BOS - SUX

$396 Find Cheap Flights from Boston to Sioux City - Compare and Save

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 10/28. 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
$396
United Airlines
Wed 10/28Sat 10/31
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
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Insights
Top layover airports
Denver (DEN)
Cheapest • Avg $353 (round-trip)
Chicago (ORD)
Shortest trip • 6h 33m (one-way)
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

Wed, Oct 28 - Sat, Oct 31
United Airlines Logo
10:44 am - 5:54 pm
BOS
-
SUX
8h 10m
1 stop
United Airlines Logo
9:03 am - 5:28 pm
SUX
-
BOS
7h 25m
1 stop
$396United Airlines
Wed, Oct 28 - Sat, Oct 31
United Airlines Logo
9:50 am - 5:54 pm
BOS
-
SUX
9h 04m
2 stops
United Airlines Logo
9:03 am - 4:26 pm
SUX
-
BOS
6h 23m
1 stop
$406United Airlines
Wed, Oct 28 - Sat, Oct 31
United Airlines Logo
6:00 am - 5:54 pm
BOS
-
SUX
12h 54m
3 stops
United Airlines Logo
9:03 am - 5:28 pm
SUX
-
BOS
7h 25m
1 stop
$411United Airlines
Fri, Jul 24 - Sun, Jul 26
United Airlines Logo
10:35 am - 5:53 pm
BOS
-
SUX
8h 18m
1 stop
United Airlines Logo
8:10 am - 5:31 pm
SUX
-
BOS
8h 21m
1 stop
$415United Airlines
Wed, Oct 28 - Sat, Oct 31
United Airlines Logo
6:00 am - 5:54 pm
BOS
-
SUX
12h 54m
3 stops
United Airlines Logo
9:03 am - 6:49 pm
SUX
-
BOS
8h 46m
2 stops
$416United Airlines
Tue, Jul 14 - Tue, Jul 28
United Airlines Logo
9:50 am - 5:53 pm
BOS
-
SUX
9h 03m
1 stop
United Airlines Logo
8:10 am - 5:31 pm
SUX
-
BOS
8h 21m
1 stop
$484United Airlines
Sun, Jul 12 - Sun, Jul 19
United Airlines Logo
10:35 am - 5:53 pm
BOS
-
SUX
8h 18m
1 stop
United Airlines Logo
8:10 am - 4:29 pm
SUX
-
BOS
7h 19m
1 stop
$486United Airlines
Tue, Jul 21 - Mon, Jul 27
United Airlines Logo
10:35 am - 5:53 pm
BOS
-
SUX
8h 18m
1 stop
United Airlines Logo
11:32 am - 10:06 pm
SUX
-
BOS
9h 34m
1 stop
$489United Airlines
Tue, Jul 14 - Tue, Jul 28
United Airlines Logo
9:50 am - 5:53 pm
BOS
-
SUX
9h 03m
1 stop
United Airlines Logo
8:10 am - 4:38 pm
SUX
-
BOS
7h 28m
2 stops
$494United Airlines
Tue, Jul 14 - Tue, Jul 28
United Airlines Logo
6:43 pm - 10:57 am
BOS
-
SUX
17h 14m
2 stops
United Airlines Logo
8:10 am - 4:38 pm
SUX
-
BOS
7h 28m
2 stops
$502United 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 – 87% 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 33m.

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$396
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 5 days, the lowest price for a flight from Boston to Sioux City was $396 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 9831 reviews
6.6Food
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
Airline reviews

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

2.0 MediocreAnonymous, Jun 2026
ORD - BHM
Read more United Airlines reviews

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Service was professional and quick. Premium economy seat was comfortable given the class

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

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)