$337 Cheap Flights from Sioux Falls (FSD) to Wilmington (ILG)

View $337 flight on Sat, Nov 1, 2025Opens in a new window

Popular airlines from Sioux Falls Regional Airport (FSD) to Wilmington, DE (ILG-New Castle)

Cheap Flights from Sioux Falls to Wilmington (FSD-ILG)

Prices were available within the past 7 days and start at $337 for one-way flights and $388 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Nov 5 - Mon, Nov 10
FSD
Sioux Falls
ILG
Wilmington
$388 Roundtrip, found 3 days ago
$388
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 5 from Sioux Falls to Wilmington, returning Mon, Nov 10, priced at $388 found 3 days ago
American Airlines
Wed, Nov 5 - Wed, Nov 12
FSD
Sioux Falls
ILG
Wilmington
$461 Roundtrip, found 3 days ago
$461
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 5 from Sioux Falls to Wilmington, returning Wed, Nov 12, priced at $461 found 3 days ago
American Airlines
Wed, Nov 5 - Mon, Nov 10
FSD
Sioux Falls
ILG
Wilmington
$468 Roundtrip, found 3 days ago
$468
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 5 from Sioux Falls to Wilmington, returning Mon, Nov 10, priced at $468 found 3 days ago
American Airlines
Tue, Nov 4 - Wed, Nov 12
FSD
Sioux Falls
ILG
Wilmington
$494 Roundtrip, found 3 days ago
$494
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Nov 4 from Sioux Falls to Wilmington, returning Wed, Nov 12, priced at $494 found 3 days ago
American Airlines
Sun, Nov 2 - Wed, Nov 12
FSD
Sioux Falls
ILG
Wilmington
$495 Roundtrip, found 3 days ago
$495
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Nov 2 from Sioux Falls to Wilmington, returning Wed, Nov 12, priced at $495 found 3 days ago
American Airlines
Sat, Nov 8 - Wed, Nov 12
FSD
Sioux Falls
ILG
Wilmington
$509 Roundtrip, found 3 days ago
$509
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Nov 8 from Sioux Falls to Wilmington, returning Wed, Nov 12, priced at $509 found 3 days ago
American Airlines
Wed, Nov 5 - Tue, Nov 11
FSD
Sioux Falls
ILG
Wilmington
$549 Roundtrip, found 3 days ago
$549
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 5 from Sioux Falls to Wilmington, returning Tue, Nov 11, priced at $549 found 3 days ago
American Airlines
Wed, Nov 5 - Mon, Nov 10
FSD
Sioux Falls
ILG
Wilmington
$560 Roundtrip, found 3 days ago
$560
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 5 from Sioux Falls to Wilmington, returning Mon, Nov 10, priced at $560 found 3 days ago
American Airlines
Fri, Nov 7 - Wed, Nov 12
FSD
Sioux Falls
ILG
Wilmington
$561 Roundtrip, found 3 days ago
$561
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Nov 7 from Sioux Falls to Wilmington, returning Wed, Nov 12, priced at $561 found 3 days ago
American Airlines
Wed, Nov 5 - Mon, Nov 10
FSD
Sioux Falls
ILG
Wilmington
$568 Roundtrip, found 3 days ago
$568
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 5 from Sioux Falls to Wilmington, returning Mon, Nov 10, priced at $568 found 3 days ago

Alternative airports near Wilmington

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

Select flight to Philadelphia Intl. PHL. Cheapest option available. Average driving time to city center is 28 minutes. Flights from $274
PHL
Philadelphia Intl.
Cheapest
Average driving time to city center28 min
Flights from $274
Flights from Sioux Falls (FSD) to Wilmington (ILG)
Origin airport
Sioux Falls Regional
Destination airport
New Castle
Roundtrip price
$388
Distance
1120 mi

Sioux Falls to Wilmington Flights

The cheapest times to fly from Sioux Falls to Wilmington

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 Sioux Falls to Wilmington are during the month of November. You can find some of the cheapest flights from Sioux Falls to Wilmington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sioux Falls to Wilmington

Sunday is one of the best days to book for cheap flights from Sioux Falls to Wilmington: 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 Sioux Falls to Wilmington

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 Sioux Falls to Wilmington in 2025. You can also book with separate airlines for your outbound and return journeys, from $337 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 Sioux Falls to Wilmington 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 Sioux Falls to Wilmington 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 Sioux Falls Regional Airport (FSD) to Wilmington, DE (ILG-New Castle) cost?
Snag a cheap one-way flight from $337 or cheap return flight from $388 from Sioux Falls Regional Airport (FSD) to Wilmington, DE (ILG-New Castle) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Sioux Falls Regional Airport (FSD) to Wilmington, DE (ILG-New Castle)?
Traveling in November may help you find better deals, as it's the cheapest month for flights between FSD and ILG. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Sioux Falls Regional Airport (FSD) to Wilmington, DE (ILG-New Castle)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest FSD to ILG flight.
How many flights per day from Sioux Falls Regional Airport (FSD) to Wilmington, DE (ILG-New Castle)?
Direct flights from Sioux Falls Regional Airport (FSD) to Wilmington, DE (ILG-New Castle) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from FSD to ILG?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary based on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sioux Falls Regional Airport (FSD) to Wilmington, DE (ILG-New Castle)?
Book a flight from Sioux Falls Regional Airport (FSD) to Wilmington, DE (ILG-New Castle) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Sioux Falls Regional Airport (FSD) to Wilmington, DE (ILG-New Castle) last-minute?
Holding off until just before your trip to book a ticket from FSD to ILG often results in higher prices. While you may come across some last-minute offers, they aren't always guaranteed. Be flexible with your itinerary for the best chance of scoring a bargain.
Can I cancel or change the date of my flight from Sioux Falls Regional Airport (FSD) to Wilmington, DE (ILG-New Castle)?
You can usually reschedule or cancel your FSD to ILG flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.