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.

$230 Cheap Flights from Sioux City to Seattle in 2026/27

Find the cheapest flights from Sioux City to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:58 pm - 10:59 pmSUX Sioux City Sioux Gateway-SEA Seattle/Tacoma Intl

6h 01m1 stop Denver Intl

3:49 pm - 11:43 pmSEA Seattle/Tacoma Intl-SUX Sioux City Sioux Gateway

5h 54m1 stop Denver Intl

$344United Airlines

Wed, Oct 21 - Fri, Nov 6

8:35 am - 3:52 pmSUX Sioux City Sioux Gateway-SEA Seattle/Tacoma Intl

9h 17m1 stop Chicago O'Hare Intl

2:27 pm - 11:43 pmSEA Seattle/Tacoma Intl-SUX Sioux City Sioux Gateway

7h 16m1 stop Denver Intl

$366United Airlines

Sat, Oct 17 - Mon, Oct 19

6:58 pm - 10:59 pmSUX Sioux City Sioux Gateway-SEA Seattle/Tacoma Intl

6h 01m1 stop Denver Intl

10:40 am - 11:43 pmSEA Seattle/Tacoma Intl-SUX Sioux City Sioux Gateway

11h 03m2 stops San Francisco Denver Intl

$385United Airlines

Wed, Oct 21 - Fri, Nov 6

8:35 am - 6:44 pmSUX Sioux City Sioux Gateway-SEA Seattle/Tacoma Intl

12h 09m2 stops Chicago O'Hare Intl San Francisco

2:27 pm - 11:43 pmSEA Seattle/Tacoma Intl-SUX Sioux City Sioux Gateway

7h 16m1 stop Denver Intl

$446United Airlines

Sat, Oct 17 - Mon, Oct 19

8:35 am - 3:51 pmSUX Sioux City Sioux Gateway-SEA Seattle/Tacoma Intl

9h 16m1 stop Chicago O'Hare Intl

3:55 pm - 11:43 pmSEA Seattle/Tacoma Intl-SUX Sioux City Sioux Gateway

5h 48m1 stop Denver Intl

$454United Airlines

Tue, Oct 20 - Sat, Oct 24

8:35 am - 8:37 pmSUX Sioux City Sioux Gateway-SEA Seattle/Tacoma Intl

14h 02m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

3:55 pm - 11:43 pmSEA Seattle/Tacoma Intl-SUX Sioux City Sioux Gateway

5h 48m1 stop Denver Intl

$459United Airlines

Tue, Oct 20 - Sat, Oct 24

8:35 am - 8:37 pmSUX Sioux City Sioux Gateway-SEA Seattle/Tacoma Intl

14h 02m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

10:44 am - 11:43 pmSEA Seattle/Tacoma Intl-SUX Sioux City Sioux Gateway

10h 59m2 stops San Francisco Denver Intl

$469United Airlines

Tue, Oct 20 - Sat, Oct 24

8:35 am - 3:51 pmSUX Sioux City Sioux Gateway-SEA Seattle/Tacoma Intl

9h 16m1 stop Chicago O'Hare Intl

3:55 pm - 11:43 pmSEA Seattle/Tacoma Intl-SUX Sioux City Sioux Gateway

5h 48m1 stop Denver Intl

$489United Airlines

Tue, Oct 20 - Sat, Oct 24

6:00 am - 8:47 pmSUX Sioux City Sioux Gateway-SEA Seattle/Tacoma Intl

16h 47m2 stops Chicago O'Hare Intl San Francisco

7:00 am - 6:10 pmSEA Seattle/Tacoma Intl-SUX Sioux City Sioux Gateway

9h 10m1 stop Chicago O'Hare Intl

$494United Airlines

Thu, Oct 29 - Sun, Nov 1

6:58 pm - 10:59 pmSUX Sioux City Sioux Gateway-SEA Seattle/Tacoma Intl

6h 01m1 stop Denver Intl

7:00 am - 5:53 pmSEA Seattle/Tacoma Intl-SUX Sioux City Sioux Gateway

8h 53m1 stop Chicago O'Hare Intl

$499United Airlines

Mon, Oct 19 - Thu, Oct 22

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United Airlines flights from Sioux City to Seattle

