HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Seattle to Sioux City (SEA - SUX) from $361

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 10/29. 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.
SEA — SUX
Apr 29 — May 61
From?
To?
Mon 4/29
Mon 5/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from Seattle to Sioux City

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Sioux City (SUX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 24, 2024.

Round-trip from

$312
From Seattle/Tacoma Intl to Sioux City Sioux Gateway
Search Deals

What is the cheapest day to fly round-trip from Seattle to Sioux City?

Flights from Seattle to Sioux City are found to be more expensive on Tuesday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Sioux City.

When is the cheapest time to fly from Seattle to Sioux City (SEA - SUX)?

When flying from Seattle to Sioux City, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap United Airlines flights from Seattle to Sioux City

Explore cheap flight options specifically provided by United Airlines for the route between Seattle and Sioux City. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,086,534 searches. Data last updated April 24, 2024.
Tue 5/217:25 amSEA - SUX
2 stops8h 49mUnited Airlines
Tue 5/286:54 pmSUX - SEA
1 stop15h 08mUnited Airlines
Deal found 4/23$411
Tue 5/217:25 amSEA - SUX
3 stops13h 24mUnited Airlines
Tue 5/286:54 pmSUX - SEA
1 stop15h 08mUnited Airlines
Deal found 4/23$421
Tue 5/218:20 amSEA - SUX
1 stop7h 54mUnited Airlines
Tue 5/286:54 pmSUX - SEA
1 stop24h 43mUnited Airlines
Deal found 4/23$425
Tue 5/216:38 amSEA - SUX
2 stops9h 36mUnited Airlines
Tue 5/286:54 pmSUX - SEA
3 stops29h 21mUnited Airlines
Deal found 4/23$435
Tue 5/217:25 amSEA - SUX
3 stops13h 24mUnited Airlines
Tue 5/286:54 pmSUX - SEA
3 stops29h 21mUnited Airlines
Deal found 4/23$490
Thu 5/2312:30 pmSEA - SUX
1 stop8h 23mUnited Airlines
Thu 5/306:54 pmSUX - SEA
1 stop5h 56mUnited Airlines
Deal found 4/23$538
Wed 7/315:10 amSEA - SUX
1 stop11h 16mUnited Airlines
Wed 8/77:01 pmSUX - SEA
1 stop15h 01mUnited Airlines
Deal found 4/23$552
Wed 6/265:05 amSEA - SUX
1 stop11h 21mUnited Airlines
Sun 7/287:01 pmSUX - SEA
1 stop15h 01mUnited Airlines
Deal found 4/23$563
Tue 6/115:05 amSEA - SUX
1 stop11h 21mUnited Airlines
Wed 6/197:01 pmSUX - SEA
1 stop15h 01mUnited Airlines
Deal found 4/23$565

Cheap Seattle to Sioux City flights in April & May 2024

Find cheap flight options from Seattle to Sioux City specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,086,534 searches. Prices were last updated on April 24, 2024.
Tue 5/217:25 amSEA - SUX
2 stops8h 49mUnited Airlines
Tue 5/286:54 pmSUX - SEA
1 stop15h 08mUnited Airlines
Deal found 4/23$411
Tue 5/217:25 amSEA - SUX
3 stops13h 24mUnited Airlines
Tue 5/286:54 pmSUX - SEA
1 stop15h 08mUnited Airlines
Deal found 4/23$421
Tue 5/218:20 amSEA - SUX
1 stop7h 54mUnited Airlines
Tue 5/286:54 pmSUX - SEA
1 stop24h 43mUnited Airlines
Deal found 4/23$425
Tue 5/216:38 amSEA - SUX
2 stops9h 36mUnited Airlines
Tue 5/286:54 pmSUX - SEA
3 stops29h 21mUnited Airlines
Deal found 4/23$435
Tue 5/217:25 amSEA - SUX
3 stops13h 24mUnited Airlines
Tue 5/286:54 pmSUX - SEA
3 stops29h 21mUnited Airlines
Deal found 4/23$490
Thu 5/2312:30 pmSEA - SUX
1 stop8h 23mUnited Airlines
Thu 5/306:54 pmSUX - SEA
1 stop5h 56mUnited Airlines
Deal found 4/23$538
Tue 4/308:20 amSEA - SUX
1 stop24h 29mUnited Airlines
Fri 5/36:50 pmSUX - SEA
1 stop16h 57mUnited Airlines
Deal found 4/23$593
Thu 5/236:15 amSEA - SUX
2 stops10h 04mUnited Airlines
Thu 5/306:54 pmSUX - SEA
1 stop5h 56mUnited Airlines
Deal found 4/23$602
Tue 4/301:10 pmSEA - SUX
2 stops19h 39mUnited Airlines
Fri 5/36:50 pmSUX - SEA
1 stop16h 57mUnited Airlines
Deal found 4/23$603

