Home / Routes / KBFI → KCPS5 scheduled

The route from Boeing Field King County International Airport (KBFI) in Seattle to St Louis Downtown Airport (KCPS) in Cahokia/St Louis. SkyMeter tracks roughly 5 scheduled flights on this route across 2 carriers. The most active operator is LAA (LAA). Average block time is 3h 29m. Departures average 22 minutes off schedule, with 40% running more than 15 minutes late. The most common aircraft on this route is the LEARJET Bombardier Learjet 35/36.

Scheduled
5
last 284 days
ADS-B observed
2
Airlines
2
Avg dep delay
22m
Late >15 min
40.0%
Cancel rate
0.00%

Recent observed flights

From ADS-B trace data

2026-09-23 01:07  →  2026-09-23 04:48  ·  3h 40m
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2026-07-31 22:16  →  2026-08-01 01:35  ·  3h 18m
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2026-04-23 00:50  →  2026-04-23 04:17  ·  3h 27m
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2025-11-28 19:01  →  2025-11-28 22:03  ·  3h 1m
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2025-11-07 17:45  →  2025-11-07 21:00  ·  3h 14m
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2025-10-20 01:07  →  2025-10-20 04:09  ·  3h 1m
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2025-09-21 16:26  →  2025-09-21 19:39  ·  3h 12m
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2025-08-22 15:53  →  2025-08-22 21:45  ·  5h 51m
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2025-08-16 15:11  →  2025-08-16 18:20  ·  3h 9m
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2025-06-10 14:59  →  2025-06-10 18:18  ·  3h 18m
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View KCPS → KBFI