BOS - SUX

$334 Find Cheap Flights from Boston to Sioux City

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Sioux City departing on 1/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Sioux City

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Sioux City, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Sioux City, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$334
United Airlines
Fri 1/23Tue 1/27
BOS - SUX • 1 stop
Cheapest one-way
Multiple Airlines
Fri 11/21
BOS - SUX • multi-stop
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We hope you love your trip to Sioux City!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Sioux City (BOS-SUX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Sioux City that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Sioux City

Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
4:49 pm - 11:47 pmBOS-SUX
7h 58m1 stop
United Airlines Logo
12:45 pm - 9:38 pmSUX-BOS
7h 53m1 stop
$334United Airlines
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Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
4:49 pm - 11:47 pmBOS-SUX
7h 58m1 stop
United Airlines Logo
12:45 pm - 11:49 pmSUX-BOS
10h 04m2 stops
$344United Airlines
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Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
12:08 pm - 11:47 pmBOS-SUX
12h 39m2 stops
United Airlines Logo
6:00 am - 6:32 pmSUX-BOS
11h 32m2 stops
$349United Airlines
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Sun, Feb 15 - Mon, Feb 16
United Airlines Logo
8:11 am - 5:41 pmBOS-SUX
10h 30m2 stops
United Airlines Logo
6:00 am - 1:54 pmSUX-BOS
6h 54m1 stop
$580United Airlines
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Sun, Feb 15 - Mon, Feb 16
United Airlines Logo
8:11 am - 5:41 pmBOS-SUX
10h 30m2 stops
United Airlines Logo
1:00 pm - 9:51 pmSUX-BOS
7h 51m2 stops
$585United Airlines
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Thu, Dec 25 - Sun, Dec 28
United Airlines Logo
6:45 am - 3:53 pmBOS-SUX
10h 08m2 stops
United Airlines Logo
6:54 pm - 11:35 pmSUX-BOS
27h 41m1 stop
$652United Airlines
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Thu, Dec 25 - Sun, Dec 28
United Airlines Logo
6:01 am - 3:53 pmBOS-SUX
10h 52m1 stop
United Airlines Logo
6:54 pm - 11:35 pmSUX-BOS
27h 41m1 stop
$688United Airlines
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Thu, Dec 25 - Sun, Dec 28
United Airlines Logo
6:45 am - 3:53 pmBOS-SUX
10h 08m2 stops
United Airlines Logo
6:54 pm - 10:37 amSUX-BOS
14h 43m2 stops
$712United Airlines
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Fri, Dec 26 - Sun, Dec 28
United Airlines Logo
4:15 pm - 11:15 pmBOS-SUX
8h 00m1 stop
United Airlines Logo
6:54 pm - 11:35 pmSUX-BOS
27h 41m1 stop
$795United Airlines
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Fri, Dec 26 - Sun, Dec 28
United Airlines Logo
6:23 pm - 11:15 pmBOS-SUX
5h 52m1 stop
United Airlines Logo
6:54 pm - 10:37 amSUX-BOS
14h 43m2 stops
$860United Airlines
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Booking Insights

KAYAK's insights & trends for Boston to Sioux City flights

Get data-powered insights and trends into flights from Boston to Sioux City to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Boston to Sioux City?

The average price of all round-trip flights from Boston to Sioux City clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Boston to Sioux City, look for departures on Wednesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Sioux City, Thursday is the cheapest day to fly and Wednesday is the most expensive.

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Good to know

Cheapest flight$334
Flight from Boston to Sioux City

When to book flights from Boston to Sioux City

Are your dates flexible? Find out the best times to travel from Boston to Sioux City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Sioux City

  • What is the cheapest flight from Boston to Sioux City?

    In the last 3 days, the lowest price for a flight from Boston to Sioux City was $334 for a round-trip ticket.

  • Do I need a passport to fly between Boston and Sioux City?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Boston to Sioux City?

    When flying out of Boston you will be using Boston Logan Intl. You will be landing at Sioux City, also known as Sioux City Sioux Gateway.

  • Which aircraft models fly most regularly from Boston to Sioux City?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Sioux City?

    Star Alliance is the only airline alliance operating flights between Boston and Sioux City.

  • How does KAYAK find such low prices on flights from Boston to Sioux City?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Sioux City.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Sioux City?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sioux City from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Sioux City?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sioux City with an airline and back to Boston with another airline. Booking your flights between Boston and SUX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Sioux City?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sioux City from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Boston to Sioux City

 
See real verified KAYAK customer reviews for airlines flying from Boston to Sioux City. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Sioux City? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9029 reviews
7.7Boarding
7.1Entertainment
8.1Crew
7.3Comfort
6.6Food
Airline reviews

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

10.0 ExcellentJeremy, Nov 2025ORD - DCA
Read more United Airlines reviews

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Even though we were delayed, we were able to make our connection

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Everything you need to know for your flight from Boston to Sioux City

Information on your arrival and departure airports

Boston (BOS)
Sioux City (SUX)