$304 Cheap Flights from San Francisco (SFO) to Wilmington (ILG)

View $304 flight on Wed, Nov 5, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Wilmington, DE (ILG-New Castle)

Cheap Flights from San Francisco to Wilmington (SFO-ILG)

Prices were available within the past 7 days and start at $304 for one-way flights and $331 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Sep 24 - Wed, Oct 1
SFO
San Francisco
ILG
Wilmington
$331 Roundtrip, found 2 hours ago
$331
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Wed, Sep 24 from San Francisco to Wilmington, returning Wed, Oct 1, priced at $331 found 2 hours ago
American Airlines
Wed, Sep 24 - Wed, Oct 1
SFO
San Francisco
ILG
Wilmington
$339 Roundtrip, found 2 hours ago
$339
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Wed, Sep 24 from San Francisco to Wilmington, returning Wed, Oct 1, priced at $339 found 2 hours ago
American Airlines
Wed, Sep 24 - Wed, Oct 1
SFO
San Francisco
ILG
Wilmington
$349 Roundtrip, found 2 hours ago
$349
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Wed, Sep 24 from San Francisco to Wilmington, returning Wed, Oct 1, priced at $349 found 2 hours ago
American Airlines
Wed, Sep 24 - Wed, Oct 1
SFO
San Francisco
ILG
Wilmington
$353 Roundtrip, found 2 hours ago
$353
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Wed, Sep 24 from San Francisco to Wilmington, returning Wed, Oct 1, priced at $353 found 2 hours ago
American Airlines
Wed, Sep 24 - Wed, Oct 1
SFO
San Francisco
ILG
Wilmington
$375 Roundtrip, found 2 hours ago
$375
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Wed, Sep 24 from San Francisco to Wilmington, returning Wed, Oct 1, priced at $375 found 2 hours ago
American Airlines
Wed, Sep 24 - Wed, Oct 1
SFO
San Francisco
ILG
Wilmington
$379 Roundtrip, found 2 hours ago
$379
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Wed, Sep 24 from San Francisco to Wilmington, returning Wed, Oct 1, priced at $379 found 2 hours ago
American Airlines
Sun, Sep 21 - Sun, Sep 28
SFO
San Francisco
ILG
Wilmington
$401 Roundtrip, found 2 days ago
$401
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Sep 21 from San Francisco to Wilmington, returning Sun, Sep 28, priced at $401 found 2 days ago
American Airlines
Tue, Nov 4 - Sat, Nov 15
SFO
San Francisco
ILG
Wilmington
$418 Roundtrip, found 2 days ago
$418
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Nov 4 from San Francisco to Wilmington, returning Sat, Nov 15, priced at $418 found 2 days ago
American Airlines
Sat, Nov 1 - Sat, Nov 15
SFO
San Francisco
ILG
Wilmington
$423 Roundtrip, found 2 days ago
$423
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Nov 1 from San Francisco to Wilmington, returning Sat, Nov 15, priced at $423 found 2 days ago
American Airlines
Sat, Nov 8 - Tue, Nov 25
SFO
San Francisco
ILG
Wilmington
$430 Roundtrip, found 2 days ago
$430
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Nov 8 from San Francisco to Wilmington, returning Tue, Nov 25, priced at $430 found 2 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 $260
PHL
Philadelphia Intl.
Cheapest
Average driving time to city center28 min
Flights from $260
Flights from San Francisco (SFO) to Wilmington (ILG)
Origin airport
San Francisco Intl.
Destination airport
New Castle
Roundtrip price
$331
Distance
2500 mi

San Francisco to Wilmington Flights

The cheapest times to fly from San Francisco 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 San Francisco to Wilmington are during the month of September. You can find some of the cheapest flights from San Francisco to Wilmington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Wilmington

Sunday is one of the best days to book for cheap flights from San Francisco 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 San Francisco 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 San Francisco to Wilmington in 2025. You can also book with separate airlines for your outbound and return journeys, from $304 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 San Francisco 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 San Francisco 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 San Francisco Intl. Airport (SFO) to Wilmington, DE (ILG-New Castle) cost?
Secure a cheap one-way flight from $304 or cheap return flight from $331 from San Francisco Intl. Airport (SFO) to Wilmington, DE (ILG-New Castle) 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 San Francisco Intl. Airport (SFO) to Wilmington, DE (ILG-New Castle)?
Planning your getaway for September is a good way to save, as it's the cheapest month for flights between SFO and ILG. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Wilmington, DE (ILG-New Castle)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SFO to ILG flight.
How many flights per day from San Francisco Intl. Airport (SFO) to Wilmington, DE (ILG-New Castle)?
Direct flights from San Francisco Intl. Airport (SFO) to Wilmington, DE (ILG-New Castle) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SFO to ILG?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the time of year, 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 San Francisco Intl. Airport (SFO) to Wilmington, DE (ILG-New Castle)?
To reach Wilmington, DE (ILG-New Castle) on time, select a flight that leaves San Francisco Intl. Airport (SFO) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 San Francisco Intl. Airport (SFO) to Wilmington, DE (ILG-New Castle) last-minute?
Last-minute fares from SFO to ILG are generally more expensive. To secure the best rates, start looking for flights well ahead of time. That said, if you're flexible with your travel dates, it's possible to score a cheap ticket right before you leave.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Wilmington, DE (ILG-New Castle)?
Generally, it's possible to reschedule or cancel your SFO to ILG flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.