Cheap Flights from Buffalo (BUF) to Sioux City (SUX)

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to Sioux City, IA (SUX-Sioux Gateway)

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Cheap Flights from Buffalo to Sioux City (BUF-SUX)

Prices were available within the past 7 days and start at for one-way flights and $324 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Aug 19 - Mon, Sep 7
BUF
Buffalo
SUX
Sioux City
$324 Roundtrip, found 2 days ago
$324
Roundtrip
found 2 days ago
Select United flight, departing Wed, Aug 19 from Buffalo to Sioux City, returning Mon, Sep 7, priced at $324 found 2 days ago
United
Wed, Aug 19 - Sun, Sep 6
BUF
Buffalo
SUX
Sioux City
$334 Roundtrip, found 2 days ago
$334
Roundtrip
found 2 days ago
Select United flight, departing Wed, Aug 19 from Buffalo to Sioux City, returning Sun, Sep 6, priced at $334 found 2 days ago
United
Wed, Jul 22 - Wed, Aug 12
BUF
Buffalo
SUX
Sioux City
$339 Roundtrip, found 2 days ago
$339
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jul 22 from Buffalo to Sioux City, returning Wed, Aug 12, priced at $339 found 2 days ago
United
Fri, Aug 21 - Mon, Sep 7
BUF
Buffalo
SUX
Sioux City
$359 Roundtrip, found 2 days ago
$359
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 21 from Buffalo to Sioux City, returning Mon, Sep 7, priced at $359 found 2 days ago
United
Fri, Aug 21 - Sun, Sep 6
BUF
Buffalo
SUX
Sioux City
$369 Roundtrip, found 2 days ago
$369
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 21 from Buffalo to Sioux City, returning Sun, Sep 6, priced at $369 found 2 days ago
United
Wed, Aug 19 - Wed, Sep 9
BUF
Buffalo
SUX
Sioux City
$374 Roundtrip, found 2 days ago
$374
Roundtrip
found 2 days ago
Select United flight, departing Wed, Aug 19 from Buffalo to Sioux City, returning Wed, Sep 9, priced at $374 found 2 days ago
United
Sun, Aug 23 - Sun, Sep 6
BUF
Buffalo
SUX
Sioux City
$384 Roundtrip, found 2 days ago
$384
Roundtrip
found 2 days ago
Select United flight, departing Sun, Aug 23 from Buffalo to Sioux City, returning Sun, Sep 6, priced at $384 found 2 days ago
United
Thu, Aug 27 - Thu, Sep 17
BUF
Buffalo
SUX
Sioux City
$394 Roundtrip, found 2 days ago
$394
Roundtrip
found 2 days ago
Select United flight, departing Thu, Aug 27 from Buffalo to Sioux City, returning Thu, Sep 17, priced at $394 found 2 days ago
United
Tue, May 12 - Wed, May 27
BUF
Buffalo
SUX
Sioux City
$404 Roundtrip, found 3 days ago
$404
Roundtrip
found 3 days ago
Select United flight, departing Tue, May 12 from Buffalo to Sioux City, returning Wed, May 27, priced at $404 found 3 days ago
United
Wed, May 20 - Tue, Jun 2
BUF
Buffalo
SUX
Sioux City
$407 Roundtrip, found 2 days ago
$407
Roundtrip
found 2 days ago
Select United flight, departing Wed, May 20 from Buffalo to Sioux City, returning Tue, Jun 2, priced at $407 found 2 days ago
United
Fri, Aug 21 - Wed, Sep 9
BUF
Buffalo
SUX
Sioux City
$409 Roundtrip, found 2 days ago
$409
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 21 from Buffalo to Sioux City, returning Wed, Sep 9, priced at $409 found 2 days ago
United
Tue, Aug 11 - Mon, Aug 24
BUF
Buffalo
SUX
Sioux City
$418 Roundtrip, found 2 days ago
$418
Roundtrip
found 2 days ago
Select United flight, departing Tue, Aug 11 from Buffalo to Sioux City, returning Mon, Aug 24, priced at $418 found 2 days ago
United
Thu, Aug 6 - Sun, Aug 23
BUF
Buffalo
SUX
Sioux City
$419 Roundtrip, found 2 days ago
$419
Roundtrip
found 2 days ago
Select United flight, departing Thu, Aug 6 from Buffalo to Sioux City, returning Sun, Aug 23, priced at $419 found 2 days ago
United
Tue, Aug 11 - Tue, Aug 25
BUF
Buffalo
SUX
Sioux City
$423 Roundtrip, found 2 days ago
$423
Roundtrip
found 2 days ago
Select United flight, departing Tue, Aug 11 from Buffalo to Sioux City, returning Tue, Aug 25, priced at $423 found 2 days ago
United
Sat, May 2 - Wed, May 20
BUF
Buffalo
SUX
Sioux City
$424 Roundtrip, found 2 days ago
$424
Roundtrip
found 2 days ago
Select United flight, departing Sat, May 2 from Buffalo to Sioux City, returning Wed, May 20, priced at $424 found 2 days ago
United
Wed, May 20 - Sat, Jun 6
BUF
Buffalo
SUX
Sioux City
$426 Roundtrip, found 3 days ago
$426
Roundtrip
found 3 days ago
Select United flight, departing Wed, May 20 from Buffalo to Sioux City, returning Sat, Jun 6, priced at $426 found 3 days ago
United
Thu, Apr 16 - Sat, May 2
BUF
Buffalo
SUX
Sioux City
$429 Roundtrip, found 3 days ago
$429
Roundtrip
found 3 days ago
Select United flight, departing Thu, Apr 16 from Buffalo to Sioux City, returning Sat, May 2, priced at $429 found 3 days ago
United
Wed, Aug 19 - Fri, Sep 11
BUF
Buffalo
SUX
Sioux City
$429 Roundtrip, found 2 days ago
$429
Roundtrip
found 2 days ago
Select United flight, departing Wed, Aug 19 from Buffalo to Sioux City, returning Fri, Sep 11, priced at $429 found 2 days ago
United
Tue, Jul 21 - Tue, Aug 4
BUF
Buffalo
SUX
Sioux City
$434 Roundtrip, found 2 days ago
$434
Roundtrip
found 2 days ago
Select United flight, departing Tue, Jul 21 from Buffalo to Sioux City, returning Tue, Aug 4, priced at $434 found 2 days ago
United
Tue, Aug 4 - Tue, Aug 18
BUF
Buffalo
SUX
Sioux City
$439 Roundtrip, found 2 days ago
$439
Roundtrip
found 2 days ago
Select United flight, departing Tue, Aug 4 from Buffalo to Sioux City, returning Tue, Aug 18, priced at $439 found 2 days ago

