BOS - SUX

$420 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 7/24. 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
$420
United Airlines
Fri 7/24Sun 7/26
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

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 - 4:29 pm
SUX
-
BOS
7h 19m
1 stop
$420United Airlines
Wed, Jul 15 - Tue, Jul 21
United Airlines Logo
8:15 pm - 5:53 pm
BOS
-
SUX
22h 38m
1 stop
United Airlines Logo
8:10 am - 4:29 pm
SUX
-
BOS
7h 19m
1 stop
$448United Airlines
Wed, Jul 15 - Tue, Jul 21
United Airlines Logo
8:15 pm - 5:53 pm
BOS
-
SUX
22h 38m
1 stop
United Airlines Logo
8:10 am - 5:57 pm
SUX
-
BOS
8h 47m
2 stops
$458United Airlines
Tue, Jul 21 - Mon, Jul 27
United Airlines Logo
6:43 pm - 5:53 pm
BOS
-
SUX
24h 10m
1 stop
United Airlines Logo
8:10 am - 9:29 am
SUX
-
BOS
24h 19m
1 stop
$482United Airlines
Fri, Jul 3 - Wed, Jul 8
United Airlines Logo
10:35 am - 5:53 pm
BOS
-
SUX
8h 18m
1 stop
United Airlines Logo
8:10 am - 9:56 pm
SUX
-
BOS
12h 46m
1 stop
$483United Airlines
Fri, Jul 3 - Wed, Jul 8
United Airlines Logo
9:30 am - 5:53 pm
BOS
-
SUX
9h 23m
2 stops
United Airlines Logo
8:10 am - 11:21 pm
SUX
-
BOS
14h 11m
1 stop
$493United Airlines
Fri, Jul 24 - Sun, Jul 26
United Airlines Logo
8:00 am - 5:53 pm
BOS
-
SUX
10h 53m
2 stops
United Airlines Logo
8:10 am - 5:31 pm
SUX
-
BOS
8h 21m
1 stop
$518United Airlines
Fri, Jul 24 - Sun, Jul 26
United Airlines Logo
7:19 am - 5:53 pm
BOS
-
SUX
11h 34m
1 stop
United Airlines Logo
8:10 am - 9:29 am
SUX
-
BOS
24h 19m
1 stop
$544United Airlines
Fri, Jul 3 - Wed, Jul 8
United Airlines Logo
6:05 am - 5:53 pm
BOS
-
SUX
12h 48m
3 stops
United Airlines Logo
8:10 am - 11:21 pm
SUX
-
BOS
14h 11m
1 stop
$563United Airlines
Tue, Jul 21 - Mon, Jul 27
United Airlines Logo
6:05 am - 5:53 pm
BOS
-
SUX
36h 48m
3 stops
United Airlines Logo
8:10 am - 9:29 am
SUX
-
BOS
24h 19m
1 stop
$571United 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$420
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 $420 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 9865 reviews
7.7Boarding
8.1Crew
7.1Entertainment
7.3Comfort
6.6Food
Airline reviews

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

4.0 OkayPrincess, Jun 2026
IAH - SAV
Read more United Airlines reviews

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

They delayed the flight 3 hours because it wasn't full they moved us to 5 different gates probably the worst airline ever not even spirit is this bad.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Airline tickets are not cheap. You expect reliable competent service. Thanks to canceled flights and botched transfers we arrived at our destination two days late. This is not acceptable

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.

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)