Amazing JetBlue Airways BOS to SFO Flight Deals The cheapest flights to San Francisco Intl. Which airline has the least delays from San Francisco to Boston? Coronavirus Travel Alerts: CDC Advisories & Face-covering Requirements, Change/Cancel & Refund Policies, Airport Alerts Southwest.com; Routes; San Francisco (SFO) to Boston (BOS) Flights from San Francisco (SFO) to Boston (BOS) Book cheap flights from San Francisco (SFO) to Boston Logan with Southwest Airlines ®.It’s easy to find the San Francisco International Airport to Logan International Airport flight to make your booking and travel a breeze. In fact, this timely airline has an 80% on-time average. found within the past 7 days were $291 round trip and $149 one way. Amazing JetBlue Airways SFO to BOS Flight Deals The cheapest flights to Logan Intl. JetBlue Airways Flight B6134 connects San Francisco, United States to Boston, United States, taking off from San Francisco International Airport SFO and landing at Boston Logan International Airport BOS. If you are willing to have a connecting flight, consider booking with Southwest Airlines, as they allow travelers to check up to two bags for free. found within the past 7 days were $297 round trip and $204 one way. For those that would like a direct flight from San Francisco to Boston, consider booking your ticket with either JetBlue or Delta, as these companies are known for providing above-average legroom. Get the latest deals on flights to your favorite cities with our best web fares - and sign up for fare alerts. Additional terms may apply. Prices and availability subject to change. Booking with JetBlue Airways means you will arrive to Boston approximately the time you were supposed to. Prices … The flight distance is 4341 km / 2697 miles and the average flight speed is 769 km/h / 478 mph.