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$354+ Cheap flights from Sioux City to Boston (SUX - BOS)

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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — BOS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Sioux City to Boston

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

This United Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/3111:48 amSUX - BOS
2 stops11h 06mUnited Airlines
Sun 1/46:23 pmBOS - SUX
1 stop5h 52mUnited Airlines
Deal found 12/16$404

Find flight deals from Sioux City to Boston

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

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$354
(United Airlines)
Provider with most accurate pricing for Sioux City Sioux Gateway-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Sioux City Sioux Gateway-Boston Logan Intl flights.
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From Sioux City Sioux Gateway to Boston Logan Intl
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux City to Boston 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 December 18, 2025.
Use the filters below to find and compare flights from Sioux City to Boston that are best for you.

Fly from

Sioux City

Fly to

Boston

Route

Depart

Return

Price

Sioux CityBoston

SUX - BOS

SUXBOS

Sioux City Sioux Gateway

Sat 1/24

6:00 am-3:37 pm

1 stop8h 37m

Boston Logan Intl

Tue 1/27

3:15 pm-11:47 pm

1 stop9h 32m

$354

Sioux CityBoston

SUX - BOS

SUXBOS

Sioux City Sioux Gateway

Wed 12/31

11:48 am-11:54 pm

2 stops11h 06m

Boston Logan Intl

Sun 1/4

6:23 pm-11:15 pm

1 stop5h 52m

$404

Sioux CityBoston

SUX - BOS

SUXBOS

Sioux City Sioux Gateway

Thu 4/2

6:30 pm-9:57 am

2 stops14h 27m

Boston Logan Intl

Sun 4/5

7:15 am-5:32 pm

1 stop11h 17m

$570

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Compare providers for flights from Sioux City to Boston

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

*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 Sioux City-Boston flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Sioux City-Boston flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Sioux City-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux City-Boston flights, Cheapflights users trust eDreams the most. eDreams 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 Sioux City-Boston 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 Sioux City to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Sioux City 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 Sioux City to Boston

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

Currently, October is the cheapest month in which you can book a flight from Sioux City to Boston (average of $178). Flying from Sioux City to Boston in March is currently the most expensive (average of $369). 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 Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated December 18, 2025.
Peruse reviews from past customers who have flown with United Airlines from Sioux City to Boston to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,091 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability
United Airlines
7.4
Good
9,091 reviews
United Airlines
7.4
Good
9,091 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

Related info for your journey

Find useful and relevant information for your journey from Sioux City to Boston. 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 Sioux City to Boston?

    Airlines like United Airlines fly from Sioux City to Boston in about 8h 37m. The time it takes to get you to your destination can typically vary by up to . Sioux City and Boston are separated by a distance of 1289 mi.

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

    United Airlines, at $253, was found to be the cheapest airline from Sioux City to Boston..

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sioux City to Boston 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 Sioux City to Boston?

    Currently, October is the cheapest month in which you can book a flight from Sioux City to Boston (average of $178). Flying from Sioux City to Boston in March is currently the most expensive (average of $369). 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 Boston?

Book flights to Boston if you plan to visit one of these locations
Cambridge
Medford
Hampton Beach
Watertown
Seabrook
Seekonk
Brockton
Cranston
Lincoln
Lowell
Smithfield
Peabody
Quincy
York Beach
Warwick
Londonderry
Swansea
Old Orchard Beach
Waltham
Chelsea

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Top airline flying from Sioux City to Boston

Discover the top airline that operate flights from Sioux City to Boston. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$253Average$552FlexibilityNo cancel feeOn-time69%

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