BOS - SUX

$291 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 4/23. 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
$291
United Airlines
Thu 4/23Tue 4/28
BOS - SUX • 1 stop
Cheapest one-way
$325
United Airlines
Mon 4/6
BOS - SUX • 1 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

Thu, Apr 23 - Tue, Apr 28
United Airlines Logo
4:50 pm - 11:44 pm
BOS
-
SUX
7h 54m
1 stop
United Airlines Logo
12:55 pm - 7:41 pm
SUX
-
BOS
5h 46m
1 stop
$291United Airlines
Thu, Apr 23 - Tue, Apr 28
United Airlines Logo
4:50 pm - 11:44 pm
BOS
-
SUX
7h 54m
1 stop
United Airlines Logo
12:55 pm - 11:59 pm
SUX
-
BOS
10h 04m
2 stops
$296United Airlines
Thu, Apr 23 - Tue, Apr 28
United Airlines Logo
11:17 am - 11:44 pm
BOS
-
SUX
13h 27m
2 stops
United Airlines Logo
12:55 pm - 11:59 pm
SUX
-
BOS
10h 04m
2 stops
$306United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
9:45 am - 5:41 pm
BOS
-
SUX
8h 56m
1 stop
United Airlines Logo
1:00 pm - 9:48 pm
SUX
-
BOS
7h 48m
1 stop
$427United Airlines
Thu, Feb 19 - Sun, Feb 22
United Airlines Logo
4:47 pm - 11:42 pm
BOS
-
SUX
7h 55m
1 stop
United Airlines Logo
1:00 pm - 9:48 pm
SUX
-
BOS
7h 48m
1 stop
$435United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
12:35 pm - 11:42 pm
BOS
-
SUX
12h 07m
2 stops
United Airlines Logo
6:00 am - 1:54 pm
SUX
-
BOS
6h 54m
1 stop
$437United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
12:35 pm - 11:42 pm
BOS
-
SUX
12h 07m
2 stops
United Airlines Logo
1:00 pm - 9:51 pm
SUX
-
BOS
7h 51m
2 stops
$442United Airlines
Thu, Feb 19 - Sun, Feb 22
United Airlines Logo
10:30 am - 5:41 pm
BOS
-
SUX
8h 11m
2 stops
United Airlines Logo
1:00 pm - 9:48 pm
SUX
-
BOS
7h 48m
1 stop
$445United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
4:50 pm - 11:42 pm
BOS
-
SUX
7h 52m
1 stop
United Airlines Logo
1:00 pm - 9:48 pm
SUX
-
BOS
7h 48m
1 stop
$449United Airlines
Wed, Apr 22 - Mon, Apr 27
United Airlines Logo
7:15 am - 5:56 pm
BOS
-
SUX
11h 41m
1 stop
United Airlines Logo
6:32 pm - 9:59 pm
SUX
-
BOS
26h 27m
1 stop
$474United 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 – 77% 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 $507.

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 17m.

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 30m.

Find deals

Good to know

Cheapest flight$291
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 $325 for a one-way ticket and $291 for a round-trip.

  • 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 9174 reviews
6.6Food
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
Airline reviews

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

8.0 ExcellentAnonymous, Jan 2026
BNA - EWR
Read more United Airlines reviews

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

The flight crew where really good. Better then the crew from BNE to SFO

Delayed, toilets did not flush, pilot parked to far away from Gate

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

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)