Cheap Flights From San Francisco Intl. (SFO) To Logan Intl. (BOS)

If you're planning to travel from San Francisco to Boston, there are a good number of airlines that will fly you there. Take your pick from these airlines that fly direct from SFO to BOS:

• JetBlue - (B6) with 130 flights every month
• United Airlines - (UA) with 86 flights every month
• Delta - (DL) with 30 flights every month
• Alaska Airlines - (AS) with 26 flights every month

Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.