$274 Cheap Flights from Wilmington (ILG) to San Francisco (SFO)

View $274 flight on Fri, Oct 17, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $274 for one-way flights and $257 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Sep 10 - Wed, Sep 17
ILG
Wilmington
SFO
San Francisco
$257 Roundtrip, found 5 days ago
$257
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Sep 10 from Wilmington to San Francisco, returning Wed, Sep 17, priced at $257 found 5 days ago
American Airlines
Wed, Sep 10 - Wed, Sep 17
ILG
Wilmington
SFO
San Francisco
$273 Roundtrip, found 5 days ago
$273
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Sep 10 from Wilmington to San Francisco, returning Wed, Sep 17, priced at $273 found 5 days ago
American Airlines
Wed, Sep 10 - Sat, Oct 4
ILG
Wilmington
SFO
San Francisco
$289 Roundtrip, found 10 hours ago
$289
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Wed, Sep 10 from Wilmington to San Francisco, returning Sat, Oct 4, priced at $289 found 10 hours ago
American Airlines
Wed, Sep 10 - Sat, Oct 4
ILG
Wilmington
SFO
San Francisco
$299 Roundtrip, found 10 hours ago
$299
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Wed, Sep 10 from Wilmington to San Francisco, returning Sat, Oct 4, priced at $299 found 10 hours ago
American Airlines
Wed, Sep 10 - Wed, Sep 17
ILG
Wilmington
SFO
San Francisco
$305 Roundtrip, found 5 days ago
$305
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Sep 10 from Wilmington to San Francisco, returning Wed, Sep 17, priced at $305 found 5 days ago
American Airlines
Wed, Sep 10 - Sat, Oct 4
ILG
Wilmington
SFO
San Francisco
$309 Roundtrip, found 10 hours ago
$309
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Wed, Sep 10 from Wilmington to San Francisco, returning Sat, Oct 4, priced at $309 found 10 hours ago
American Airlines
Wed, Sep 24 - Mon, Sep 29
ILG
Wilmington
SFO
San Francisco
$311 Roundtrip, found 1 day ago
$311
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Sep 24 from Wilmington to San Francisco, returning Mon, Sep 29, priced at $311 found 1 day ago
American Airlines
Thu, Oct 23 - Sat, Oct 25
ILG
Wilmington
SFO
San Francisco
$319 Roundtrip, found 18 hours ago
$319
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Thu, Oct 23 from Wilmington to San Francisco, returning Sat, Oct 25, priced at $319 found 18 hours ago
American Airlines
Wed, Sep 10 - Sat, Oct 4
ILG
Wilmington
SFO
San Francisco
$321 Roundtrip, found 10 hours ago
$321
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Wed, Sep 10 from Wilmington to San Francisco, returning Sat, Oct 4, priced at $321 found 10 hours ago
American Airlines
Thu, Oct 23 - Sat, Oct 25
ILG
Wilmington
SFO
San Francisco
$329 Roundtrip, found 18 hours ago
$329
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Thu, Oct 23 from Wilmington to San Francisco, returning Sat, Oct 25, priced at $329 found 18 hours ago

Alternative airports near San Francisco

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

Select flight to Norman Y. Mineta San Jose Intl. SJC. Cheapest option available. Average driving time to city center is 50 minutes. Flights from $468
SJC
Norman Y. Mineta San Jose Intl.
Cheapest
Average driving time to city center50 min
Flights from $468
Flights from Wilmington (ILG) to San Francisco (SFO)
Origin airport
New Castle
Destination airport
San Francisco Intl.
Airlines serving
American Airlines
Roundtrip price
$257
Distance
2500 mi

Wilmington to San Francisco Flights

The cheapest times to fly from Wilmington to San Francisco

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

 

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

Sunday is one of the best days to book for cheap flights from Wilmington to San Francisco: 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 San Francisco

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 San Francisco in 2025. You can also book with separate airlines for your outbound and return journeys, from $274 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 San Francisco 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 San Francisco 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, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO) cost?
Lock in a cheap one-way flight from $274 or cheap return flight from $257 from Wilmington, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Wilmington, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO)?
September is the most affordable month to fly from ILG to SFO. Traveling outside of peak seasons is often the key to finding better fares.
Which airlines fly direct from Wilmington, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO)?
You can't fly directly from Wilmington, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO). However, you can find other airports offering nonstop flights. Board your plane at Philadelphia Intl. Airport (PHL) and fly straight to San Francisco without any detours.
What is the cheapest airline that flies from Wilmington, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest ILG to SFO flight.
How many flights per day from Wilmington, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO)?
Nonstop flights from Wilmington, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ILG to SFO?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*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, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO)?
To avoid potential delays on the Wilmington, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO) route, aim to travel before 3 PM. Later departures have a 22% higher chance of being 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, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO) last-minute?
Booking your plane ticket from ILG to SFO shortly before your getaway is generally more expensive. But if you're flexible with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book an ILG to SFO flight and hotel package?
Compared with arranging hotels and flights separately, booking an ILG to SFO flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place takes the hassle out of planning your trip. Just secure your flights and select from our extensive range of hotels, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Wilmington, DE (ILG-New Castle) to San Francisco Intl. Airport (SFO)?
You can usually reschedule or cancel your ILG to SFO flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.