IAD - MLI

$249 Find Cheap Flights from Washington Dulles Airport to Moline

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Moline departing on 6/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Moline

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Moline, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Moline, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$251
Overall average: $530
United Airlines
Sat 1/24Tue 1/27
IAD - MLI • 1 stop
Cheapest one-way
$249
Delta
Tue 6/23
IAD - MLI • 1 stop
Top airlines
United Airlines
Cheapest • from $251 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 29% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Moline!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Moline (IAD-MLI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Moline that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Moline

Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
5:17 pm - 9:36 pm
IAD
-
MLI
5h 19m1 stop
United Airlines Logo
10:47 am - 4:00 pm
MLI
-
IAD
4h 13m1 stop
$251United Airlines
Sat, Jan 24 - Mon, Jan 26
American Airlines Logo
5:46 pm - 9:33 pm
IAD
-
MLI
4h 47m1 stop
American Airlines Logo
11:00 am - 9:17 pm
MLI
-
IAD
9h 17m1 stop
$260American Airlines
Fri, Jun 12 - Mon, Jun 15
Delta Logo
6:00 am - 10:26 am
IAD
-
MLI
5h 26m1 stop
Delta Logo
5:00 pm - 12:09 am
MLI
-
IAD
6h 09m1 stop
$269Delta
Mon, Feb 2 - Sat, Feb 7
Delta Logo
3:42 pm - 10:33 pm
IAD
-
MLI
7h 51m1 stop
Delta Logo
5:51 am - 11:43 am
MLI
-
IAD
4h 52m1 stop
$279Delta
Fri, Jun 12 - Fri, Jun 19
Delta Logo
6:00 am - 10:26 am
IAD
-
MLI
5h 26m1 stop
Delta Logo
5:00 pm - 12:09 am
MLI
-
IAD
6h 09m1 stop
$289Delta
Fri, Jun 12 - Mon, Jun 15
Delta Logo
6:00 am - 10:26 am
IAD
-
MLI
5h 26m1 stop
Delta Logo
5:00 pm - 12:09 am
MLI
-
IAD
6h 09m1 stop
$294Delta
Wed, Mar 4 - Mon, Mar 9
Delta Logo
10:08 am - 4:16 pm
IAD
-
MLI
7h 08m1 stop
Delta Logo
5:15 pm - 12:31 am
MLI
-
IAD
6h 16m1 stop
$295Delta
Wed, Mar 4 - Mon, Mar 9
American Airlines Logo
11:30 am - 11:28 pm
IAD
-
MLI
12h 58m2 stops
American Airlines Logo
3:31 pm - 10:53 pm
MLI
-
IAD
6h 22m1 stop
$300American Airlines
Fri, Jan 9 - Mon, Jan 12
United Airlines Logo
1:05 pm - 4:54 pm
IAD
-
MLI
4h 49m1 stop
United Airlines Logo
10:47 am - 5:35 pm
MLI
-
IAD
5h 48m1 stop
$309United Airlines
Sun, Feb 1 - Sat, Feb 7
Delta Logo
3:42 pm - 10:33 pm
IAD
-
MLI
7h 51m1 stop
Delta Logo
5:51 am - 11:43 am
MLI
-
IAD
4h 52m1 stop
$314Delta
Booking Insights

KAYAK's insights & trends for Dulles Intl to Moline flights

Get data-powered insights and trends into flights from Dulles Intl to Moline to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Moline?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Moline, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Moline is October, where tickets cost $299 (return) on average. On the other hand, the most expensive months are February and November, where the average cost of round-trip tickets is $627 and $624 respectively.

Good to know

Low seasonJanuary
Cheapest flight$249
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Washington Dulles Airport to Moline

When to book flights from Dulles Intl to Moline

Are your dates flexible? Find out the best times to travel from Dulles Intl to Moline based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Moline flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Moline?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Moline was $332 for a one-way ticket and $251 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Moline?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Washington Dulles Airport to Moline?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Moline, also known as Moline Quad-City.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Moline?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Moline?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Moline.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Moline?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Moline.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Moline?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Moline from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Moline?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Moline with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and MLI can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Moline?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Moline from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Dulles Intl to Moline

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Moline. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Moline? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9122 reviews
6.6Food
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

Sat next to a one year old. She crawled all over the place and made me laugh.

10.0 ExcellentAnonymous, Dec 2025
IAD - VIE
Read more United Airlines reviews

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Everything you need to know for your flight from Dulles Intl to Moline

Information on your arrival and departure airports