$134 Cheap United flights Pittsburgh (PIT) to San Diego (SAN)

Set the “Price (lowest to highest)” filter on Expedia to search for cheap United Airlines return flights from $246 from PIT to SAN. Affordable one-way options from $134 are also on offer.**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.

Search for return or one-way flights to San Diego in January or November. You could find cheaper fares with United Airlines during these off-peak times.

For cheap United Airlines fares from Pittsburgh Intl. Airport (PIT) 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 the overall cost. Sunday is generally the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight 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.

Enter your dates, click search and select the “Nonstop” filter on Expedia to find any direct flights from PIT to SAN with United Airlines or another airline.

Browse United Airlines’s earliest flights from PIT to SAN by checking the “Morning” and “Early Morning” filters. Not only will you arrive at your destination sooner, early departures are also 20% less likely to be 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.

Jump on a United Airlines flight from Pittsburgh Intl. Airport (PIT) to San Diego, and you’ll probably land at San Diego Intl. Airport (SAN). This is the airline’s main hub in this city.

Depart from PIT to SAN with United Airlines and you can look forward to a host of benefits starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you could also earn OneKeyCash™* to use on select future travel purchases.*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 add a charge after that time. For further information about modifying your reservation, head 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 “No cancel fee” or “Changes included” filter when organizing your next getaway.