ALO - SEA

$289 Find Cheap Flights from Waterloo to Seattle

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Waterloo to Seattle departing on 11/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Waterloo to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Waterloo to Seattle, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Waterloo to Seattle (ALO-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Waterloo to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Waterloo to Seattle

Tue, Nov 18 - Sun, Nov 23
American Airlines Logo
6:00 am - 12:40 pmALO-SEA
8h 40m1 stop
American Airlines Logo
2:46 pm - 11:48 pmSEA-ALO
7h 02m1 stop
$289American Airlines
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Tue, Nov 18 - Sun, Nov 23
American Airlines Logo
6:00 am - 3:31 pmALO-SEA
11h 31m2 stops
American Airlines Logo
2:46 pm - 11:48 pmSEA-ALO
7h 02m1 stop
$294American Airlines
Find Deal
Tue, Nov 18 - Sat, Nov 22
American Airlines Logo
6:00 am - 3:31 pmALO-SEA
11h 31m2 stops
American Airlines Logo
12:59 am - 2:47 pmSEA-ALO
11h 48m2 stops
$299American Airlines
Find Deal
Wed, Nov 12 - Sun, Nov 16
American Airlines Logo
3:28 pm - 11:18 pmALO-SEA
9h 50m1 stop
American Airlines Logo
2:46 pm - 11:48 pmSEA-ALO
7h 02m1 stop
$444American Airlines
Find Deal
Wed, Nov 12 - Sat, Nov 15
American Airlines Logo
3:28 pm - 11:18 pmALO-SEA
9h 50m1 stop
American Airlines Logo
12:59 am - 2:58 pmSEA-ALO
11h 59m2 stops
$449American Airlines
Find Deal
Tue, Nov 18 - Sun, Nov 23
American Airlines Logo
6:00 am - 3:31 pmALO-SEA
11h 31m2 stops
American Airlines Logo
11:05 am - 11:48 pmSEA-ALO
10h 43m2 stops
$466American Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10
American Airlines Logo
6:00 am - 3:58 pmALO-SEA
11h 58m2 stops
American Airlines Logo
1:48 pm - 10:01 pmSEA-ALO
6h 13m1 stop
$480American Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10
American Airlines Logo
6:00 am - 3:58 pmALO-SEA
11h 58m2 stops
American Airlines Logo
11:59 pm - 2:20 pmSEA-ALO
12h 21m2 stops
$485American Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10
American Airlines Logo
6:00 am - 3:58 pmALO-SEA
11h 58m2 stops
American Airlines Logo
1:48 pm - 10:01 pmSEA-ALO
6h 13m1 stop
$490American Airlines
Find Deal
Sat, Mar 7 - Mon, Mar 9
American Airlines Logo
6:00 am - 3:58 pmALO-SEA
11h 58m2 stops
American Airlines Logo
1:33 am - 2:20 pmSEA-ALO
10h 47m2 stops
$495American Airlines
Find Deal

Everything you should know

Cheapest round-trip
$289
American Airlines
Tue 11/18Sun 11/23
ALO - SEA • 1 stop
Cheapest one-way
Multiple Airlines
Thu 10/30
ALO - SEA • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Booking Insights

KAYAK's insights & trends for Waterloo to Seattle flights

Get data-powered insights and trends into flights from Waterloo to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Waterloo to Seattle?

The average price of all round-trip flights from Waterloo to Seattle clicked on KAYAK for each day over the last 12 months.

For Waterloo to Seattle, Tuesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Seattle back to Waterloo, the best deals are generally found on Thursday, with Friday being the most expensive.

Find deals

Good to know

Cheapest flight$289
Flight from Waterloo to Seattle

When to book flights from Waterloo to Seattle

Are your dates flexible? Find out the best times to travel from Waterloo to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Waterloo to Seattle

  • What is the cheapest flight from Waterloo to Seattle?

    In the last 3 days, the lowest price for a flight from Waterloo to Seattle was $289 for a round-trip ticket.

  • Do I need a passport to fly between Waterloo and Seattle?

    No, a passport isn't needed to fly from Waterloo to Seattle. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Waterloo to Seattle?

    Waterloo and Seattle are both served by 1 main airport. You will leave Waterloo from Waterloo and will be arriving at Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from Waterloo to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Waterloo to Seattle?

    oneworld is the only airline alliance operating flights between Waterloo and Seattle.

  • How does KAYAK find such low prices on flights from Waterloo to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Waterloo to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Waterloo to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Waterloo is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Waterloo to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Waterloo with another airline. Booking your flights between Waterloo and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Waterloo to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Waterloo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Waterloo to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Waterloo to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Waterloo to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11030 reviews
7.5Boarding
6.4Food
8.0Crew
6.9Entertainment
7.2Comfort
Airline reviews

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

8.0 ExcellentKohMeng, Oct 2025DFW - LAX
Read more American Airlines reviews

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

We are too tired and frustrated to comment politely at this point

Terrible. Our luggage was delayed and couldn’t be delivered for several days. We got bad information from the airline agents at baggage claim. We had to pick up our car so we wouldn’t be charged for an extra day. We got lost in the maze of airport parking. The baggage claim agents didn’t offer us any compensation for our extra time and expense. We are tired, hungry and very frustrated.

The flight was flawless and we even arrived between 20 and 25 minutes early!

The only thing to like was that we eventually got to our destination

Everything you need to know for your flight from Waterloo to Seattle

Information on your arrival and departure airports

Waterloo (ALO)
Seattle (SEA)

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