BOS - SUX

$334 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 7/4. 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
Sat 7/4Sat 7/11
BOS - SUX • 2 stops
Cheapest one-way
$434
United Airlines
Wed 6/17
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
Insights
Insights
Top layover airports
Cheapest • Avg $353 (round-trip)
Shortest trip • 6h 33m (one-way)
Insights
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

Sat, Jul 4 - Sat, Jul 11
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
$334United Airlines
Sat, Jul 4 - Sat, Jul 11
United Airlines Logo
6:05 am - 5:53 pm
BOS
-
SUX
12h 48m
2 stops
United Airlines Logo
8:10 am - 5:24 pm
SUX
-
BOS
8h 14m
2 stops
$339United Airlines
Sat, Jul 4 - Sat, Jul 11
United Airlines Logo
12:30 pm - 5:53 pm
BOS
-
SUX
6h 23m
1 stop
United Airlines Logo
8:10 am - 4:29 pm
SUX
-
BOS
7h 19m
1 stop
$344United Airlines
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
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
$401United 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
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
$414United 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 - 6:49 pm
SUX
-
BOS
8h 46m
2 stops
$416United 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
$421United 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.

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 5 days, the lowest price for a flight from Boston to Sioux City was $434 for a one-way ticket and $334 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 9804 reviews
7.3Comfort
7.1Entertainment
8.1Crew
6.6Food
7.7Boarding
Airline reviews

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

10.0 ExcellentBill, Jun 2026
IAH - LAX
Read more United Airlines reviews

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

The flight was delayed, they didn’t even have water for the toilets or for drinks

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

Boarded early, left early, arrived 40 mins early! A win win for me!

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

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

Information on your arrival and departure airports