What is the cheapest airline to fly from Seattle to Waterloo, Iowa round-trip?

Cheapflights users have booked flights from Seattle to Waterloo, Iowa round-trip from $398.

What is the cheapest day to fly from Seattle to Waterloo, Iowa?

Travelers seeking maximum savings on their Seattle to Waterloo, Iowa flight should consider departing on Friday evenings when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 day to fly round-trip from Seattle to Waterloo, Iowa?

Users have found that flying from Seattle to Waterloo, Iowa on a Thursday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

Unlike in the morning, when flights are generally more expensive, you can save up to 22% on flights from Seattle to Waterloo, Iowa by exploring options for tickets at noon.

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

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

How can I find direct flights from Seattle to Waterloo?

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

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

Yes. Cheapflights offers flight deals from Seattle 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.

$398+ Flights from Seattle to Waterloo, IA

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Seattle to Waterloo with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Waterloo

Round-trip from	$398 (American Airlines)

From Seattle/Tacoma Intl to Waterloo

Search Deals

Find flight deals from Seattle to Waterloo

Cheapest flights from Seattle to Waterloo
Explore the most affordable flight options available from Seattle to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 8, 2025.

Tue 7/221:18 pmSEA - ALO

1 stop8h 11mAmerican Airlines

Sat 7/263:06 pmALO - SEA

1 stop7h 24mAmerican Airlines

Deal found 7/7

$398

Best flights from Seattle to Waterloo
Discover carefully curated flight deals from Seattle to Waterloo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 8, 2025.

Tue 7/221:18 pmSEA - ALO

1 stop8h 11mAmerican Airlines

Sat 7/263:06 pmALO - SEA

1 stop7h 24mAmerican Airlines

Deal found 7/7

$398

Last-minute flights from Seattle to Waterloo
Discover last-minute flight deals from Seattle to Waterloo. Data last updated July 8, 2025 and is based on user searches.

Tue 7/221:18 pmSEA - ALO

1 stop8h 11mAmerican Airlines

Sat 7/263:06 pmALO - SEA

1 stop7h 24mAmerican Airlines

Deal found 7/7

$398

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Tue 7/22

1:18 pm-11:29 pm

1 stop8h 11m

Waterloo

Sat 7/26

3:06 pm-8:30 pm

1 stop7h 24m

$398

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/7

Best time to book a flight from Seattle to Waterloo

Have a flexible travel schedule? Discover the best time to fly to Waterloo from Seattle 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 Seattle 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 is the cheapest airline to fly from Seattle to Waterloo, Iowa round-trip?
Cheapflights users have booked flights from Seattle to Waterloo, Iowa round-trip from $398.
Can I find deals for flights from Seattle to Waterloo that include hotel bookings?
Yes. In addition to deals on Seattle to Waterloo flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Waterloo?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Waterloo.
Can I find deals for business class flights from Seattle to Waterloo?
Yes. Cheapflights offers flight deals from Seattle 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

Cedar Falls

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to Waterloo

Seattle to Omaha flights

Seattle to Des Moines flights

Seattle to Cedar Rapids flights

Portland to Omaha flights

Portland to Cedar Rapids flights

Seattle to Moline flights

Portland to Des Moines flights

Spokane to Moline flights

Spokane to Omaha flights

Bellingham to Omaha flights

Portland to Moline flights

Bellingham to Des Moines flights

Seattle to Sioux City flights

Spokane to Cedar Rapids flights

Pasco to Des Moines flights

Seattle to Dubuque flights

Spokane to Sioux City flights

Portland to Sioux City flights

Yakima to Sioux City flights

Seattle to La Crosse flights

Pasco to Sioux City flights

Pasco to Omaha flights

Walla Walla to Sioux City flights

Pullman to Omaha flights

Spokane to Des Moines flights

Portland to La Crosse flights

Portland to Dubuque flights

Portland to Waterloo flights

Spokane to Dubuque flights

Bellingham to La Crosse flights

Walla Walla to Moline flights

Top airline flying from Seattle to Waterloo

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$421	Average$538	FlexibilityNo cancel fee	On-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$398+ Cheap flights from Seattle to Waterloo, IA (SEA - 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle 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 Seattle to Waterloo

Round-trip from

Find flight deals from Seattle to Waterloo

Cheapest flights from Seattle to WaterlooExplore the most affordable flight options available from Seattle to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 8, 2025.

Explore the most affordable flight options available from Seattle to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 8, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Seattle to Waterloo

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

Reviews of airlines servicing Waterloo

Read reviews from past customers who have flown American Airlines from Seattle 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 Seattle to Waterloo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What is the cheapest airline to fly from Seattle to Waterloo, Iowa round-trip?

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

How can I find direct flights from Seattle to Waterloo?

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

Traveling to a place near Seattle?

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 Seattle to Waterloo

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

Top airline flying from Seattle to Waterloo

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Seattle to Waterloo
Explore the most affordable flight options available from Seattle to Waterloo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 8, 2025.