Cheap United Flights from San Juan to San Diego (SJU→SAN)

Landing cheap one-way United Airlines flights from SJU to SAN from AU$643 on Expedia is a cinch — just filter by "Price (lowest to highest)." Alternatively, check out our affordable round-trip fares AU$1,057 for your next exciting holiday.*

*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.

United Airlines flights to San Diego tend to be cheaper in the low-season months of January and November. Whether you need a one-way or a return ticket, you could find a better deal then.

To see if there's a direct trip from SJU to SAN with United Airlines or another carrier, check the "Nonstop" box when browsing for tickets.

United Airlines flights from Luis Munoz Marin Intl. Airport (SJU) to San Diego arrive at San Diego Intl. Airport (SAN). This is the main entry point to this city.

Depending on your ticket type, a fee is typically charged if you modify or cancel your flight more than 24 hours after it's been confirmed. To secure flexible plane tickets, select our "Changes included" and "No cancel fee" boxes when you search for flights. To learn more about cancelling or changing your reservation, head to "Trips," select your flight and tick "Manage Booking."