$371 Cheap Flights from Wilmington (ILM) to Santa Rosa (STS)

View $371 flight on Wed, Feb 25, 2026Opens in a new window

Popular airlines from Wilmington Intl. Airport (ILM) to Santa Rosa, CA (STS-Sonoma County)

Cheap Flights from Wilmington to Santa Rosa (ILM-STS)

Prices were available within the past 7 days and start at $371 for one-way flights and $661 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Feb 25 - Wed, Mar 4
ILM
Wilmington
STS
Santa Rosa
$661 Roundtrip, found 4 days ago
$661
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Feb 25 from Wilmington to Santa Rosa, returning Wed, Mar 4, priced at $661 found 4 days ago
American Airlines
Wed, Feb 25 - Wed, Mar 4
ILM
Wilmington
STS
Santa Rosa
$741 Roundtrip, found 4 days ago
$741
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Feb 25 from Wilmington to Santa Rosa, returning Wed, Mar 4, priced at $741 found 4 days ago
American Airlines
Wed, Feb 25 - Wed, Mar 4
ILM
Wilmington
STS
Santa Rosa
$761 Roundtrip, found 4 days ago
$761
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Feb 25 from Wilmington to Santa Rosa, returning Wed, Mar 4, priced at $761 found 4 days ago
American Airlines
Mon, Feb 23 - Tue, Mar 3
ILM
Wilmington
STS
Santa Rosa
$774 Roundtrip, found 4 days ago
$774
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Feb 23 from Wilmington to Santa Rosa, returning Tue, Mar 3, priced at $774 found 4 days ago
American Airlines
Wed, Feb 25 - Wed, Mar 4
ILM
Wilmington
STS
Santa Rosa
$791 Roundtrip, found 4 days ago
$791
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Feb 25 from Wilmington to Santa Rosa, returning Wed, Mar 4, priced at $791 found 4 days ago
American Airlines
Tue, Feb 24 - Thu, Mar 5
ILM
Wilmington
STS
Santa Rosa
$801 Roundtrip, found 4 days ago
$801
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Feb 24 from Wilmington to Santa Rosa, returning Thu, Mar 5, priced at $801 found 4 days ago
American Airlines
Mon, Feb 23 - Mon, Mar 2
ILM
Wilmington
STS
Santa Rosa
$819 Roundtrip, found 4 days ago
$819
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Feb 23 from Wilmington to Santa Rosa, returning Mon, Mar 2, priced at $819 found 4 days ago
American Airlines
Sat, Feb 28 - Fri, Mar 6
ILM
Wilmington
STS
Santa Rosa
$833 Roundtrip, found 4 days ago
$833
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Feb 28 from Wilmington to Santa Rosa, returning Fri, Mar 6, priced at $833 found 4 days ago
American Airlines
Wed, Feb 25 - Wed, Mar 4
ILM
Wilmington
STS
Santa Rosa
$841 Roundtrip, found 4 days ago
$841
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Feb 25 from Wilmington to Santa Rosa, returning Wed, Mar 4, priced at $841 found 4 days ago
American Airlines
Sun, Feb 22 - Tue, Mar 3
ILM
Wilmington
STS
Santa Rosa
$844 Roundtrip, found 4 days ago
$844
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Feb 22 from Wilmington to Santa Rosa, returning Tue, Mar 3, priced at $844 found 4 days ago
Flights from Wilmington (ILM) to Santa Rosa (STS)
Origin airport
Wilmington Intl.
Destination airport
Sonoma County
Airlines serving
American Airlines
Roundtrip price
$661
Distance
2489 mi

Wilmington to Santa Rosa Flights

The cheapest times to fly from Wilmington to Santa Rosa

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

 

The best time to book a flight from Wilmington to Santa Rosa

Sunday is one of the best days to book for cheap flights from Wilmington to Santa Rosa: 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 Santa Rosa

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 Santa Rosa in 2026. You can also book with separate airlines for your outbound and return journeys, from $371 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 Santa Rosa 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 Santa Rosa 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 Wilmington Intl. Airport (ILM) to Sonoma County Airport (STS) cost?
Snag a cheap one-way flight from $371 or cheap return flight from $661 from Wilmington Intl. Airport (ILM) to Sonoma County Airport (STS) 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 Sonoma County Airport (STS)?
February is the cheapest month to fly from ILM to STS. Avoiding peak travel times is often the key to finding better fares.
What is the cheapest airline that flies from Wilmington Intl. Airport (ILM) to Sonoma County Airport (STS)?
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 ILM to STS flight.
How many flights per day from Wilmington Intl. Airport (ILM) to Sonoma County Airport (STS)?
Nonstop flights from Wilmington Intl. Airport (ILM) to Sonoma County Airport (STS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ILM to STS?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can vary depending on the airline, season 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 Wilmington Intl. Airport (ILM) to Sonoma County Airport (STS)?
Select a flight from Wilmington Intl. Airport (ILM) to Sonoma County Airport (STS) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this 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 Wilmington Intl. Airport (ILM) to Sonoma County Airport (STS) last-minute?
Last-minute bookings from ILM to STS are usually more expensive. To secure the lowest rates, start searching for flights as early as possible. That being said, if you're flexible with your travel plans, you may land a cheap ticket right before you leave.
Is it cheaper to book an ILM to STS flight and hotel package?
You'll generally save money by securing an ILM to STS flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. After selecting your preferred flights and accommodations, consider other add-ons like car rentals, activities and tours.
Can I cancel or change the date of my flight from Wilmington Intl. Airport (ILM) to Sonoma County Airport (STS)?
In most instances, you're able to cancel or reschedule your ILM to STS flight. However, additional fees may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you want more information, go to our Customer Service portal.

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*Available to One Key members.