BOS - SUX

$491 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 5/7. 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
$491
United Airlines
Thu 5/7Sun 5/10
BOS - SUX • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Boston and Sioux City. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Denver (DEN)
Cheapest • Avg $353 (round-trip)
Chicago (ORD)
Shortest trip • 6h 34m (one-way)
Insights
Insights
Insights
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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

Thu, May 7 - Sun, May 10
United Airlines Logo
12:30 pm - 6:06 pm
BOS
-
SUX
6h 36m
1 stop
United Airlines Logo
6:00 am - 1:47 pm
SUX
-
BOS
6h 47m
1 stop
$491United Airlines
Tue, May 19 - Tue, May 26
United Airlines Logo
10:45 am - 6:06 pm
BOS
-
SUX
8h 21m
1 stop
United Airlines Logo
7:53 am - 4:29 pm
SUX
-
BOS
7h 36m
1 stop
$575United Airlines
Tue, May 19 - Tue, May 26
United Airlines Logo
10:00 am - 6:06 pm
BOS
-
SUX
9h 06m
2 stops
United Airlines Logo
7:53 am - 4:29 pm
SUX
-
BOS
7h 36m
1 stop
$583United Airlines
Thu, May 7 - Sun, May 10
United Airlines Logo
12:30 pm - 6:06 pm
BOS
-
SUX
6h 36m
1 stop
United Airlines Logo
6:00 am - 4:21 pm
SUX
-
BOS
9h 21m
2 stops
$599United Airlines
Tue, May 19 - Tue, May 26
United Airlines Logo
8:30 am - 6:06 pm
BOS
-
SUX
10h 36m
2 stops
United Airlines Logo
11:32 am - 9:53 pm
SUX
-
BOS
9h 21m
2 stops
$717United Airlines
Thu, Jul 16 - Sun, Jul 19
United Airlines Logo
10:55 am - 5:54 pm
BOS
-
SUX
7h 59m
1 stop
United Airlines Logo
11:32 am - 9:59 pm
SUX
-
BOS
9h 27m
1 stop
$779United Airlines
Thu, Jul 16 - Sun, Jul 19
United Airlines Logo
8:00 am - 5:54 pm
BOS
-
SUX
10h 54m
2 stops
United Airlines Logo
7:43 am - 4:29 pm
SUX
-
BOS
7h 46m
1 stop
$828United Airlines
Thu, May 7 - Sun, May 10
United Airlines Logo
9:30 am - 6:06 pm
BOS
-
SUX
9h 36m
2 stops
United Airlines Logo
6:00 am - 4:21 pm
SUX
-
BOS
9h 21m
2 stops
$846United Airlines
Thu, Jul 16 - Sun, Jul 19
United Airlines Logo
8:00 am - 5:54 pm
BOS
-
SUX
10h 54m
2 stops
United Airlines Logo
7:43 am - 4:38 pm
SUX
-
BOS
7h 55m
2 stops
$1,040United Airlines
Thu, Jul 16 - Sun, Jul 19
United Airlines Logo
6:00 am - 5:54 pm
BOS
-
SUX
12h 54m
3 stops
United Airlines Logo
7:43 am - 9:53 pm
SUX
-
BOS
13h 10m
2 stops
$1,820United Airlines
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 is the most popular layover airport when flying from Boston to Sioux City?

Percentage of 1-stop round-trip flights from Boston to Sioux City chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Chicago (ORD) is the top choice – 88% of KAYAK users who clicked on 1-stop flights from Boston to Sioux City picked an itinerary connecting there.

What is the cheapest layover airport when flying from Boston to Sioux City?

Average round-trip price for 1-stop flights from Boston to Sioux City clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Denver (DEN) offer the most affordable fares, with an average round-trip price of $353.

Which layover airport offers the shortest total travel time from Boston to Sioux City?

Shortest average total travel time for 1-stop one-way flights from Boston to Sioux City via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Chicago (ORD) for the shortest journey. The average one-way travel time for flights connecting there is 6h 34m.

Which layover airport has the quickest connection when flying from Boston to Sioux City?

Average layover duration at different layover airports for 1-stop one-way flights from Boston to Sioux City, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Denver (DEN) often has the shortest layovers from Boston to Sioux City, with an average of 1h 16m.

Find deals

Good to know

Cheapest flight$491
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 $491 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 9607 reviews
7.7Boarding
7.3Comfort
7.1Entertainment
8.1Crew
6.6Food
Airline reviews

My bags were misplaced!!! Im in a foreign country with no bags

2.0 MediocreAnonymous, Apr 2026
CLT - IAD
Read more United Airlines reviews

My bags were misplaced!!! Im in a foreign country with no bags

The entertainment options on the seat back video boards were nice.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

Crew was friendly. Seats are too narrow, particularly when a big person is in the adjacent seat, but I understand this is due to smaller planes usually flight into Lincoln. I have experienced several flight delays going out and coming into Lincoln airport, I say maybe 50% or higher of the flights I've taken out of this airport have been delayed.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

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)