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$309+ Cheap flights from Waterloo, IA (ALO) to Maryland

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
ALO — BWI
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
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Cheap flight deals from Waterloo to Maryland

Cheapest flights from Waterloo to Maryland
Explore the most affordable flight options available from Waterloo to Maryland. 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 2/10. 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 3/253:10 pm
ALO
-
BWI
1 stop5h 50m
American Airlines
Wed 4/88:09 pm
BWI
-
ALO
1 stop4h 40m
American Airlines
Deal found 2/10$309
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 3/45:20 am
ALO
-
PHL
1 stop5h 03m
American Airlines
Wed 3/118:35 am
PHL
-
ALO
1 stop7h 05m
American Airlines
Deal found 2/11$309
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 2/255:20 am
ALO
-
PHL
1 stop5h 03m
American Airlines
Sun 3/18:35 am
PHL
-
ALO
1 stop7h 10m
American Airlines
Deal found 2/10$339
This American Airlines deal was found by Cheapflights users on 2/12. 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 4/105:40 am
ALO
-
PHL
1 stop4h 59m
American Airlines
Sun 4/129:02 am
PHL
-
ALO
1 stop5h 48m
American Airlines
Deal found 2/12$380
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 3/253:10 pm
ALO
-
DCA
1 stop6h 50m
American Airlines
Wed 4/86:58 am
DCA
-
ALO
1 stop7h 52m
American Airlines
Deal found 2/10$469
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 3/255:20 am
ALO
-
IAD
2 stops7h 12m
American Airlines
Wed 4/86:25 am
IAD
-
ALO
2 stops8h 25m
American Airlines
Deal found 2/10$479
This American Airlines deal was found by Cheapflights users on 2/12. 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 2/253:15 pm
ALO
-
BWI
1 stop5h 38m
American Airlines
Sun 3/18:10 pm
BWI
-
ALO
1 stop4h 43m
American Airlines
Deal found 2/12$528
This American Airlines deal was found by Cheapflights users on 2/12. 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 2/255:20 am
ALO
-
DCA
1 stop6h 24m
American Airlines
Sun 3/15:52 pm
DCA
-
ALO
1 stop7h 01m
American Airlines
Deal found 2/12$601
This American Airlines deal was found by Cheapflights users on 2/12. 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 2/255:20 am
ALO
-
IAD
2 stops8h 19m
American Airlines
Sun 3/12:03 pm
IAD
-
ALO
2 stops10h 50m
American Airlines
Deal found 2/12$680
This American Airlines deal was found by Cheapflights users on 2/12. 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.
Tue 3/175:20 am
ALO
-
BWI
1 stop17h 13m
American Airlines
Sat 3/215:02 pm
BWI
-
ALO
2 stops22h 38m
American Airlines
Deal found 2/12$999

Find flight deals from Waterloo to Maryland

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(American Airlines)
Provider with most accurate pricing for Waterloo-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Waterloo-Washington, D.C. (WAS) flights.
Search Deals
From Waterloo to Maryland
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Waterloo to Maryland 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 Waterloo to Maryland that are best for you.

Fly from

Waterloo

Fly to

Maryland

Route

Depart

Return

Price

WaterlooBaltimore

ALO - BWI

ALOBWI

Waterloo

Wed 3/25

3:10 pm-10:00 pm

1 stop5h 50m

Baltimore/Washington

Wed 4/8

8:09 pm-11:49 pm

1 stop4h 40m

$309

WaterlooPhiladelphia

ALO - PHL

ALOPHL

Waterloo

Wed 3/4

5:20 am-3:29 pm

2 stops9h 09m

Philadelphia

Wed 3/11

10:41 am-2:40 pm

1 stop4h 59m

$314

WaterlooPhiladelphia

ALO - PHL

ALOPHL

Waterloo

Wed 2/25

5:20 am-11:23 am

1 stop5h 03m

Philadelphia

Sun 3/1

8:35 am-2:45 pm

1 stop7h 10m

$339

WaterlooPhiladelphia

ALO - PHL

ALOPHL

Waterloo

Fri 4/10

5:40 am-11:39 am

1 stop4h 59m

Philadelphia

Sun 4/12

9:02 am-1:50 pm

1 stop5h 48m

$380

WaterlooWashington, D.C.

ALO - DCA

ALODCA

Waterloo

Wed 3/25

3:10 pm-11:00 pm

1 stop6h 50m

Washington, D.C. Reagan-National

Wed 4/8

6:58 am-1:50 pm

1 stop7h 52m

$469

WaterlooWashington, D.C.

ALO - IAD

ALOIAD

Waterloo

Wed 3/25

5:20 am-1:32 pm

2 stops7h 12m

Washington, D.C. Dulles Intl

Wed 4/8

6:25 am-1:50 pm

2 stops8h 25m

$479

WaterlooBaltimore

ALO - BWI

ALOBWI

Waterloo

Wed 2/25

3:15 pm-9:53 pm

1 stop5h 38m

Baltimore/Washington

Sun 3/1

8:10 pm-11:53 pm

1 stop4h 43m

$528

WaterlooWashington, D.C.

ALO - DCA

ALODCA

Waterloo

Wed 2/25

5:20 am-12:44 pm

1 stop6h 24m

Washington, D.C. Reagan-National

Sun 3/1

5:52 pm-11:53 pm

1 stop7h 01m

$601

WaterlooWashington, D.C.

ALO - IAD

ALOIAD

Waterloo

Wed 2/25

5:20 am-2:39 pm

2 stops8h 19m

Washington, D.C. Dulles Intl

Sun 3/1

2:03 pm-11:53 pm

2 stops10h 50m

$680

WaterlooBaltimore

ALO - BWI

ALOBWI

Waterloo

Tue 3/17

5:20 am-11:33 pm

1 stop17h 13m

Baltimore/Washington

Sat 3/21

5:02 pm-2:40 pm

2 stops22h 38m

$999

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 11 results
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Best time to book a flight from Waterloo to Maryland

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

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

Currently, July is the cheapest month in which you can book a flight from Waterloo, Iowa to Maryland (average of $190). Flying from Waterloo, Iowa to Maryland in March is currently the most expensive (average of $295). 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 Waterloo to Maryland. 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 from for flights from Waterloo to Maryland?

    If you book a flight to Maryland from Waterloo, you will be flying from Waterloo, which is the city’s only airport. Waterloo (ALO) is located 5.3 mi from the center of Waterloo.

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

    For as low as $309, American Airlines can have you in Maryland from Waterloo, Iowa in 5h 50m. Airlines will cover a distance of 853 mi.

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

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

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Waterloo, Iowa to Maryland (average of $190). Flying from Waterloo, Iowa to Maryland in March is currently the most expensive (average of $295). 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

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