Cheap flights from Seattle to Sioux City (SEA - SUX)

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How to find the cheapest flight from
Seattle (SEA) to Sioux City (SUX)

All the information you need to plan the best SEA to SUX flight in 2022: compare Seattle to Sioux City flight prices with the expected peak season, weather and rainfall in Sioux City.
What is the cheapest day to fly round-trip from Seattle to Sioux City?

Flights from Seattle to Sioux City are found to be more expensive on Tuesday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Sioux City.

When is the cheapest time to fly from Seattle to Sioux City (SEA - SUX)?

It’s typically best to fly out from Seattle to Sioux City in the evening. Doing so could potentially save you 48% on the flight price compared to flying at noon, which is usually more expensive.

Cheap flights from Seattle to Sioux City in May, June 2022

The best prices found for SEA to SUX flights for May, June
17 Jun - 24 Jun
$1,016pp
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
SUX
Sioux City Sioux Gateway
SUX
Sioux City Sioux Gateway
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
17 Jun - 24 Jun
$1,137pp
SEA
Seattle/Tacoma Intl
United Airlines
   
2 STOPS
SUX
Sioux City Sioux Gateway
SUX
Sioux City Sioux Gateway
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
17 Jun - 24 Jun
$1,255pp
SEA
Seattle/Tacoma Intl
United Airlines
     
3 STOPS
SUX
Sioux City Sioux Gateway
SUX
Sioux City Sioux Gateway
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Sioux City 2022 flight deals

Cheap flights to Sioux City from Seattle found for this year
17 Jun - 24 Jun
$1,016pp
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
SUX
Sioux City Sioux Gateway
SUX
Sioux City Sioux Gateway
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
23 Jul - 31 Jul
$1,067pp
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
SUX
Sioux City Sioux Gateway
SUX
Sioux City Sioux Gateway
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
17 Jun - 24 Jun
$1,137pp
SEA
Seattle/Tacoma Intl
United Airlines
   
2 STOPS
SUX
Sioux City Sioux Gateway
SUX
Sioux City Sioux Gateway
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Sioux Gateway from Seattle

The cheapest one-way flights from Seattle to Sioux City
1:00 am - 7:00 pm
United Airlines
1 Stop
16h 00m
SEA - SUX
United Airlines
$409
United
9:55 am - 7:05 pm
United Airlines
1 Stop
7h 10m
SEA - SUX
United Airlines
$769
United
2:55 pm - 7:00 pm
United Airlines
2 Stops
50h 05m
SEA - SUX
United Airlines
$468
United

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Sioux City</span> flights.

Flight FAQs

From Seattle to Sioux City

Which airlines flying from Seattle/Tacoma Intl to Sioux City Sioux Gateway have flexible cancellations due to COVID-19?

Some of our airline partners flying from Seattle/Tacoma Intl to Sioux City Sioux Gateway have new flexible policies in place due to COVID-19. American Airlines and United Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from Seattle to Sioux City for under $1,100 on Cheapflights?

Yes, there are multiple flights from Seattle to Sioux City for under $1,100. The cheapest flight booked recently is on United Airlines for just $1,016, but on average you can expect to pay $1,232.

What is the cheapest airline to fly from Seattle to Sioux City round-trip?

United Airlines, at $1,016, was found to be the cheapest airline from Seattle to Sioux City..

What are the cheapest flights from Seattle to Sioux City?

Looking for the cheapest flight from Seattle to Sioux City? While on average our users pay $560, our data indicates the cheapest price to be $424. The most popular route (Seattle/Tacoma Intl - Sioux City Sioux Gateway), is priced around $1,016.

COVID Restrictions

View COVID Travel Restrictions for Sioux City, IA

Do I need a COVID test to fly to Sioux City from Seattle?

Information is based on travel restrictions for travel to Sioux City Sioux Gateway within the United States

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Sioux City Sioux Gateway.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Sioux City Sioux Gateway.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Sioux City Sioux Gateway.

Do I need a test to fly back to Seattle from Sioux City?

Returning to Seattle/Tacoma Intl from Sioux City Sioux Gateway

COVID-19 testing requirements
Visitors from Sioux City Sioux Gateway must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Sioux City Sioux Gateway are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Sioux City, IA

Alternative routes for Seattle to Sioux City

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Sioux City

Things to know before you go - useful duration and weather info for your trip from Seattle to Sioux City.
Average temperature for May in Sioux City
75.2 °F
Avg rainfall for May in Sioux City
3.9 ″

Airports servicing Seattle

Airports servicing Sioux City

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