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Sioux City

$344+ Cheap flights from Boston to Sioux City (BOS - SUX)

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SUX
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from Boston to Sioux City

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 August 18, 2025.

Round-trip from

$344
(United Airlines)
From Boston Logan Intl to Sioux City Sioux Gateway
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Find flight deals from Boston to Sioux City

Cheapest flights from Boston to Sioux City
Explore the most affordable flight options available from Boston to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:16 pmBOS - SUX
1 stop5h 41mUnited Airlines
Mon 9/157:49 amSUX - BOS
2 stops10h 06mUnited Airlines
Deal found 8/16$344
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:27 pmBOS - SUX
1 stop27h 30mUnited Airlines
Mon 9/227:49 amSUX - BOS
2 stops10h 06mUnited Airlines
Deal found 8/16$417
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/24:27 pmBOS - SUX
1 stop7h 30mUnited Airlines
Fri 9/57:49 amSUX - BOS
1 stop25h 07mUnited Airlines
Deal found 8/16$453
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/235:30 amBOS - SUX
2 stops13h 43mUnited Airlines
Tue 8/267:49 amSUX - BOS
1 stop5h 51mUnited Airlines
Deal found 8/15$454

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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 2,558,603 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Boston to Sioux City that are best for you.

Fly from

Boston

Fly to

Sioux City

Route

Depart

Return

Price

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Fri 9/12

6:16 pm-10:57 pm

1 stop5h 41m

Sioux City Sioux Gateway

Mon 9/15

7:49 am-6:55 pm

2 stops10h 06m

$344

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Mon 9/15

8:27 pm-10:57 pm

1 stop27h 30m

Sioux City Sioux Gateway

Mon 9/22

7:49 am-6:55 pm

2 stops10h 06m

$417

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Tue 9/2

4:27 pm-10:57 pm

1 stop7h 30m

Sioux City Sioux Gateway

Fri 9/5

7:49 am-9:56 am

1 stop25h 07m

$453

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Sat 8/23

5:30 am-6:13 pm

2 stops13h 43m

Sioux City Sioux Gateway

Tue 8/26

7:49 am-2:40 pm

1 stop5h 51m

$454

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Thu 10/9

4:25 pm-11:00 pm

1 stop7h 35m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Best time to book a flight from Boston to Sioux City

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

Cheapflights Insights

Everything you need to know about your flight from Boston to Sioux City

What is the cheapest month to book a flight from Boston to Sioux City?

Currently, October is the cheapest month in which you can book a flight from Boston to Sioux City (average of $318). Flying from Boston to Sioux City in March is currently the most expensive (average of $446). 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.

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 August 18, 2025.
Get a feel of what it's like to fly with United Airlines from Boston to Sioux City by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,925 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,925 reviews
United Airlines
7.4
Good
8,925 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

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

  • How long is the flight from Boston to Sioux City?

    There are many flights that can get you from Boston to Sioux City in 5h 41m. Fly via United Airlines to get the fastest option. Airlines will cover a distance of 1289 mi.

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

    Cheapflights users have booked flights from Boston to Sioux City round-trip from $368.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston 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.

  • What is the cheapest month to book a flight from Boston to Sioux City?

    Currently, October is the cheapest month in which you can book a flight from Boston to Sioux City (average of $318). Flying from Boston to Sioux City in March is currently the most expensive (average of $446). 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.

See more FAQs

Traveling to a place near Sioux City?

Book flights to Sioux City if you plan to visit one of these locations
Norfolk

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Top airline flying from Boston to Sioux City

Discover the top airline that operate flights from Boston 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 2,558,603 searches. Data last updated August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$368Average$528FlexibilityNo cancel feeOn-time69%

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