SUX - SEA

$304 Find Cheap Flights from Sioux City to Seattle

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sioux City to Seattle departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux City to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux City to Seattle, as well as popular online travel agencies
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sioux City to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sioux City to Seattle

Wed, Oct 1 - Sat, Oct 4
United Airlines Logo
6:51 pm - 11:29 pmSUX-SEA
6h 38m1 stop
United Airlines Logo
1:57 pm - 11:00 pmSEA-SUX
7h 03m1 stop
$304United Airlines
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Wed, Oct 1 - Sat, Oct 4
United Airlines Logo
6:51 pm - 11:29 pmSUX-SEA
6h 38m1 stop
United Airlines Logo
8:30 am - 11:00 pmSEA-SUX
12h 30m2 stops
$314United Airlines
Find Deal
Thu, Oct 2 - Mon, Oct 6
United Airlines Logo
6:51 pm - 11:29 pmSUX-SEA
6h 38m1 stop
United Airlines Logo
1:57 pm - 11:00 pmSEA-SUX
7h 03m1 stop
$332United Airlines
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Tue, Mar 3 - Sat, Mar 7
United Airlines Logo
6:00 am - 10:04 amSUX-SEA
6h 04m1 stop
United Airlines Logo
6:31 am - 5:32 pmSEA-SUX
9h 01m1 stop
$334United Airlines
Find Deal
Thu, Oct 2 - Mon, Oct 6
United Airlines Logo
6:51 pm - 11:29 pmSUX-SEA
6h 38m1 stop
United Airlines Logo
6:35 am - 6:14 pmSEA-SUX
9h 39m2 stops
$342United Airlines
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Tue, Mar 3 - Sat, Mar 7
United Airlines Logo
12:45 pm - 9:17 pmSUX-SEA
10h 32m2 stops
United Airlines Logo
6:31 am - 5:32 pmSEA-SUX
9h 01m1 stop
$344United Airlines
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Wed, Oct 1 - Sat, Oct 4
United Airlines Logo
7:50 am - 9:15 pmSUX-SEA
15h 25m3 stops
United Airlines Logo
1:57 pm - 11:00 pmSEA-SUX
7h 03m1 stop
$399United Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 4
United Airlines Logo
7:50 am - 9:15 pmSUX-SEA
15h 25m3 stops
United Airlines Logo
6:35 am - 11:00 pmSEA-SUX
14h 25m2 stops
$404United Airlines
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Sat, Oct 18 - Sat, Oct 25
United Airlines Logo
6:51 pm - 9:59 amSUX-SEA
17h 08m1 stop
United Airlines Logo
8:30 am - 6:14 pmSEA-SUX
7h 44m1 stop
$425United Airlines
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Tue, Mar 3 - Sat, Mar 7
United Airlines Logo
6:00 am - 5:25 pmSUX-SEA
13h 25m2 stops
United Airlines Logo
5:07 am - 5:32 pmSEA-SUX
10h 25m2 stops
$429United Airlines
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Everything you should know

Cheapest round-trip
$304
United Airlines
Wed 10/1Sat 10/4
SUX - SEA • 1 stop
Cheapest one-way
$345
United Airlines
Sun 10/5
SUX - SEA • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Booking Insights

KAYAK's insights & trends for Sioux City to Seattle flights

Get data-powered insights and trends into flights from Sioux City to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Sioux City to Seattle?

The average price of all round-trip flights from Sioux City to Seattle clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Sioux City to Seattle, look for departures on Tuesdays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from Seattle, Thursday is the cheapest day to fly and Wednesday is the most expensive.

Find deals

Good to know

Cheapest flight$304
Flight from Sioux City to Seattle

When to book flights from Sioux City to Seattle

Are your dates flexible? Find out the best times to travel from Sioux City to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Sioux City to Seattle

  • What is the cheapest flight from Sioux City to Seattle?

    In the last 3 days, the lowest price for a flight from Sioux City to Seattle was $345 for a one-way ticket and $304 for a round-trip.

  • Do I need a passport to fly between Sioux City and Seattle?

    No

  • Which airports will I be using when flying from Sioux City to Seattle?

    Sioux City and Seattle are both served by 1 main airport. You will leave Sioux City from Sioux City Sioux Gateway and will be arriving at Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from Sioux City to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sioux City to Seattle?

    Star Alliance is the only airline alliance operating flights between Sioux City and Seattle.

  • How does KAYAK find such low prices on flights from Sioux City to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sioux City to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sioux City to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Sioux City is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sioux City to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Sioux City with another airline. Booking your flights between Sioux City and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sioux City to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Sioux City up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Sioux City to Seattle

Information on your arrival and departure airports

Sioux City (SUX)
Seattle (SEA)

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