Cheap flights from Boston to Sioux City (BOS - SUX)
Find cheap flights from Boston to Sioux City with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Boston to Sioux City
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Sioux City (SUX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 23, 2025.
Popular in | December |
|---|---|
Cheapest in | April |
Average price | $834 |
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?
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.
Rainfall in Sioux City by month
Plan your trip to Sioux City by taking into account the average rainfall totals by month.
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.
Temperature in Sioux City by month
Plan your trip to Sioux City by taking into account the average temperature totals by month.
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).
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.
Traveling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsBrowse 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 Boston to Sioux City
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Boston to Sioux City
Discover the top airline that operate flights from Boston to Sioux City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 23, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$368 | Average$551 | FlexibilityNo cancel fee | On-time69% |