How often are SFO to BOS flights on time?

Flights from San Francisco (SFO) to Boston (BOS) arrive on time 88% of the time across 24,109 flights of official data.

Which airline is most reliable on the SFO to BOS route?

Alaska Airlines has the best on-time record on this route at 90% across 2,236 flights.

Route reliability

Flights from San Francisco to Boston arrive on time 88% of the time across 24,109 flights. Here’s how each airline really performs.

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On-time rate

24,109 flights

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg BOS → SFO.

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Nonstop vs. Connecting Flights: The Reliability Trade-off

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Do Morning Flights Really Have Fewer Delays?

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Are Some Airlines Really More Reliable Than Others?

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Score real SFO–BOS flights on reliability, weather, and connection safety — not just price.

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