Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Washington to Sioux City from $139

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Sioux City departing on 3/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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.
Search flight deals

Find the cheapest flights from Washington to Sioux City

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:05 pm - 10:46 am
SEA
-
SUX
13h 41m
1 stop
United Airlines Logo
6:00 am - 9:46 am
SUX
-
SEA
5h 46m
1 stop
$421United Airlines
Fri, Apr 10 - Tue, Apr 14
United Airlines Logo
7:05 pm - 10:46 am
SEA
-
SUX
13h 41m
1 stop
United Airlines Logo
6:00 am - 4:04 pm
SUX
-
SEA
12h 04m
2 stops
$431United Airlines
Fri, Apr 10 - Tue, Apr 14
United Airlines Logo
7:00 am - 5:41 pm
SEA
-
SUX
8h 41m
1 stop
United Airlines Logo
6:46 pm - 10:59 pm
SUX
-
SEA
6h 13m
1 stop
$531United Airlines
Mon, Feb 16 - Fri, Feb 20
United Airlines Logo
4:00 pm - 11:42 pm
PDX
-
SUX
5h 42m
1 stop
United Airlines Logo
6:46 pm - 11:14 pm
SUX
-
PDX
6h 28m
1 stop
$534United Airlines
Sun, Feb 15 - Thu, Feb 19
United Airlines Logo
4:00 pm - 11:42 pm
PDX
-
SUX
5h 42m
1 stop
United Airlines Logo
1:00 pm - 11:14 pm
SUX
-
PDX
12h 14m
2 stops
$539United Airlines
Sun, Feb 15 - Thu, Feb 19
United Airlines Logo
7:05 pm - 5:56 pm
SEA
-
SUX
20h 51m
2 stops
United Airlines Logo
6:00 am - 2:46 pm
SUX
-
SEA
10h 46m
2 stops
$548United Airlines
Fri, Apr 10 - Tue, Apr 14
United Airlines Logo
5:00 am - 10:45 am
PSC
-
SUX
27h 45m
1 stop
United Airlines Logo
6:30 pm - 1:43 pm
SUX
-
PSC
21h 13m
1 stop
$562United Airlines
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
5:00 am - 10:45 am
PSC
-
SUX
27h 45m
1 stop
United Airlines Logo
6:10 am - 11:36 am
SUX
-
PSC
31h 26m
2 stops
$572United Airlines
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
12:44 pm - 10:45 am
PSC
-
SUX
20h 01m
1 stop
United Airlines Logo
6:46 pm - 8:50 pm
SUX
-
PSC
28h 04m
1 stop
$590United Airlines
Mon, Feb 16 - Thu, Feb 26
United Airlines Logo
3:05 pm - 11:42 pm
PSC
-
SUX
30h 37m
2 stops
United Airlines Logo
6:46 pm - 8:50 pm
SUX
-
PSC
28h 04m
1 stop
$617United Airlines
Mon, Feb 16 - Thu, Feb 26

United Airlines flights from State of Washington to Sioux City

Our best United Airlines deals on State of Washington to Sioux City flight tickets
United Airlines
Feb 28
SEA3:25 pmSeattle/Tacoma Intl
6h 17m
1 stop
SUX11:42 pmSioux City Sioux Gateway
Mar 1
SUX6:46 pmSioux City Sioux Gateway
6h 13m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
$332
United Airlines
Feb 28
SEA12:32 pmSeattle/Tacoma Intl
9h 10m
2 stops
SUX11:42 pmSioux City Sioux Gateway
Mar 1
SUX6:46 pmSioux City Sioux Gateway
6h 13m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
$342
United Airlines
Feb 28
SEA12:32 pmSeattle/Tacoma Intl
9h 10m
2 stops
SUX11:42 pmSioux City Sioux Gateway
Mar 1
SUX1:00 pmSioux City Sioux Gateway
33h 56m
2 stops
SEA8:56 pmSeattle/Tacoma Intl
$446

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Sioux City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 2, 2026.
Use the filters below to find and compare flights from Washington to Sioux City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Fri 4/10

