$113 Cheap Flights from Wilmington (ILG) to San Juan (SJU)

View $113 flight on Mon, Oct 20, 2025Opens in a new window

Popular airlines from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU)

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Cheap Flights from Wilmington to San Juan (ILG-SJU)

Prices were available within the past 7 days and start at $113 for one-way flights and $221 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Jan 26 - Tue, Jan 27
ILG
Wilmington
SJU
San Juan
$221 Roundtrip, found 5 days ago
$221
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Jan 26 from Wilmington to San Juan, returning Tue, Jan 27, priced at $221 found 5 days ago
American Airlines
Wed, Oct 22 - Wed, Oct 29
ILG
Wilmington
SJU
San Juan
$226 Roundtrip, found 9 hours ago
$226
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Wed, Oct 22 from Wilmington to San Juan, returning Wed, Oct 29, priced at $226 found 9 hours ago
American Airlines
Wed, Oct 22 - Wed, Oct 29
ILG
Wilmington
SJU
San Juan
$231 Roundtrip, found 3 days ago
$231
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Oct 22 from Wilmington to San Juan, returning Wed, Oct 29, priced at $231 found 3 days ago
American Airlines
Mon, Jan 26 - Tue, Jan 27
ILG
Wilmington
SJU
San Juan
$281 Roundtrip, found 5 days ago
$281
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Jan 26 from Wilmington to San Juan, returning Tue, Jan 27, priced at $281 found 5 days ago
American Airlines
Wed, Oct 22 - Wed, Oct 29
ILG
Wilmington
SJU
San Juan
$286 Roundtrip, found 9 hours ago
$286
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Wed, Oct 22 from Wilmington to San Juan, returning Wed, Oct 29, priced at $286 found 9 hours ago
American Airlines
Tue, Nov 4 - Wed, Nov 5
ILG
Wilmington
SJU
San Juan
$290 Roundtrip, found 15 hours ago
$290
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Tue, Nov 4 from Wilmington to San Juan, returning Wed, Nov 5, priced at $290 found 15 hours ago
American Airlines
Wed, Oct 22 - Wed, Oct 29
ILG
Wilmington
SJU
San Juan
$291 Roundtrip, found 3 days ago
$291
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Oct 22 from Wilmington to San Juan, returning Wed, Oct 29, priced at $291 found 3 days ago
American Airlines
Sat, Nov 29 - Fri, Dec 5
ILG
Wilmington
SJU
San Juan
$295 Roundtrip, just found
$295
Roundtrip
just found
Select American Airlines flight, departing Sat, Nov 29 from Wilmington to San Juan, returning Fri, Dec 5, priced at $295 just found
American Airlines
Thu, Jan 29 - Fri, Jan 30
ILG
Wilmington
SJU
San Juan
$301 Roundtrip, found 5 days ago
$301
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Jan 29 from Wilmington to San Juan, returning Fri, Jan 30, priced at $301 found 5 days ago
American Airlines
Sun, Feb 8 - Sun, Feb 15
ILG
Wilmington
SJU
San Juan
$309 Roundtrip, just found
$309
Roundtrip
just found
Select American Airlines flight, departing Sun, Feb 8 from Wilmington to San Juan, returning Sun, Feb 15, priced at $309 just found

Frequently asked questions

How much does a flight from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU) cost?
Lock in a cheap one-way flight from $113 or cheap return flight from $221 from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU) 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, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU)?
The cheapest month to fly from ILG to SJU is January, when demand is low. Off-peak months are usually when airlines offer lower prices between these airports.
Which airlines fly direct from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU)?
You can fly straight from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU) on an Avelo Airlines flight.
What is the cheapest airline that flies from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU)?
To find the cheapest airline that'll fly you from ILG to SJU, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU)?
On average you can take your pick of 2 direct flights each week from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU). To increase your travel options, consider a flight with a layover. Enter your details on Expedia and then filter your search results to show one or two stops.
What are the most popular departure times for flights from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU)?
The 6 AM departures from ILG to SJU are the top choice for many travelers. Greater demand means you'll likely pay more for these departures. If you want to save on your trip, choose a less crowded time to fly.
What day of the week has the most flights from ILG to SJU?
If you depart on a Saturday, you'll get the largest range of options for flights from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU).
What is the earliest flight from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU)?
Wilmington, DE (ILG-New Castle)'s earliest flight to Luis Munoz Marin Intl. Airport (SJU) takes off at approximately 6:30AM UTC-5. With a total travel time of 3h 50m, you'll land at around 11:20AM UTC-4.
How long does it take to fly from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU)?
Typically, it takes 3 hours and 50 minutes to cover the 1,600 mi from ILG to SJU.
What airline has the least delays from ILG to SJU?
With 81% of journeys usually arriving on schedule, Avelo Airlines has the best on-time performance for direct flights from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU). To monitor your flight status and receive notifications if anything changes, head to the Expedia App.
What is the best time to fly from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU)?
Select a flight from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU) that takes off before 3 PM to reduce the risk 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, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU) last-minute?
Booking your plane ticket from ILG to SJU just before your getaway is usually more expensive. However, if you're flexible with your itinerary, you could bag a cheap last-minute fare.
Can I cancel or change the date of my flight from Wilmington, DE (ILG-New Castle) to Luis Munoz Marin Intl. Airport (SJU)?
Typically, you can reschedule or cancel your ILG to SJU flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you want more details, head to our Customer Service portal.

Travel information

Travel information

Origin airport
New Castle
Destination airport
Luis Munoz Marin Intl.
Airlines serving
American Airlines
Roundtrip price
$220
Distance
1575 mi

Book with confidence

Book with confidence

Wilmington to San Juan Flights

The cheapest times to fly from Wilmington to San Juan

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

 

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

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

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 Juan in 2025. You can also book with separate airlines for your outbound and return journeys, from $113 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 Juan 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 Juan 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 San Juan Flights

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*Available to One Key members.