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Cheap flights from Boston to Sioux City from $354

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Sioux City departing on 1/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Boston to Sioux City

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:45 pm - 5:28 pm
BOS
-
SUX
5h 43m1 stop
United Airlines Logo
12:45 pm - 9:38 pm
SUX
-
BOS
7h 53m1 stop
$354United Airlines
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
3:15 pm - 11:47 pm
BOS
-
SUX
9h 32m1 stop
United Airlines Logo
12:45 pm - 9:52 pm
SUX
-
BOS
8h 07m2 stops
$364United Airlines
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
8:15 am - 5:28 pm
BOS
-
SUX
10h 13m2 stops
United Airlines Logo
12:45 pm - 9:52 pm
SUX
-
BOS
8h 07m2 stops
$369United Airlines
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
6:23 pm - 11:15 pm
BOS
-
SUX
5h 52m1 stop
United Airlines Logo
7:50 am - 12:53 pm
SUX
-
BOS
28h 03m1 stop
$573United Airlines
Tue, Dec 30 - Sat, Jan 3
United Airlines Logo
6:23 pm - 11:15 pm
BOS
-
SUX
5h 52m1 stop
United Airlines Logo
7:50 am - 11:54 pm
SUX
-
BOS
15h 04m2 stops
$618United Airlines
Tue, Dec 30 - Sat, Jan 3
United Airlines Logo
2:15 pm - 11:15 pm
BOS
-
SUX
10h 00m2 stops
United Airlines Logo
7:50 am - 11:54 pm
SUX
-
BOS
15h 04m2 stops
$683United Airlines
Tue, Dec 30 - Sat, Jan 3

United Airlines flights from Boston to Sioux City

Our best United Airlines deals on Boston to Sioux City flight tickets
United Airlines
Jan 22
BOS12:45 pmBoston Logan Intl
5h 43m
1 stop
SUX5:28 pmSioux City Sioux Gateway
Jan 26
SUX12:45 pmSioux City Sioux Gateway
7h 53m
1 stop
BOS9:38 pmBoston Logan Intl
$354
Find similar
United Airlines
Jan 22
BOS12:45 pmBoston Logan Intl
12h 02m
2 stops
SUX11:47 pmSioux City Sioux Gateway
Jan 26
SUX12:45 pmSioux City Sioux Gateway
7h 53m
1 stop
BOS9:38 pmBoston Logan Intl
$364
Find similar
United Airlines
Jan 22
BOS8:15 amBoston Logan Intl
10h 13m
2 stops
SUX5:28 pmSioux City Sioux Gateway
Jan 26
SUX12:45 pmSioux City Sioux Gateway
10h 04m
2 stops
BOS11:49 pmBoston Logan Intl
$369
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Sioux City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Boston to Sioux City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Thu 1/22

12:45 pm-5:28 pm

1 stop5h 43m

Sioux City Sioux Gateway

Mon 1/26

12:45 pm-9:38 pm

1 stop7h 53m

$354

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Thu 1/22

3:15 pm-11:47 pm

1 stop9h 32m

Sioux City Sioux Gateway

Mon 1/26

12:45 pm-9:52 pm

2 stops8h 07m

$364

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Thu 1/22

8:15 am-5:28 pm

2 stops10h 13m

Sioux City Sioux Gateway

Mon 1/26

12:45 pm-9:52 pm

2 stops8h 07m

$369

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Tue 12/30

6:23 pm-11:15 pm

1 stop5h 52m

Sioux City Sioux Gateway

Sat 1/3

7:50 am-12:53 pm

1 stop28h 03m

$573

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Tue 12/30

6:23 pm-11:15 pm

1 stop5h 52m

Sioux City Sioux Gateway

Sat 1/3

7:50 am-11:54 pm

2 stops15h 04m

$618

BostonSioux City

BOS - SUX

BOSSUX

Boston Logan Intl

Tue 12/30

2:15 pm-11:15 pm

2 stops10h 00m

Sioux City Sioux Gateway

Sat 1/3

7:50 am-11:54 pm

2 stops15h 04m

$683

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Boston to Sioux City

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Sioux City?

On average, the least expensive day to fly to Sioux City from Boston is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $509. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $532.

What is the cheapest time of day to depart on your flight to Sioux City?

The cheapest time of day to fly to Sioux City is in the afternoon when flights can be purchased for as low as $544. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $638 on average. Flights to Sioux City from Boston in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Boston to Sioux City

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Sioux City according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Sioux City (BOS to SUX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Sioux City

Fastest flight time

5h 43m

Direct flights

None
The fastest flight from Boston to Sioux City takes 5h 43m
There are no direct flights from Boston to Sioux City. There are no popular flight routes from Boston to Sioux City.
Search flight deals

  • How far is Boston Logan Intl to Sioux City Sioux Gateway by plane?

    Boston Logan Intl and Sioux City Sioux Gateway are 1286.6 mi apart from one another. Typically, this will take 5h 43m by plane in normal conditions.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Sioux City Sioux Gateway Airport?

    Prices for flights from Boston Logan Intl Airport to Sioux City Sioux Gateway Airport were last updated today.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Sioux City Sioux Gateway Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Sioux City Sioux Gateway Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Sioux City Sioux Gateway Airport.

  • What documentation or ID do you need to fly to Sioux City Sioux Gateway Airport?

    The travel and health documents you'll need for your trip to Sioux City Sioux Gateway Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sioux City Sioux Gateway Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Boston to Sioux City?

Best airlines flying from Boston to Sioux City

Compare and see reviews for airlines that fly from Boston to Sioux City with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $253Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights

Traveling to a place near Sioux City?

Book flights to Sioux City if you plan to visit one of these locations
Norfolk

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Sioux City?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to Sioux City for you.

Can I find flights from Boston to Sioux City with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to Sioux City flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to Sioux City?

Once all potential Boston to Sioux City flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Boston to Sioux City right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Boston to Sioux City flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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