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Waterloo

$339+ Cheap flights from Maryland 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ALO
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
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Cheap flight deals from Maryland to Waterloo

Cheapest flights from Maryland to Waterloo
Explore the most affordable flight options available from Maryland to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.

This American Airlines deal was found by Cheapflights users on 2/11. 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 2/268:10 pm
BWI
-
ALO
1 stop4h 43m
American Airlines
Mon 3/23:15 pm
ALO
-
BWI
1 stop7h 18m
American Airlines
Deal found 2/11$339
This American Airlines deal was found by Cheapflights users on 2/11. 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 2/1910:30 am
PHL
-
ALO
1 stop5h 15m
American Airlines
Sun 2/223:15 pm
ALO
-
PHL
1 stop5h 39m
American Airlines
Deal found 2/11$409
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.
Wed 2/188:10 pm
BWI
-
ALO
1 stop4h 43m
American Airlines
Tue 2/245:20 am
ALO
-
BWI
1 stop4h 58m
American Airlines
Deal found 2/10$464
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
This American Airlines deal was found by Cheapflights users on 2/11. 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 3/128:35 am
PHL
-
ALO
1 stop7h 05m
American Airlines
Thu 3/193:10 pm
ALO
-
PHL
1 stop5h 44m
American Airlines
Deal found 2/11$562
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.
Wed 2/188:10 pm
BWI
-
ALO
1 stop4h 43m
American Airlines
Sun 2/223:15 pm
ALO
-
BWI
1 stop7h 14m
American Airlines
Deal found 2/10$563
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.
Thu 2/196:46 am
BWI
-
ALO
2 stops8h 59m
American Airlines
Tue 2/245:20 am
ALO
-
BWI
2 stops9h 01m
American Airlines
Deal found 2/10$597
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 7/107:52 pm
BWI
-
ALO
1 stop5h 07m
American Airlines
Sun 7/125:00 am
ALO
-
BWI
2 stops7h 00m
American Airlines
Deal found 2/10$656
This American Airlines deal was found by Cheapflights users on 2/11. 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 6/177:37 pm
PHL
-
ALO
1 stop5h 22m
American Airlines
Wed 6/243:16 pm
ALO
-
PHL
1 stop5h 43m
American Airlines
Deal found 2/11$675
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 7/105:45 pm
IAD
-
ALO
2 stops7h 14m
American Airlines
Sun 7/123:09 pm
ALO
-
IAD
2 stops7h 49m
American Airlines
Deal found 2/10$775

Find flight deals from Maryland to Waterloo

Keep the following information in mind while searching for Maryland to Waterloo flight deals. Data was last updated February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$339
(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 Maryland to Waterloo
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Maryland 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 12, 2026.
Use the filters below to find and compare flights from Maryland to Waterloo that are best for you.

Fly from

Maryland

Fly to

Waterloo

Route

Depart

Return

Price

BaltimoreWaterloo

BWI - ALO

BWIALO

Baltimore/Washington

Thu 2/26

8:10 pm-11:53 pm

1 stop4h 43m

Waterloo

Mon 3/2

3:15 pm-11:33 pm

1 stop7h 18m

$339

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

PhiladelphiaWaterloo

PHL - ALO

PHLALO

Philadelphia

Thu 3/12

8:35 am-2:40 pm

1 stop7h 05m

Waterloo

Thu 3/19

3:10 pm-9:54 pm

1 stop5h 44m

$562

BaltimoreWaterloo

BWI - ALO

BWIALO

Baltimore/Washington

Fri 7/10

7:52 pm-11:59 pm

1 stop5h 07m

Waterloo

Sun 7/12

5:00 am-1:00 pm

2 stops7h 00m

$656

PhiladelphiaWaterloo

PHL - ALO

PHLALO

Philadelphia

Wed 6/17

10:30 am-2:46 pm

1 stop5h 16m

Waterloo

Wed 6/24

3:16 pm-9:59 pm

1 stop5h 43m

$675

Washington, D.C.Waterloo

IAD - ALO

IADALO

Washington, D.C. Dulles Intl

Fri 7/10

5:45 pm-11:59 pm

2 stops7h 14m

Waterloo

Sun 7/12

3:09 pm-11:58 pm

2 stops7h 49m

$775

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Best time to book a flight from Maryland to Waterloo

Have a flexible travel schedule? Discover the best time to fly to Waterloo from Maryland 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 Maryland to Waterloo

What is the cheapest month to book a flight from Maryland to Waterloo, Iowa?

Currently, July is the cheapest month in which you can book a flight from Maryland to Waterloo, Iowa (average of $145). Flying from Maryland to Waterloo, Iowa in February is currently the most expensive (average of $318). 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 Maryland 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 Maryland?

    For a flight from Maryland to Waterloo, you will be flying into Waterloo. Waterloo (ALO) is just 5.3 mi from the center of the city.

  • How long is the flight from Maryland to Waterloo, Iowa?

    There are many flights that can get you from Maryland to Waterloo, Iowa in 4h 43m. Fly via American Airlines to get the fastest option. Maryland and Waterloo, Iowa are separated by a distance of 853 mi.

  • What are the most popular routes from Maryland to Waterloo, Iowa?

    While some choose either Philadelphia - Waterloo or Washington, D.C. Reagan-National - Waterloo, Baltimore/Washington - Waterloo is the most popular route from Maryland to Waterloo, Iowa.

  • Can I find deals for flights from Maryland to Waterloo that include hotel bookings?

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

  • How can I find direct flights from Maryland to Waterloo?

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

  • Can I find deals for business class flights from Maryland to Waterloo?

    Yes. Cheapflights offers flight deals from Maryland 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 Maryland to Waterloo, Iowa?

    Currently, July is the cheapest month in which you can book a flight from Maryland to Waterloo, Iowa (average of $145). Flying from Maryland to Waterloo, Iowa in February is currently the most expensive (average of $318). 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 Maryland to Waterloo

Discover the top airline that operate flights from Maryland 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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$328Average$463FlexibilityNo cancel feeOn-time71%

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