Home / Routes / KBOS → KSFO4,884 scheduled

The route from General Edward Lawrence Logan International Airport (KBOS) in Boston to San Francisco International Airport (KSFO) in San Francisco. SkyMeter tracks roughly 4,884 scheduled flights on this route across 20 carriers. The most active operator is UAL (UAL). Average block time is 6h 32m. Departures average 38 minutes off schedule, with 66% running more than 15 minutes late. The most common aircraft on this route is the BOEING Boeing 737 MAX 9.

Scheduled
4,884
last 445 days
ADS-B observed
1,211
Airlines
20
Avg dep delay
38m
Late >15 min
65.5%
Cancel rate
1.17%

Recent observed flights

From ADS-B trace data

2026-07-19 15:51  →  2026-07-19 21:46  ·  5h 54m
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2026-07-19 15:04  →  2026-07-19 21:06  ·  6h 2m
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2026-07-19 14:40  →  2026-07-19 20:39  ·  5h 59m
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2026-07-19 13:20  →  2026-07-19 19:08  ·  5h 48m
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2026-07-19 12:21  →  2026-07-19 18:28  ·  6h 7m
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2026-07-19 11:33  →  2026-07-19 17:26  ·  5h 52m
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2026-07-19 10:40  →  2026-07-19 16:49  ·  6h 8m
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2026-07-19 10:13  →  2026-07-19 16:04  ·  5h 51m
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2026-07-19 01:37  →  2026-07-19 08:15  ·  6h 38m
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2026-07-19 00:59  →  2026-07-19 07:28  ·  6h 28m
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Codeshare partnerships

Marketing carriers selling tickets on this route under their own flight numbers

sells UAL 1752
sells UAL 1752
sells JBU 1465
sells JBU 687
sells JBU 661
sells JBU 661
sells JBU 361
sells JBU 360
sells DAL 358
sells UAL 341
sells ASA 340
sells ASA 340
sells ASA 340
sells ASA 340
sells UAL 317
sells DAL 278
sells ASA 255
sells ASA 250
sells DAL 224
sells DAL 197

Looking for the return flight?

View KSFO → KBOS