Alternative airports near Sioux City

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sioux Gateway SUX. Cheapest and Closest option available. Average driving time to city center is 9 minutes. Flights from $478
SUX
Sioux Gateway
CheapestClosest
Average driving time to city center9 min
Flights from $478
Flights from Buffalo (BUF) to Sioux City (SUX)
Origin airport
Buffalo Niagara Intl.
Destination airport
Sioux Gateway
Roundtrip price
$323
Distance
895 mi

Buffalo to Sioux City Flights

The cheapest times to fly from Buffalo to Sioux City

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Buffalo to Sioux City are during the month of August. You can find some of the cheapest flights from Buffalo to Sioux City with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Buffalo to Sioux City

Sunday is one of the best days to book for cheap flights from Buffalo to Sioux City: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Buffalo to Sioux City

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Buffalo to Sioux City in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Buffalo to Sioux City flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Buffalo to Sioux City airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway) cost?
You can find cheap one-way flights and cheap return flights from $324 Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway) with Expedia. Roundtrip flights usually range from $313 to $1213. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway)?
The cheapest month to fly from BUF to SUX is August when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway)?
Enter BUF to SUX and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway)?
United is one of the cheapest airlines offering connecting flights from Buffalo, NY (BUF) to Sioux City, IA (SUX) with a layover in Washington Dulles Intl. (IAD), starting from around $313. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway)?
To find a cheap flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway)?
The earliest flight from Buffalo Niagara International Airport (BUF) to Sioux Gateway (SUX) typically departs at around 6:00 AM, operated by Delta and United Airlines. This seasonal service can help you start your day early and maximize your time in Sioux City. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway)?
When flying from Buffalo, NY (BUF) to Sioux City, IA (SUX), the most popular departure times are in the early afternoon, from 12pm to 3pm. About 35% of passengers prefer this time window. Many major carriers, including United Airlines and Delta Air Lines, offer flights during this window. This timing is convenient for travelers who want to enjoy their morning before heading out.
How long does it take to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway)?
Flights from BUF to SUX with one stop typically take around 6 hours 20 minutes, covering approximately 896 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway)?
Select the "Business class" and "First class" filters when looking for BUF to SUX flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway) flight with Expedia?
It's easy to earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Sioux City from Buffalo Niagara Intl. (BUF)?
From Buffalo Niagara Intl. (BUF), you can fly into Sioux Gateway (SUX) to reach Sioux City. Some flights may connect through major hubs like Washington Dulles Intl. (IAD), O'Hare Intl. (ORD), Liberty Intl. (EWR) before reaching Sioux City. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway) at the last minute?
Typically, booking a last minute flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway) flight and hotel package?
Securing a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway)?
If you booked your Buffalo, NY (BUF-Buffalo Niagara Intl.) to Sioux City, IA (SUX-Sioux Gateway) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

*Flight schedules are subject to change.

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*Available to One Key members.