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

United Airlines, at $254, was found to be the cheapest airline from Sioux City to Boston..

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

Travelers seeking maximum savings on their Sioux City to Boston flight should consider departing on Wednesday mornings 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 Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.

If weather is an important factor for your trip to Boston, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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

Travelers have found that booking a Wednesday departure is the best way to save up to 40% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

When flying from Sioux City to Boston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

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

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

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

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

$254+ Flights from Sioux City to Boston

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Cheap flight deals from Sioux City to Boston

Round-trip from	$254 (United Airlines)

From Sioux City Sioux Gateway to Boston Logan Intl

Search Deals

Find flight deals from Sioux City to Boston

Cheapest flights from Sioux City to Boston
Explore the most affordable flight options available from Sioux City to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.

Thu 9/47:49 amSUX - BOS

1 stop7h 54mUnited Airlines

Sun 9/79:30 amBOS - SUX

1 stop9h 43mUnited Airlines

Deal found 7/17

$254

Best flights from Sioux City to Boston
Discover carefully curated flight deals from Sioux City to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 18, 2025.

Thu 9/47:49 amSUX - BOS

1 stop7h 54mUnited Airlines

Sun 9/79:30 amBOS - SUX

1 stop9h 43mUnited Airlines

Deal found 7/17

$254

Last-minute flights from Sioux City to Boston
Discover last-minute flight deals from Sioux City to Boston. Data last updated July 18, 2025 and is based on user searches.

Thu 8/217:49 amSUX - BOS

1 stop7h 54mUnited Airlines

Sat 8/239:30 amBOS - SUX

1 stop9h 43mUnited Airlines

Deal found 7/16

$489

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Sioux CityBoston

SUX - BOS

SUXBOS

Sioux City Sioux Gateway

Thu 9/4

7:49 am-4:43 pm

1 stop7h 54m

Boston Logan Intl

Sun 9/7

9:30 am-6:13 pm

1 stop9h 43m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

Best time to book a flight from Sioux City to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Sioux City 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 Sioux City to Boston

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

Currently, January is the cheapest month in which you can book a flight from Sioux City to Boston (average of $218). Flying from Sioux City to Boston in July is currently the most expensive (average of $307). 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 Boston

Peruse reviews from past customers who have flown with United Airlines from Sioux City to Boston to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,864 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

8,864 reviews

United Airlines

7.4

Good

8,864 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 Sioux City to Boston round-trip?
United Airlines, at $254, was found to be the cheapest airline from Sioux City to Boston..
Can I find deals for flights from Sioux City to Boston that include hotel bookings?
Yes. In addition to deals on Sioux City to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Sioux City to Boston?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux City to Boston.
Can I find deals for business class flights from Sioux City to Boston?
Yes. Cheapflights offers flight deals from Sioux City to Boston 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 Sioux City to Boston?
Currently, January is the cheapest month in which you can book a flight from Sioux City to Boston (average of $218). Flying from Sioux City to Boston in July is currently the most expensive (average of $307). 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 Sioux City to Boston

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$253	Average$482	FlexibilityNo cancel fee	On-time69%

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$254+ Cheap flights from Sioux City to Boston (SUX - BOS)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Sioux City to Boston with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Sioux City to Boston

Round-trip from

Find flight deals from Sioux City to Boston

Cheapest flights from Sioux City to BostonExplore the most affordable flight options available from Sioux City to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.

Explore the most affordable flight options available from Sioux City to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Sioux City to Boston

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

Cheapflights Insights

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

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

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated July 18, 2025.

Peruse reviews from past customers who have flown with United Airlines from Sioux City to Boston to help guide your decision. You can also see how each airline stacks up 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 Sioux City to Boston. 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 Sioux City to Boston round-trip?

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

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

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

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

Traveling to a place near Boston?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sioux City to Boston

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Sioux City to Boston

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Sioux City to Boston
Explore the most affordable flight options available from Sioux City to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.