Wed, May 6 - Sun, May 10
MLI
Moline
IAD
Washington
$310 Roundtrip, found 22 hours ago
$310
Roundtrip
found 22 hours ago
Select United flight, departing Wed, May 6 from Moline to Washington, returning Sun, May 10, priced at $310 found 22 hours ago
Delta
Wed, Apr 15 - Sat, Apr 18
MLI
Moline
IAD
Washington
$311 Roundtrip, found 2 days ago
$311
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Apr 15 from Moline to Washington, returning Sat, Apr 18, priced at $311 found 2 days ago
United
Thu, Mar 26 - Thu, Apr 2
MLI
Moline
IAD
Washington
$314 Roundtrip, found 5 days ago
$314
Roundtrip
found 5 days ago
Select United flight, departing Thu, Mar 26 from Moline to Washington, returning Thu, Apr 2, priced at $314 found 5 days ago
United
Thu, Apr 16 - Tue, Apr 21
MLI
Moline
IAD
Washington
$320 Roundtrip, found 2 days ago
$320
Roundtrip
found 2 days ago
Select United flight, departing Thu, Apr 16 from Moline to Washington, returning Tue, Apr 21, priced at $320 found 2 days ago
Delta
Tue, May 12 - Tue, May 19
MLI
Moline
IAD
Washington
$326 Roundtrip, found 16 hours ago
$326
Roundtrip
found 16 hours ago
Select Delta flight, departing Tue, May 12 from Moline to Washington, returning Tue, May 19, priced at $326 found 16 hours ago
United
Sat, Jun 27 - Sun, Jul 5
MLI
Moline
IAD
Washington
$329 Roundtrip, found 8 hours ago
$329
Roundtrip
found 8 hours ago
Select United flight, departing Sat, Jun 27 from Moline to Washington, returning Sun, Jul 5, priced at $329 found 8 hours ago
American Airlines
Tue, May 12 - Tue, May 19
MLI
Moline
IAD
Washington
$331 Roundtrip, found 17 hours ago
$331
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Tue, May 12 from Moline to Washington, returning Tue, May 19, priced at $331 found 17 hours ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $339
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $339

Frequently asked questions

How much does a flight from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.) cost?
You can find cheap one-way flights from $146 and cheap return flights from $291 Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.) with Expedia. One-way flights typically cost between $135 and $616, and return flights often range between $338 and $1018. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
April is the cheapest month to fly from Moline (MLI) to Washington, DC (IAD), with average return fares around $293. This price is about 26% lower than the average fare throughout the year, as demand typically decreases after the winter months. Other budget-friendly months include September and November.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
Enter MLI to IAD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
American Airlines is one of the cheapest airlines offering connecting flights from Moline, IL (MLI) to Washington, DC (IAD), with round-trip tickets starting from around $248 with a layover in Dallas-Fort Worth Intl. (DFW). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
To find a cheap flight from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
For travel from Moline (MLI) to Washington, DC (IAD), April and November are the best months to fly. Return flights average around $293, making it an affordable choice. April brings pleasant spring weather, while November offers a quieter atmosphere, perfect for exploring the capital.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
The earliest flight from Quad City International (MLI) to Washington Dulles International (IAD) typically leaves at around 5:00 AM, operated by American Airlines. This seasonal service is active in June, making it a convenient option for early travelers heading to the capital. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
The most popular departure times for flights from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.) are in the early morning, from 6am to 9am. About 48% of passengers prefer this time window. Many major carriers, including United Airlines and American Airlines, offer flights during this window. This timing works well because it allows you to arrive in Washington, DC with a full day ahead of you.
How long does it take to fly from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
Flying from MLI to IAD with a connection usually takes about 4 hours 30 minutes, traveling roughly 710 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
You can fly first class between MLI and IAD. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How do I earn miles on a Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight with Expedia?
It's easy to earn miles on a Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Washington from Quad City Intl. (MLI)?
From Quad City Intl. (MLI), you can fly into Ronald Reagan Washington National (DCA) and Washington Dulles Intl. (IAD) in Washington. Some flights may connect through major hubs like O'Hare Intl. (ORD), Charlotte-Douglas Intl. (CLT), Dallas-Fort Worth Intl. (DFW) before reaching Washington. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.) at the last minute?
Typically, booking a last minute flight from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package?
Securing a Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.) Fairfax County Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
If you booked your Moline, IL (MLI-Quad City Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Quad City Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$290
Distance
709 mi

Book with confidence

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 2026. You can also book with separate airlines for your outbound and return journeys, from $146 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.

 

Moline to Washington Flights

*Flight schedules are subject to change.

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*Available to One Key members.