$174 Cheap Delta flights Baltimore (BWI) to San Diego (SAN)

Grab affordable round-trip Delta Air Lines flights from $347 from BWI to SAN by filtering your results from “Price (lowest to highest)” on Expedia. Or search for bargains from $174 for a one-way journey.**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.

Delta Air Lines flights to San Diego are usually cheaper in the off-peak months of January and November. Whether you’re searching for a one-way or round-trip ticket, you could land a better deal then.

For cheap Delta Air Lines fares from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) 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 impact the overall price. Sunday is usually the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey 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.

Click on our “Nonstop” filter when searching for direct Delta Air Lines flights from BWI to SAN. You’ll also be able to compare other airlines offering the same direct route.

Browse Delta Air Lines’s earliest flights from BWI to SAN by checking the “Morning” and “Early Morning” filters. Not only will you arrive sooner, early departures also have a 20% less chance of being canceled.**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.

San Diego Intl. Airport (SAN) is the main San Diego gateway for Delta Air Lines flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI).

Delta Air Lines makes traveling from BWI to SAN enjoyable with a rewarding loyalty program and an excellent in-flight experience. You could even start earning points with Delta SkyMiles. Make sure you sign up to our 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 usually free within 24 hours of making your booking, but your airline may charge you after that time. For more details about altering your flights, go to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to make changes without additional costs, apply the “No cancel fee” or “Changes included” filter when organizing your next getaway.