Seattle to Sioux City 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Sioux City in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,086,534 searches. Data last updated April 24, 2024.
Tue 10/2911:05 amSEA - SUX
1 stop9h 40mUnited Airlines
Sat 11/27:45 amSUX - SEA
1 stop10h 13mUnited Airlines
Deal found 4/22$361
Tue 10/296:30 amSEA - SUX
2 stops14h 15mUnited Airlines
Sat 11/27:45 amSUX - SEA
1 stop10h 13mUnited Airlines
Deal found 4/22$366
Tue 10/296:30 amSEA - SUX
2 stops14h 15mUnited Airlines
Sat 11/27:45 amSUX - SEA
2 stops12h 24mUnited Airlines
Deal found 4/22$376
Tue 5/217:25 amSEA - SUX
2 stops8h 49mUnited Airlines
Tue 5/286:54 pmSUX - SEA
1 stop15h 08mUnited Airlines
Deal found 4/23$411
Tue 5/217:25 amSEA - SUX
3 stops13h 24mUnited Airlines
Tue 5/286:54 pmSUX - SEA
1 stop15h 08mUnited Airlines
Deal found 4/23$421
Tue 5/218:20 amSEA - SUX
1 stop7h 54mUnited Airlines
Tue 5/286:54 pmSUX - SEA
1 stop24h 43mUnited Airlines
Deal found 4/23$425
Tue 5/216:38 amSEA - SUX
2 stops9h 36mUnited Airlines
Tue 5/286:54 pmSUX - SEA
3 stops29h 21mUnited Airlines
Deal found 4/23$435
Tue 5/217:25 amSEA - SUX
3 stops13h 24mUnited Airlines
Tue 5/286:54 pmSUX - SEA
3 stops29h 21mUnited Airlines
Deal found 4/23$490
Thu 5/2312:30 pmSEA - SUX
1 stop8h 23mUnited Airlines
Thu 5/306:54 pmSUX - SEA
1 stop5h 56mUnited Airlines
Deal found 4/23$538

Seattle to Sioux City flights leaving soon

Find last-minute flight options from Seattle to Sioux City for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,086,534 searches. Data last updated April 24, 2024.
Tue 4/308:20 amSEA - SUX
1 stop24h 29mUnited Airlines
Fri 5/36:50 pmSUX - SEA
1 stop16h 57mUnited Airlines
Deal found 4/23$593
Tue 4/301:10 pmSEA - SUX
2 stops19h 39mUnited Airlines
Fri 5/36:50 pmSUX - SEA
1 stop16h 57mUnited Airlines
Deal found 4/23$603
Tue 4/301:10 pmSEA - SUX
2 stops19h 39mUnited Airlines
Fri 5/36:50 pmSUX - SEA
2 stops25h 43mUnited Airlines
Deal found 4/23$608
Tue 4/301:10 pmSEA - SUX
2 stops19h 39mUnited Airlines
Fri 5/36:50 pmSUX - SEA
2 stops25h 43mUnited Airlines
Deal found 4/23$629

Find flights from Seattle to Sioux City within your budget

Customize your flight search to find flights from Seattle 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, Cheapflights users made 3,086,534 searches. Data last updated April 24, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$411 - $565

Route

Depart

Return

Price

Seattle/Tacoma IntlSioux City Sioux Gateway

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Tue 5/21

2 stops8h 49m

Sioux City Sioux Gateway

Tue 5/28

1 stop15h 08m

$411

Seattle/Tacoma IntlSioux City Sioux Gateway

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Tue 5/21

3 stops13h 24m

Sioux City Sioux Gateway

Tue 5/28

1 stop15h 08m

$421

Seattle/Tacoma IntlSioux City Sioux Gateway

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Tue 5/21

1 stop7h 54m

Sioux City Sioux Gateway

Tue 5/28

1 stop24h 43m

$425

Seattle/Tacoma IntlSioux City Sioux Gateway

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Tue 5/21

2 stops9h 36m

Sioux City Sioux Gateway

Tue 5/28

3 stops29h 21m

$435

Seattle/Tacoma IntlSioux City Sioux Gateway

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Tue 5/21

3 stops13h 24m

Sioux City Sioux Gateway

Tue 5/28

3 stops29h 21m

$490

Seattle/Tacoma IntlSioux City Sioux Gateway

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Thu 5/23

1 stop8h 23m

Sioux City Sioux Gateway

Thu 5/30

1 stop5h 56m

$538

Seattle/Tacoma IntlSioux City Sioux Gateway

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Wed 7/31

1 stop11h 16m

Sioux City Sioux Gateway

Wed 8/7

1 stop15h 01m

$552

Seattle/Tacoma IntlSioux City Sioux Gateway

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Wed 6/26

1 stop11h 21m

Sioux City Sioux Gateway

Sun 7/28

1 stop15h 01m

$563

Seattle/Tacoma IntlSioux City Sioux Gateway

SEA - SUX

SEASUX

Seattle/Tacoma Intl

Tue 6/11

1 stop11h 21m

Sioux City Sioux Gateway

Wed 6/19

1 stop15h 01m

$565

Flights are sorted by cheapest first

Deals found on 4/23

When is the cheapest time to fly from Seattle to Sioux City?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Sioux City. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to Sioux City flight should consider departing on Thursday afternoons when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Sioux City by month

Plan your trip from Seattle to Sioux City by taking into account the cheapest months to travel. The average price of a one-way flight from Seattle to Sioux City is currently $0 while a round-trip flight costs $489. Price data was last updated on April 21, 2024.

