$49 Cheap Southwest Airlines flights Oakland (OAK) to San Diego (SAN)

Scoring cheap one-way Southwest Airlines flights from OAK to SAN from $49 on Expedia couldn't be easier --- just filter by "Price (lowest to highest)." Or check out our budget-friendly return fares from $88 for your next getaway.**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.

Begin your search one to three months ahead of your travel date to score cheaper fares on Southwest Airlines flights from Oakland Intl. Airport (OAK) to San Diego Intl. Airport (SAN). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, and you can enjoy significant savings on domestic journeys.*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.

Leaving OAK at 6:10AM UTC-8, the first Southwest Airlines flight to SAN lands at 7:40AM UTC-8. Traveling early means you'll be less likely to encounter delays or cancellations.* Not an early riser? The last Southwest Airlines flight from OAK to SAN departs at 8:50PM UTC-8 and touches down at 10:20PM UTC-8.*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.