Home / Routes / KBFI → KSUS10 scheduled

The route from Boeing Field King County International Airport (KBFI) in Seattle to Spirit of St Louis Airport (KSUS) in St Louis. SkyMeter tracks roughly 10 scheduled flights on this route across 8 carriers. The most active operator is USC (USC). Average block time is 3h 4m. Departures average 18 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
10
last 414 days
ADS-B observed
11
Airlines
8
Avg dep delay
18m
Late >15 min
40.0%
Cancel rate
0.00%

Recent observed flights

From ADS-B trace data

2026-08-23 15:48  →  2026-08-23 19:09  ·  3h 21m
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2026-08-06 22:30  →  2026-08-07 01:44  ·  3h 13m
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2026-07-28 17:59  →  2026-07-28 21:16  ·  3h 16m
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2026-07-26 16:06  →  2026-07-26 20:10  ·  4h 4m
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2026-07-20 20:36  →  2026-07-20 23:48  ·  3h 12m
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2026-07-19 18:01  →  2026-07-19 21:19  ·  3h 17m
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2026-07-10 15:13  →  2026-07-10 20:37  ·  5h 23m
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2026-07-07 00:00  →  2026-07-07 03:24  ·  3h 24m
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2026-06-26 19:11  →  2026-06-27 01:23  ·  6h 12m
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2026-06-22 20:09  →  2026-06-22 23:29  ·  3h 19m
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View KSUS → KBFI