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Cheap flights from Seattle to Waterloo from $442

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Waterloo departing on 3/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Waterloo

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
3:06 pm - 11:59 pm
SEA
-
ALO
6h 53m
1 stop
American Airlines Logo
3:26 pm - 11:35 pm
ALO
-
SEA
10h 09m
1 stop
$539American Airlines
Wed, Jul 8 - Sun, Jul 12
American Airlines Logo
3:06 pm - 11:59 pm
SEA
-
ALO
6h 53m
1 stop
American Airlines Logo
5:00 am - 1:48 pm
ALO
-
SEA
10h 48m
2 stops
$544American Airlines
Wed, Jul 8 - Sun, Jul 12
American Airlines Logo
11:59 pm - 1:53 pm
SEA
-
ALO
11h 54m
2 stops
American Airlines Logo
5:40 am - 12:29 pm
ALO
-
SEA
8h 49m
1 stop
$624American Airlines
Mon, Apr 6 - Mon, Apr 13
American Airlines Logo
11:07 am - 11:59 pm
SEA
-
ALO
10h 52m
2 stops
American Airlines Logo
5:00 am - 1:48 pm
ALO
-
SEA
10h 48m
2 stops
$628American Airlines
Wed, Jul 8 - Sun, Jul 12
American Airlines Logo
11:59 pm - 1:53 pm
SEA
-
ALO
11h 54m
2 stops
American Airlines Logo
2:23 pm - 12:44 am
ALO
-
SEA
12h 21m
2 stops
$629American Airlines
Mon, Apr 6 - Mon, Apr 13
American Airlines Logo
1:37 pm - 11:53 pm
SEA
-
ALO
8h 16m
1 stop
American Airlines Logo
5:40 am - 12:29 pm
ALO
-
SEA
8h 49m
1 stop
$641American Airlines
Mon, Apr 6 - Mon, Apr 13
American Airlines Logo
1:46 pm - 12:09 am
SEA
-
ALO
8h 23m
1 stop
American Airlines Logo
3:02 pm - 8:33 pm
ALO
-
SEA
7h 31m
1 stop
$659American Airlines
Fri, Jun 5 - Sun, Jun 7
American Airlines Logo
6:00 am - 2:32 pm
SEA
-
ALO
6h 32m
1 stop
American Airlines Logo
5:00 am - 2:55 pm
ALO
-
SEA
11h 55m
2 stops
$664American Airlines
Fri, Jun 5 - Sun, Jun 7
American Airlines Logo
12:59 am - 2:32 pm
SEA
-
ALO
11h 33m
2 stops
American Airlines Logo
5:00 am - 2:55 pm
ALO
-
SEA
11h 55m
2 stops
$691American Airlines
Thu, Jun 4 - Sun, Jun 7

American Airlines flights from Seattle to Waterloo, Iowa

Our best American Airlines deals on Seattle to Waterloo, Iowa flight tickets
American Airlines
Jul 8
SEA3:06 pmSeattle/Tacoma Intl
6h 53m
1 stop
ALO11:59 pmWaterloo
Jul 12
ALO3:26 pmWaterloo
10h 09m
1 stop
SEA11:35 pmSeattle/Tacoma Intl
$539
American Airlines
Jul 8
SEA3:06 pmSeattle/Tacoma Intl
6h 53m
1 stop
ALO11:59 pmWaterloo
Jul 12
ALO5:00 amWaterloo
10h 48m
2 stops
SEA1:48 pmSeattle/Tacoma Intl
$544
American Airlines
Apr 6
SEA11:59 pmSeattle/Tacoma Intl
11h 54m
2 stops
ALO1:53 pmWaterloo
Apr 13
ALO5:40 amWaterloo
8h 49m
1 stop
SEA12:29 pmSeattle/Tacoma Intl
$624

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Waterloo, Iowa 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, momondo users made 832,500 searches. Data last updated March 14, 2026.
Use the filters below to find and compare flights from Seattle to Waterloo, Iowa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Wed 7/8

3:06 pm-11:59 pm

1 stop6h 53m

Waterloo

Sun 7/12

3:26 pm-11:35 pm

1 stop10h 09m

$539

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Wed 7/8

3:06 pm-11:59 pm

1 stop6h 53m

Waterloo

Sun 7/12

5:00 am-1:48 pm

2 stops10h 48m

$544

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Mon 4/6

11:59 pm-1:53 pm

2 stops11h 54m

Waterloo

Mon 4/13

5:40 am-12:29 pm

1 stop8h 49m

$624

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Wed 7/8

11:07 am-11:59 pm

2 stops10h 52m

Waterloo

Sun 7/12

5:00 am-1:48 pm

2 stops10h 48m

$628

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Mon 4/6

11:59 pm-1:53 pm

2 stops11h 54m

Waterloo

Mon 4/13

2:23 pm-12:44 am

2 stops12h 21m

$629

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Mon 4/6

1:37 pm-11:53 pm

1 stop8h 16m

Waterloo

Mon 4/13

5:40 am-12:29 pm

1 stop8h 49m

$641
Quickest round-trip

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Fri 6/5

1:46 pm-12:09 am

1 stop8h 23m

Waterloo

Sun 6/7

3:02 pm-8:33 pm

1 stop7h 31m

$659

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Fri 6/5

6:00 am-2:32 pm

1 stop6h 32m

Waterloo

Sun 6/7

5:00 am-2:55 pm

2 stops11h 55m

$664

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Thu 6/4

12:59 am-2:32 pm

2 stops11h 33m

Waterloo

Sun 6/7

5:00 am-2:55 pm

2 stops11h 55m

$691
Cheapest one-way
Quickest one-way

SeattleWaterloo

SEA - ALO

SEAALO

Seattle/Tacoma Intl

Tue 3/31

1:37 pm-11:53 pm

1 stop8h 16m

$442

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
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See travel insights to Waterloo from

How to get the cheapest flight ticket from Seattle to Waterloo, Iowa

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Seattle/Tacoma Intl to Waterloo?

American Airlines is the most popular carrier operating from Seattle/Tacoma Intl to Waterloo

What airlines fly to Waterloo, Iowa?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Waterloo, Iowa from Seattle according to our data. American Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Waterloo, Iowa. Keep in mind that there are 6 different airlines that fly to Waterloo, Iowa on a routine basis, so you have a few additional options to choose from.

When to book flights from Seattle to Waterloo, Iowa

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Waterloo, Iowa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Waterloo, Iowa (SEA to ALO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Waterloo, Iowa

Fastest flight time

6h 53m

Direct flights

None
The fastest flight from Seattle to Waterloo, Iowa takes 6h 53m
There are no direct flights from Seattle to Waterloo, Iowa. There are no popular flight routes from Seattle to Waterloo, Iowa.
Search flight deals

  • How far is Seattle/Tacoma Intl to Waterloo by plane?

    There are 1495.1 mi between Seattle/Tacoma Intl and Waterloo. 6h 53m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Waterloo Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Waterloo Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Waterloo Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Waterloo Airport.

  • What documentation or ID do you need to fly to Waterloo Airport?

    The travel and health documents required for your trip to Waterloo Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Waterloo Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Waterloo?

Book flights to Waterloo if you plan to visit one of these locations
Cedar Falls
Iowa Falls

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Waterloo?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Waterloo for you.

Can I find flights from Seattle to Waterloo with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Waterloo from Seattle with this policy.

How can momondo help me find flights from Seattle to Waterloo?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Waterloo from Seattle.

I’m not ready to book a flight from Seattle to Waterloo right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Waterloo from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Waterloo, Iowa trip

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