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Cheap flights from Sioux City to Washington from $158

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sioux City to Washington departing on 2/11. 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:55 pm - 7:00 pm
SUX
-
SEA
8h 05m
1 stop
United Airlines Logo
3:48 pm - 11:44 pm
SEA
-
SUX
5h 56m
1 stop
$285United Airlines
Thu, Apr 23 - Mon, Apr 27
United Airlines Logo
12:45 pm - 9:22 pm
SUX
-
GEG
10h 37m
2 stops
United Airlines Logo
1:48 pm - 11:47 pm
GEG
-
SUX
7h 59m
1 stop
$320United Airlines
Wed, Jan 28 - Sun, Feb 1
United Airlines Logo
6:00 am - 9:42 am
SUX
-
PDX
5h 42m
1 stop
United Airlines Logo
3:52 pm - 11:41 pm
PDX
-
SUX
5h 49m
1 stop
$323United Airlines
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
12:45 pm - 6:14 pm
SUX
-
SEA
7h 29m
1 stop
United Airlines Logo
7:00 am - 5:28 pm
SEA
-
SUX
8h 28m
1 stop
$324United Airlines
Tue, Jan 27 - Sat, Jan 31
United Airlines Logo
12:45 pm - 12:59 am
SUX
-
SEA
14h 14m
2 stops
United Airlines Logo
7:00 am - 5:28 pm
SEA
-
SUX
8h 28m
1 stop
$329United Airlines
Tue, Jan 27 - Sat, Jan 31
United Airlines Logo
6:10 am - 9:54 am
SUX
-
PDX
5h 44m
1 stop
United Airlines Logo
3:52 pm - 11:41 pm
PDX
-
SUX
5h 49m
1 stop
$331United Airlines
Fri, Mar 20 - Wed, Mar 25
United Airlines Logo
6:00 am - 9:49 am
SUX
-
SEA
5h 49m
1 stop
United Airlines Logo
7:00 am - 5:41 pm
SEA
-
SUX
8h 41m
1 stop
$332United Airlines
Wed, Mar 4 - Sat, Mar 7
United Airlines Logo
1:00 pm - 11:30 pm
SUX
-
SEA
12h 30m
2 stops
United Airlines Logo
3:40 pm - 11:41 pm
SEA
-
SUX
6h 01m
1 stop
$337United Airlines
Wed, Mar 4 - Sat, Mar 7
United Airlines Logo
12:45 pm - 12:59 am
SUX
-
SEA
14h 14m
2 stops
United Airlines Logo
5:00 am - 5:28 pm
SEA
-
SUX
10h 28m
2 stops
$339United Airlines
Tue, Jan 27 - Sat, Jan 31
United Airlines Logo
1:00 pm - 10:59 pm
SUX
-
PDX
11h 59m
2 stops
United Airlines Logo
3:52 pm - 11:41 pm
PDX
-
SUX
5h 49m
1 stop
$343United Airlines
Mon, Mar 2 - Mon, Mar 9

United Airlines flights from Sioux City to State of Washington

Our best United Airlines deals on Sioux City to State of Washington flight tickets
United Airlines
Apr 23
SUX12:55 pmSioux City Sioux Gateway
8h 05m
1 stop
SEA7:00 pmSeattle/Tacoma Intl
Apr 27
SEA3:48 pmSeattle/Tacoma Intl
5h 56m
1 stop
SUX11:44 pmSioux City Sioux Gateway
$285
United Airlines
Jan 28
SUX12:45 pmSioux City Sioux Gateway
10h 37m
2 stops
GEG9:22 pmSpokane
Feb 1
GEG1:48 pmSpokane
7h 59m
1 stop
SUX11:47 pmSioux City Sioux Gateway
$320
United Airlines
Mar 2
SUX6:00 amSioux City Sioux Gateway
5h 42m
1 stop
PDX9:42 amPortland
Mar 9
PDX3:52 pmPortland
5h 49m
1 stop
SUX11:41 pmSioux City Sioux Gateway
$323

momondo Fare Finder

 
Customize your flight search to find flights from Sioux City to State of Washington 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 January 14, 2026.
Use the filters below to find and compare flights from Sioux City to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Thu 4/23

12:55 pm-7:00 pm

1 stop8h 05m

Seattle/Tacoma Intl

Mon 4/27

3:48 pm-11:44 pm

1 stop5h 56m

$285

Sioux CitySpokane

SUX - GEG

SUXGEG

Sioux City Sioux Gateway

Wed 1/28

12:45 pm-9:22 pm

2 stops10h 37m

Spokane

Sun 2/1

1:48 pm-11:47 pm

1 stop7h 59m

$320

Sioux CityPortland

SUX - PDX

SUXPDX

Sioux City Sioux Gateway

Mon 3/2

6:00 am-9:42 am

1 stop5h 42m

Portland

Mon 3/9

3:52 pm-11:41 pm

1 stop5h 49m

$323

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Tue 1/27

12:45 pm-6:14 pm

1 stop7h 29m

Seattle/Tacoma Intl

Sat 1/31

7:00 am-5:28 pm

1 stop8h 28m

$324

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Tue 1/27

12:45 pm-12:59 am

2 stops14h 14m

Seattle/Tacoma Intl

Sat 1/31

7:00 am-5:28 pm

1 stop8h 28m

$329

Sioux CityPortland

SUX - PDX

SUXPDX

Sioux City Sioux Gateway

Fri 3/20

6:10 am-9:54 am

1 stop5h 44m

Portland

Wed 3/25

3:52 pm-11:41 pm

1 stop5h 49m

$331

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Wed 3/4

6:00 am-9:49 am

1 stop5h 49m

Seattle/Tacoma Intl

Sat 3/7

7:00 am-5:41 pm

1 stop8h 41m

$332

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Wed 3/4

1:00 pm-11:30 pm

2 stops12h 30m

Seattle/Tacoma Intl

Sat 3/7

3:40 pm-11:41 pm

1 stop6h 01m

$337

Sioux CitySeattle

SUX - SEA

SUXSEA

Sioux City Sioux Gateway

Tue 1/27

12:45 pm-12:59 am

2 stops14h 14m

Seattle/Tacoma Intl

Sat 1/31

5:00 am-5:28 pm

2 stops10h 28m

$339

Sioux CityPortland

SUX - PDX

SUXPDX

Sioux City Sioux Gateway

Mon 3/2

1:00 pm-10:59 pm

2 stops11h 59m

Portland

Mon 3/9

3:52 pm-11:41 pm

1 stop5h 49m

$343

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Washington from

How to get the cheapest flight ticket from Sioux City to State of Washington

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

Can stopping save me money on Sioux City to State of Washington flights?

You could potentially save up to 5% on your flight if you consider stops on a Sioux City to State of Washington flight.

Cheap Sioux City to State of Washington flight deals and tips

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

Fastest flight time

5h 42m

Direct flights

None
The fastest flight from Sioux City to State of Washington takes 5h 42m
There are no direct flights from Sioux City to State of Washington. There are no popular flight routes from Sioux City to State of Washington.
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  • When did momondo last update prices for flights from Sioux City Sioux Gateway Airport to Washington?

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux City Sioux Gateway Airport to Washington.

  • What documentation or ID do you need to fly to Washington?

    The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

It is quick and easy to find Sioux City to Washington flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington that suits you.

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

Yes. All flights to Washington from Sioux City on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Washington from Sioux City. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Sioux City to Washington flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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