Cheap United Flights from Kansas City to San Diego (MCI→SAN)

Landing cheap one-way United Airlines flights from MCI to SAN on Expedia couldn't be simpler — just filter by "Price (lowest to highest)." Or check out our affordable round-trip fares for your next adventure.*

*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 more affordable in the off-peak months of January and November. Whether you need a one-way or round-trip ticket, you could find a better deal then.

To figure out if there's a direct trip from MCI to SAN with United Airlines or other airlines, check the "Nonstop" box when searching for tickets.

San Diego Intl. Airport (SAN) is the primary San Diego hub for United Airlines flights from Kansas City Intl. Airport (MCI).

Changes are generally free within 24 hours of making a booking, but your airline may charge you after that time. For further information about altering your flights, check out your "Trips," select your flight and click on "Manage Booking." If you want the freedom to make changes without additional charges, tick the "Changes included" or "No cancel fee" filter when planning your next trip.