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

Prices for flights from Seattle/Tacoma Intl Airport to Sioux City Sioux Gateway Airport are updated daily.

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

The number of operators available for flights from Seattle/Tacoma Intl Airport to Sioux City Sioux Gateway Airport is 1 as of January 2026.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Sioux City Sioux Gateway Airport.

What documentation or ID do you need to fly to Sioux City Sioux Gateway Airport?

The travel and health documents you'll need for your trip to Sioux City Sioux Gateway Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sioux City Sioux Gateway Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$324 Cheap Flights from Seattle to Sioux City in 2026

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Find the cheapest flights from Seattle to Sioux City

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 5:28 pm

SEA

SUX

8h 28m

1 stop

6:00 am - 9:49 am

SUX

SEA

5h 49m

1 stop

$324United Airlines

Tue, Feb 10 - Sat, Feb 14

9:00 am - 11:47 pm

SEA

SUX

12h 47m

2 stops

6:00 am - 9:49 am

SUX

SEA

5h 49m

1 stop

$334United Airlines

Tue, Feb 10 - Sat, Feb 14

3:16 pm - 11:42 pm

SEA

SUX

6h 26m

1 stop

6:30 pm - 10:59 pm

SUX

SEA

6h 29m

1 stop

$348United Airlines

Fri, Feb 27 - Thu, Mar 5

9:25 am - 11:47 pm

SEA

SUX

12h 22m

2 stops

1:00 pm - 12:59 am

SUX

SEA

13h 59m

2 stops

$359United Airlines

Tue, Feb 10 - Sat, Feb 14

3:16 pm - 11:42 pm

SEA

SUX

6h 26m

1 stop

12:53 pm - 10:59 pm

SUX

SEA

12h 06m

2 stops

$441United Airlines

Fri, Feb 27 - Thu, Mar 5

7:00 am - 5:28 pm

SEA

SUX

8h 28m

1 stop

6:00 am - 9:55 am

SUX

SEA

5h 55m

1 stop

$504United Airlines

Fri, Jan 30 - Sun, Feb 1

7:00 am - 5:28 pm

SEA

SUX

8h 28m

1 stop

6:00 am - 4:29 pm

SUX

SEA

12h 29m

2 stops

$514United Airlines

Fri, Jan 30 - Sun, Feb 1

5:00 am - 5:28 pm

SEA

SUX

10h 28m

2 stops

6:00 am - 4:29 pm

SUX

SEA

12h 29m

2 stops

$519United Airlines

Fri, Jan 30 - Sun, Feb 1

7:00 am - 5:28 pm

SEA

SUX

8h 28m

1 stop

6:00 am - 9:55 am

SUX

SEA

5h 55m

1 stop

$534United Airlines

Fri, Jan 30 - Sun, Feb 1

12:35 pm - 11:47 pm

SEA

SUX

9h 12m

2 stops

6:00 am - 9:55 am

SUX

SEA

5h 55m

1 stop

$544United Airlines

Fri, Jan 30 - Sun, Feb 1

United Airlines flights from Seattle to Sioux City

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

United Airlines

Feb 10

SEA7:00 amSeattle/Tacoma Intl

8h 28m

1 stop

SUX5:28 pmSioux City Sioux Gateway

Feb 14

SUX6:00 amSioux City Sioux Gateway

5h 49m

1 stop

SEA9:49 amSeattle/Tacoma Intl

$324

United Airlines

Feb 10

SEA9:00 amSeattle/Tacoma Intl

12h 47m

2 stops

SUX11:47 pmSioux City Sioux Gateway

Feb 14

SUX6:00 amSioux City Sioux Gateway

5h 49m

1 stop

SEA9:49 amSeattle/Tacoma Intl

$334

United Airlines

Feb 27

SEA3:16 pmSeattle/Tacoma Intl

6h 26m

1 stop

SUX11:42 pmSioux City Sioux Gateway

Mar 5

SUX6:30 pmSioux City Sioux Gateway

6h 29m

1 stop

SEA10:59 pmSeattle/Tacoma Intl

$348

Fly from

Fly to

Route

Depart

Return

Price

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Tue 2/10

7:00 am-5:28 pm

1 stop8h 28m

Sioux City Sioux Gateway

Sat 2/14

6:00 am-9:49 am

1 stop5h 49m

$324

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Tue 2/10

9:00 am-11:47 pm

2 stops12h 47m

Sioux City Sioux Gateway

Sat 2/14

6:00 am-9:49 am

1 stop5h 49m

$334

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Fri 2/27

3:16 pm-11:42 pm

1 stop6h 26m

Sioux City Sioux Gateway

Thu 3/5

6:30 pm-10:59 pm

1 stop6h 29m

$348

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Tue 2/10

9:25 am-11:47 pm

2 stops12h 22m

Sioux City Sioux Gateway

Sat 2/14

1:00 pm-12:59 am

2 stops13h 59m

