HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Waterloo

$348+ Cheap flights from Washington, D.C. (WAS) to Waterloo, IA (ALO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — ALO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Waterloo with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 June 12, 2025.

Round-trip from

$448
(American Airlines)

One-way from

$348
(American Airlines)
From Washington, D.C. (WAS) to Waterloo
Search Deals
One-way flight from Washington, D.C. (WAS) to Waterloo
Search Deals

Find 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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 7/95:48 pmBWI - ALO
1 stop6h 41mAmerican Airlines
Sat 7/126:02 amALO - BWI
1 stop3h 55mAmerican Airlines
Deal found 6/10$448
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 7/95:00 pmDCA - ALO
1 stop7h 29mAmerican Airlines
Sat 7/123:06 pmALO - DCA
1 stop4h 38mAmerican Airlines
Deal found 6/10$456
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 7/95:39 pmIAD - ALO
2 stops6h 50mAmerican Airlines
Sat 7/123:06 pmALO - IAD
2 stops7h 52mAmerican Airlines
Deal found 6/10$466

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 June 12, 2025.
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

Wed 7/9

5:48 pm-11:29 pm

1 stop6h 41m

Waterloo

Sat 7/12

6:02 am-10:57 am

1 stop3h 55m

$448

Washington, D.C.Waterloo

DCA - ALO

DCAALO

Washington, D.C. Reagan-National

Wed 7/9

5:00 pm-11:29 pm

1 stop7h 29m

Waterloo

Sat 7/12

3:06 pm-8:44 pm

1 stop4h 38m

$456

Washington, D.C.Waterloo

IAD - ALO

IADALO

Washington, D.C. Dulles Intl

Wed 7/9

5:39 pm-11:29 pm

2 stops6h 50m

Waterloo

Sat 7/12

3:06 pm-11:58 pm

2 stops7h 52m

$466

Washington, D.C.Waterloo

DCA - ALO

DCAALO

Washington, D.C. Reagan-National

Tue 7/15

11:30 am-11:29 pm

2 stops12h 59m

$348

BaltimoreWaterloo

BWI - ALO

BWIALO

Baltimore/Washington

Tue 7/15

5:48 pm-11:29 pm

1 stop6h 41m

$391

Washington, D.C.Waterloo

IAD - ALO

IADALO

Washington, D.C. Dulles Intl

Tue 7/15

6:35 am-2:50 pm

2 stops9h 15m

$434

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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

Rainfall in Waterloo by month

Plan your trip to Waterloo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Waterloo, Iowa ranges from 0.8 - 5.0 inches per month. June is typically the wettest month, when rainfall can reach 5.0 in. January is typically the driest time to visit Waterloo, Iowa when rainfall is around 0.8 in.

Temperature in Waterloo by month

Plan your trip to Waterloo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Waterloo, Iowa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 19.4 F).

Reviews of airlines servicing Waterloo

Get insights into the airlines that provide service to Waterloo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Waterloo. Reviews last updated June 12, 2025.
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Food

6.5

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Food

6.5

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break

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. 0 airlines have flights to Waterloo from Washington, D.C. on a regular basis.

  • 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 Washington, D.C. Dulles Intl - Waterloo, Baltimore/Washington - Waterloo and Washington, D.C. Reagan-National - 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.

See more FAQs

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Cedar Falls

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.