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

SEA — SUX
Feb 1 — Feb 81

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 Thursday. 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.

What is the cheapest month to fly from Seattle to Sioux City?

May can be a great time to fly to Sioux City from Seattle with a flight ticket averaging about $508. Cheapflights users have found deals in the month of May for as cheap as $246. The most expensive prices can be found in the month of September.

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 afternoon. Doing so could potentially save you 44% on the flight price compared to flying at noon, which is usually more expensive.

Seattle to Sioux City 2023 flight deals

Cheap flights to Sioux City from Seattle found for this year
Mar 14 - Mar 22
SEA

Seattle/Tacoma Intl

SUX

Sioux City Sioux Gateway

1 stop

10h 34m
SUX

Sioux City Sioux Gateway

SEA

Seattle/Tacoma Intl

1 stop

7h 37m
$392

United Airlines

Pick Dates

Deal found 1/26

Mar 14 - Mar 22
SEA

Seattle/Tacoma Intl

SUX

Sioux City Sioux Gateway

3 stops

20h 53m
SUX

Sioux City Sioux Gateway

SEA

Seattle/Tacoma Intl

1 stop

7h 37m
$448

United Airlines

Pick Dates

Deal found 1/26

Mar 14 - Mar 22
SEA

Seattle/Tacoma Intl

SUX

Sioux City Sioux Gateway

2 stops

23h 22m
SUX

Sioux City Sioux Gateway

SEA

Seattle/Tacoma Intl

1 stop

7h 37m
$451

United Airlines

Pick Dates

Deal found 1/26

Cheap United Airlines flights from Seattle to Sioux City

Mar 14 - Mar 22
SEA

Seattle/Tacoma Intl

SUX

Sioux City Sioux Gateway

1 stop

10h 34m
SUX

Sioux City Sioux Gateway

SEA

Seattle/Tacoma Intl

1 stop

7h 37m
$392

United Airlines

Pick Dates

Deal found 1/26

Mar 14 - Mar 22
SEA

Seattle/Tacoma Intl

SUX

Sioux City Sioux Gateway

3 stops

20h 53m
SUX

Sioux City Sioux Gateway

SEA

Seattle/Tacoma Intl

1 stop

7h 37m
$448

United Airlines

Pick Dates

Deal found 1/26

Mar 14 - Mar 22
SEA

Seattle/Tacoma Intl

SUX

Sioux City Sioux Gateway

2 stops

23h 22m
SUX

Sioux City Sioux Gateway

SEA

Seattle/Tacoma Intl

1 stop

7h 37m
$451

United Airlines

Pick Dates

Deal found 1/26

Reviews of Airlines Servicing Sioux City

United Airlines
7.6
Good
1,147 reviews

Comfort

7.4

Crew

8.2

Overall

7.6

Entertainment

7.1

Boarding

7.9

Food

6.8

Reviews

1 / 10

Connecting flight was cancelled so I did not fly on this flight. There's no n/a option though

United Airlines
7.6
Good
1,147 reviews
United Airlines
7.6
Good
1,147 reviews

Comfort

7.4

Crew

8.2

Overall

7.6

Entertainment

7.1

Boarding

7.9

Food

6.8

Reviews

1 / 10

Connecting flight was cancelled so I did not fly on this flight. There's no n/a option though

Related info for your journey

Useful info, stats and facts about Seattle to Sioux City flights.

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 $400 on Cheapflights?

Yes, there are multiple flights from Seattle to Sioux City for under $400. The cheapest flight booked recently is on United Airlines for just $392, but on average you can expect to pay $591.

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

United Airlines, at $392, was found to be the cheapest airline from Seattle to Sioux City.. Users have found that United Airlines is 22% cheaper than the other options available to this destination.

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 $415, our data indicates the cheapest price to be $303. The most popular route (Seattle/Tacoma Intl - Sioux City Sioux Gateway), is priced around $392.

Alternative routes for Seattle to Sioux City

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

Top 2 airlines flying from Seattle to Sioux City

The chart below displays the airlines Cheapflights users traveling from Seattle to Sioux City choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
American AirlinesCheapest$248Average$428FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
United AirlinesCheapest$324Average$497FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
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