Roundtrip Denver to San Francisco Nonstop Airfares on Southwest Airlines

This Expedia deal offers roundtrip nonstop airfares between Denver (DEN) and San Francisco (SFO) on Southwest Airlines.

Travel is available for departures from DEN on Jan 6-9, 12-17, 20-24, 26-31; Feb 2, 10-14. Departures from SFO are available on Jan 7-8, 10, 12-14, 21, 24, 26-27, 29, 31; Feb 2-4, 6-7.

These are basic economy fares, which include a personal item and a carry-on bag, but do not allow for seat selection or free checked bags on Southwest. This deal expires on February 28, 2026.