| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 20 | STT | SJU | 11:22 | 11:49 |
Landed
|
Track > |
| Jul 17 | STT | SJU | 11:28 | 11:54 |
Landed
|
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| Jul 16 | STT | SJU | 11:50 | 12:16 |
Landed
|
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| Jul 15 | STT | SJU | 11:49 | 12:15 |
Landed
|
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| Jul 04 | STT | SJU | 13:09 | 13:45 |
Landed
|
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| Jun 19 | STT | SJU | 09:18 | 09:50 |
Landed
|
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| Jun 16 | STT | SJU | 10:40 | 11:10 |
Delayed
|
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| Jun 12 | STT | SJU | 09:32 | 09:59 |
Landed
|
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| Jun 11 | STT | SJU | 12:16 | 12:47 |
Landed Late
|
Track > |
| Jun 10 | STT | SJU | 14:35 | 13:05 |
Unknown
|
Track > |
Cape Air Flight 9K8121 connects St. Thomas, U.S. Virgin Islands to San Juan, Puerto Rico, taking off from St. Thomas Cyril E. King Airport STT and landing at San Juan Luis Munoz Marin International Airport SJU.
How long is the 9K8121 flight from St. Thomas to San Juan?
The average flight time from St. Thomas to San Juan is 29 minutes. The flight distance is 109 km / 68 miles and the average flight speed is 224 km/h / 139 mph.
How many 9K8121 flights are operated per week?
4 flights per week. The flight 9K8121 is operated on Monday, Wednesday, Thursday and Friday.
What is the On-Time Performance (OTP) of Cape Air Flight 9K8121 St. Thomas to San Juan?
The Airportia On-Time Performance Rating for Cape Air Flight 9K8121 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight 9K8121 arriving at?
Flight 9K8121 arrives at San Juan Luis Munoz Marin International Airport (SJU) Terminal D.
When was the latest 9K8121 flight?
The latest flight took off on Monday, July 20th, 2026 with the flight status being Landed on 11:49.
How else can the flight 9K8121 be referenced as?
This Cape Air flight can also be referenced as KAP8121, 9K 8121, KAP 8121.
How often is flight 9K8121 delayed?
On average, 60% of all 9K8121 flights are delayed. The average delay is 17 minutes.
See our 9K8121 Flight Tracker above for more details.
Flight 9K8121 is code-shared by 1 airline using the flight number UA6427
Other flights departing from St. Thomas STT: 9K8081, 9K8621, AA2741, 9K8081
Other flights arriving at San Juan SJU: DL1757, XP327, TJ901, 9K5901
All flights connecting St. Thomas STT to San Juan SJU.
