Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Seattle to Sioux City from $430

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Sioux City departing on 8/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Sioux City

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 5:53 pm
SEA
-
SUX
8h 53m
1 stop
United Airlines Logo
6:30 pm - 11:04 pm
SUX
-
SEA
6h 34m
1 stop
$430United Airlines
sex, ago 28 - dom, ago 30
United Airlines Logo
2:34 pm - 11:42 pm
SEA
-
SUX
7h 08m
1 stop
United Airlines Logo
6:48 pm - 10:56 pm
SUX
-
SEA
6h 08m
1 stop
$464United Airlines
sex, out 2 - ter, out 6
United Airlines Logo
2:36 pm - 11:44 pm
SEA
-
SUX
7h 08m
1 stop
United Airlines Logo
8:08 am - 4:09 pm
SUX
-
SEA
10h 01m
1 stop
$478United Airlines
sex, mai 29 - ter, jun 2
United Airlines Logo
6:51 pm - 11:42 pm
SEA
-
SUX
26h 51m
2 stops
United Airlines Logo
6:48 pm - 10:56 pm
SUX
-
SEA
6h 08m
1 stop
$483United Airlines
sex, out 2 - ter, out 6
United Airlines Logo
7:00 am - 5:53 pm
SEA
-
SUX
8h 53m
1 stop
United Airlines Logo
11:32 am - 11:32 pm
SUX
-
SEA
14h 00m
2 stops
$484United Airlines
ter, jun 2 - sáb, jun 6
United Airlines Logo
3:55 pm - 11:42 pm
SEA
-
SUX
5h 47m
1 stop
United Airlines Logo
6:48 pm - 10:56 pm
SUX
-
SEA
6h 08m
1 stop
$504United Airlines
sex, out 2 - ter, out 6
United Airlines Logo
6:51 pm - 11:42 pm
SEA
-
SUX
26h 51m
2 stops
United Airlines Logo
6:48 pm - 10:56 pm
SUX
-
SEA
6h 08m
1 stop
$522United Airlines
sex, out 2 - ter, out 6
United Airlines Logo
2:34 pm - 11:42 pm
SEA
-
SUX
7h 08m
1 stop
United Airlines Logo
6:48 pm - 10:56 pm
SUX
-
SEA
6h 08m
1 stop
$525United Airlines
sex, out 2 - dom, out 4
United Airlines Logo
6:51 pm - 11:42 pm
SEA
-
SUX
26h 51m
2 stops
United Airlines Logo
6:48 pm - 10:56 pm
SUX
-
SEA
6h 08m
1 stop
$543United Airlines
sex, out 2 - dom, out 4
United Airlines Logo
2:36 pm - 11:44 pm
SEA
-
SUX
7h 08m
1 stop
United Airlines Logo
8:08 am - 7:18 pm
SUX
-
SEA
13h 10m
2 stops
$549United Airlines
sex, mai 29 - ter, jun 2

United Airlines flights from Seattle to Sioux City

Our best United Airlines deals on Seattle to Sioux City flight tickets
United Airlines
Aug 28
SEA7:00 amSeattle/Tacoma Intl
8h 53m
1 stop
SUX5:53 pmSioux City Sioux Gateway
Aug 30
SUX6:30 pmSioux City Sioux Gateway
6h 34m
1 stop
SEA11:04 pmSeattle/Tacoma Intl
$430
United Airlines
Oct 2
SEA2:34 pmSeattle/Tacoma Intl
7h 08m
1 stop
SUX11:42 pmSioux City Sioux Gateway
Oct 6
SUX6:48 pmSioux City Sioux Gateway
6h 08m
1 stop
SEA10:56 pmSeattle/Tacoma Intl
$464
United Airlines
May 29
SEA2:36 pmSeattle/Tacoma Intl
7h 08m
1 stop
SUX11:44 pmSioux City Sioux Gateway
Jun 2
SUX8:08 amSioux City Sioux Gateway
10h 01m
1 stop
SEA4:09 pmSeattle/Tacoma Intl
$478

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Sioux City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated maio 19, 2026.
Use the filters below to find and compare flights from Seattle to Sioux City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

sex 8/28

7:00 am-5:53 pm

1 stop8h 53m

Sioux City Sioux Gateway

dom 8/30

6:30 pm-11:04 pm

1 stop6h 34m

$430

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

sex 10/2

2:34 pm-11:42 pm

1 stop7h 08m

Sioux City Sioux Gateway

ter 10/6

6:48 pm-10:56 pm

1 stop6h 08m

$464

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

sex 5/29

2:36 pm-11:44 pm

1 stop7h 08m

Sioux City Sioux Gateway

ter 6/2

8:08 am-4:09 pm

1 stop10h 01m

$478

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

sex 10/2

6:51 pm-11:42 pm

2 stops26h 51m

Sioux City Sioux Gateway

ter 10/6

6:48 pm-10:56 pm

1 stop6h 08m

$483

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

ter 6/2

7:00 am-5:53 pm

1 stop8h 53m

Sioux City Sioux Gateway

sáb 6/6

11:32 am-11:32 pm

2 stops14h 00m

$484
Quickest round-trip

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

sex 10/2

3:55 pm-11:42 pm

1 stop5h 47m

Sioux City Sioux Gateway

ter 10/6

6:48 pm-10:56 pm

1 stop6h 08m

$504

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

sex 10/2

6:51 pm-11:42 pm

2 stops26h 51m

Sioux City Sioux Gateway

ter 10/6

6:48 pm-10:56 pm

1 stop6h 08m

$522

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

sex 10/2

2:34 pm-11:42 pm

1 stop7h 08m

Sioux City Sioux Gateway

dom 10/4

6:48 pm-10:56 pm

1 stop6h 08m

$525

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

sex 10/2

6:51 pm-11:42 pm

2 stops26h 51m

Sioux City Sioux Gateway

dom 10/4

6:48 pm-10:56 pm

1 stop6h 08m

$543

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

sex 5/29

2:36 pm-11:44 pm

1 stop7h 08m

Sioux City Sioux Gateway

ter 6/2

8:08 am-7:18 pm

2 stops13h 10m

$549

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Sioux City from

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, American Airlines and United 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 51% 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

5h 47m

Direct flights

None
The fastest flight from Seattle to Sioux City takes 5h 47m
There are no direct flights from Seattle to Sioux City. There are no popular flight routes from Seattle to Sioux City.
Search flight deals

Frequently asked questions about flying from Seattle to Sioux City

  • 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 5h 47m 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 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.

Traveling to a place near Sioux City?

Book flights to Sioux City if you plan to visit one of these locations
Norfolk

Why use momondo?

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.

An easier way to manage your Sioux City trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
qui 6/18
qui 6/25
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States