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Waterloo

$319+ 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ALO
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
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Find 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 November 4, 2025.

This American Airlines deal was found by Cheapflights users on 11/2. 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.
Mon 11/2410:57 amPHL - ALO
1 stop4h 50mAmerican Airlines
Fri 11/287:15 amALO - PHL
1 stop6h 01mAmerican Airlines
Deal found 11/2$319
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Mon 11/2410:57 amPHL - ALO
1 stop4h 50mAmerican Airlines
Tue 12/23:20 pmALO - PHL
2 stops7h 36mAmerican Airlines
Deal found 11/2$324
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 11/2510:57 amPHL - ALO
1 stop4h 53mAmerican Airlines
Fri 11/287:15 amALO - PHL
1 stop6h 01mAmerican Airlines
Deal found 11/2$354
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Mon 12/17:37 pmBWI - ALO
1 stop5h 11mAmerican Airlines
Mon 12/83:27 pmALO - BWI
1 stop7h 25mAmerican Airlines
Deal found 11/2$363
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 11/256:00 amPHL - ALO
2 stops9h 50mAmerican Airlines
Tue 12/23:20 pmALO - PHL
2 stops7h 36mAmerican Airlines
Deal found 11/2$365
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 11/2510:57 amPHL - ALO
1 stop4h 53mAmerican Airlines
Mon 12/13:17 pmALO - PHL
1 stop7h 30mAmerican Airlines
Deal found 11/2$390
This American Airlines deal was found by Cheapflights users on 11/3. 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 11/1811:09 amBWI - ALO
2 stops9h 48mAmerican Airlines
Sat 11/226:00 amALO - BWI
2 stops9h 56mAmerican Airlines
Deal found 11/3$401
This American Airlines deal was found by Cheapflights users on 11/4. 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 11/76:50 pmPHL - ALO
1 stop5h 58mAmerican Airlines
Sun 11/96:00 amALO - PHL
1 stop6h 17mAmerican Airlines
Deal found 11/4$429
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Fri 11/288:46 amPHL - ALO
1 stop7h 01mAmerican Airlines
Tue 12/26:00 amALO - PHL
1 stop4h 28mAmerican Airlines
Deal found 11/2$433
This American Airlines deal was found by Cheapflights users on 11/3. 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 12/235:41 pmDCA - ALO
1 stop7h 04mAmerican Airlines
Sat 12/275:40 amALO - DCA
1 stop4h 16mAmerican Airlines
Deal found 11/3$484
This American Airlines deal was found by Cheapflights users on 11/3. 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 12/66:10 amDCA - ALO
2 stops18h 41mAmerican Airlines
Tue 12/96:00 amALO - DCA
2 stops27h 02mAmerican Airlines
Deal found 11/3$486
This American Airlines deal was found by Cheapflights users on 11/3. 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 11/183:25 pmDCA - ALO
1 stop5h 32mAmerican Airlines
Sat 11/226:00 amALO - DCA
2 stops7h 24mAmerican Airlines
Deal found 11/3$508

Cheap flight deals from Maryland to Waterloo

Keep the following information in mind while searching for Maryland to Waterloo flight deals. Data was last updated November 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$249
(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 November 4, 2025.
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

PhiladelphiaWaterloo

PHL - ALO

PHLALO

Philadelphia

Thu 11/27

10:57 am-2:47 pm

1 stop4h 50m

Waterloo

Fri 11/28

7:15 am-2:16 pm

1 stop6h 01m

$319

PhiladelphiaWaterloo

PHL - ALO

PHLALO

Philadelphia

Thu 11/27

8:51 am-2:47 pm

1 stop6h 56m

Waterloo

Tue 12/2

3:20 pm-11:56 pm

2 stops7h 36m

$324

PhiladelphiaWaterloo

PHL - ALO

PHLALO

Philadelphia

Wed 11/26

10:57 am-2:47 pm

1 stop4h 50m

Waterloo

Tue 12/2

6:00 am-1:17 pm

1 stop6h 17m

$354

PhiladelphiaWaterloo

PHL - ALO

PHLALO

Philadelphia

Thu 11/27

8:51 am-2:47 pm

1 stop6h 56m

Waterloo

Mon 12/1

3:17 pm-11:47 pm

1 stop7h 30m

$354

PhiladelphiaWaterloo

PHL - ALO

PHLALO

Philadelphia

Wed 11/26

10:57 am-2:47 pm

1 stop4h 50m

Waterloo

Fri 11/28

7:15 am-2:16 pm

1 stop6h 01m

$354

PhiladelphiaWaterloo

PHL - ALO

PHLALO

Philadelphia

Mon 11/24

10:57 am-2:47 pm

1 stop4h 50m

Waterloo

Mon 12/1

3:17 pm-12:10 am

2 stops7h 53m

$360

BaltimoreWaterloo

BWI - ALO

BWIALO

Baltimore/Washington

Mon 12/1

7:37 pm-11:48 pm

1 stop5h 11m

Waterloo

Mon 12/8

3:27 pm-11:52 pm

1 stop7h 25m

$363

PhiladelphiaWaterloo

PHL - ALO

PHLALO

Philadelphia

Tue 11/25

6:00 am-2:50 pm

2 stops9h 50m

Waterloo

Tue 12/2

3:20 pm-11:56 pm

2 stops7h 36m

$365

PhiladelphiaWaterloo

PHL - ALO

PHLALO

Philadelphia

Tue 11/25

6:00 am-2:50 pm

2 stops9h 50m

Waterloo

Mon 12/1

3:17 pm-11:47 pm

1 stop7h 30m

$395

PhiladelphiaWaterloo

PHL - ALO

PHLALO

Philadelphia

Fri 11/7

6:50 pm-11:48 pm

1 stop5h 58m

Waterloo

Sun 11/9

6:00 am-1:17 pm

1 stop6h 17m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 23 results
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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 $148). Flying from Maryland to Waterloo, Iowa in April is currently the most expensive (average of $273). 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 50m. Fly via American Airlines to get the fastest option. Maryland and Waterloo, Iowa are separated by a distance of 909 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 $148). Flying from Maryland to Waterloo, Iowa in April is currently the most expensive (average of $273). 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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Alternative routes for Maryland to Waterloo

See prices for flight routes from nearby airports that may be better suited for you.
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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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$328Average$398FlexibilityNo cancel feeOn-time71%

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