Cheap flights from Seattle to Sioux City from $291
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Sioux City departing on 6/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
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.Find the cheapest flights from Seattle to Sioux City
Cheap round-trip flights
Cheap one-way flights
United Airlines flights from Seattle to Sioux City
Our best United Airlines deals on Seattle to Sioux City flight tickets
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 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.
What is the cheapest time of day to depart on your flight to Sioux City?
The cheapest time of day to fly to Sioux City is in the morning when flights can be purchased for as low as $494. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $494 on average. Flights to Sioux City from Seattle in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Sioux City Sioux Gateway?
United Airlines is the most popular carrier operating from Seattle/Tacoma Intl to Sioux City Sioux Gateway
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 47% 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
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
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 17m 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 | ||
|---|---|---|---|---|---|
| PriceFrom $358 | Free Cancellation | Rating 7.4 8,685 reviews |
Traveling to a place near Sioux City?
Book flights to Sioux City if you plan to visit one of these locationsWhy 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.