9K 5731 Boston to Nantucket Flight Status

Cape Air Flight 9K5731 from Boston Logan International Airport BOS to Nantucket Memorial Airport ACK is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on October 10th, 2025.
Check the table below for 9K5731's most recent flight history:

9K 5731 Flight Status & Schedule

Date Departure Arrival Status
Oct 10 19:08 19:39
Landed
Track >
Oct 03 18:47 19:19
Landed
Track >
Sep 26 19:45 19:45
En-Route
Track >
Sep 19 19:37 20:05
Landed Late
Track >
Sep 12 19:52 20:28
Landed Late
Track >

Cape Air 9K 5731 Boston to Nantucket Flight Information

Cape Air Flight 9K5731 connects Boston, United States to Nantucket, United States, taking off from Boston Logan International Airport BOS and landing at Nantucket Memorial Airport ACK.

How long is the 9K5731 flight from Boston to Nantucket?

The average flight time from Boston to Nantucket is 33 minutes. The flight distance is 146 km / 91 miles and the average flight speed is 235 km/h / 146 mph.

What is the On-Time Performance (OTP) of Cape Air Flight 9K5731 Boston to Nantucket?

The Airportia On-Time Performance Rating for Cape Air Flight 9K5731 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight 9K5731 arriving at?

Flight 9K5731 arrives at Nantucket Memorial Airport (ACK) Terminal C.

When was the latest 9K5731 flight?

The latest flight took off on Friday, October 10th, 2025 with the flight status being Landed on 19:39.

How else can the flight 9K5731 be referenced as?

This Cape Air flight can also be referenced as KAP5731, 9K 5731, KAP 5731.

How often is flight 9K5731 delayed?

On average, 30% of all 9K5731 flights are delayed. The average delay is 22 minutes.

Can I get compensation for my delayed or cancelled 9K5731 flight or baggage issues?

If your 9K5731 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.

See our 9K5731 Flight Tracker above for more details.

9K5731 and Boston BOS to Nantucket ACK Flights

Other flights departing from Boston BOS: 9K5671, WS1623, WS1773, 9K1845

Other flights arriving at Nantucket ACK: TJ293, TJ291, 9K5691, TJ293

All flights connecting Boston BOS to Nantucket ACK.

9K5731 Cape Air Flight: Boston to Nantucket Route Map

9K5731 Cape Air Flight Map: Boston to Nantucket
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.