Cheap Southwest Airlines flights San Diego (SAN) to Wilmington (ILM)

Make use of the “Price (lowest to highest)” filter on Expedia to search for cheap Southwest Airlines return flights from SAN to ILM. Affordable one-way fares are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Look for one-way or return flights to Wilmington in January or December. You could find a cheap fare with Southwest Airlines during these off-season months.

Look for cheap Southwest Airlines flights from San Diego Intl. Airport (SAN) to Wilmington Intl. Airport (ILM) one to three months before your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the best day of the week to book a domestic flight is usually Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Use our “Nonstop” filter when searching for direct Southwest Airlines flights from SAN to ILM. You can also compare other airlines servicing the same direct route.

To find the earliest departure from SAN to ILM with Southwest Airlines, sort your results by “Morning” and “Early Morning.” Choosing an early flight generally means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Wilmington Intl. Airport (ILM) is the primary Wilmington hub for Southwest Airlines flights from San Diego Intl. Airport (SAN).

Changes are typically free within 24 hours of booking, but your airline may add a charge after that time. For further details about modifying your flights, go to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to adjust your plans without additional costs, check the “Changes included” and “No cancel fee” filters when organizing your next break.