$359

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Fri 2/27

3:16 pm-11:42 pm

1 stop6h 26m

Sioux City Sioux Gateway

Thu 3/5

12:53 pm-10:59 pm

2 stops12h 06m

$441

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Fri 1/30

7:00 am-5:28 pm

1 stop8h 28m

Sioux City Sioux Gateway

Sun 2/1

6:00 am-9:55 am

1 stop5h 55m

$504

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Fri 1/30

7:00 am-5:28 pm

1 stop8h 28m

Sioux City Sioux Gateway

Sun 2/1

6:00 am-4:29 pm

2 stops12h 29m

$514

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Fri 1/30

5:00 am-5:28 pm

2 stops10h 28m

Sioux City Sioux Gateway

Sun 2/1

6:00 am-4:29 pm

2 stops12h 29m

$519

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Fri 1/30

7:00 am-5:28 pm

1 stop8h 28m

Sioux City Sioux Gateway

Sun 2/1

6:00 am-9:55 am

1 stop5h 55m

$534

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Fri 1/30

12:35 pm-11:47 pm

2 stops9h 12m

Sioux City Sioux Gateway

Sun 2/1

6:00 am-9:55 am

1 stop5h 55m

$544

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Seattle to Sioux City

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 Sioux City?

Alaska Airlines, United Airlines and American Airlines are the top three most popular airlines that fly to Sioux City from Seattle 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 Sioux City. Keep in mind that there are 7 different airlines that fly to Sioux City on a routine basis, so you have a few additional options to choose from.

When to book flights from Seattle to Sioux City

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

Estimated round-trip price

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

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

Fastest flight time	6h 26m
Direct flights	None

The fastest flight from Seattle to Sioux City takes 6h 26m

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

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How far is Seattle/Tacoma Intl to Sioux City Sioux Gateway by plane?
Sioux City Sioux Gateway is 1306.6 mi away from Seattle/Tacoma Intl. Typically, this will take 6h 26m by plane in normal conditions.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Sioux City Sioux Gateway Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Sioux City Sioux Gateway Airport are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Sioux City Sioux Gateway Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Sioux City Sioux Gateway Airport is 1 as of January 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Sioux City Sioux Gateway Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Sioux City Sioux Gateway Airport.
What documentation or ID do you need to fly to Sioux City Sioux Gateway Airport?
The travel and health documents you'll need for your trip to Sioux City Sioux Gateway Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sioux City Sioux Gateway Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Seattle to Sioux City?
Based on momondo bookings for flights between Seattle and Sioux City, the leading airline is United Airlines, making up 100% of the total bookings.

Best airlines flying from Seattle to Sioux City

Compare and see reviews for airlines that fly from Seattle to Sioux City with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $253	Free Cancellation	Rating 7.4 9,205 reviews		Search United Airlines flights

Norfolk

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

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

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

Flights from Seattle to Sioux City with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Sioux City.

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

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