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$399+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — BOS
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
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 August 2, 2026.

This United Airlines deal was found by Cheapflights users on 7/31. 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 8/159:05 am
SUX
-
BOS
2 stops9h 23m
United Airlines
Wed 8/1910:38 am
BOS
-
SUX
1 stop8h 15m
United Airlines
Deal found 7/31$399
This United Airlines deal was found by Cheapflights users on 7/30. 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 12/59:03 am
SUX
-
BOS
1 stop7h 25m
United Airlines
Wed 12/912:20 pm
BOS
-
SUX
1 stop6h 34m
United Airlines
Deal found 7/30$414
This United Airlines deal was found by Cheapflights users on 7/31. 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 8/3111:30 am
SUX
-
BOS
2 stops11h 04m
United Airlines
Mon 9/75:08 pm
BOS
-
SUX
1 stop7h 35m
United Airlines
Deal found 7/31$590

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 August 2, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$399
(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 August 2, 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

Sat 12/5

9:03 am-5:28 pm

1 stop7h 25m

Boston Logan Intl

Wed 12/9

12:20 pm-5:54 pm

1 stop6h 34m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Sioux City-Boston flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Sioux City-Boston flight deals on Cheapflights vs. Expedia <90% 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 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 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.

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 7h 25m. 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.

  • 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
Waltham
Cambridge
Concord
Randolph
Brockton
Seekonk
Hampton Beach
Cranston
Warwick
Peabody
Dedham
Auburn
York Beach
Chelsea
Londonderry
Swansea
Fitchburg
North Falmouth
Braintree
Revere

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