$184 Cheap Flights from St. Thomas (STT) to Sioux Falls (FSD)

View $184 flight on Wed, Feb 17, 2027Opens in a new window

Popular airlines from Cyril E. King Airport (STT) to Sioux Falls Regional Airport (FSD)

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Cheap Flights from St. Thomas to Sioux Falls (STT-FSD)

Prices were available within the past 7 days and start at $184 for one-way flights and $575 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Apr 16 - Tue, Apr 21
STT
St. Thomas
FSD
Sioux Falls
$575 Roundtrip, found 10 hours ago
$575
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Thu, Apr 16 from St. Thomas to Sioux Falls, returning Tue, Apr 21, priced at $575 found 10 hours ago
United
Thu, Apr 16 - Tue, Apr 21
STT
St. Thomas
FSD
Sioux Falls
$575 Roundtrip, found 10 hours ago
$575
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Apr 16 from St. Thomas to Sioux Falls, returning Tue, Apr 21, priced at $575 found 10 hours ago
American Airlines
Thu, Apr 16 - Tue, Apr 21
STT
St. Thomas
FSD
Sioux Falls
$580 Roundtrip, found 10 hours ago
$580
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Thu, Apr 16 from St. Thomas to Sioux Falls, returning Tue, Apr 21, priced at $580 found 10 hours ago
Delta
Thu, Apr 16 - Tue, Apr 21
STT
St. Thomas
FSD
Sioux Falls
$585 Roundtrip, found 10 hours ago
$585
Roundtrip
found 10 hours ago
Select Delta flight, departing Thu, Apr 16 from St. Thomas to Sioux Falls, returning Tue, Apr 21, priced at $585 found 10 hours ago
American Airlines
Tue, Jul 28 - Tue, Aug 11
STT
St. Thomas
FSD
Sioux Falls
$594 Roundtrip, found 11 hours ago
$594
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Tue, Jul 28 from St. Thomas to Sioux Falls, returning Tue, Aug 11, priced at $594 found 11 hours ago
United
Thu, Apr 16 - Tue, Apr 21
STT
St. Thomas
FSD
Sioux Falls
$620 Roundtrip, found 10 hours ago
$620
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Apr 16 from St. Thomas to Sioux Falls, returning Tue, Apr 21, priced at $620 found 10 hours ago
United
Thu, Apr 16 - Sun, Apr 19
STT
St. Thomas
FSD
Sioux Falls
$630 Roundtrip, found 3 days ago
$630
Roundtrip
found 3 days ago
Select United flight, departing Thu, Apr 16 from St. Thomas to Sioux Falls, returning Sun, Apr 19, priced at $630 found 3 days ago
American Airlines
Thu, Apr 16 - Tue, Apr 21
STT
St. Thomas
FSD
Sioux Falls
$635 Roundtrip, found 10 hours ago
$635
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Thu, Apr 16 from St. Thomas to Sioux Falls, returning Tue, Apr 21, priced at $635 found 10 hours ago
Delta
Thu, Apr 16 - Tue, Apr 21
STT
St. Thomas
FSD
Sioux Falls
$640 Roundtrip, found 10 hours ago
$640
Roundtrip
found 10 hours ago
Select Delta flight, departing Thu, Apr 16 from St. Thomas to Sioux Falls, returning Tue, Apr 21, priced at $640 found 10 hours ago
Cape Air
Tue, Jul 28 - Tue, Aug 11
STT
St. Thomas
FSD
Sioux Falls
$993 Roundtrip, found 11 hours ago
$993
Roundtrip
found 11 hours ago
Select Cape Air flight, departing Tue, Jul 28 from St. Thomas to Sioux Falls, returning Tue, Aug 11, priced at $993 found 11 hours ago

Frequently asked questions

How much does a flight from St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional) cost?
You can find cheap one-way flights from $184 and cheap return flights from $575 St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional) with Expedia. One-way flights generally range between $467 and $948, and roundtrip flights usually range from $749 to $4243. 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 St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional) 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 St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
The cheapest month to fly from STT to FSD is April 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 St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
Enter STT to FSD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
United is one of the cheapest airlines offering connecting flights from Cyril E. King (STT) to Sioux Falls Regional (FSD), with round-trip tickets starting from around $749 with a layover in Washington Dulles Intl. (IAD). 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 St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
To find a cheap flight from St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional), 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 St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
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 St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
The earliest flight from St. Thomas (STT) to Sioux Falls (FSD) usually departs at around 9:10 AM, operated by 9K and United. This seasonal service is available in December, providing a late morning option for your travels. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
You'll usually find the most flights from Cyril E. King (STT) to Sioux Falls Regional (FSD) on a Wednesday, with around 6 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta and American Airlines.
What are the most popular departure times for flights from St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
For flights from Cyril E. King Airport (STT) in St. Thomas to Sioux Falls Regional Airport (FSD), the most popular departure times are in the early afternoon, from 12pm to 3pm. About 53% of passengers prefer this time window. Many major carriers, including United Airlines, American Airlines, and Delta, offer flights during this window. This timing works well because it allows you to travel after lunch and arrive in Sioux Falls in the evening.
How long does it take to fly from St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
Flying from STT to FSD with a connection usually takes about 9 hours 20 minutes, traveling roughly 2,538 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 St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
First class seats are offered on the STT to FSD route with Delta Air Lines and United Airlines.
How do I earn miles on a St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional) flight with Expedia?
It's easy to earn miles on a St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional) 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 Falls from Cyril E. King (STT)?
If you're planning to travel to Sioux Falls from Cyril E. King (STT), you can fly into Sioux Falls Regional (FSD) Some flights may connect through major hubs like Washington Dulles Intl. (IAD), Miami Intl. (MIA), Charlotte-Douglas Intl. (CLT) before reaching Sioux Falls. 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 St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional) at the last minute?
Typically, booking a last minute flight from St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional) 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 St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional) flight and hotel package?
Securing a St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional) Sioux Falls Vacation Packages 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 St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
If you booked your St. Thomas (STT-Cyril E. King) to Sioux Falls, SD (FSD-Sioux Falls Regional) 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.

Travel information

Origin airport
Cyril E. King
Destination airport
Sioux Falls Regional
Airlines serving
American Airlines, Delta, United
Roundtrip price
$575
Distance
2537 mi

*Flight schedules are subject to change.

*Available to One Key members.

 

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