From 16th St. Mission BART to San Francisco airport, fly to Arcata/Eureka airport, then bus to Arcata. 3hrs 33min $301. From San Francisco, CA bus to Arcata, CA. 7hrs 20min $65. From Civic Center/UN Plaza BART to Richmond Transit Station Amtrak, train to Martinez, CA, then bus to Arcata, CA. 9hrs 55min. From San Francisco drive to Arcata. 5hrs 10min $35.