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 36% 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 August 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.

$294 Cheap Flights from Waterloo, Iowa to Seattle (ALO-SEA) in 2025

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Find the cheapest flights from Waterloo, Iowa to Seattle (ALO-SEA)

Round-trip

One-way

Cheap round-trip flights

9:30 am - 8:05 pmALO-SEA

12h 35m2 stops

1:02 pm - 10:05 pmSEA-ALO

7h 03m1 stop

$294American Airlines

Find Deal

sáb., sep. 6 - mar., sep. 9

9:30 am - 8:05 pmALO-SEA

12h 35m2 stops

10:09 am - 10:05 pmSEA-ALO

9h 56m2 stops

$299American Airlines

Find Deal

sáb., sep. 6 - mar., sep. 9

3:28 pm - 11:18 pmALO-SEA

9h 50m1 stop

9:00 am - 7:57 pmSEA-ALO

8h 57m1 stop

$369American Airlines

Find Deal

sáb., nov. 15 - mar., nov. 18

6:00 am - 1:54 pmALO-SEA

9h 54m1 stop

6:05 am - 7:57 pmSEA-ALO

11h 52m2 stops

$374American Airlines

Find Deal

sáb., nov. 15 - mar., nov. 18

6:00 am - 2:48 pmALO-SEA

10h 48m2 stops

6:30 am - 7:57 pmSEA-ALO

11h 27m2 stops

$379American Airlines

Find Deal

sáb., nov. 15 - mar., nov. 18

3:14 pm - 8:19 pmALO-SEA

7h 05m1 stop

6:10 am - 2:44 pmSEA-ALO

6h 34m1 stop

$398American Airlines

Find Deal

mié., ago. 27 - dom., ago. 31

6:00 am - 2:48 pmALO-SEA

10h 48m2 stops

6:05 am - 7:57 pmSEA-ALO

11h 52m2 stops

$463American Airlines

Find Deal

sáb., nov. 15 - mar., nov. 18

6:00 am - 2:48 pmALO-SEA

10h 48m2 stops

6:05 am - 4:29 pmSEA-ALO

8h 24m1 stop

$466American Airlines

Find Deal

mié., sep. 10 - mié., sep. 17

6:00 am - 4:57 pmALO-SEA

12h 57m2 stops

6:10 am - 2:44 pmSEA-ALO

6h 34m1 stop

$491American Airlines

Find Deal

mié., ago. 27 - dom., ago. 31

6:00 am - 2:48 pmALO-SEA

10h 48m2 stops

10:09 am - 10:05 pmSEA-ALO

9h 56m2 stops

$555American Airlines

Find Deal

mié., sep. 10 - mié., sep. 17

American Airlines flights from Waterloo, Iowa to Seattle

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

American Airlines

Sep 6

ALO9:30 amWaterloo

12h 35m

2 stops

SEA8:05 pmSeattle/Tacoma Intl

Sep 9

SEA1:02 pmSeattle/Tacoma Intl

7h 03m

1 stop

ALO10:05 pmWaterloo

$294

Find similar

American Airlines

Sep 6

ALO9:30 amWaterloo

12h 35m

2 stops

SEA8:05 pmSeattle/Tacoma Intl

Sep 9

SEA10:09 amSeattle/Tacoma Intl

9h 56m

2 stops

ALO10:05 pmWaterloo

$299

Find similar

American Airlines

Nov 15

ALO3:28 pmWaterloo

9h 50m

1 stop

SEA11:18 pmSeattle/Tacoma Intl

Nov 18

SEA9:00 amSeattle/Tacoma Intl

8h 57m

1 stop

ALO7:57 pmWaterloo

$369

Find similar

Fly from

Fly to

Route

Depart

Return

Price

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

sáb. 9/6

9:30 am-8:05 pm

2 stops12h 35m

Seattle/Tacoma Intl

mar. 9/9

1:02 pm-10:05 pm

1 stop7h 03m

$294

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

sáb. 9/6

9:30 am-8:05 pm

2 stops12h 35m

Seattle/Tacoma Intl

mar. 9/9

10:09 am-10:05 pm

2 stops9h 56m

$299

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

sáb. 11/15

3:28 pm-11:18 pm

1 stop9h 50m

Seattle/Tacoma Intl

mar. 11/18

9:00 am-7:57 pm

1 stop8h 57m

$369

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

sáb. 11/15

6:00 am-1:54 pm

1 stop9h 54m

Seattle/Tacoma Intl

mar. 11/18

6:05 am-7:57 pm

2 stops11h 52m

$374

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

sáb. 11/15

6:00 am-2:48 pm

2 stops10h 48m

Seattle/Tacoma Intl

mar. 11/18

6:30 am-7:57 pm

2 stops11h 27m

$379

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

mié. 8/27

3:14 pm-8:19 pm

1 stop7h 05m

Seattle/Tacoma Intl

dom. 8/31

6:10 am-2:44 pm

1 stop6h 34m

$398

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

sáb. 11/15

6:00 am-2:48 pm

2 stops10h 48m

Seattle/Tacoma Intl

mar. 11/18

6:05 am-7:57 pm

2 stops11h 52m

$463

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

mié. 9/10

6:00 am-2:48 pm

2 stops10h 48m

Seattle/Tacoma Intl

mié. 9/17

6:05 am-4:29 pm

1 stop8h 24m

$466

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

mié. 8/27

6:00 am-4:57 pm

2 stops12h 57m

Seattle/Tacoma Intl

dom. 8/31

6:10 am-2:44 pm

1 stop6h 34m

$491

WaterlooSeattle

ALO - SEA

ALOSEA

Waterloo

mié. 9/10

6:00 am-2:48 pm

2 stops10h 48m

Seattle/Tacoma Intl

mié. 9/17

10:09 am-10:05 pm

2 stops9h 56m

$555

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.

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

Best Price Found	$294
Fastest flight time	7h 05m
Direct flights	None
Airports in Seattle	1 airport

The best flight deal from Waterloo, Iowa to Seattle found on momondo in the last 72 hours is $294

The fastest flight from Waterloo, Iowa to Seattle takes 7h 05m

There are no direct flights from Waterloo, Iowa to Seattle. Popular non-direct route for this connection is Waterloo Airport - Seattle/Tacoma Intl Airport.

There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

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 7h 05m, 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 August 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 10,000 reviews		Search American Airlines flights

Leavenworth

Tacoma

SeaTac

Ocean Shores

Olympia

Renton

Kent

Lynnwood

Federal Way

Puyallup

Marysville

Tukwila

Kirkland

Lakewood

Centralia

Shoreline

Cle Elum

Fife

Westport

Redmond

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Waterloo to Seattle. Millions of users trust and use momondo every year so you are in good hands.

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.