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SUX - SEA

$232 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 10/12. 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
0 bags
Tue 7/2
Tue 7/9

Search 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
In the last 7 days travelers have searched 42,335,261 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
3:31 pm - 9:15 pmSUX-SEA
7h 44m1 stop
5:07 am - 2:54 pmSEA-SUX
7h 47m1 stop
$232United Airlines
Find Deal
Sat, Oct 12 - Tue, Oct 29
3:31 pm - 9:15 pmSUX-SEA
7h 44m1 stop
6:39 am - 10:45 pmSEA-SUX
14h 06m2 stops
$262United Airlines
Find Deal
Sat, Oct 12 - Tue, Oct 29
3:31 pm - 10:47 pmSUX-SEA
9h 16m2 stops
6:39 am - 10:45 pmSEA-SUX
14h 06m2 stops
$376United Airlines
Find Deal
Sat, Oct 12 - Tue, Oct 29
7:45 am - 10:00 pmSUX-SEA
16h 15m3 stops
9:35 am - 10:45 pmSEA-SUX
11h 10m2 stops
$408United Airlines
Find Deal
Sat, Oct 12 - Tue, Oct 29

Flights from Sioux City to Seattle - Travel Insights & Trends

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 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 Mondays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from Seattle, Monday is the cheapest day to fly and Wednesday is the most expensive.

Good to know

Cheapest flight

$232
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 $278 for a one-way ticket and $232 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.

See more FAQs

Top airline flying from Sioux City to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Sioux City to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sioux City to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10755 reviews
7.2Comfort
7.7Boarding
7.1Entertainment
8.1Crew
6.7Food
Airline reviews

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

4.0 OkayRoger, Jun 2024SFO - BUR
Read more about United Airlines reviews

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Not worth the price of premium class ticket paid, felt more like steerage.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

I had a great flight. Everything went smoothly and the flight arrived early.

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

On time take off…US cabins look tired and need of refresh!

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

Book cheap flights from Sioux City to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Sioux City to Seattle found on KAYAK in the last 72 hours.
6/28Fri
1 stopUnited Airlines
15h 01mSUX-SEA
$278
6/7Fri
1 stopUnited Airlines
14h 56mSUX-SEA
$321
6/7Fri
2 stopsUnited Airlines
29h 10mSUX-SEA
$426
6/28Fri
2 stopsUnited Airlines
27h 47mSUX-SEA
$441
6/7Fri
3 stopsUnited Airlines
29h 10mSUX-SEA
$510
6/28Fri
3 stopsUnited Airlines
29h 28mSUX-SEA
$563

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Sioux City - Seattle Flights

Departure:

Sioux City (SUX)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Sioux City

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