$149 Cheap Delta flights Wilmington (ILM) to San Diego (SAN)

Make use of the “Price (lowest to highest)” filter on Expedia to search for cheap Delta Air Lines return flights from $277 from ILM to SAN. Affordable one-way fares from $149 are also available.**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.

Browse for one-way or return flights to San Diego in January or November. You could find an affordable fare with Delta Air Lines during these quieter months.

For cheap Delta Air Lines fares from Wilmington Intl. Airport (ILM) to San Diego Intl. Airport (SAN), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect what you pay. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**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.

To see if there’s a direct journey from ILM to SAN with Delta Air Lines or any other airlines, check the “Nonstop” box when looking for flights.

To find the earliest departure from ILM to SAN with Delta Air Lines, sort your results by “Early Morning” and “Morning.” Choosing an early flight usually means cancellations are less likely.**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.

Delta Air Lines flights from Wilmington Intl. Airport (ILM) to San Diego come in to San Diego Intl. Airport (SAN). This is the main entry point to this destination.

Delta Air Lines makes flying from ILM to SAN enjoyable with an excellent in-flight experience and a rewarding loyalty program. You may even earn points with Delta SkyMiles. Don’t forget to join Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are typically free within 24 hours of booking, but your airline may charge you after that time. For further information about modifying your flights, go to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to adjust your plans without being charged, tick the “Changes included” and “No cancel fee” filters when planning your trip.