Cheap flights from Seattle to Sioux City from $455
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 1/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
SeattleSioux City
SEA Seattle/Tacoma Intl - SUX Sioux City Sioux Gateway
SEASUX
Seattle/Tacoma Intl
Wed 1/6
4:00 pm-11:44 pm
1 stop5h 44m
Sioux City Sioux Gateway
Sat 1/9
6:46 pm-9:49 am
1 stop17h 03m
SeattleSioux City
SEA Seattle/Tacoma Intl - SUX Sioux City Sioux Gateway
SEASUX
Seattle/Tacoma Intl
Wed 1/6
9:01 am-11:44 pm
2 stops12h 43m
Sioux City Sioux Gateway
Sat 1/9
6:46 pm-9:49 am
1 stop17h 03m
SeattleSioux City
SEA Seattle/Tacoma Intl - SUX Sioux City Sioux Gateway
SEASUX
Seattle/Tacoma Intl
Wed 1/6
9:01 am-11:44 pm
2 stops12h 43m
Sioux City Sioux Gateway
Sat 1/9
6:46 pm-12:54 pm
2 stops20h 08m
SeattleSioux City
SEA Seattle/Tacoma Intl - SUX Sioux City Sioux Gateway
SEASUX
Seattle/Tacoma Intl
Wed 1/6
4:00 pm-11:44 pm
1 stop5h 44m
Sioux City Sioux Gateway
Sat 1/9
5:04 am-11:58 am
1 stop8h 54m
SeattleSioux City
SEA Seattle/Tacoma Intl - SUX Sioux City Sioux Gateway
SEASUX
Seattle/Tacoma Intl
Wed 1/6
10:21 am-11:44 pm
2 stops11h 23m
Sioux City Sioux Gateway
Sat 1/9
5:04 am-11:58 am
1 stop8h 54m
SeattleSioux City
SEA Seattle/Tacoma Intl - SUX Sioux City Sioux Gateway
SEASUX
Seattle/Tacoma Intl
Wed 1/6
10:21 am-11:44 pm
2 stops11h 23m
Sioux City Sioux Gateway
Sat 1/9
5:04 am-6:12 pm
2 stops15h 08m
SeattleSioux City
SEA Seattle/Tacoma Intl - SUX Sioux City Sioux Gateway
SEASUX
Seattle/Tacoma Intl
Fri 10/23
3:55 pm-11:43 pm
1 stop5h 48m
Sioux City Sioux Gateway
Tue 10/27
6:00 am-12:19 pm
1 stop8h 19m
SeattleSioux City
SEA Seattle/Tacoma Intl - SUX Sioux City Sioux Gateway
SEASUX
Seattle/Tacoma Intl
Fri 10/23
2:27 pm-11:43 pm
1 stop7h 16m
Sioux City Sioux Gateway
Tue 10/27
6:00 am-8:47 pm
2 stops16h 47m
SeattleSioux City
SEA Seattle/Tacoma Intl - SUX Sioux City Sioux Gateway
SEASUX
Seattle/Tacoma Intl
Wed 1/6
4:00 pm-11:44 pm
1 stop5h 44m
Sioux City Sioux Gateway
Sat 1/9
5:04 am-11:58 am
1 stop8h 54m
SeattleSioux City
SEA Seattle/Tacoma Intl - SUX Sioux City Sioux Gateway
SEASUX
Seattle/Tacoma Intl
Wed 1/6
9:01 am-11:44 pm
2 stops12h 43m
Sioux City Sioux Gateway
Sat 1/9
5:04 am-11:58 am
1 stop8h 54m
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How to get the cheapest flight ticket from Seattle to Sioux City
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When to book flights from Seattle to Sioux City
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
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 44m 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 October 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 | ||
|---|---|---|---|---|---|
| PriceFrom $253 | Free Cancellation | Rating 7.4 10,316 reviews |
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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.
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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.