Currently, February is the cheapest month in which you can book a flight from Seattle to Sioux City (average of $312). Flying from Seattle to Sioux City in July is currently the most expensive (average of $543). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$352

February

$312

March

$446

April

$388

May

$469

June

$519

July

$543

August

$415

September

$344

October

$457

November

$375

December

$416

Temperature and rainfall in Sioux City by month

Plan your trip to Sioux City by taking into account the average temperature and rainfall totals by month.

SUX

Temperature

21.2 - 75.2 °F

Reviews of airlines servicing Sioux City

Get insights into the airlines that provide service to Sioux City. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sioux City. Reviews last updated April 24, 2024.
United Airlines
7.4
Good
11,272 reviews
Check prices

Food

6.7

Crew

8.1

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.2

Reviews

1 / 10

There were a lot of delays. Not sure if they could be helped, but it made me super nervous about catching my already tight connection. The connection was held for me, but I had to really hurry to make it.

United Airlines
7.4
Good
11,272 reviews
United Airlines
7.4
Good
11,272 reviews
Check prices

Food

6.7

Crew

8.1

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.2

Reviews

1 / 10

There were a lot of delays. Not sure if they could be helped, but it made me super nervous about catching my already tight connection. The connection was held for me, but I had to really hurry to make it.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Sioux City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Seattle to Sioux City for under $500 on Cheapflights?

    Yes, there are multiple flights from Seattle to Sioux City for under $500. The cheapest flight booked recently is on United Airlines for just $411, but on average you can expect to pay $564.

  • Are there last-minute flights available from Seattle to Sioux City for under $600?

    There are currently 4+ open flights from Seattle to Sioux City within the next 7 days for less than $600.

  • What is the cheapest airline to fly from Seattle to Sioux City round-trip?

    United Airlines, at $411, was found to be the cheapest airline from Seattle to Sioux City..

  • What does SEA to SUX mean?

    SEA and SUX are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. SEA to SUX refers to a flight route from Seattle/Tacoma Intl Airport to Sioux City Sioux Gateway Airport.

  • Can I find deals for flights from Seattle to Sioux City that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Sioux City flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Sioux City with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Sioux City flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

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

  • Can I find deals for flights from Seattle to Sioux City that allow pets onboard?

    Many airlines flying from Seattle to Sioux City offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Sioux City?

    Yes, you can often find last-minute deals on Seattle to Sioux City flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Sioux City flight deals updated?

    The Seattle to Sioux City flight deals you see on this page were last updated on 4/23.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Sioux City
See prices for flight routes from nearby airports that may be better suited for you.

Seattle to Des Moines flights
Seattle to Cedar Rapids flights
Pasco to Des Moines flights
Spokane to Cedar Rapids flights
Spokane to Des Moines flights
Seattle to Waterloo flights
Bellingham to Des Moines flights
Spokane to Sioux City flights
Spokane to Dubuque flights
Pasco to Sioux City flights
Seattle to Dubuque flights

Top airline flying from Seattle to Sioux City

Discover the top airline that operate flights from Seattle to Sioux City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,086,534 searches. Data last updated April 24, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$295Average$581FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Baltimore to Dallas flights
Los Angeles to Detroit flights
New York to Los Angeles flights
Washington, D.C. to Atlanta flights
Chicago to Rome flights
New York to Montreal flights
Phoenix to Cancún flights
Dallas to Philadelphia flights
San Francisco to Manila flights
Austin to Seattle flights
San Francisco to Boston flights
Seattle to El Salvador flights

Search flights from Seattle to Sioux City by cabin class

Find flights from Seattle to Sioux City, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Bodø
Flights to Bar Harbor
Flights to Bastia Poretta
Flights to Dharamshala Kangra
Flights to Biarritz Parme
Flights to Menorca/Mahon
Flights to Milas–Bodrum
Flights to Dipolog
Flights to Kagoshima
Flights to Edremit/Korfez
Flights to Bourgas
Flights to Ordu/Giresun
Flights to Chios
Flights to Argostoli Cephalonia
Flights to Barrow Wiley Post/W.Rogers
Flights to Kristiansand Kjevik
Flights to Zakynthos Dionsios Salomos
Flights to Batumi
Flights to Guilin
Flights to Pau Pyrénées
Flights to Fez Sais
Flights to Kos
Flights to Mytilene
Flights to Norwich Arpt

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Sioux City?

Cheapflights makes it easy to find Seattle to Sioux City flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Sioux City?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Sioux City.

Can Cheapflights find flights from Seattle to Sioux City with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Sioux City flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Seattle to Sioux City become cheaper?

Yes! Start tracking prices for Seattle to Sioux City flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines