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$374+ Cheap flights from Washington, D.C. (WAS) 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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — ALO
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Waterloo

Cheapest flights from Washington, D.C. to Waterloo
Explore the most affordable flight options available from Washington, D.C. to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 5, 2026.

This American Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 2/148:10 pm
BWI
-
ALO
1 stop4h 43m
American Airlines
Mon 2/163:15 pm
ALO
-
BWI
1 stop5h 38m
American Airlines
Deal found 2/2$374
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 2/145:17 pm
BWI
-
ALO
1 stop7h 36m
American Airlines
Sun 2/153:15 pm
ALO
-
BWI
1 stop5h 46m
American Airlines
Deal found 2/2$409
This American Airlines deal was found by Cheapflights users on 2/4. 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 2/138:10 pm
BWI
-
ALO
1 stop4h 43m
American Airlines
Tue 2/175:20 am
ALO
-
BWI
1 stop4h 58m
American Airlines
Deal found 2/4$466
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Thu 8/136:21 pm
BWI
-
ALO
1 stop6h 11m
American Airlines
Mon 8/176:00 am
ALO
-
BWI
1 stop4h 16m
American Airlines
Deal found 2/2$499
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Wed 8/126:21 pm
BWI
-
ALO
1 stop6h 11m
American Airlines
Mon 8/176:00 am
ALO
-
BWI
1 stop4h 16m
American Airlines
Deal found 2/2$556
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 2/145:33 pm
DCA
-
ALO
1 stop7h 20m
American Airlines
Sun 2/155:20 am
ALO
-
DCA
1 stop4h 50m
American Airlines
Deal found 2/2$601
This American Airlines deal was found by Cheapflights users on 2/4. 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.
Mon 3/307:59 pm
DCA
-
ALO
1 stop4h 54m
American Airlines
Fri 4/33:10 pm
ALO
-
DCA
1 stop16h 49m
American Airlines
Deal found 2/4$607
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 2/142:03 pm
IAD
-
ALO
2 stops10h 50m
American Airlines
Mon 2/165:20 am
ALO
-
IAD
2 stops7h 12m
American Airlines
Deal found 2/2$611
This American Airlines deal was found by Cheapflights users on 2/4. 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 2/135:00 am
IAD
-
ALO
2 stops10h 45m
American Airlines
Tue 2/175:20 am
ALO
-
IAD
2 stops8h 19m
American Airlines
Deal found 2/4$836

Find flight deals from Washington, D.C. to Waterloo

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$374
(American Airlines)
Provider with most accurate pricing for Washington, D.C. (WAS)-Waterloo flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Waterloo flights.
Search Deals
From Washington, D.C. (WAS) to Waterloo
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 5, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Waterloo that are best for you.

Fly from

Washington, D.C.

Fly to

Waterloo

Route

Depart

Return

Price

BaltimoreWaterloo

BWI - ALO

BWIALO

Baltimore/Washington

Mon 3/30

6:37 pm-11:53 pm

1 stop6h 16m

Waterloo

Fri 4/3

5:20 am-12:02 pm

1 stop5h 42m

$593

Washington, D.C.Waterloo

DCA - ALO

DCAALO

Washington, D.C. Reagan-National

Mon 3/30

7:59 pm-11:53 pm

1 stop4h 54m

Waterloo

Fri 4/3

3:10 pm-8:59 am

1 stop16h 49m

$607

BaltimoreWaterloo

BWI - ALO

BWIALO

Baltimore/Washington

Sat 2/14

8:10 pm-11:53 pm

1 stop4h 43m

$421

Washington, D.C.Waterloo

IAD - ALO

IADALO

Washington, D.C. Dulles Intl

Sat 2/14

2:03 pm-11:53 pm

2 stops10h 50m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

  • Most accurate provider: When it comes to deals on Washington, D.C.-Waterloo, Iowa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Waterloo, Iowa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Waterloo, Iowa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Waterloo, Iowa flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Waterloo, Iowa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Washington, D.C. to Waterloo

Have a flexible travel schedule? Discover the best time to fly to Waterloo from Washington, D.C. 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. to Waterloo

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Waterloo, Iowa (average of $74). Flying from Washington, D.C. to Waterloo, Iowa in January is currently the most expensive (average of $284). 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 Washington, D.C. 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.?

    For a flight from Washington, D.C. to Waterloo, you will be flying into Waterloo. Waterloo (ALO) is just 5.3 mi from the center of the city. Waterloo is the only Waterloo airport and it handles 0 inbound flights from Washington, D.C. per day. 1 airline has flights to Waterloo from Washington, D.C. on a regular basis.

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

    Departing from Washington, D.C. to Waterloo, Iowa will take you 6h 16m. The distance between Washington, D.C. and Waterloo, Iowa is about 853 mi.

  • What are the most popular routes from Washington, D.C. to Waterloo, Iowa?

    The most popular flight routes from Washington, D.C. to Waterloo, Iowa are Baltimore/Washington - Waterloo, Washington, D.C. Reagan-National - Waterloo and Washington, D.C. Dulles Intl - Waterloo.

  • Can I find deals for flights from Washington, D.C. to Waterloo that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Waterloo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Waterloo?

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

  • Can I find deals for business class flights from Washington, D.C. to Waterloo?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Waterloo, Iowa?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Waterloo, Iowa (average of $74). Flying from Washington, D.C. to Waterloo, Iowa in January is currently the most expensive (average of $284). 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.

See more FAQs

Traveling to a place near Waterloo?

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

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Top airline flying from Washington, D.C. to Waterloo

Discover the top airline that operate flights from Washington, D.C. to Waterloo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$328Average$463FlexibilityNo cancel feeOn-time71%

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