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 WA to ALO?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Waterloo, Iowa as you normally would.

What airport do you fly into for flights to Waterloo from Washington?

Most people fly into Waterloo (ALO) if they book a flight to Waterloo from Washington. Waterloo is conveniently located just 5.3 mi from Waterloo’s city center.

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

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

How can I find direct flights from Washington to Waterloo?

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

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

Yes. Cheapflights offers flight deals from Washington 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.

$379+ Flights from Washington to Waterloo, IA

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Cheap flight deals from Washington to Waterloo

Round-trip from	$379 (American Airlines)
One-way from	$283 (American Airlines)

From Washington to Waterloo

Search Deals

One-way flight from Washington to Waterloo

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Find flight deals from Washington to Waterloo

Cheapest flights from Washington to Waterloo
Explore the most affordable flight options available from Washington to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Sat 9/271:12 pmPDX - ALO

1 stop6h 53mAmerican Airlines

Wed 10/14:59 pmALO - PDX

1 stop8h 55mAmerican Airlines

Deal found 7/30

$379

Wed 8/610:35 amSEA - ALO

1 stop9h 31mAmerican Airlines

Wed 8/206:00 amALO - SEA

2 stops12h 42mAmerican Airlines

Deal found 7/30

$439

Best flights from Washington to Waterloo
Discover carefully curated flight deals from Washington to Waterloo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Sat 9/276:07 amPDX - ALO

1 stop8h 22mAmerican Airlines

Wed 10/14:59 pmALO - PDX

1 stop8h 55mAmerican Airlines

Deal found 7/29

$379

Wed 8/610:35 amSEA - ALO

1 stop9h 31mAmerican Airlines

Wed 8/206:00 amALO - SEA

2 stops12h 42mAmerican Airlines

Deal found 7/30

$439

Last-minute flights from Washington to Waterloo
Discover last-minute flight deals from Washington to Waterloo. Data last updated July 31, 2025 and is based on user searches.

Wed 8/610:35 amSEA - ALO

1 stop9h 31mAmerican Airlines

Wed 8/206:00 amALO - SEA

2 stops12h 42mAmerican Airlines

Deal found 7/30

$439

One-way flights from Washington to Waterloo
Search for one-way flight options from Washington to Waterloo. Find affordable one-way fares based on user searches. Data last updated July 31, 2025.

Sun 8/36:18 amSEA - ALO

1 stop6h 18mAmerican Airlines

Deal found 7/31

$454

Fly from

Fly to

Route

Depart

Return

Price

PortlandWaterloo

PDX - ALO

PDXALO

Portland

Sat 9/27

6:07 am-4:29 pm

1 stop8h 22m

Waterloo

Wed 10/1

4:59 pm-11:54 pm

1 stop8h 55m

$379

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Wed 8/6

10:35 am-10:06 pm

1 stop9h 31m

Waterloo

Wed 8/20

6:00 am-4:42 pm

2 stops12h 42m

$439

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Sun 8/3

6:18 am-2:36 pm

1 stop6h 18m

$454

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Best time to book a flight from Washington to Waterloo

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

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Waterloo

Read through reviews of airlines operating flights from Washington to Waterloo, such as American Airlines. You can also see how each airline stacks up 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?
Most people fly into Waterloo (ALO) if they book a flight to Waterloo from Washington. Waterloo is conveniently located just 5.3 mi from Waterloo’s city center.
Can I find deals for flights from Washington to Waterloo that include hotel bookings?
Yes. In addition to deals on Washington to Waterloo flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington to Waterloo?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Waterloo.
Can I find deals for business class flights from Washington to Waterloo?
Yes. Cheapflights offers flight deals from Washington 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

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Top airline flying from Washington to Waterloo

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$399	Average$538	FlexibilityNo cancel fee	On-time71%

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$379+ Cheap flights from Washington 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington 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 Washington to Waterloo

Keep the following information in mind while searching for Washington to Waterloo flight deals. Data was last updated July 31, 2025.

Round-trip from

One-way from

Find flight deals from Washington to Waterloo

Cheapest flights from Washington to WaterlooExplore the most affordable flight options available from Washington to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Explore the most affordable flight options available from Washington to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington to Waterloo that are best for you.

Best time to book a flight from Washington to Waterloo

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

Cheapflights Insights

Everything you need to know about your flight from Washington to Waterloo

Reviews of airlines servicing Waterloo

Read through reviews of airlines operating flights from Washington to Waterloo, such as American Airlines. You can also see how each airline stacks up 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 Washington 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?

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

How can I find direct flights from Washington to Waterloo?

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

Traveling to a place near Waterloo?

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.

Alternative routes for Washington to Waterloo

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Washington to Waterloo

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Book with Flexibility

Travel Smart

Cheapest flights from Washington to Waterloo
Explore the most affordable flight options available from Washington to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.