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 11/7. 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

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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Flights 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

Fri, Nov 7 - Mon, Nov 10
American Airlines Logo
3:28 pm - 11:18 pmALO-SEA
9h 50m1 stop
American Airlines Logo
2:46 pm - 11:57 pmSEA-ALO
7h 11m1 stop
$289American Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
American Airlines Logo
3:28 pm - 11:18 pmALO-SEA
9h 50m1 stop
American Airlines Logo
9:00 am - 7:57 pmSEA-ALO
8h 57m1 stop
$369American Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
American Airlines Logo
3:28 pm - 11:18 pmALO-SEA
9h 50m1 stop
American Airlines Logo
5:24 am - 7:57 pmSEA-ALO
12h 33m2 stops
$374American Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
American Airlines Logo
6:00 am - 2:48 pmALO-SEA
10h 48m2 stops
American Airlines Logo
5:24 am - 7:57 pmSEA-ALO
12h 33m2 stops
$379American Airlines
Find Deal
Fri, Nov 7 - Mon, Nov 10
American Airlines Logo
3:28 pm - 11:18 pmALO-SEA
9h 50m1 stop
American Airlines Logo
10:35 am - 11:57 pmSEA-ALO
11h 22m2 stops
$394American Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
American Airlines Logo
6:00 am - 2:48 pmALO-SEA
10h 48m2 stops
American Airlines Logo
5:24 am - 7:57 pmSEA-ALO
12h 33m2 stops
$475American Airlines
Find Deal
Fri, Nov 7 - Sun, Nov 9
American Airlines Logo
6:00 am - 3:31 pmALO-SEA
11h 31m2 stops
American Airlines Logo
12:59 am - 2:58 pmSEA-ALO
11h 59m2 stops
$499American Airlines
Find Deal
Fri, Nov 7 - Sun, Nov 9
American Airlines Logo
3:28 pm - 11:18 pmALO-SEA
9h 50m1 stop
American Airlines Logo
12:59 am - 2:58 pmSEA-ALO
11h 59m1 stop
$728American Airlines
Find Deal
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 10000 reviews
6.5Food
7.2Comfort
6.9Entertainment
7.5Boarding
8.0Crew
Airline reviews

Very poor delay in dfw was really bad n long

2.0 Mediocredavix, Jul 2025DFW - MKE
Read more American Airlines reviews

Very poor delay in dfw was really bad n long

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

It was very difficult to stretch my knee out and I am very short. I also had a torn tendon in my knee which made it extra uncomfortable anyways. My husband is 6'2" and I can't imagine him flying in that plane.

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

Flight was cancelled 3 hrs AFTER etd. Thetefore Missed connection from JFK to New Zealand . No accommodation provided… This cost ne aporox 1000 USD in extra expenses and turned whst should have been a 24 hr trip ftom Boston - New Zealand into a VERY expensive , late 70+ hr nightmare … Complete nonsense!!!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

The flight got delayed 2.5 hrs due to a maintenance issue that cause a domino effect. American should have spare planes for when something like this happens.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

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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