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$385+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — BOS
Jun 4 — Jun 111
Thu 6/4
Thu 6/11
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 May 5, 2026.

This United Airlines deal was found by Cheapflights users on 5/4. 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 9/309:03 am
SUX
-
BOS
1 stop6h 23m
United Airlines
Tue 10/612:34 pm
BOS
-
SUX
2 stops12h 08m
United Airlines
Deal found 5/4$385
This United Airlines deal was found by Cheapflights users on 5/3. 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 9/159:03 am
SUX
-
BOS
1 stop6h 18m
United Airlines
Sat 9/196:00 am
BOS
-
SUX
2 stops12h 53m
United Airlines
Deal found 5/3$399
This United Airlines deal was found by Cheapflights users on 5/2. 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 9/2811:30 am
SUX
-
BOS
2 stops12h 39m
United Airlines
Sat 10/312:34 pm
BOS
-
SUX
2 stops12h 08m
United Airlines
Deal found 5/2$454
This United Airlines deal was found by Cheapflights users on 5/4. 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 5/196:00 am
SUX
-
BOS
2 stops9h 16m
United Airlines
Sat 5/235:05 pm
BOS
-
SUX
1 stop25h 49m
United Airlines
Deal found 5/4$538

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 May 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$385
(United Airlines)
Provider with most accurate pricing for Sioux City Sioux Gateway-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux City Sioux Gateway-Boston Logan Intl flights.
Search Deals
From Sioux City Sioux Gateway to Boston Logan Intl
Search Deals

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 May 5, 2026.
Use the filters below to find and compare flights from Sioux City to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Sioux CityBoston

SUX - BOS

SUXBOS

Sioux City Sioux Gateway

Tue 9/15

9:03 am-4:21 pm

1 stop6h 18m

Boston Logan Intl

Sat 9/19

5:08 pm-11:46 pm

1 stop7h 38m

$414

Sioux CityBoston

SUX - BOS

SUXBOS

Sioux City Sioux Gateway

Mon 9/28

11:30 am-1:09 am

2 stops12h 39m

Boston Logan Intl

Sat 10/3

12:34 pm-11:42 pm

2 stops12h 08m

$454

Sioux CityBoston

SUX - BOS

SUXBOS

Sioux City Sioux Gateway

Tue 5/19

6:00 am-4:16 pm

2 stops9h 16m

Boston Logan Intl

Sat 5/23

5:05 pm-5:54 pm

1 stop25h 49m

$538

Sioux CityBoston

SUX - BOS

SUXBOS

Sioux City Sioux Gateway

Sat 5/16

6:00 am-4:36 pm

2 stops9h 36m

Boston Logan Intl

Wed 5/20

4:35 pm-5:54 pm

1 stop26h 19m

$638

Sioux CityBoston

SUX - BOS

SUXBOS

Sioux City Sioux Gateway

Fri 7/17

7:43 am-11:18 pm

1 stop14h 35m

Boston Logan Intl

Sun 7/19

4:57 pm-11:41 pm

1 stop7h 44m

$702

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Sorted by cheapest first

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux City-Boston flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

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 May 5, 2026.
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
9,683 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,683 reviews
United Airlines
7.4
Good
9,683 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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 6h 18m. 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 $389, 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.

See more FAQs

Traveling to a place near Boston?

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

Browse thousands of different options on Cheapflights for your next trip

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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 May 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$389Average$557FlexibilityNo cancel feeOn-time69%

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