$537 Cheap Flights from Wilmington (ILG) to San José (SJO)

View $537 flight on Mon, Dec 22, 2025Opens in a new window

Popular airlines from Wilmington, DE (ILG-New Castle) to Juan Santamaria Intl. Airport (SJO)

Cheap Flights from Wilmington to San José (ILG-SJO)

Prices were available within the past 7 days and start at $537 for one-way flights and $316 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Dec 29 - Fri, Jan 9
ILG
Wilmington
SJO
San José
$316 Roundtrip, found 5 days ago
$316
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Dec 29 from Wilmington to San José, returning Fri, Jan 9, priced at $316 found 5 days ago
American Airlines
Mon, Dec 29 - Mon, Jan 12
ILG
Wilmington
SJO
San José
$421 Roundtrip, found 5 days ago
$421
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Dec 29 from Wilmington to San José, returning Mon, Jan 12, priced at $421 found 5 days ago
American Airlines
Mon, Oct 27 - Wed, Oct 29
ILG
Wilmington
SJO
San José
$438 Roundtrip, found 3 days ago
$438
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Oct 27 from Wilmington to San José, returning Wed, Oct 29, priced at $438 found 3 days ago
American Airlines
Wed, Oct 29 - Tue, Nov 4
ILG
Wilmington
SJO
San José
$454 Roundtrip, found 5 days ago
$454
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Oct 29 from Wilmington to San José, returning Tue, Nov 4, priced at $454 found 5 days ago
American Airlines
Mon, Oct 27 - Sun, Nov 2
ILG
Wilmington
SJO
San José
$457 Roundtrip, found 3 days ago
$457
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Oct 27 from Wilmington to San José, returning Sun, Nov 2, priced at $457 found 3 days ago
American Airlines
Sat, Oct 25 - Sat, Nov 1
ILG
Wilmington
SJO
San José
$462 Roundtrip, found 3 days ago
$462
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Oct 25 from Wilmington to San José, returning Sat, Nov 1, priced at $462 found 3 days ago
American Airlines
Wed, Oct 29 - Tue, Nov 4
ILG
Wilmington
SJO
San José
$467 Roundtrip, found 5 days ago
$467
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Oct 29 from Wilmington to San José, returning Tue, Nov 4, priced at $467 found 5 days ago
American Airlines
Wed, Oct 29 - Tue, Nov 4
ILG
Wilmington
SJO
San José
$468 Roundtrip, found 5 days ago
$468
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Oct 29 from Wilmington to San José, returning Tue, Nov 4, priced at $468 found 5 days ago
American Airlines
Sat, Oct 25 - Sat, Nov 1
ILG
Wilmington
SJO
San José
$475 Roundtrip, found 3 days ago
$475
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Oct 25 from Wilmington to San José, returning Sat, Nov 1, priced at $475 found 3 days ago
American Airlines
Sat, Oct 25 - Sat, Nov 1
ILG
Wilmington
SJO
San José
$476 Roundtrip, found 3 days ago
$476
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Oct 25 from Wilmington to San José, returning Sat, Nov 1, priced at $476 found 3 days ago

Alternative airports near San José

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

Select flight to Juan Santamaria Intl. SJO. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $481
SJO
Juan Santamaria Intl.
Cheapest
Average driving time to city center20 min
Flights from $481

Frequently asked questions

How much does a flight from Wilmington, DE (ILG-New Castle) to Juan Santamaria Intl. Airport (SJO) cost?
Get a cheap one-way flight from $537 or cheap return flight from $316 from Wilmington, DE (ILG-New Castle) to Juan Santamaria Intl. Airport (SJO) 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 Juan Santamaria Intl. Airport (SJO)?
December is the cheapest month to fly from ILG to SJO. Planning your trip for the off-season is often the key to finding a great deal.
What is the cheapest airline that flies from Wilmington, DE (ILG-New Castle) to Juan Santamaria Intl. Airport (SJO)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll fly you from ILG to SJO. Then, sort your results by "Price (lowest to highest)" to snap up the best deal available.
How many flights per day from Wilmington, DE (ILG-New Castle) to Juan Santamaria Intl. Airport (SJO)?
You'll have to book a flight with a layover if you're traveling from Wilmington, DE (ILG-New Castle) to Juan Santamaria Intl. Airport (SJO). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from ILG to SJO?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be 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, DE (ILG-New Castle) to Juan Santamaria Intl. Airport (SJO)?
Book a flight from Wilmington, DE (ILG-New Castle) to Juan Santamaria Intl. Airport (SJO) that takes off before 3 PM to reduce the risk of delays and cancellations. Later departures 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 Juan Santamaria Intl. Airport (SJO) last-minute?
Booking your flight from ILG to SJO just before your journey is generally more expensive. But if you're flexible with your departure times and dates, you could land a cheap last-minute fare.
Is it cheaper to book an ILG to SJO flight and hotel package?
Compared with arranging flights and hotels separately, booking an ILG to SJO flight and hotel package with Expedia could result in significant savings. What's more, having everything in one convenient place takes the hassle out of travel planning. Just pick your flights and select from our wide range of stays, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Wilmington, DE (ILG-New Castle) to Juan Santamaria Intl. Airport (SJO)?
Typically, it's possible to cancel or reschedule your ILG to SJO flight. However, if the booking was made more than 24 hours ago, additional fees 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.

Travel information

Origin airport
New Castle
Destination airport
Juan Santamaría Intl.
Roundtrip price
$316
Distance
2117 mi

Book with confidence

Wilmington to San José Flights

The cheapest times to fly from Wilmington to San José

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

 

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

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

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 José in 2025. You can also book with separate airlines for your outbound and return journeys, from $537 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 José 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 José 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 José Flights

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*Available to One Key members.