Bookable through
Google Flights or on
PricelineMultiple dates available September-February, but most flights are in Dec-Jan.
For some reason not all dates are pricing out properly as a round trip, so you may need to book 2 one way flights.
UNITED FLIGHTS ARE IN BASIC ECONOMY!!ORD-SAN Example Dates:August: 29
November: 6, 13, 14, 20, 23
December: 3, 4, 5, 6, 8, 10, 11, 12
January: 9, 14, 15, 16, 17, 18, 21, 22, 23, 24, 28, 29, 30, 31
February: 4, 5, 6, 7, 8, 9, 11, 12, 13
SAN-ORD Example Dates:September: 8, 11, 12, 14, 15, 18, 19, 20, 21, 22, 25, 26, 29
October: 3, 13, 20, 23, 26, 27, 29, 30, 31
November: 1, 2, 3, 6, 7, 8, 9, 10, 13, 14, 23, 29, 30
December: 1, 3, 4, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 24, 25
January: All month excluding the 1st, 2nd, and 3rd
February: 1, 2,4, 5, 6, 7, 8, 9, 11, 12, 13, 14