$167 Cheap Flights from Wilmington (ILM) to San José (SJO)

View $167 flight on Tue, Dec 9, 2025Opens in a new window

Popular airlines from Wilmington Intl. Airport (ILM) to Juan Santamaria Intl. Airport (SJO)

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

Prices were available within the past 7 days and start at $167 for one-way flights and $308 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Dec 9 - Tue, Dec 16
ILM
Wilmington
SJO
San José
$308 Roundtrip, found 4 days ago
$308
Roundtrip
found 4 days ago
Select United flight, departing Tue, Dec 9 from Wilmington to San José, returning Tue, Dec 16, priced at $308 found 4 days ago
United
Sat, Dec 6 - Tue, Dec 16
ILM
Wilmington
SJO
San José
$352 Roundtrip, found 5 days ago
$352
Roundtrip
found 5 days ago
Select United flight, departing Sat, Dec 6 from Wilmington to San José, returning Tue, Dec 16, priced at $352 found 5 days ago
United
Sat, Dec 6 - Tue, Dec 16
ILM
Wilmington
SJO
San José
$358 Roundtrip, found 5 days ago
$358
Roundtrip
found 5 days ago
Select United flight, departing Sat, Dec 6 from Wilmington to San José, returning Tue, Dec 16, priced at $358 found 5 days ago
United
Tue, Dec 9 - Tue, Dec 16
ILM
Wilmington
SJO
San José
$359 Roundtrip, found 4 days ago
$359
Roundtrip
found 4 days ago
Select United flight, departing Tue, Dec 9 from Wilmington to San José, returning Tue, Dec 16, priced at $359 found 4 days ago
United
Sun, Feb 22 - Thu, Mar 5
ILM
Wilmington
SJO
San José
$367 Roundtrip, found 3 days ago
$367
Roundtrip
found 3 days ago
Select United flight, departing Sun, Feb 22 from Wilmington to San José, returning Thu, Mar 5, priced at $367 found 3 days ago
United
Sun, Dec 7 - Sun, Dec 14
ILM
Wilmington
SJO
San José
$383 Roundtrip, found 4 days ago
$383
Roundtrip
found 4 days ago
Select United flight, departing Sun, Dec 7 from Wilmington to San José, returning Sun, Dec 14, priced at $383 found 4 days ago
United
Thu, Feb 26 - Wed, Mar 11
ILM
Wilmington
SJO
San José
$399 Roundtrip, found 4 days ago
$399
Roundtrip
found 4 days ago
Select United flight, departing Thu, Feb 26 from Wilmington to San José, returning Wed, Mar 11, priced at $399 found 4 days ago
JetBlue Airways
Fri, Oct 2 - Sat, Oct 10
ILM
Wilmington
SJO
San José
$423 Roundtrip, found 20 hours ago
$423
Roundtrip
found 20 hours ago
Select JetBlue Airways flight, departing Fri, Oct 2 from Wilmington to San José, returning Sat, Oct 10, priced at $423 found 20 hours ago
American Airlines
Tue, Dec 9 - Tue, Dec 16
ILM
Wilmington
SJO
San José
$444 Roundtrip, found 4 days ago
$444
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Dec 9 from Wilmington to San José, returning Tue, Dec 16, priced at $444 found 4 days ago
Delta
Tue, Dec 9 - Tue, Dec 16
ILM
Wilmington
SJO
San José
$450 Roundtrip, found 4 days ago
$450
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Dec 9 from Wilmington to San José, returning Tue, Dec 16, priced at $450 found 4 days ago

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Find the cheapest month to fly from Wilmington (ILM) to San José (SJO)

October is typically the cheapest month to fly

From $261 - $612 per traveler.

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 $508
SJO
Juan Santamaria Intl.
Cheapest
Average driving time to city center20 min
Flights from $508
Flights from Wilmington (ILM) to San José (SJO)
Origin airport
Wilmington Intl.
Destination airport
Juan Santamaría Intl.
Airlines serving
American Airlines, Delta, JetBlue Airways, United
Roundtrip price
$307
Distance
1723 mi

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 $167 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.

 

Frequently asked questions

How much does a flight from Wilmington Intl. Airport (ILM) to Juan Santamaria Intl. Airport (SJO) cost?
Lock in a cheap one-way flight from $167 or cheap return flight from $308 from Wilmington Intl. Airport (ILM) to Juan Santamaria Intl. Airport (SJO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Wilmington Intl. Airport (ILM) to Juan Santamaria Intl. Airport (SJO)?
The cheapest month to fly from ILM to SJO is December, when demand is low. Off-peak months are often when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Wilmington Intl. Airport (ILM) to Juan Santamaria Intl. Airport (SJO)?
To find the cheapest airline that'll fly you from ILM to SJO, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Wilmington Intl. Airport (ILM) to Juan Santamaria Intl. Airport (SJO)?
You'll need to catch a flight with a layover if you're traveling from Wilmington Intl. Airport (ILM) 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 find the best option for your trip.
What day of the week has the most flights from ILM to SJO?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the season, 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 Wilmington Intl. Airport (ILM) to Juan Santamaria Intl. Airport (SJO)?
To reach Juan Santamaria Intl. Airport (SJO) on schedule, book a flight that takes off from Wilmington Intl. Airport (ILM) before 3 PM. The chance 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 Wilmington Intl. Airport (ILM) to Juan Santamaria Intl. Airport (SJO) last-minute?
Last-minute fares from ILM to SJO are typically more expensive. To secure the lowest prices, start searching for flights as soon as possible. That being said, if your travel plans are flexible, it's possible to find a cheap fare right before your journey.
Is it cheaper to book an ILM to SJO flight and hotel package?
Opting for an ILM to SJO flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our extensive range of stays and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Wilmington Intl. Airport (ILM) to Juan Santamaria Intl. Airport (SJO)?
If you reserved your ILM to SJO flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

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*Available to One Key members.