What airlines fly to Seattle?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Seattle from Waterloo, Iowa according to our data. American Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 6 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

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

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

How many operators does momondo search for flights from Waterloo Airport to Seattle/Tacoma Intl Airport?

The number of operators available for flights from Waterloo Airport to Seattle/Tacoma Intl Airport is 1 as of November 2025.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Waterloo Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$289 Cheap Flights from Waterloo to Seattle in 2025/26

1 adult

0 bags

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Find the cheapest flights from Waterloo, Iowa to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:27 pm - 11:25 pmALO-SEA

9h 58m1 stop

2:46 pm - 11:51 pmSEA-ALO

7h 05m1 stop

$289American Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

3:27 pm - 11:25 pmALO-SEA

9h 58m1 stop

8:30 am - 11:51 pmSEA-ALO

13h 21m2 stops

$294American Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

6:00 am - 3:24 pmALO-SEA

11h 24m2 stops

8:30 am - 11:51 pmSEA-ALO

13h 21m2 stops

$299American Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

6:00 am - 12:38 pmALO-SEA

8h 38m1 stop

2:46 pm - 11:51 pmSEA-ALO

7h 05m1 stop

$369American Airlines

Find Deal

Tue, Dec 9 - Sat, Dec 13

6:00 am - 8:18 pmALO-SEA

16h 18m2 stops

2:46 pm - 11:51 pmSEA-ALO

7h 05m1 stop

$374American Airlines

Find Deal

Tue, Dec 9 - Sat, Dec 13

6:00 am - 5:51 pmALO-SEA

13h 51m2 stops

8:30 am - 11:51 pmSEA-ALO

13h 21m2 stops

$379American Airlines

Find Deal

Tue, Dec 9 - Sat, Dec 13

3:27 pm - 11:25 pmALO-SEA

9h 58m1 stop

12:31 am - 2:56 pmSEA-ALO

12h 25m2 stops

$410American Airlines

Find Deal

Wed, Dec 10 - Fri, Dec 12

6:00 am - 3:24 pmALO-SEA

11h 24m2 stops

12:31 am - 2:56 pmSEA-ALO

12h 25m2 stops

$415American Airlines

Find Deal

Wed, Dec 10 - Fri, Dec 12

6:00 am - 8:18 pmALO-SEA

16h 18m2 stops

2:46 pm - 11:51 pmSEA-ALO

7h 05m1 stop

$478American Airlines

Find Deal

Sat, Dec 13 - Sun, Dec 14

6:00 am - 3:58 pmALO-SEA

11h 58m2 stops

1:33 am - 2:20 pmSEA-ALO

10h 47m2 stops

$483American Airlines

Find Deal

Sat, Mar 7 - Mon, Mar 9

American Airlines flights from Waterloo, Iowa to Seattle

Our best American Airlines deals on Waterloo, Iowa to Seattle flight tickets

American Airlines

Dec 10

ALO3:27 pmWaterloo

9h 58m

1 stop

SEA11:25 pmSeattle/Tacoma Intl

Dec 13

SEA2:46 pmSeattle/Tacoma Intl

7h 05m

1 stop

ALO11:51 pmWaterloo

$289

Find similar

American Airlines

Dec 10

ALO3:27 pmWaterloo

9h 58m

1 stop

SEA11:25 pmSeattle/Tacoma Intl

Dec 13

SEA8:30 amSeattle/Tacoma Intl

13h 21m

2 stops

ALO11:51 pmWaterloo

$294

Find similar

American Airlines

Dec 10

ALO6:00 amWaterloo

11h 24m

2 stops

SEA3:24 pmSeattle/Tacoma Intl

Dec 13

SEA8:30 amSeattle/Tacoma Intl

13h 21m

2 stops

ALO11:51 pmWaterloo

$299

Find similar

Fly from

Fly to

Route

Depart

Return

Price

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Wed 12/10

3:27 pm-11:25 pm

1 stop9h 58m

Seattle/Tacoma Intl

Sat 12/13

2:46 pm-11:51 pm

1 stop7h 05m

$289

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Wed 12/10

3:27 pm-11:25 pm

1 stop9h 58m

Seattle/Tacoma Intl

Sat 12/13

8:30 am-11:51 pm

2 stops13h 21m

$294

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Wed 12/10

6:00 am-3:24 pm

2 stops11h 24m

Seattle/Tacoma Intl

Sat 12/13

8:30 am-11:51 pm

2 stops13h 21m

$299

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Tue 12/9

6:00 am-12:38 pm

1 stop8h 38m

Seattle/Tacoma Intl

Sat 12/13

2:46 pm-11:51 pm

1 stop7h 05m

$369

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Tue 12/9

6:00 am-8:18 pm

2 stops16h 18m

Seattle/Tacoma Intl

Sat 12/13

2:46 pm-11:51 pm

1 stop7h 05m

$374

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Tue 12/9

6:00 am-5:51 pm

2 stops13h 51m

Seattle/Tacoma Intl

Sat 12/13

8:30 am-11:51 pm

2 stops13h 21m

$379

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Wed 12/10

3:27 pm-11:25 pm

1 stop9h 58m

Seattle/Tacoma Intl

Fri 12/12

12:31 am-2:56 pm

2 stops12h 25m

$410

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Wed 12/10

6:00 am-3:24 pm

2 stops11h 24m

Seattle/Tacoma Intl

Fri 12/12

12:31 am-2:56 pm

2 stops12h 25m

$415

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Sat 12/13

6:00 am-8:18 pm

2 stops16h 18m

Seattle/Tacoma Intl

Sun 12/14

2:46 pm-11:51 pm

1 stop7h 05m

$478

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

Sat 3/7

6:00 am-3:58 pm

2 stops11h 58m

Seattle/Tacoma Intl

Mon 3/9

1:33 am-2:20 pm

2 stops10h 47m

$483

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

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

Prices

Airlines

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Waterloo, Iowa is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $554. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Waterloo, Iowa because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $834.

Can stopping save me money on Waterloo, Iowa to Seattle flights?

You could potentially save up to 33% on your flight if you consider stops on a Waterloo, Iowa to Seattle flight.

When to book flights from Waterloo, Iowa to Seattle

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

Estimated round-trip price

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

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

Direct flights	None

There are no direct flights from Waterloo, Iowa to Seattle. There are no popular flight routes from Waterloo, Iowa to Seattle.

Search flight deals

How far is Waterloo to Seattle/Tacoma Intl by plane?
There are 1495.1 mi between Waterloo and Seattle/Tacoma Intl. Flights usually cover this in 8h 38m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Waterloo Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Waterloo Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Waterloo Airport to Seattle/Tacoma Intl Airport?
The number of operators available for flights from Waterloo Airport to Seattle/Tacoma Intl Airport is 1 as of November 2025.
How old do you have to be to fly from Waterloo Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Waterloo Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Waterloo, Iowa to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Waterloo, Iowa to Seattle is American Airlines (100% of total bookings).

Best airlines flying from Waterloo, Iowa to Seattle

Compare and see reviews for airlines that fly from Waterloo, Iowa to Seattle with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.2 11,037 reviews		Search American Airlines flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Puyallup

Marysville

Redmond

Tukwila

Federal Way

Lakewood

Cle Elum

Fife

Centralia

Kirkland

Shoreline

Westport

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

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

All flight searches from Waterloo to Seattle on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Waterloo and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Waterloo and alert you when they change.