How long is the flight from Sioux City to Seattle?

Airlines like United Airlines fly from Sioux City to Seattle in about 8h 44m. The time it takes to get you to your destination can typically vary by up to . Sioux City and Seattle are separated by a distance of 1308 mi.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

What is the cheapest time of day to fly from SUX to SEA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sioux City to Seattle as you normally would.

Most accurate provider : When it comes to deals on Sioux City-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux City-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux City-Seattle flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Sioux City-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux City-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Sioux City to Seattle that include hotel bookings?

Yes. In addition to deals on Sioux City to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Sioux City to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux City to Seattle.

Can I find deals for business class flights from Sioux City to Seattle?

Yes. Cheapflights offers flight deals from Sioux City to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$189+ Cheap Flights from Sioux City to Seattle

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Cheap flight deals from Sioux City to Seattle

Cheapest

Best

Last-minute

One-way

Cheapest flights from Sioux City to Seattle
Explore the most affordable flight options available from Sioux City to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.

Tue 12/85:00 am -

1 stop8h 44m

Wed 12/161:16 pm -

2 stops8h 27m

Deal found 10/20

$374

Fri 11/66:45 pm -

1 stop6h 30m

Tue 11/103:49 pm -

1 stop5h 54m

Deal found 10/22

$404

Fri 12/186:46 pm -

1 stop6h 30m

Wed 12/307:00 am -

1 stop9h 11m

Deal found 10/22

$564

Tue 11/246:45 pm -

1 stop28h 34m

Sun 11/2910:00 pm -

1 stop23h 43m

Deal found 10/23

$882

Find flight deals from Sioux City to Seattle

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$404 (United Airlines)
One-way from	$189 (United Airlines)

Provider with most accurate pricing for Sioux City Sioux Gateway-Seattle/Tacoma Intl flight deals.

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Provider most trusted by Cheapflights users for Sioux City Sioux Gateway-Seattle/Tacoma Intl flights.

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From Sioux City Sioux Gateway to Seattle/Tacoma Intl

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One-way flight from Sioux City Sioux Gateway to Seattle/Tacoma Intl

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Fly to

Route

Depart

Return

Price

Cheapest round-trip

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Tue 12/8

5:00 am-6:28 pm

2 stops15h 28m

Seattle/Tacoma Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$195

Quickest round-trip

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Mon 12/7

5:00 am-4:22 pm

2 stops13h 22m

Seattle/Tacoma Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$220

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Tue 12/8

5:00 am-11:44 am

1 stop8h 44m

Seattle/Tacoma Intl

Wed 12/16

1:16 pm-11:43 pm

2 stops8h 27m

$374

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Wed 2/3

5:04 am-11:58 am

1 stop8h 54m

Seattle/Tacoma Intl

Sat 2/6

7:00 am-6:11 pm

1 stop9h 11m

$474

Sioux CitySeattle

SUX Sioux City Sioux Gateway - SEA Seattle/Tacoma Intl

SUXSEA

Sioux City Sioux Gateway

Sun 11/1

6:00 am-8:47 pm

2 stops16h 47m

Seattle/Tacoma Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Sorted by cheapest first

Compare providers for flights from Sioux City to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sioux City to Seattle in October.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Sioux City-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux City-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux City-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Sioux City-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux City-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sioux City to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Sioux City with our price prediction graph.

SUX-SEA

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

How long is the flight from Sioux City to Seattle?
Airlines like United Airlines fly from Sioux City to Seattle in about 8h 44m. The time it takes to get you to your destination can typically vary by up to . Sioux City and Seattle are separated by a distance of 1308 mi.
Can I find deals for flights from Sioux City to Seattle that include hotel bookings?
Yes. In addition to deals on Sioux City to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Sioux City to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux City to Seattle.
Can I find deals for business class flights from Sioux City to Seattle?
Yes. Cheapflights offers flight deals from Sioux City to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$189+ Cheap flights from Sioux City to Seattle (SUX - SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Sioux City to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Sioux City to Seattle

Cheapest flights from Sioux City to SeattleExplore the most affordable flight options available from Sioux City to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.

Explore the most affordable flight options available from Sioux City to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.

Best flights from Sioux City to SeattleDiscover carefully curated flight deals from Sioux City to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.

Discover carefully curated flight deals from Sioux City to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.

Last-minute flights from Sioux City to SeattleDiscover last-minute flight deals from Sioux City to Seattle. Data last updated October 25, 2026 and is based on user searches.

Discover last-minute flight deals from Sioux City to Seattle. Data last updated October 25, 2026 and is based on user searches.

One-way flights from Sioux City to SeattleSearch for one-way flight options from Sioux City to Seattle. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.

Search for one-way flight options from Sioux City to Seattle. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.

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Use the filters below to find and compare flights from Sioux City to Seattle that are best for you.

Compare providers for flights from Sioux City to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sioux City to Seattle in October.

Best time to book a flight from Sioux City to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Sioux City with our price prediction graph.

Related info for your journey

How long is the flight from Sioux City to Seattle?

Can I find deals for flights from Sioux City to Seattle that include hotel bookings?

How can I find direct flights from Sioux City to Seattle?

Can I find deals for business class flights from Sioux City to Seattle?

Traveling to a place near Seattle?

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Alternative routes for Sioux City to Seattle

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Complete your trip

Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Sioux City to Seattle by cabin class

Find flights from Sioux City to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Sioux City and Seattle flights

Browse other Sioux City and Seattle flight options. Last updated on October 25, 2026.

Other flights from Sioux City

Browse through other flights departing from Sioux City. Flights are based on user searches made on Cheapflights and were last updated on October 25, 2026.

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Cheapest flights from Sioux City to Seattle
Explore the most affordable flight options available from Sioux City to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.

Best flights from Sioux City to Seattle
Discover carefully curated flight deals from Sioux City to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.

Last-minute flights from Sioux City to Seattle
Discover last-minute flight deals from Sioux City to Seattle. Data last updated October 25, 2026 and is based on user searches.

One-way flights from Sioux City to Seattle
Search for one-way flight options from Sioux City to Seattle. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.