What airlines fly to Sioux City?

Alaska Airlines, United Airlines and Delta 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 48% 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 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 April 2025.

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.

$315 Cheap Flights from Seattle to Sioux City - Save in Minutes

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Find the cheapest flights from Seattle to Sioux City

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One-way

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Cheap round-trip flights

These are some of the best round-trip flight deals from Seattle to Sioux City that have been recently found on momondo from popular airlines, departing in the coming months.

6:15 am - 10:30 pmSEA-SUX

14h 15m2 stops

3:26 pm - 12:59 amSUX-SEA

11h 33m2 stops

$459United Airlines

Find Deal

Wed, May 14 - Sun, May 18

5:18 pm - 10:30 pmSEA-SUX

27h 12m1 stop

3:26 pm - 12:59 amSUX-SEA

11h 33m2 stops

$494United Airlines

Find Deal

Wed, May 14 - Sun, May 18

5:18 pm - 10:30 pmSEA-SUX

27h 12m1 stop

3:26 pm - 9:02 pmSUX-SEA

7h 36m1 stop

$544United Airlines

Find Deal

Wed, May 14 - Sun, May 18

6:25 am - 10:40 pmSEA-SUX

14h 15m2 stops

6:35 pm - 10:18 pmSUX-SEA

5h 43m1 stop

$584United Airlines

Find Deal

Sat, Jun 14 - Sat, Jun 21

5:15 am - 5:15 pmSEA-SUX

10h 00m1 stop

6:35 pm - 10:18 pmSUX-SEA

5h 43m1 stop

$605United Airlines

Find Deal

Sat, Jun 14 - Sat, Jun 21

7:00 am - 10:30 pmSEA-SUX

13h 30m3 stops

3:26 pm - 12:59 amSUX-SEA

11h 33m2 stops

$619United Airlines

Find Deal

Wed, May 14 - Sun, May 18

1:49 pm - 10:40 pmSEA-SUX

6h 51m1 stop

6:35 pm - 8:01 amSUX-SEA

15h 26m1 stop

$630United Airlines

Find Deal

Fri, Jun 13 - Fri, Jun 20

6:25 am - 10:40 pmSEA-SUX

14h 15m2 stops

6:35 pm - 8:01 amSUX-SEA

15h 26m1 stop

$640United Airlines

Find Deal

Fri, Jun 13 - Fri, Jun 20

5:15 am - 5:15 pmSEA-SUX

10h 00m1 stop

6:35 pm - 8:01 amSUX-SEA

15h 26m1 stop

$648United Airlines

Find Deal

Thu, Jun 12 - Thu, Jun 19

6:25 am - 10:40 pmSEA-SUX

14h 15m2 stops

6:35 pm - 6:48 pmSUX-SEA

26h 13m2 stops

$652United Airlines

Find Deal

Fri, Jun 13 - Fri, Jun 20

United Airlines flights from Seattle to Sioux City

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

United Airlines

May 14

SEA6:15 amSeattle/Tacoma Intl

14h 15m

2 stops

SUX10:30 pmSioux City Sioux Gateway

May 18

SUX3:26 pmSioux City Sioux Gateway

11h 33m

2 stops

SEA12:59 amSeattle/Tacoma Intl

$459

Find similar

United Airlines

May 14

SEA5:18 pmSeattle/Tacoma Intl

27h 12m

1 stop

SUX10:30 pmSioux City Sioux Gateway

May 18

SUX3:26 pmSioux City Sioux Gateway

11h 33m

2 stops

SEA12:59 amSeattle/Tacoma Intl

$494

Find similar

United Airlines

May 5

SEA6:15 amSeattle/Tacoma Intl

14h 15m

2 stops

SUX10:30 pmSioux City Sioux Gateway

May 12

SUX3:26 pmSioux City Sioux Gateway

11h 33m

2 stops

SEA12:59 amSeattle/Tacoma Intl

$519

Find similar

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

Prices

Airlines

What is the cheapest day to depart on your flight to Sioux City?

On average, the least expensive day to fly to Sioux City from Seattle is on a Thursday. momondo users have found tickets for Thursday departures for as low as $461. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Wednesday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $493.

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

Best Price Found	$459
Fastest flight time	6h 51m
Direct flights	None
Airports in Sioux City	1 airport

The best flight deal from Seattle to Sioux City found on momondo in the last 72 hours is $459

The fastest flight from Seattle to Sioux City takes 6h 51m

There are no direct flights from Seattle to Sioux City. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Sioux City Sioux Gateway Airport.

There is 1 airport near Sioux City: Sioux City Sioux Gateway (SUX)

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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 51m 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 April 2025.
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 $358	Free Cancellation	Rating 7.4 8,696 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.