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

United Airlines

Oct 21

SUX6:58 pmSioux City Sioux Gateway

6h 01m

1 stop

SEA10:59 pmSeattle/Tacoma Intl

Nov 6

SEA3:49 pmSeattle/Tacoma Intl

5h 54m

1 stop

SUX11:43 pmSioux City Sioux Gateway

$344

United Airlines

Oct 17

SUX8:35 amSioux City Sioux Gateway

9h 17m

1 stop

SEA3:52 pmSeattle/Tacoma Intl

Oct 19

SEA2:27 pmSeattle/Tacoma Intl

7h 16m

1 stop

SUX11:43 pmSioux City Sioux Gateway

$366

United Airlines

Oct 21

SUX6:58 pmSioux City Sioux Gateway

6h 01m

1 stop

SEA10:59 pmSeattle/Tacoma Intl

Nov 6

SEA10:40 amSeattle/Tacoma Intl

11h 03m

2 stops

SUX11:43 pmSioux City Sioux Gateway

$385

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Wed 10/21

6:58 pm-10:59 pm

1 stop6h 01m

Seattle/Tacoma Intl

Fri 11/6

3:49 pm-11:43 pm

1 stop5h 54m

$344

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Sat 10/17

8:35 am-3:52 pm

1 stop9h 17m

Seattle/Tacoma Intl

Mon 10/19

2:27 pm-11:43 pm

1 stop7h 16m

$366

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Wed 10/21

6:58 pm-10:59 pm

1 stop6h 01m

Seattle/Tacoma Intl

Fri 11/6

10:40 am-11:43 pm

2 stops11h 03m

$385

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Sat 10/17

8:35 am-6:44 pm

2 stops12h 09m

Seattle/Tacoma Intl

Mon 10/19

2:27 pm-11:43 pm

1 stop7h 16m

$446

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Tue 10/20

8:35 am-3:51 pm

1 stop9h 16m

Seattle/Tacoma Intl

Sat 10/24

3:55 pm-11:43 pm

1 stop5h 48m

$454

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Tue 10/20

8:35 am-8:37 pm

2 stops14h 02m

Seattle/Tacoma Intl

Sat 10/24

3:55 pm-11:43 pm

1 stop5h 48m

$459

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Tue 10/20

8:35 am-8:37 pm

2 stops14h 02m

Seattle/Tacoma Intl

Sat 10/24

10:44 am-11:43 pm

2 stops10h 59m

$469

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Tue 10/20

8:35 am-3:51 pm

1 stop9h 16m

Seattle/Tacoma Intl

Sat 10/24

3:55 pm-11:43 pm

1 stop5h 48m

$489

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Thu 10/29

6:00 am-8:47 pm

2 stops16h 47m

Seattle/Tacoma Intl

Sun 11/1

7:00 am-6:10 pm

1 stop9h 10m

$494

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Mon 10/19

6:58 pm-10:59 pm

1 stop6h 01m

Seattle/Tacoma Intl

Thu 10/22

7:00 am-5:53 pm

1 stop8h 53m

$499

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted 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 is the cheapest airline that flies from Sioux City Sioux Gateway to Seattle/Tacoma Intl?

United Airlines is the most popular carrier operating from Sioux City Sioux Gateway to Seattle/Tacoma Intl

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 49% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 5 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

Best Price Found	$230
Fastest flight time	6h 01m
Direct flights	None

The best one-way flight to Seattle from Sioux City in the past 72 hours is $230. The best round-trip flight deal from Sioux City to Seattle found on momondo in the last 72 hours is $344.

The fastest flight from Sioux City to Seattle takes 6h 01m

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

Search flight deals

Frequently asked questions about flying from Sioux City to Seattle

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. 6h 01m 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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Kent

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Lakewood

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Fife

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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.