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.

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).

What is the cheapest time of day to fly from DCA to ALO?

When flying from Washington, D.C. Reagan-National Airport to Waterloo, Iowa, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Waterloo from Washington, D.C. Reagan-National?

Most people fly into Waterloo (ALO) if they book a flight to Waterloo from Washington, D.C. Reagan-National. On average, Waterloo has 0 inbound flights from Washington, D.C. Reagan-National per day from 0 airlines. Waterloo is conveniently located just 5.3 mi from Waterloo’s city center.

Can I find deals for flights from Reagan-National to Waterloo that include hotel bookings?

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

How can I find direct flights from Reagan-National to Waterloo?

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

Can I find deals for business class flights from Reagan-National to Waterloo?

Yes. Cheapflights offers flight deals from Reagan-National 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.

$473+ Flights from Washington, D.C. Reagan-National Airport to Waterloo, IA

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Cheap flight deals from Reagan-National to Waterloo

Round-trip from	$473 (American Airlines)

From Washington, D.C. Reagan-National to Waterloo

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Cheapest flights from Reagan-National to Waterloo
Explore the most affordable flight options available from Reagan-National to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

sáb. 10/410:05 amDCA - ALO

2 stops13h 00mAmerican Airlines

mar. 10/73:21 pmALO - DCA

2 stops15h 17mAmerican Airlines

Deal found 7/1

$473

Best flights from Reagan-National to Waterloo
Discover carefully curated flight deals from Reagan-National to Waterloo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 3, 2025.

sáb. 10/410:05 amDCA - ALO

2 stops13h 00mAmerican Airlines

mar. 10/73:21 pmALO - DCA

2 stops15h 17mAmerican Airlines

Deal found 7/1

$473

Last-minute flights from Reagan-National to Waterloo
Discover last-minute flight deals from Reagan-National to Waterloo. Data last updated julio 3, 2025 and is based on user searches.

jue. 7/109:00 amDCA - ALO

1 stop6h 36mAmerican Airlines

lun. 7/146:00 amALO - DCA

1 stop3h 55mAmerican Airlines

Deal found 7/2

$549

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Waterloo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Waterloo

DCA - ALO

DCAALO

Washington, D.C. Reagan-National

sáb. 10/4

10:05 am-10:05 pm

2 stops13h 00m

Waterloo

mar. 10/7

3:21 pm-7:38 am

2 stops15h 17m

$473

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Best time to book a flight from Reagan-National to Waterloo

Have a flexible travel schedule? Discover the best time to fly to Waterloo from Reagan-National 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.

Reviews of airlines servicing Waterloo

Read reviews from past customers who have flown American Airlines from Washington, D.C. Reagan-National Airport to Waterloo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

American Airlines

7.2

Good

10,000 reviews

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

Reviews

1 / 20

2.0

Mediocre

Andrew,May 2025

LAX - MIA

Related info for your journey

What airport do you fly into for flights to Waterloo from Washington, D.C. Reagan-National?
Most people fly into Waterloo (ALO) if they book a flight to Waterloo from Washington, D.C. Reagan-National. On average, Waterloo has 0 inbound flights from Washington, D.C. Reagan-National per day from 0 airlines. Waterloo is conveniently located just 5.3 mi from Waterloo’s city center.
Can I find deals for flights from Reagan-National to Waterloo that include hotel bookings?
Yes. In addition to deals on Reagan-National to Waterloo flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Reagan-National to Waterloo?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Waterloo.
Can I find deals for business class flights from Reagan-National to Waterloo?
Yes. Cheapflights offers flight deals from Reagan-National 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.

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$473+ Cheap flights from Reagan-National (DCA) 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Reagan-National to Waterloo with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Reagan-National to Waterloo

Round-trip from

Find flight deals from Reagan-National to Waterloo

Cheapest flights from Reagan-National to WaterlooExplore the most affordable flight options available from Reagan-National to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

Explore the most affordable flight options available from Reagan-National to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Waterloo that are best for you.

Best time to book a flight from Reagan-National to Waterloo

Have a flexible travel schedule? Discover the best time to fly to Waterloo from Reagan-National with our price prediction graph.

Reviews of airlines servicing Waterloo

Read reviews from past customers who have flown American Airlines from Washington, D.C. Reagan-National Airport to Waterloo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National?

Can I find deals for flights from Reagan-National to Waterloo that include hotel bookings?

How can I find direct flights from Reagan-National to Waterloo?

Can I find deals for business class flights from Reagan-National to Waterloo?

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Cheapest flights from Reagan-National to Waterloo
Explore the most affordable flight options available from Reagan-National to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.