$198 Cheap Flights from Wilmington (ILM) to St. Louis (STL)

View $198 flight on Tue, Dec 30, 2025Opens in a new window

Popular airlines from Wilmington Intl. Airport (ILM) to St. Louis Lambert Intl. Airport (STL)

Cheap Flights from Wilmington to St. Louis (ILM-STL)

Prices were available within the past 7 days and start at $198 for one-way flights and $201 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Dec 9 - Wed, Dec 17
ILM
Wilmington
STL
St. Louis
$201 Roundtrip, found 11 hours ago
$201
Roundtrip
found 11 hours ago
Select Delta flight, departing Tue, Dec 9 from Wilmington to St. Louis, returning Wed, Dec 17, priced at $201 found 11 hours ago
American Airlines
Sat, Feb 28 - Wed, Mar 4
ILM
Wilmington
STL
St. Louis
$206 Roundtrip, found 1 day ago
$206
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Feb 28 from Wilmington to St. Louis, returning Wed, Mar 4, priced at $206 found 1 day ago
American Airlines
Thu, Dec 25 - Tue, Dec 30
ILM
Wilmington
STL
St. Louis
$221 Roundtrip, found 2 days ago
$221
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Dec 25 from Wilmington to St. Louis, returning Tue, Dec 30, priced at $221 found 2 days ago
Delta
Tue, Dec 9 - Wed, Dec 24
ILM
Wilmington
STL
St. Louis
$230 Roundtrip, found 11 hours ago
$230
Roundtrip
found 11 hours ago
Select Delta flight, departing Tue, Dec 9 from Wilmington to St. Louis, returning Wed, Dec 24, priced at $230 found 11 hours ago
Delta
Mon, Nov 24 - Wed, Dec 3
ILM
Wilmington
STL
St. Louis
$240 Roundtrip, found 6 hours ago
$240
Roundtrip
found 6 hours ago
Select Delta flight, departing Mon, Nov 24 from Wilmington to St. Louis, returning Wed, Dec 3, priced at $240 found 6 hours ago
United
Sat, Dec 6 - Mon, Dec 8
ILM
Wilmington
STL
St. Louis
$249 Roundtrip, found 1 day ago
$249
Roundtrip
found 1 day ago
Select United flight, departing Sat, Dec 6 from Wilmington to St. Louis, returning Mon, Dec 8, priced at $249 found 1 day ago
United
Sat, Dec 6 - Mon, Dec 8
ILM
Wilmington
STL
St. Louis
$254 Roundtrip, found 1 day ago
$254
Roundtrip
found 1 day ago
Select United flight, departing Sat, Dec 6 from Wilmington to St. Louis, returning Mon, Dec 8, priced at $254 found 1 day ago
Delta
Tue, Nov 18 - Mon, Nov 24
ILM
Wilmington
STL
St. Louis
$258 Roundtrip, found 3 hours ago
$258
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Nov 18 from Wilmington to St. Louis, returning Mon, Nov 24, priced at $258 found 3 hours ago
Delta
Sat, Jan 10 - Sat, Jan 17
ILM
Wilmington
STL
St. Louis
$259 Roundtrip, found 1 day ago
$259
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Jan 10 from Wilmington to St. Louis, returning Sat, Jan 17, priced at $259 found 1 day ago
Delta
Tue, Dec 30 - Sat, Jan 17
ILM
Wilmington
STL
St. Louis
$260 Roundtrip, found 4 days ago
$260
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Dec 30 from Wilmington to St. Louis, returning Sat, Jan 17, priced at $260 found 4 days ago

Find the cheapest month to fly from Wilmington (ILM) to St. Louis (STL)

April is typically the cheapest month to fly

From $198 - $539 per traveler.

Alternative airports near St. Louis

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

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $336
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $336

Frequently asked questions

How much does a flight from Wilmington Intl. Airport (ILM) to Lambert-St. Louis Intl. Airport (STL) cost?
Grab a cheap one-way flight from $198 or cheap return flight from $201 from Wilmington Intl. Airport (ILM) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Wilmington Intl. Airport (ILM) to Lambert-St. Louis Intl. Airport (STL)?
Traveling in December is a great way to save, as it's the cheapest month for flights between ILM and STL. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Wilmington Intl. Airport (ILM) to Lambert-St. Louis Intl. Airport (STL)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest ILM to STL flight.
How many flights per day from Wilmington Intl. Airport (ILM) to Lambert-St. Louis Intl. Airport (STL)?
You'll need to catch a flight with a layover when traveling from Wilmington Intl. Airport (ILM) to Lambert-St. Louis Intl. Airport (STL). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from ILM to STL?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Wilmington Intl. Airport (ILM) to Lambert-St. Louis Intl. Airport (STL)?
To avoid potential delays on the Wilmington Intl. Airport (ILM) to Lambert-St. Louis Intl. Airport (STL) route, fly before 3 PM. Later flights have a 22% higher chance of cancellation.**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 Wilmington Intl. Airport (ILM) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute fares from ILM to STL are usually more expensive. To secure the lowest prices, start looking for flights as soon as possible. That being said, if you're flexible with your travel plans, you may find a cheap fare right before your journey.
Is it cheaper to book an ILM to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking an ILM to STL flight and hotel package with Expedia could lead to significant savings. Better still, having it all in one place will take the stress out of planning your trip. Just pick your flights and select from our extensive range of hotels, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Wilmington Intl. Airport (ILM) to Lambert-St. Louis Intl. Airport (STL)?
In most instances, you can modify or cancel your ILM to STL flight. However, there may be additional fees, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need further details, head to our Customer Service portal.

Travel information

Origin airport
Wilmington Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$200
Distance
756 mi

Book with confidence

Wilmington to St. Louis Flights

The cheapest times to fly from Wilmington to St. Louis

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

 

The best time to book a flight from Wilmington to St. Louis

Sunday is one of the best days to book for cheap flights from Wilmington to St. Louis: 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 Wilmington to St. Louis

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 Wilmington to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $198 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 Wilmington to St. Louis 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 Wilmington to St. Louis 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.

 

Wilmington to St. Louis Flights

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*Available to One Key members.