San Francisco to Puerto Vallarta $228 "All In"

HOT FARE! (as of 8pm Wednesday)
U.S Airways has flights between San Francisco and Puerto Vallarta for $124 roundtrip + fees, for a total cost of $228. The fare is valid now (no advance ticketing required) through February 26, 2009. Fare basis is RX0XF. Some flights are operated by United.

Plenty of availability. For example, January 9-14 is available at this price, with a connection in Phoenix.

Be sure to click on "flexible dates" option when searching for flight availability.

San Francisco to Puerto Vallarta $312rt/ tax included

United Airlines is offering discount tickets for flights between San Francisco to Puerto Vallarta, Mexico. The roundtrip price of $312 included all taxes, fees and fuel surcharges and is available at www.united.com, using the flexible dates tab.

For example, I found non-stop United flights (operated by TED) for a long weekend getaway between Wednesday July 30th, returning Sunday August 3rd. The fare books into the "L" fare class and must be booked by July 11th, with travel completed by August 31st.