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$555+ Cheap flights from Reagan-National (DCA) to Waterloo, IA (ALO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — ALO
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
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Cheap flight deals from Reagan-National to Waterloo

Cheapest flights from Reagan-National to Waterloo
Explore the most affordable flight options available from Reagan-National to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

This American Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/105:24 pm
DCA
-
ALO
1 stop7h 35m
American Airlines
Sun 7/123:09 pm
ALO
-
DCA
1 stop4h 50m
American Airlines
Deal found 2/10$555

Find flight deals from Reagan-National to Waterloo

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Waterloo (ALO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 13, 2026.

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FlightHub
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FlightHub
3 stars

Round-trip from

$555
(American Airlines)
Provider with most accurate pricing for Washington, D.C. (WAS)-Waterloo flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Waterloo flights.
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From Washington, D.C. Reagan-National to Waterloo
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National to Waterloo 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, Cheapflights users made 2,558,603 searches. Data last updated February 13, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Waterloo that are best for you.

Fly from

Reagan-National

Fly to

Waterloo

Route

Depart

Return

Price

Washington, D.C.Waterloo

DCA - ALO

DCAALO

Washington, D.C. Reagan-National

Fri 7/10

5:24 pm-11:59 pm

1 stop7h 35m

Waterloo

Sun 7/12

3:09 pm-8:59 pm

1 stop4h 50m

$555

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Best time to book a flight from Reagan-National to Waterloo

Have a flexible travel schedule? Discover the best time to fly to Waterloo from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Waterloo

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Waterloo, Iowa?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Waterloo, Iowa (average of $217). Flying from Washington, D.C. Reagan-National Airport to Waterloo, Iowa in December is currently the most expensive (average of $349). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Waterloo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Waterloo from Washington, D.C. Reagan-National?

    Most people fly into Waterloo (ALO) if they book a flight to Waterloo from Washington, D.C. Reagan-National. On average, Waterloo has 0 inbound flights from Washington, D.C. Reagan-National per day from 0 airlines. Waterloo is conveniently located just 5.3 mi from Waterloo’s city center.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Waterloo, Iowa?

    For as low as $555, American Airlines can have you in Waterloo, Iowa from Washington, D.C. Reagan-National Airport in 7h 35m. Washington, D.C. Reagan-National Airport and Waterloo, Iowa are separated by a distance of 842 mi.

  • Can I find deals for flights from Reagan-National to Waterloo that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Waterloo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Waterloo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Waterloo.

  • Can I find deals for business class flights from Reagan-National to Waterloo?

    Yes. Cheapflights offers flight deals from Reagan-National to Waterloo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Waterloo, Iowa?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Waterloo, Iowa (average of $217). Flying from Washington, D.C. Reagan-National Airport to Waterloo, Iowa in December is currently the most expensive (average of $349). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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