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Cheap flights from Washington, D.C. Dulles Intl Airport to Waterloo from $511

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Waterloo departing on 2/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Waterloo

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:00 am - 2:45 pm
IAD
-
ALO
10h 45m
2 stops
American Airlines Logo
5:20 am - 1:32 pm
ALO
-
IAD
7h 12m
2 stops
$887American Airlines
Thu, Feb 12 - Mon, Feb 16

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Waterloo, Iowa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Waterloo, Iowa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Waterloo

IAD - ALO

IADALO

Washington, D.C. Dulles Intl

Thu 2/12

5:00 am-2:45 pm

2 stops10h 45m

Waterloo

Mon 2/16

5:20 am-1:32 pm

2 stops7h 12m

$887

Washington, D.C.Waterloo

IAD - ALO

IADALO

Washington, D.C. Dulles Intl

Sun 2/15

2:03 pm-11:53 pm

2 stops10h 50m

$511

Washington, D.C.Waterloo

IAD - ALO

IADALO

Washington, D.C. Dulles Intl

Sun 2/15

5:00 am-2:45 pm

3 stops10h 45m

$705

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Waterloo from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Waterloo, Iowa

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Waterloo?

American Airlines is the most popular carrier operating from Washington, D.C. Dulles Intl to Waterloo

What airlines fly to Waterloo, Iowa?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Waterloo, Iowa from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Waterloo, Iowa. Keep in mind that there are 3 different airlines that fly to Waterloo, Iowa on a routine basis, so you have a few additional options to choose from.

When to book flights from Washington, D.C. Dulles Intl Airport to Waterloo, Iowa

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Waterloo, Iowa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Waterloo, Iowa (IAD to ALO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Waterloo, Iowa

Fastest flight time

10h 45m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Waterloo, Iowa takes 10h 45m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Waterloo, Iowa. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Waterloo, Iowa.
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  • How far is Washington, D.C. Dulles Intl to Waterloo by plane?

    A flight from Washington, D.C. Dulles Intl to Waterloo will travel around 815.6 mi. Typically, this will take 10h 45m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Waterloo Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Waterloo Airport refresh daily.

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Waterloo Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to Waterloo Airport.

  • What documentation or ID do you need to fly to Waterloo Airport?

    The travel and health documents required for your trip to Waterloo Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Waterloo Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Waterloo?

Book flights to Waterloo if you plan to visit one of these locations
Cedar Falls
Iowa Falls

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Waterloo?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Waterloo from Washington, D.C..

Can I find flights from Washington, D.C. to Waterloo with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Waterloo on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Waterloo?

Once all potential Washington, D.C. to Waterloo flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington, D.C. to Waterloo right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Waterloo now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Waterloo and let you know when they change.

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