$471+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
ALO — SEA
Oct 21 — Oct 281
Round-trip
1 adult, Economy
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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
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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 Waterloo to Seattle
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Best
Last-minute
Cheapest flights from Waterloo to SeattleExplore 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 September 21, 2026.
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 September 21, 2026.
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/73:39 pm -
1 stop10h 57m
Sun 10/115:39 pm -
1 stop19h 30m
Deal found 9/17![American Airlines logo]()
$471
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Sun 11/16:04 am -
1 stop10h 16m
Sun 11/86:14 am -
1 stop6h 59m
Deal found 9/16![American Airlines logo]()
$572
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/35:00 am -
1 stop18h 36m
Wed 10/75:39 pm -
1 stop19h 30m
Deal found 9/17![American Airlines logo]()
$576
This American Airlines deal was found by Cheapflights users on 9/16. 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 12/227:04 am -
1 stop8h 02m
Tue 1/122:37 pm -
1 stop7h 54m
Deal found 9/16![American Airlines logo]()
$648
Best flights from Waterloo to SeattleDiscover carefully curated flight deals from Waterloo to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
Discover carefully curated flight deals from Waterloo to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/73:39 pm -
1 stop10h 57m
Sun 10/115:39 pm -
1 stop19h 30m
Deal found 9/17![American Airlines logo]()
$471
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Sun 11/16:04 am -
1 stop10h 16m
Sun 11/86:14 am -
1 stop6h 59m
Deal found 9/16![American Airlines logo]()
$572
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/35:00 am -
1 stop18h 36m
Wed 10/75:39 pm -
1 stop19h 30m
Deal found 9/17![American Airlines logo]()
$576
This American Airlines deal was found by Cheapflights users on 9/16. 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 12/227:04 am -
1 stop8h 02m
Tue 1/122:37 pm -
1 stop7h 54m
Deal found 9/16![American Airlines logo]()
$648
Last-minute flights from Waterloo to SeattleDiscover last-minute flight deals from Waterloo to Seattle. Data last updated September 21, 2026 and is based on user searches.
Discover last-minute flight deals from Waterloo to Seattle. Data last updated September 21, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/35:00 am -
1 stop18h 36m
Wed 10/75:39 pm -
1 stop19h 30m
Deal found 9/17![American Airlines logo]()
$576
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/73:39 pm -
1 stop10h 57m
Sun 10/115:39 pm -
1 stop19h 30m
Deal found 9/17![American Airlines logo]()
$471
Find 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 September 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $471 (American Airlines) |
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 7,457,451 searches. Data last updated September 21, 2026.
Use the filters below to find and compare flights from Waterloo to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
WaterlooSeattle
ALO Waterloo - SEA Seattle/Tacoma Intl
ALOSEA
Waterloo
Wed 10/7
3:39 pm-12:36 am
1 stop10h 57m
Seattle/Tacoma Intl
Sun 10/11
5:39 pm-3:09 pm
1 stop19h 30m
$471
WaterlooSeattle
ALO Waterloo - SEA Seattle/Tacoma Intl
ALOSEA
Waterloo
Sun 11/1
6:04 am-2:20 pm
1 stop10h 16m
Seattle/Tacoma Intl
Sun 11/8
6:14 am-3:13 pm
1 stop6h 59m
$572
WaterlooSeattle
ALO Waterloo - SEA Seattle/Tacoma Intl
ALOSEA
Waterloo
Sat 10/3
5:00 am-9:36 pm
1 stop18h 36m
Seattle/Tacoma Intl
Wed 10/7
5:39 pm-3:09 pm
1 stop19h 30m
$576
Quickest round-trip
WaterlooSeattle
ALO Waterloo - SEA Seattle/Tacoma Intl
ALOSEA
Waterloo
Tue 12/22
7:04 am-1:06 pm
1 stop8h 02m
Seattle/Tacoma Intl
Tue 1/12
2:37 pm-12:31 am
1 stop7h 54m
$648
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Waterloo, Iowa-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Waterloo, Iowa-Seattle flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
ALO-SEA
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 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 September 21, 2026.
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.
Boarding
7.4
Entertainment
6.8
Food
6.4
Crew
7.9
Overall
7.0
Comfort
7.2
Reviews
1 / 20
10.0
ExcellentLinda,Jul 2026
ROA - CLT
Boarding
7.4
Entertainment
6.8
Food
6.4
Crew
7.9
Overall
7.0
Comfort
7.2
Reviews
1 / 20
10.0
ExcellentLinda,Jul 2026
ROA - CLT
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.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
Poulsbo
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Waterloo and Seattle flights
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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 7,457,451 searches. Data last updated September 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$350 | Average$598 | FlexibilityNo cancel fee | On-time71% |