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Sioux City

$325+ Cheap flights from Boston to Sioux City (BOS - SUX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SUX
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap 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 January 20, 2026.

This United Airlines deal was found by Cheapflights users on 1/19. 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 2/289:45 am
BOS
-
SUX
1 stop8h 56m
United Airlines
Wed 3/41:00 pm
SUX
-
BOS
1 stop7h 48m
United Airlines
Deal found 1/19$354
This United Airlines deal was found by Cheapflights users on 1/18. 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 1/243:15 pm
BOS
-
SUX
1 stop9h 32m
United Airlines
Sun 1/256:00 am
SUX
-
BOS
1 stop7h 02m
United Airlines
Deal found 1/18$424
This United Airlines deal was found by Cheapflights users on 1/17. 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 9/48:20 pm
BOS
-
SUX
1 stop22h 12m
United Airlines
Mon 9/712:45 pm
SUX
-
BOS
1 stop19h 39m
United Airlines
Deal found 1/17$438

Find 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 January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$354
(United Airlines)

One-way from

$325
(United Airlines)
Provider with most accurate pricing for Boston Logan Intl-Sioux City Sioux Gateway flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Sioux City Sioux Gateway flights.
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From Boston Logan Intl to Sioux City Sioux Gateway
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One-way flight from Boston Logan Intl to Sioux City Sioux Gateway
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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 January 20, 2026.
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

Sat 2/28

9:45 am-5:41 pm

1 stop8h 56m

Sioux City Sioux Gateway

Wed 3/4

1:00 pm-9:48 pm

1 stop7h 48m

$354

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Sat 1/24

3:15 pm-11:47 pm

1 stop9h 32m

Sioux City Sioux Gateway

Sun 1/25

6:00 am-2:02 pm

1 stop7h 02m

$424

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Mon 2/16

7:45 am-5:41 pm

1 stop10h 56m

Sioux City Sioux Gateway

Mon 2/23

1:00 pm-5:19 pm

1 stop27h 19m

$631

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Mon 4/6

6:33 pm-5:56 pm

1 stop24h 23m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/17

Compare providers for flights from Boston to Sioux City

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 Boston to Sioux City in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Boston-Sioux City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Sioux City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Sioux City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Sioux City flights, Cheapflights users trust Expedia the most. Expedia 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 Boston-Sioux City 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 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, January is the cheapest month in which you can book a flight from Boston to Sioux City (average of $220). Flying from Boston to Sioux City in December is currently the most expensive (average of $307). 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 January 20, 2026.
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
9,180 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,180 reviews
United Airlines
7.4
Good
9,180 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 8h 56m. 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 $253.

  • 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, January is the cheapest month in which you can book a flight from Boston to Sioux City (average of $220). Flying from Boston to Sioux City in December is currently the most expensive (average of $307). 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

Browse thousands of different options on Cheapflights for your next trip

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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 January 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$253Average$618FlexibilityNo cancel feeOn-time69%

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