What is the cheapest airline to fly from Boston to Sioux City round-trip?

Cheapflights users have booked flights from Boston to Sioux City round-trip from $462. This flight start at 26% lower than the current average price 3 months from now.

What is the cheapest day to fly from Boston to Sioux City?

Travelers seeking maximum savings on their Boston to Sioux City flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Sioux City ranges from 0.7 - 4.2 inches per month. June is typically the wettest month, when rainfall can reach 4.2 in. January is typically the driest time to visit Sioux City when rainfall is around 0.7 in.

If weather is an important factor for your trip to Sioux City, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

What is the cheapest day to fly round-trip from Boston to Sioux City?

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 4% on the overall cost on flights from Boston to Sioux City.

What is the cheapest month to fly from Boston to Sioux City?

Our data shows that April tends to be the cheapest month to fly to Sioux City from Boston. Users have commonly found prices around $631 for the month, but tickets can be as low as $368. Due to multiple factors, prepare for potentially higher prices in December.

What is the cheapest time of day to fly from BOS to SUX?

One of the essential ways to save on airfare from Boston to Sioux City is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 15% on airfare.

Can I find deals for flights from Boston to Sioux City that include hotel bookings?

Yes. In addition to deals on Boston to Sioux City flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Boston to Sioux City?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Sioux City.

Can I find deals for business class flights from Boston to Sioux City?

Yes. Cheapflights offers flight deals from Boston to Sioux City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$462+ Flights from Boston to Sioux City

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Cheap flight deals from Boston to Sioux City

Round-trip from	$462 (United Airlines)
Popular in	December
Cheapest in	April
Average price	$500

From Boston Logan Intl to Sioux City Sioux Gateway

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($40 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($32 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

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Find flight deals from Boston to Sioux City

Cheapest flights from Boston to Sioux City
Explore the most affordable flight options available from Boston to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Mon 8/44:27 pmBOS - SUX

1 stop7h 13mUnited Airlines

Tue 8/510:10 amSUX - BOS

2 stops9h 44mUnited Airlines

Deal found 7/2

$462

Best flights from Boston to Sioux City
Discover carefully curated flight deals from Boston to Sioux City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Mon 8/44:27 pmBOS - SUX

1 stop7h 13mUnited Airlines

Tue 8/510:10 amSUX - BOS

2 stops9h 44mUnited Airlines

Deal found 7/2

$462

Last-minute flights from Boston to Sioux City
Discover last-minute flight deals from Boston to Sioux City. Data last updated July 3, 2025 and is based on user searches.

Thu 7/104:27 pmBOS - SUX

1 stop7h 13mUnited Airlines

Wed 7/1610:10 amSUX - BOS

1 stop8h 08mUnited Airlines

Deal found 7/2

$474

Mon 8/44:27 pmBOS - SUX

1 stop7h 13mUnited Airlines

Tue 8/510:10 amSUX - BOS

2 stops9h 44mUnited Airlines

Deal found 7/2

$462

Cheapflights Fare Finder

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

Mon 8/4

4:27 pm-10:40 pm

1 stop7h 13m

Sioux City Sioux Gateway

Tue 8/5

10:10 am-8:54 pm

2 stops9h 44m

$462

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Best time to book a flight from Boston to Sioux City

Have a flexible travel schedule? Discover the best time to fly to Sioux City from Boston with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Boston to Sioux City?

Currently, October is the cheapest month in which you can book a flight from Boston to Sioux City (average of $318). Flying from Boston to Sioux City in March is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Sioux City

Get a feel of what it's like to fly with United Airlines from Boston to Sioux City by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,861 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines

7.4

Good

8,861 reviews

United Airlines

7.4

Good

8,861 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

What is the cheapest airline to fly from Boston to Sioux City round-trip?
Cheapflights users have booked flights from Boston to Sioux City round-trip from $462. This flight start at 26% lower than the current average price 3 months from now.
Can I find deals for flights from Boston to Sioux City that include hotel bookings?
Yes. In addition to deals on Boston to Sioux City flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Boston to Sioux City?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Sioux City.
Can I find deals for business class flights from Boston to Sioux City?
Yes. Cheapflights offers flight deals from Boston to Sioux City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Boston to Sioux City?
Currently, October is the cheapest month in which you can book a flight from Boston to Sioux City (average of $318). Flying from Boston to Sioux City in March is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top airline flying from Boston to Sioux City

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$368	Average$551	FlexibilityNo cancel fee	On-time69%

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$462+ Cheap flights from Boston to Sioux City (BOS - SUX)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Boston to Sioux City with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Boston to Sioux City

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Boston to Sioux City

Cheapest flights from Boston to Sioux CityExplore the most affordable flight options available from Boston to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Explore the most affordable flight options available from Boston to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boston to Sioux City that are best for you.

Best time to book a flight from Boston to Sioux City

Have a flexible travel schedule? Discover the best time to fly to Sioux City from Boston with our price prediction graph.

Cheapflights Insights

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

What is the cheapest month to book a flight from Boston to Sioux City?

Reviews of airlines servicing Sioux City

Get a feel of what it's like to fly with United Airlines from Boston to Sioux City by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Boston to Sioux City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What is the cheapest airline to fly from Boston to Sioux City round-trip?

Can I find deals for flights from Boston to Sioux City that include hotel bookings?

How can I find direct flights from Boston to Sioux City?

Can I find deals for business class flights from Boston to Sioux City?

What is the cheapest month to book a flight from Boston to Sioux City?

Traveling to a place near Boston?

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Alternative routes for Boston to Sioux City

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Top airline flying from Boston to Sioux City

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Book with Flexibility

Travel Smart

Cheapest flights from Boston to Sioux City
Explore the most affordable flight options available from Boston to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.