Which airline is most reliable for BOS (Boston) to SFO (San Francisco)?

We don't have enough airline-level data for the BOS to SFO route yet.

How often are flights delayed from BOS to SFO?

About 23% of flights from BOS to SFO experience delays. 77% arrive on time.

What's the average delay on BOS to SFO flights?

When flights from BOS to SFO are delayed, the average delay is approximately 46 minutes.

BOS → SFO

BOS (Boston) to SFO (San Francisco)

BOS (Boston) to SFO (San Francisco) flights arrive on time 77% of the time. The average delay is 46 minutes. Delays on this route are most often caused by air traffic and busy airspace.

Source: Bureau of Transportation Statistics. Updated March 2026.

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BOS → SFO on-time performance by month

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This route is on time most of the time. About 77% of flights arrive on schedule.

Delays on this route are most often caused by air traffic and busy airspace.

BOS Airport SFO Airport

Check the return: SFO → BOS

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Data last updated March 2026. Source: Bureau of Transportation Statistics.