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$428+ 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — BOS
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 September 17, 2025.

Round-trip from

$428
(United Airlines)
From Sioux City Sioux Gateway to Boston Logan Intl
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Find 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 September 17, 2025.

This United Airlines deal was found by Cheapflights users on 9/17. 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.
Thu 10/26:51 pmSUX - BOS
1 stop27h 53mUnited Airlines
Mon 10/66:15 pmBOS - SUX
1 stop5h 45mUnited Airlines
Deal found 9/17$544
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/16:51 pmSUX - BOS
2 stops13h 47mUnited Airlines
Sun 10/58:47 pmBOS - SUX
1 stop27h 13mUnited Airlines
Deal found 9/16$586

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 September 17, 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

Fri 3/6

12:45 pm-12:45 am

1 stop11h 00m

Boston Logan Intl

Tue 3/10

12:20 pm-5:32 pm

1 stop6h 12m

$428

Sioux CityBoston

SUX - BOS

SUXBOS

Sioux City Sioux Gateway

Thu 10/2

6:51 pm-11:44 pm

1 stop27h 53m

Boston Logan Intl

Mon 10/6

6:15 pm-11:00 pm

1 stop5h 45m

$544

Sioux CityBoston

SUX - BOS

SUXBOS

Sioux City Sioux Gateway

Wed 10/1

6:51 pm-9:38 am

2 stops13h 47m

Boston Logan Intl

Sun 10/5

8:47 pm-11:00 pm

1 stop27h 13m

$586

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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, January is the cheapest month in which you can book a flight from Sioux City to Boston (average of $218). Flying from Sioux City to Boston in July is currently the most expensive (average of $311). 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 September 17, 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
8,926 reviews

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

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
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

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 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 11h. 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, January is the cheapest month in which you can book a flight from Sioux City to Boston (average of $218). Flying from Sioux City to Boston in July is currently the most expensive (average of $311). 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
Lincoln
Lowell
Smithfield
Cranston
Chestnut Hill
Chelsea
Warwick
Peabody
Quincy
York Beach
Swansea
Old Orchard Beach
Brockton
Waltham

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$253Average$552FlexibilityNo cancel feeOn-time69%

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