Roundtrip Spokane WA to San Diego Airfares on Southwest Airlines

No special codes or coupons are required. Get these RT Spokane WA to San Diego Airfares while supplies last.

This deal is available through February 28, 2026. Round trip airfares between Spokane, WA (GEG) and San Diego (SAN) on Southwest Airlines are basic economy fares, which include a personal item and a carry-on bag but do not allow seat selection or free checked bags. Flights involve one stop.

Travel Availability

• Departing Spokane (GEG): December 6, 9-10, 13, 17; January 6, 10, 13-14, 17, 21, 24, 27-28, 31; February 3-4, 7, 10-11, 17, 21
• Departing San Diego (SAN): December 6, 16; January 6-7, 10, 13-14, 17, 20-21, 24, 27-28, 31; February 3-4, 18