7:05 pm-10:46 am

1 stop13h 41m

Sioux City Sioux Gateway

Tue 4/14

6:00 am-9:46 am

1 stop5h 46m

$421

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Fri 4/10

7:05 pm-10:46 am

1 stop13h 41m

Sioux City Sioux Gateway

Tue 4/14

6:00 am-4:04 pm

2 stops12h 04m

$431

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Mon 2/16

7:00 am-5:41 pm

1 stop8h 41m

Sioux City Sioux Gateway

Fri 2/20

6:46 pm-10:59 pm

1 stop6h 13m

$531

PortlandSioux City

PDX - SUX

PDXSUX

Portland

Sun 2/15

4:00 pm-11:42 pm

1 stop5h 42m

Sioux City Sioux Gateway

Thu 2/19

6:46 pm-11:14 pm

1 stop6h 28m

$534

PortlandSioux City

PDX - SUX

PDXSUX

Portland

Sun 2/15

4:00 pm-11:42 pm

1 stop5h 42m

Sioux City Sioux Gateway

Thu 2/19

1:00 pm-11:14 pm

2 stops12h 14m

$539

SeattleSioux City

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Fri 4/10

7:05 pm-5:56 pm

2 stops20h 51m

Sioux City Sioux Gateway

Tue 4/14

6:00 am-2:46 pm

2 stops10h 46m

$548

PascoSioux City

PSC - SUX

PSCSUX

Pasco Tri Cities

Mon 3/2

5:00 am-10:45 am

1 stop27h 45m

Sioux City Sioux Gateway

Mon 3/9

6:30 pm-1:43 pm

1 stop21h 13m

$562

PascoSioux City

PSC - SUX

PSCSUX

Pasco Tri Cities

Mon 3/2

5:00 am-10:45 am

1 stop27h 45m

Sioux City Sioux Gateway

Mon 3/9

6:10 am-11:36 am

2 stops31h 26m

$572

PascoSioux City

PSC - SUX

PSCSUX

Pasco Tri Cities

Mon 2/16

12:44 pm-10:45 am

1 stop20h 01m

Sioux City Sioux Gateway

Thu 2/26

6:46 pm-8:50 pm

1 stop28h 04m

$590

PascoSioux City

PSC - SUX

PSCSUX

Pasco Tri Cities

Mon 2/16

3:05 pm-11:42 pm

2 stops30h 37m

Sioux City Sioux Gateway

Thu 2/26

6:46 pm-8:50 pm

1 stop28h 04m

$617

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

See travel insights to Sioux City from

How to get the cheapest flight ticket from State of Washington 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 airline that flies from Washington to Sioux City Sioux Gateway?

United Airlines is the most popular carrier operating from Washington to Sioux City Sioux Gateway

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 State of Washington according to our data. Alaska Airlines is the first choice among our users, with 41% 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.

Cheap State of Washington to Sioux City flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Sioux City

Fastest flight time

5h 37m

Direct flights

None
The fastest flight from State of Washington to Sioux City takes 5h 37m
There are no direct flights from State of Washington to Sioux City. There are no popular flight routes from State of Washington to Sioux City.
Search flight deals

  • When did momondo last update prices for flights from Washington to Sioux City Sioux Gateway Airport?

    Prices for flights from Washington to Sioux City Sioux Gateway Airport are updated daily.

  • How many operators does momondo search for flights from Washington to Sioux City Sioux Gateway Airport?

  • How old do you have to be to fly from Washington to Sioux City Sioux Gateway Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington 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 required for your trip to Sioux City Sioux Gateway Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sioux City Sioux Gateway Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from State of Washington to Sioux City

Compare and see reviews for airlines that fly from State of Washington to Sioux City with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $253Free CancellationRating
7.4
9,229 reviews
Search United Airlines flights

Traveling to a place near Sioux City?

Book flights to Sioux City if you plan to visit one of these locations
Norfolk

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Sioux City?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Sioux City. momondo saves you time and could save you money on your trip.

Can I find flights from Washington to Sioux City with flexible booking policies on momondo?

momondo does allow users to show only those flights to Sioux City from Washington which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington to Sioux City?

Once you have performed a search for Washington to Sioux City flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington to Sioux City right now. Can momondo alert me if prices change?

Price alerts on flights to Sioux City from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Sioux City trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 3/4
Wed 3/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States