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

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

How old do you have to be to fly from Sioux City Sioux Gateway Airport to Seattle/Tacoma Intl 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 Sioux City Sioux Gateway 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.

$298 Cheap Flights from Sioux City to Seattle in 2026

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Cheap round-trip flights

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1:00 pm - 11:30 pm

SUX

SEA

12h 30m2 stops

7:00 am - 5:41 pm

SEA

SUX

8h 41m1 stop

$326United Airlines

Tue, Mar 3 - Sun, Mar 8

6:00 am - 9:49 am

SUX

SEA

5h 49m1 stop

5:00 am - 9:45 am

SEA

SUX

26h 45m1 stop

$352United Airlines

Tue, Mar 3 - Sat, Mar 7

1:00 pm - 11:30 pm

SUX

SEA

12h 30m2 stops

3:30 pm - 9:45 am

SEA

SUX

16h 15m1 stop

$362United Airlines

Tue, Mar 3 - Sat, Mar 7

1:00 pm - 11:30 pm

SUX

SEA

12h 30m2 stops

3:30 pm - 9:45 am

SEA

SUX

16h 15m1 stop

$372United Airlines

Tue, Mar 3 - Sat, Mar 7

6:00 am - 9:49 am

SUX

SEA

5h 49m1 stop

12:36 pm - 4:41 pm

SEA

SUX

26h 05m2 stops

$396United Airlines

Tue, Mar 3 - Sat, Mar 7

1:00 pm - 11:30 pm

SUX

SEA

12h 30m2 stops

5:20 pm - 9:45 am

SEA

SUX

14h 25m2 stops

$417United Airlines

Tue, Mar 3 - Sat, Mar 7

6:54 pm - 10:59 pm

SUX

SEA

6h 05m1 stop

9:02 am - 11:42 pm

SEA

SUX

12h 40m2 stops

$423United Airlines

Wed, May 20 - Sun, May 24

6:54 pm - 10:59 pm

SUX

SEA

6h 05m1 stop

7:10 pm - 10:39 am

SEA

SUX

13h 29m1 stop

$456United Airlines

Mon, Jun 8 - Wed, Jun 17

6:54 pm - 10:59 pm

SUX

SEA

6h 05m1 stop

5:07 am - 11:42 pm

SEA

SUX

16h 35m1 stop

$457United Airlines

Mon, Jun 8 - Thu, Jun 18

6:00 am - 4:21 pm

SUX

SEA

12h 21m2 stops

12:36 pm - 4:41 pm

SEA

SUX

26h 05m2 stops

$460United Airlines

Tue, Mar 3 - Sat, Mar 7

United Airlines flights from Sioux City to Seattle

Our best United Airlines deals on Sioux City to Seattle flight tickets

United Airlines

Mar 3

SUX1:00 pmSioux City Sioux Gateway

12h 30m

2 stops

SEA11:30 pmSeattle/Tacoma Intl

Mar 8

SEA7:00 amSeattle/Tacoma Intl

8h 41m

1 stop

SUX5:41 pmSioux City Sioux Gateway

$326

United Airlines

Mar 3

SUX1:00 pmSioux City Sioux Gateway

8h 03m

1 stop

SEA7:03 pmSeattle/Tacoma Intl

Mar 8

SEA7:10 pmSeattle/Tacoma Intl

13h 35m

1 stop

SUX10:45 amSioux City Sioux Gateway

$352

United Airlines

Mar 3

SUX1:00 pmSioux City Sioux Gateway

12h 30m

2 stops

SEA11:30 pmSeattle/Tacoma Intl

Mar 7

SEA3:30 pmSeattle/Tacoma Intl

16h 15m

1 stop

SUX9:45 amSioux City Sioux Gateway

$362

Fly from

Fly to

Route

Depart

Return

Price

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Tue 3/3

1:00 pm-11:30 pm

2 stops12h 30m

Seattle/Tacoma Intl

Sun 3/8

7:00 am-5:41 pm

1 stop8h 41m

$326

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Tue 3/3

6:00 am-9:49 am

1 stop5h 49m

Seattle/Tacoma Intl

Sat 3/7

5:00 am-9:45 am

1 stop26h 45m

$352

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Tue 3/3

1:00 pm-11:30 pm

2 stops12h 30m

Seattle/Tacoma Intl

Sat 3/7

3:30 pm-9:45 am

1 stop16h 15m

$362

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Tue 3/3

1:00 pm-11:30 pm

2 stops12h 30m

Seattle/Tacoma Intl

Sat 3/7

3:30 pm-9:45 am

1 stop16h 15m

$372

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Tue 3/3

6:00 am-9:49 am

1 stop5h 49m

Seattle/Tacoma Intl

Sat 3/7

12:36 pm-4:41 pm

2 stops26h 05m

$396

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Tue 3/3

1:00 pm-11:30 pm

2 stops12h 30m

Seattle/Tacoma Intl

Sat 3/7

5:20 pm-9:45 am

2 stops14h 25m

$417

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Wed 5/20

6:54 pm-10:59 pm

1 stop6h 05m

Seattle/Tacoma Intl

Sun 5/24

9:02 am-11:42 pm

2 stops12h 40m

$423

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Mon 6/8

6:54 pm-10:59 pm

1 stop6h 05m

Seattle/Tacoma Intl

Wed 6/17

7:10 pm-10:39 am

1 stop13h 29m

$456

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Mon 6/8

6:54 pm-10:59 pm

1 stop6h 05m

Seattle/Tacoma Intl

Thu 6/18

5:07 am-11:42 pm

1 stop16h 35m

$457

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Tue 3/3

6:00 am-4:21 pm

2 stops12h 21m

Seattle/Tacoma Intl

Sat 3/7

12:36 pm-4:41 pm

2 stops26h 05m

$460

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Sioux City 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

What airlines fly to Seattle?

Alaska Airlines, United Airlines and American Airlines are the top three most popular airlines that fly to Seattle from Sioux City according to our data. Alaska Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 7 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

When to book flights from Sioux City to Seattle

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

Estimated round-trip price

Cheap Sioux City to Seattle (SUX to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sioux City to Seattle

Fastest flight time	5h 49m
Direct flights	None

The fastest flight from Sioux City to Seattle takes 5h 49m

There are no direct flights from Sioux City to Seattle. There are no popular flight routes from Sioux City to Seattle.

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How far is Sioux City Sioux Gateway to Seattle/Tacoma Intl by plane?
There are 1306.6 mi between Sioux City Sioux Gateway and Seattle/Tacoma Intl. 5h 49m is a normal flight duration for this route.
When did momondo last update prices for flights from Sioux City Sioux Gateway Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Sioux City Sioux Gateway Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How old do you have to be to fly from Sioux City Sioux Gateway Airport to Seattle/Tacoma Intl 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 Sioux City Sioux Gateway 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.

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Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Sioux City.

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

Yes. momondo allows you to filter the results for Sioux City to Seattle flights to just show those with flexible booking policies.

How can momondo help me find flights from Sioux City to Seattle?

Once all potential Sioux City to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Sioux City 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 Sioux City and alert you when they change.