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$289+ Cheap flights from Waterloo, IA to Seattle (ALO - SEA)

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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
ALO — SEA
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap flight deals from Waterloo to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Waterloo (ALO) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$289
(American Airlines)
Provider with most accurate pricing for Waterloo-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Waterloo-Seattle/Tacoma Intl flights.
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From Waterloo to Seattle/Tacoma Intl
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Find flight deals from Waterloo to Seattle

Cheapest flights from Waterloo to Seattle
Explore the most affordable flight options available from Waterloo to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This American Airlines deal was found by Cheapflights users on 10/28. 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 11/186:00 amALO - SEA
1 stop8h 40mAmerican Airlines
Sun 11/232:46 pmSEA - ALO
1 stop7h 02mAmerican Airlines
Deal found 10/28$289
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/123:28 pmALO - SEA
1 stop9h 50mAmerican Airlines
Sun 11/162:46 pmSEA - ALO
1 stop7h 02mAmerican Airlines
Deal found 10/28$444

Cheapflights Fare Finder

 
Customize your flight search to find flights from Waterloo to Seattle 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 October 28, 2025.
Use the filters below to find and compare flights from Waterloo to Seattle that are best for you.

Fly from

Waterloo

Fly to

Seattle

Route

Depart

Return

Price

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Tue 11/18

6:00 am-12:40 pm

1 stop8h 40m

Seattle/Tacoma Intl

Sun 11/23

2:46 pm-11:48 pm

1 stop7h 02m

$289

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Wed 11/12

3:28 pm-11:18 pm

1 stop9h 50m

Seattle/Tacoma Intl

Sun 11/16

2:46 pm-11:48 pm

1 stop7h 02m

$444

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Sat 3/7

6:00 am-2:47 pm

2 stops10h 47m

Seattle/Tacoma Intl

Tue 3/10

1:48 pm-10:01 pm

1 stop6h 13m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Compare providers for flights from Waterloo to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Waterloo to Seattle in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Waterloo, Iowa-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Waterloo, Iowa-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Waterloo, Iowa-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Waterloo, Iowa-Seattle flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Waterloo, Iowa-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Waterloo to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle 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 Seattle

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

Currently, April is the cheapest month in which you can book a flight from Waterloo, Iowa to Seattle (average of $131). Flying from Waterloo, Iowa to Seattle in September is currently the most expensive (average of $288). 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.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated October 28, 2025.
Peruse reviews from past customers who have flown with American Airlines from Waterloo to Seattle to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,032 reviews

Boarding

7.5

Crew

8.0

Overall

7.2

Comfort

7.2

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
11,032 reviews
American Airlines
7.2
Good
11,032 reviews

Boarding

7.5

Crew

8.0

Overall

7.2

Comfort

7.2

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from Waterloo to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    A quick flight from Waterloo, Iowa to Seattle can take about 8h 40m. American Airlines provides one of the quickest options available for as low as $289. There are 1489 mi between Waterloo, Iowa and Seattle.

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

    Our cheapest airline available from Waterloo, Iowa to Seattle is American Airlines. Our recent data shows that you can find tickets from as low as $288 on this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Waterloo to Seattle 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 Seattle?

    Currently, April is the cheapest month in which you can book a flight from Waterloo, Iowa to Seattle (average of $131). Flying from Waterloo, Iowa to Seattle in September is currently the most expensive (average of $288). 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 Seattle?

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Top airline flying from Waterloo to Seattle

Discover the top airline that operate flights from Waterloo to Seattle. 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$288Average$466FlexibilityNo cancel feeOn-time71%

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